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Submitted Videos Contest 4 (Pages)

Welcome to ChloroFilms plant videos for CONTEST #4. Thank you for the entries! Do Plants Have Hormones? You Betcha! Mary Williams General Summary of video content: I'm writing a series of articles for Teaching Tools in Plant Biology, a new feature of the journal The Plant Cell. Our goal is to encourage students of all ages to get interested in studying plants. Just for fun I'm creating a series of short YouTube videos that use the images I've been creating for the teaching articles. I hope this video helps people see the connection between the hormones that convey information in our bodies and the hormones that have similar functions in plants. Additional Information: I particularly like this video because the growing boys at the beginning are my own children, cartoon version.   Landing Lights for Bumblebees Andrew Chapple General Summary of video content: Gardeners could help maintain bumblebee populations by growing plants with red flowers or flowers with stripes along the veins, according to field observations of the common snapdragon, Antirrhinum majus, at the John Innes Centre in the UK. Students spent successive summers observing the foraging patterns of bumblebees on snapdragon plants. The students compared the number of visits by bumblebees to various snapdragon cultivars and the number of flowers visited per plant. Red flowers and those with venation patterning were visited significantly more frequently than white or pink. Bumblebees are the main pollinators for snapdragon because the weight of the bee is needed to open the closed flower. Pollinators learn and memorize floral signals, such as flower shape, scent, colour and patterns of pigmentation. They return to flowers from which they have previously found food. Simple changes due to single gene changes can have dramatic effects on which pollinators visit and how often. Collaborators from New Zealand also analysed how the stripy patterns are formed along the veins of the common snapdragon. They showed that two signals interact to create the stripes. FAMILIA PINACEAE BRENDA YESENIA VELASCO MARTINEZ General Summary of video content: amily Pinaceae in Chiapas, Mexico Pinaceae, the Pinaceae, are a family of Order Pinales. It is the largest family in species diversity, between 220-250, distributed in 11 genera and second largest (after Cupressaceae). Are trees can grow between 2 to 60 m, usually evergreen (Except larix and Pseudolarix), resin canals, monoecious, of monopodial branching. Mexico is one of the richest countries in Pinaceae, have now reported about 60 species, with a considerable number of varieties. In Chiapas, two genera are represented in this family: pine and abies, both with very specific characteristics, in the state, about 13.8% of its territory is covered by forests of pine and pine-oak. To chiapas, Farjon and Styles in 1997 reported 11 species of pine with two varieties of these species. This genus is characterized by often whorled branching and more or less regular.The cup may be pyramidal or rounded, and mature trees, broad and depressed.   pinus Marissa Lobato Pinto Technical Summary of video content: A description about the generum Pinus, for the family Pinacea Realized by a team work: Atzin Yetlanezi Campos Beltrán Marissa Lobato Pinto Bany Alexander López Velasco Alejandra Jaqueline Pablo Solís Citlalli del Carmen Ventura Tamayo Additional Information: Team work: Atzin Yetlanezi Campos Beltrán Marissa Lobato Pinto Bany Alexander López Velasco Alejandra Jaqueline Pablo Solís Citlalli del Carmen Ventura Tamayo   The Role of Recognition in Host-Parasite Interaction Karen Deuschle Technical Summary of video content: The role recognition plays in host-parasite interaction - in a humorous, easy to understand format.   Acidovorax Avenae Subsp. Citrulli Infecting Watermelon Fruit Amanda Aranowski General Summary of video content: Slideshow of the effects of Acidovorax Avenae Subsp. Citrulli on Watermelon Fruit. Learning to Live With HLB Karen Deuschle General Summary of video content: Learning to live with Huanglongbing (citrus greening). Main concepts for plant pathology are discussed using citrus greening as an example. Mani Skaria of Texas A&M instructs.   Mummy Berry Karen Deuschle General Summary of video content: The University of Maine Cooperative Extension discusses diseases of wild blueberries and how the Extension works to educate the public and blueberry growers. Pulvinus and movement in Byblis Siegfried R.H. Hartmeyer Technical Summary of video content: 14 days time lapse of Byblis liniflora show clearly that the carnivorous genus Byblis moves its leaves by pulvinus (thickening at the leaf or flower stalk base, enabling movement). This has first been noticed and published in 2008 by Brian Barnes (USA). Interestingly enough this amazing feature has apparently not been recognized or mentioned by other authors who described the different species of the Rainbow Plant in the past. We could find no text mentioning this fact prior to Brians examinations. Brian Barnes (USA) is ICPS director of conservation and president of the Florida CPS. The intention of our time-lapse experiment was to proof that Byblis actually moves its leaves and flowerstalks by growing Pulvini, and the resulting film became a clear evidence for this phenomenon. Additional Information: Meanwhile we know that all different species of the carnivorous genus Byblis develop Pulvini and move their leaves and/or flowerstalks. But such a movement, what is it good for? Easy to observe with our time-lapse: a new trapping leaf and a flower stalk (wearing one flower bud on the tip) both emerge from the leaf axil and both grow up erect to catch flying prey until the flower bud opens. Now a pulvinus is developed in the common leaf axil and the sticky trapping leaf moves down, not to endanger approaching pollinators. The flower is still hold erect. After pollination took place, the pulvinus shows a new thickening and now the flower stalk with the ripening seed-pod on the tip moves down and soon after that movement is finished, the seed-pot facing down to the soil opens and seeds are released without sticking to the gluey plant. Due to the fact that the mainly annual plants (except Byblis aff. gigantea) are rapid growers, the time-lapse of some plants looks like a fascinating group of ballet dancers.   Damping-off Kurt Reinhart Technical Summary of video content: Damping-off is a movie short on the widespread but mostly unnoticed disease of plants. I say unnoticed because the plants appear to wilt away and most would conclude the cause was limitation of plant available moisture. The movie short exposes the secretive predation of plants, especially seedlings, by several types of pathogenic microbes commonly lurking in the soil. All content is of native plants and plant communities. Our heroine, black cherry, is one of the most valuable timber species in the USA and is the source of cherry wood used in fine woodworking. Many other plant species are affected by Pythium, however, the movie focuses on black cherry because it was the focus of Kurt’s research for several years. All time-lapse videos and still photographs are the copyright of Kurt Reinhart. Related content is also on Kurt’s educational website (http://www.iecology.net/). Warning: Plants were deliberately harmed in the filming of this movie. Music Confugium corvorum by Axis Mundi Actum found on Jamendo.com (part of the Creative Commons- http://creativecommons.org/licenses/by-sa/3.0/). Another good version of the movie can be viewed on Vimeo (http://vimeo.com/14715739). Damping-off will be entered in the (4th) Chlorofilms’ film contest (http://www.chlorofilms.org/). Dioon merolae (Unicach) Roberto Gárcia Sánchez General Summary of video content: Dioon merolae, se hace énfasis a la problemática que presenta, de igual manera se da una breve descripción de la especie así como la historia de esta Cycada y un poco de la importancia que presenta no solo para el estado de Chiapas si no para México, si no conservamos este tipo de planta se extinguirá permanentemente de la tierra y solo será un recuerdo más.   Cupressus 5° B Jose Rodolfo Ruiz Samayoa General Summary of video content: Este video es grabado en rancho nuevo, San Cristobal de las Casas, y muestra las principales caracteristicas morfologicas del genero Cupressus que pertenece a la familia de coniferas Cupressaceae. Género Zamia Heberto Cruz Arias Technical Summary of video content: se describe las principales caracteristicas del genero zamia de la famialia zamiaceae, su distribucion y especies existentes en méxico y en el estado de chiapas. Additional Information: este video se realizá con fines educativos por alumnos de la licenciatura en biologá a de la Universidad de Chiencias y Artes de Chiapas   Zamia Ana Karen Trinidad de Paz Technical Summary of video content: Video acerca del género Zamia de la familia Zamiaceae, con información de las características, usos, habitat. Ceratozamia Norma Liliana Sanchez Gordillo Technical Summary of video content: Este video fue realizado por los alumnos de la facultad de biologia de la universidad de ciencias y artes de Chiapas, con el fin de dar a conecer a las plantas conocidas como cicadas para concientizar a las personas de su cuidado y de su preservacion.   Ceratozamia Norma Liliana Sanchez Gordillo Technical Summary of video content: Los alumnos de la Facultad de biología de la universidad de ciencias y Artes de Chiapas , realizaron este video , con el fin de que las personas conozcan la variedad de cicadas que existen, y tomen consciencia de la importancia que estas tienen para la naturaleza ,para evitar su extinción. taxodium mucronatum julio cesar burguete gutiérrez General Summary of video content: this video explains the morphological characteristics and importance of Taxodium mucronatom in Mexico   Taxodium mucronatum Thamara Altamirano Archila General Summary of video content: Características generales de Taxodium mucronatum,en el estado de Chiapas, México, importancia y usos. Taxodium mucronatum Leidy Patricia López Pérez General Summary of video content:   Emergence Forest Z. Allread General Summary of video content: Emergence: This video is a conversation or maybe a contemplation between art and science. It serves as a device, a video to pull the viewer in and see the unseen. It presents the abstraction of a plant, and its internal architecture. The artwork speaks of histology, space, microbiology and scientific investigation. I mean to capture the emotion, spirit, magic, or essence known as nature's spell. Artwork and Animation: Forest Z. Allread Audio Insert: Between Hemispheres Artist: Nonloc Album: Between Hemispheres Additional Information: please notify me that you have received this submission successfully and that the criteria is correct. thank you, Forest Z. Allread Induce asexual mutation without any chemical ormutagene Trilok Sundar Mohanty Technical Summary of video content: Three videos sent for viewing Asexually (no chemical or Mutagen) induced Genetic change in Cowpea plant -and change in F1.. genetic change is noticed in next generation but in this method genetic change is noticed in same generation. Mutated Brinjal plant(Purple)- same plant bears fruits of different color and shape Green Brinjal plant mutated bears good no of fruits in second flush Additional Information: Speciality 1-Hybridization in brinjal is done asexually without any chemical or mutagene.   Induce asexual mutation without any chemical ormutagene Trilok Sundar Mohanty Technical Summary of video content: Three videos sent for viewing Asexually (no chemical or Mutagen) induced Genetic change in Cowpea plant -and change in F1.. genetic change is noticed in next generation but in this method genetic change is noticed in same generation. Mutated Brinjal plant(Purple)- same plant bears fruits of different color and shape Green Brinjal plant mutated bears good no of fruits in second flush Additional Information: Speciality 2-Morphological change is induced through this method where cowpea plant produce quadri/pentafoliate character in same generation and also in F1 generation. Advantages 1-Involves less money,infrastructure 2-Since change is noticed in same generation time required is less for hybridization. Induce asexual mutation without any chemical ormutagene Trilok Sundar Mohanty Technical Summary of video content: Three videos sent for viewing Asexually (no chemical or Mutagen) induced Genetic change in Cowpea plant -and change in F1.. genetic change is noticed in next generation but in this method genetic change is noticed in same generation. Mutated Brinjal plant(Purple)- same plant bears fruits of different color and shape Green Brinjal plant mutated bears good no of fruits in second flush Additional Information: 3-The method can be adopted to develop crops of local importance.   All Things Algae Terry Woodford-Thomas Technica Summary of video content: The video discusses the diversity among algae in the world and their importance to life on Earth. The origin of hydrocarbon-based fossil fuel is presented, highlighting ancient algae as an important component of keragen and the making of petroleum fossil fuels through geochemical processes through the ages. This is a prelude to the current explosion of interest in generating biofuel from living algae. The growth requirements for algae, their natural abilities to make lipids in some cases and how scientists can further increase lipid biosynthesis in green algae are discussed to illustrate the types of scientific research that is ongoing in laboratories today. Viewers are invited to learn more about Backyard Biofuels, a citizen science project launched in 2010 and directed by the Saint Louis Science Center and the Danforth Plant Science Center in St. Louis, Missouri. A call is made to all algae hunters encouraging them to donate algae samples from their own backyards and communities for the project. Viewers are challenged support real time science by collecting microalgae that could be new candidates for future algae biofuel production. Additional Information: The film’s narrator is Noah Engel, a 14-year old bright and articulate student who loves science. Noah comes to the Danforth Plant Science Center often to shadow scientists, and observe and ask questions. Noah’s voice is used in the video to engage in particular one target audience for “All Things Algae”: middle school science students. The video is designed to be shown in 6th-12 grade science classrooms, at the Danforth Center for educational programs, in the Saint Louis Science Center galleries and learning laboratories and at the annual Missouri State Fair, the St. Louis LouFest and other public gatherings. For classroom use, the 10-minute video can be shown in its entirety or it can be shown in two parts. There is a natural split built into the video about midway at “Microalgae Biofuel: Lab Research”. The video contains real footage from laboratories, greenhouses and growth rooms at the Danforth Center as well as images generated in the Integrated Microscopy Center there. Terry Thomas, who directs the Center’s Science Education and Outreach programs, is learning the skills and art of video making by taking evening adult education classes at Washington University and Webster University in St. Louis. Induce asexual mutation without any chemical or mutagene Trilok Sundar Mohanty Technical Summary of video content: The genetic change is stable as noticed in F2 The mutated cowpea plant produce Quadrifoliate/pentafoliate leaf in same generation as you see in previous video. F1 generation with Quadrifoliate/pentafoliate leaf is also noticed. This character has been transferred toF2 generation as you see in the present video taken on 01.12.10. The mutation created morphological change in plant with stable genetic change as you see it. Plant hybridization or breeding is not new. This type of inducing asexual (without chemical) mutation is new to the plant science. In this method morphological changes occur. The method may open new line of research in future. Additional Information: Previously I had send three Videos which were seen in paticipating list. Since the Video was taken on 01.12.2010 could not be sent. However if possible this may be included as it confirms the stability of genetic change.This is F2 generation.As this mutation is stable it can be tried in many crops.This will lead to a new branch of genetic science   Amazing Plants Kristine Hill and Zoë Randell General Summary of video content: A fun film by Kris Hill and Zoë Randell, highlighting why plants are so important. This film is designed to encourage non-scientists to think about plants and appreciate how essential plants are. Host Plant Recognition Rupesh Ram Kariyat General Summary of video content: As we all know, host plant recognition is one of the most important concepts in Plant –insect interactions. Most of the insect herbivores have some level of specificity and they have different methods to recognize their hosts. This video is made to help us understand about host plant recognition by herbivore insects and the methods employed by them Insects are everywhere and a major food source for insects are plants. Although plants are everywhere we really don’t see the same insects on all the plants. Although there are generalist insects that can feed on a variety of plants, many of the herbivores are host-host family specific, like the one we are discussing in the video today As a herbivorous insect, they are always baffled by this question, what should I eat, and how can I choose between my host plant and thousands of other plants in this big green world? Unlike insects most vertebrates have a highly evolved food recognition system where they use vision, touch, smell and taste to locate and access their food source, but for insects most of these senses are very limited, especially vision and touch. So they have to rely upon smell and taste to locate their host. Let us see if they can do this. In this video we will use the herbivore Manduca sexta caterpillar, whose host plants are plants in the family solanaceae, which include tobacco, tomato, egg plant, peppers, horsenettle etc to find out if a Manduca caterpillar will be able to distinguish between a host plant and a non host plant and then specifically choose to feed on the host plant? We will do a simple choice assay to see this. To do this experiment, we will use this design. We will have a petriplate with a filter paper placed inside it. We will cut out 2 leaf disks, one from a host plant and one from a non host plant. Then we will place a second instar Manduca on either above the disks or below the disks towards the perimeter of the plate and then will record their movement As the host plant, we will use tobacco, which is an important plant species in the family solanaceae. As our non host we will use squah plant in the family cucurbitaceae which is also a very important plant species.In the embedded real time video where the caterpillar is placed above the disks and you can clearly see that it only takes the caterpillars less than a minute to locate the host and start feeding. If you look closely you can see that the caterpillar is moving its head to both sides sensing the smell and then deciding to go to its actual host. So, basically due to the specialized recognition methods and specificity, specialist insects are able to compete with other insects and evolve. Thank you.   Fields of Study Karl Haro von Mogel General, Part of a Series Summary of video content: Have you ever eaten one of those small PureHeart seedless watermelons, and wondered who made it? Have a look at the next installment of Fields of Study with Xingping Zhang, a commercial plant breeder who works on watermelons and other cucurbits. This video takes you to Khon Kaen, Thailand to a Syngenta breeding station where Xingping talks about how he became a plant breeder, and what you might want to know if you think this kind of career sounds exciting. Additional Information: Fields of Study What does that delicious sweet corn in the summertime, your front lawn, and the ethanol in your gas tank all have in common? They all come from plants. But perhaps more importantly, they come from plants that have been bred and selected from among thousands of others to become that one perfect produce in the supermarket aisle. In this series, accomplished plant breeders talk about what they do, and what makes it an exciting career for them. Vermicompost and Pythium Suppression Allison Jack General Summary of video content: Curious about biologically based suppression of plant diseases? Excess livestock manure can be recycled into a material farmers can use to prevent seedling damping off through the process of earthworm composting, or vermicomposting. This video explains how microbes present in vermicompost protect cucumber seeds from infection by the plant pathogen Pythium aphanidermatum. Animations and microscopy footage show seed colonizing bacteria from vermicompost interrupting the chemical signaling between the germinating seed and the pathogen's motile zoospores. This video is part of an ongoing disease suppressive vermicompost research project at Cornell University. Additional Information: Check out the full length video (10 min) at Cornell's vermicompost research outreach page: www.css.cornell.edu/cwmi/vermicompost.htm Grand prize winner of the 2010 American Phytopathological Society Office of Public Relations and Outreach video contest. www.youtube.com/user/plantdisease#p/u/34/60hmY4GLicU And a recent TV spot featuring project collaborators: www.innovationtrail.org/post/worm-power-high-tech-composting   Dioon Merolae Ruiz Zenteno Brizna Elizabeth General Summary of video content: La preservacion de estas areas en chiapas, es importante debido a que Dioon Merolae es la unica especie de cicaras nativas del estado; por lo que debemos hacer concienca de su manejo y conservacion. cupressus Itzel Xareny Villafuerte Sanchez Technical Summary of video content: este video habla a cerca de las caracteristicas morfologicas del genero cupressus, de igual forma se hace referencia de su importancia ecologica y economica.   Charlie Chaplin and The Mysterious Microscope Andrew Harrison General Summary of video content: In this video we used a Charlie Chaplin "spoof" This video will demonstrate that differential centrifuge, microscopy and staining are three important tools for study of plant cells. 1. under low speed of differential centrifuge, we can separate whole cells from the cell homogenate; 2. microscopy can reveal details of the cellular structures. 3. different staining methods can help us identify different organelles present in the plant cells. We made pea cell homogenate by using a blender, and then we did low speed centrifuge to pellet the whole cells out. After re-suspending the pellet, we made three slides, one control (without any staining), one stained with methylene blue, and one stained with Lugol's iodine. Methylene blue will stain nuclei deep blue. Thus, under light microscope, we will find that the nuclei and amyloplasts will be revealed by different staining. Seed Imbibition Robert Lewis Gerten General Summary of video content: This movie shows the phenomenon of seed imbibition. This movie was produced in the Saint John's University/ College of Saint Benedict Biology Department   Self-Incompatibility John Leonard & Kevin Hart & Ning AJ Wang & Chris Natale General Summary of video content: Self-Incompatibility (SI) is a self/non-self recognition mechanism that allows the pistil of flowering plants to distinguish between self (genetically related) and non-self (genetically unrelated) pollen to prevent inbreeding and promote out-crossing. We use Petunia inflata (a relative of garden petunia) as a model to study the SI mechanism possessed by three families of flowering plants. Breathing Krystle Padilla General Summary of video content: A dance parallel is used to show the concept that while guard cells are open, the plant is breathing, it is daytime and it is dry; while guard cells are closed, the plant is not breathing, it is nighttime and it has dew. The process from plant to microscope is shown so that viewers may know the origin of the microscope visuals.  

Created on Sep 07, 2010

Submitted Videos Contest 3 (Pages)

Welcome to ChloroFilms plant videos for CONTEST #3. Could be a BIG payday coming... Thank you for the entries! Arabidopsis Flower in 3D David Livingston Technical Summary of video content: Pixel-based images (JPEG) were digitally cleared using color-keying. This allowed visualization of internal structures in 3 dimensions. The technique is ideally suited for in situ hybridization analysis to detect mRNA in an anatomical context. To illustrate the technique, we used 248 sections of an Arabidopsis flower that was paraffin-embedded and sectioned at 20 microns. Sections were stained with Safranin and Fast Green and photographed with a consumer-grade camera mounted on a Nikon Eclipse 50i at 20X. JPEG images were imported into Adobe After Effects, manually aligned and built into a 3D volume. The last part of the video assigns a number to each section providing a catalog of the sections. This allows the researcher to quickly find a specific section(s) used in the reconstruction. Additional Information: Flower provided by Prof. Robert Franks, North Carolina State University, Dept of Genetics. Distortion-free sections prepared by Research Associate Tan Tuong. Graphic consulting provided by Randy Gelman, BeltlineMedia, www.beltlinemedia.com For more information see: Livingston et al 2010. 3D volumes constructed from pixel-based images by digitally clearing plant and animal tissue. Journal of Microscopy. In Press.   Pinaceae Eudoxio Santiz Guzman Technical Summary of video content: TRATA SOBRE LA FAMILIA PINACEAE, HABITAD, DISTRIBUCION, MORFOLOGIA, USOS. The Nitrogen Fixation Cycle: Presented by Dr. Undergrad. Thomas Miller General Summary of video content: Dr. Undergrad presents a basic introduction to the Nitrogen Fixation Cycle. In this cycle nitrogen is fixated to become more biologically available to the organisms of the world. Nitrogen from the atmosphere will be fixated into a nitrate or the ammonium ion. Once fixated there are a number of processes that the fixated nitrogen can undergo to pass through the cycle until it returns back to the atmosphere. This video was made for a contest hosted by www.chlorofilms.org. Special thanks to Dr. Adán Colón-Carmona for suggesting the nitrogen cycle as a topic for a new video.   Forests Kurt Reinhart General Summary of video content: A movie short showing the lives of plants in natural forests. This short illustrates the dynamics of forests, their environmental variability, and the reproductive structures (flowers) of trees and forbs. All content is of native plants and plant communities. Additional Information: All time-lapse videos and still photographs are the copyright of Kurt Reinhart. Most time-lapse videos shown can be found, along with ecological narratives, on Kurt’s educational website (www.iecology.net/). Music was generously provided and licensed by Moby for noncommercial film use (http://mobygratis.com/film-music.html). Although this movie has been uploaded to YouTube, I prefer the HD rendering available on Vimeo (http://vimeo.com/10858272). This movie will be entered in the 2010 Chlorofilms’ film contest (http://www.chlorofilms.org/). dioon merolae (espadaña) Cecilia Guadalupe hernandez tondopo General Summary of video content: es un video que describe aspectos importantes de dioon merolae una especie conocida en chiapas como espadaña..... en el se muestran aspectos como morfologia, distribucion y su uso, asi como la importancia que tiene en una celebracion religiosa para algunos fieles catolicos.   Chloroplasts and programmed cell death Arunika Gunawardena Technical Summary of video content: Chloroplasts and programmed cell death This is a lace plant leaf undergoing developmentally regulated programmed cell death (PCD) to form perforations. This short video clip illustrates streaming in lace plant leaf cells over a gradient of PCD stages: left (early stage), right (late stage). Note chloroplasts number declined steadily as stages of developmental PCD advance. So where are these chloroplasts going? Wright, et al., (2009). In vivo study of developmental programmed cell death using the lace plant (Aponogeeton madagascariensis; Aponogetonaceae) leaf model system (Appendix S8 [online]), American Journal of Botany 96(5) 865-876. Taxodium mucronatum aguilar perez ismael General Summary of video content: La familia taxodiace es conocido como ahuehuetes o Sequoias, son árboles bien desarrollados. Presentan ramillas y hojas persistentes o deciduas, sus hojas son escuamiformes o aciculares, algunas veces dimorfas, son plantas monoicas; con estróbilos masculinos estaminados, agrupados como ametos, ya sean axilares o terminales, las brácteas y las escamas están parcialmente fusionadas, estas son peltadas o planas, en la que cada escama produce de 2 a 9 semillas. The family is known as ahuehuetes taxodiace or Sequoias, trees are grown. They have twigs and evergreen or deciduous, its leaves are squamiform or acicular, sometimes dimorphic, are monoecious, with staminate male strobili, grouped as amet, whether axillary or terminal, bracts and scales are partially fused, they are peltate or flat, in which each scale produce from 2 to 9 seeds   Pinaceae Luis Roberto Perez Marcelin General Summary of video content: Description from Deedra McClearn's Fern Blog website: Why a Fern Blog from La Selva Biological Station in Costa Rica? I live in the middle of a magnificent rainforest in Costa Rica, surrounded by an amazing diversity of plants and animals. Although I am a biologist, most of my work these days is administrative. A couple of years ago, two fern biologist friends got me started on a fern collection to help keep me connected to the forest. This back-yard hobby now encompasses more than 30 genera of native La Selva ferns. I have also started a research project, monitoring the production and longevity of fronds of three different fern species in the forest. All of you fern experts and enthusiasts in other parts of the world may enjoy seeing these ferns, communicating with me about fern biology, and suggesting topics and video clips for inclusion on this blog. We have prepared a series of YouTube video segments on various fern-related subjects and we will post one every so often. Deedra McClearn CUPPESUS LUSITANICA SANCHEZ MORALES OSCAR RAUL Technical Summary of video content: El ciprés mexicano llega a medir de 30 a 40 m de altura, incluso más en su hábitat natural. Cuenta con un tronco recto de 1,5 a 2 m de diámetro, corteza rojiza marrón en ejemplares jóvenes y grisácea o blanquecina en los ejemplares centenarios. La copa es cónica, con ramas extendidas, monopódicas. La corteza es fisurada y el follaje es denso. Las hojas son escamosas, con márgenes lisos y enteros. Los conos son casi redondos, de 12 a 15 mm ubicados a lo largo de las ramas. Fructifica a partir de agosto a enero. La maduración de sus frutos se da de octubre a enero, se abren los conos con gran cantidad de semillas aladas.Forma bosques puros en su hábitat natural donde generalmente prevalece el clima frío húmedo, con suelos profundos y alto contenido en materia orgánica.Mexican cypress can measure from 10 to 40 m high, even more in their natural habitat. ,. The crown is conical, with spreading branches, monopodial. The bark is cracked and the foliage is dense. The leaves are scale, with smooth margins and whole. The cones are nearly round, located along the branches. cones open with lots of winged seeds. It forms pure forests in their natural habitat where generally cool, wet weather prevails, with deep soils and high organic matter content. Additional Information: este el el video que avia mandado , e sque el lotro se corto y no subio todo , pero ya esta completo espero su comprencion , saludos cordiales this is the video that had ordered, is that the other is short and not everything went up, but I hope your understanding is complete, best regards     La Selva's Fern Video Blog - 1 Andrew M. Irwin Part of a Series Summary of video content: Description from Deedra McClearn's Fern Blog website: Why a Fern Blog from La Selva Biological Station in Costa Rica? I live in the middle of a magnificent rainforest in Costa Rica, surrounded by an amazing diversity of plants and animals. Although I am a biologist, most of my work these days is administrative. A couple of years ago, two fern biologist friends got me started on a fern collection to help keep me connected to the forest. This back-yard hobby now encompasses more than 30 genera of native La Selva ferns. I have also started a research project, monitoring the production and longevity of fronds of three different fern species in the forest. All of you fern experts and enthusiasts in other parts of the world may enjoy seeing these ferns, communicating with me about fern biology, and suggesting topics and video clips for inclusion on this blog. We have prepared a series of YouTube video segments on various fern-related subjects and we will post one every so often. Deedra McClearn Additional Information: Fern Blog Video Series produced by: Andrew M. Irwin Producciones A.M.I. Video S.A. San Jose, Costa Rica +(506) 2234-5262 +(506) 8345-0774 La Selva's Fern Video Blog - 2 Andrew M. Irwin Part of a Series Summary of video content: Description from Deedra McClearn's Fern Blog website: Why a Fern Blog from La Selva Biological Station in Costa Rica? I live in the middle of a magnificent rainforest in Costa Rica, surrounded by an amazing diversity of plants and animals. Although I am a biologist, most of my work these days is administrative. A couple of years ago, two fern biologist friends got me started on a fern collection to help keep me connected to the forest. This back-yard hobby now encompasses more than 30 genera of native La Selva ferns. I have also started a research project, monitoring the production and longevity of fronds of three different fern species in the forest. All of you fern experts and enthusiasts in other parts of the world may enjoy seeing these ferns, communicating with me about fern biology, and suggesting topics and video clips for inclusion on this blog. We have prepared a series of YouTube video segments on various fern-related subjects and we will post one every so often. Deedra McClearn Additional Information: Fern Blog Video Series produced by: Andrew M. Irwin Producciones A.M.I. Video S.A. San Jose, Costa Rica +(506) 2234-5262 +(506) 8345-0774   La Selva's Fern Video Blog - 3 Andrew M. Irwin Part of a Series Summary of video content: Description from Deedra McClearn's Fern Blog website: Why a Fern Blog from La Selva Biological Station in Costa Rica? I live in the middle of a magnificent rainforest in Costa Rica, surrounded by an amazing diversity of plants and animals. Although I am a biologist, most of my work these days is administrative. A couple of years ago, two fern biologist friends got me started on a fern collection to help keep me connected to the forest. This back-yard hobby now encompasses more than 30 genera of native La Selva ferns. I have also started a research project, monitoring the production and longevity of fronds of three different fern species in the forest. All of you fern experts and enthusiasts in other parts of the world may enjoy seeing these ferns, communicating with me about fern biology, and suggesting topics and video clips for inclusion on this blog. We have prepared a series of YouTube video segments on various fern-related subjects and we will post one every so often. Deedra McClearn Additional Information: Fern Blog Video Series produced by: Andrew M. Irwin Producciones A.M.I. Video S.A. San Jose, Costa Rica +(506) 2234-5262 +(506) 8345-0774 La Selva's Fern Video Blog - 4 Andrew M. Irwin Part of a Series Summary of video content: Description from Deedra McClearn's Fern Blog website: Why a Fern Blog from La Selva Biological Station in Costa Rica? I live in the middle of a magnificent rainforest in Costa Rica, surrounded by an amazing diversity of plants and animals. Although I am a biologist, most of my work these days is administrative. A couple of years ago, two fern biologist friends got me started on a fern collection to help keep me connected to the forest. This back-yard hobby now encompasses more than 30 genera of native La Selva ferns. I have also started a research project, monitoring the production and longevity of fronds of three different fern species in the forest. All of you fern experts and enthusiasts in other parts of the world may enjoy seeing these ferns, communicating with me about fern biology, and suggesting topics and video clips for inclusion on this blog. We have prepared a series of YouTube video segments on various fern-related subjects and we will post one every so often. Deedra McClearn Additional Information: Fern Blog Video Series produced by: Andrew M. Irwin Producciones A.M.I. Video S.A. San Jose, Costa Rica +(506) 2234-5262 +(506) 8345-0774   La Selva's Fern Video Blog - 5 Andrew M. Irwin Part of a Series Summary of video content: Description from Deedra McClearn's Fern Blog website: Why a Fern Blog from La Selva Biological Station in Costa Rica? I live in the middle of a magnificent rainforest in Costa Rica, surrounded by an amazing diversity of plants and animals. Although I am a biologist, most of my work these days is administrative. A couple of years ago, two fern biologist friends got me started on a fern collection to help keep me connected to the forest. This back-yard hobby now encompasses more than 30 genera of native La Selva ferns. I have also started a research project, monitoring the production and longevity of fronds of three different fern species in the forest. All of you fern experts and enthusiasts in other parts of the world may enjoy seeing these ferns, communicating with me about fern biology, and suggesting topics and video clips for inclusion on this blog. We have prepared a series of YouTube video segments on various fern-related subjects and we will post one every so often. Deedra McClearn Additional Information: Fern Blog Video Series produced by: Andrew M. Irwin Producciones A.M.I. Video S.A. San Jose, Costa Rica +(506) 2234-5262 +(506) 8345-0774 Idioblsts in Action Joseph T Carr General Summary of video content: Raphids were filmed ejecting from Idioblasts using light microscopy.   Meta!Blast Videogame: The trailer Eve Syrkin wurtele Part of a Series Summary of video content: Meta!Blast Videogame Trailer It is the year 2052. An unknown pathogen is decimating plant life and consequently our atmosphere. What is the pathogen and how can it be stoped? You, a lowly lab dishwasher, can enter an infected cell and test your wits using the ship's arsenal of biotools. Get ready for a metabolic adventure.... Additional Information: The first of 17 modules in the Meta!Blast videogame, encompassing bioenergetics and the light reactions, is scheduled for release this summer. Credits Eve Syrkin Wurtele - Director and Metabolic Biology Diane C. Bassham - Associate Director and Cell Biology Julie Dickerson - Computer Engineering David Kabala - Lead Programmer William Schneller - Art Director Trevor Brown, Mike Rinnan, Izaak Moody - Artists Thanks to National Institutes of Health; National Science Foundation; and College of Liberal Arts and Science at Iowa State university Fatty Acid Synthesis in Plants Debbie Swarthout Technical Summary of video content: The video clip uses a pedagogical style of multiple choice questioning to teach the basic steps about fatty acid synthesis in plants. Each question delivers what is currently known about this biochemical attribute in plants. The acoustic guitar music mixed with resonator bars and tapping, provides a soothing blend to the intense details that are being described in the questions. The animation simply facilitates our current understanding of the very first rate-limiting step in fatty acid synthesis. The video clip was made to publicly broadcast the scientific contributions that plant biologists have made to the field of lipid biochemistry. It is intended to serve as a useful teaching tool in undergraduate plant physiology and biochemistry courses across the world.   video cycadas chlorofilms carolina Sanchez Olmedo General Summary of video content: Generalidades de cycadas,Distribucion y especies en Mexico y Chiapas, especies en peligro de extincion. Additional Information: video elaborado para la materia de botanica II, de la facultad de ciencias biologica de la Universidad de Ciencias Biologicas de Chiapas. In the Heat of the Night Sharon Robinson General Summary of video content: This video introduces the fascinating world of Hot Plants, flowers that generate heat (thermogenesis) to release scents and attract pollinators. We look at three thermogenic plant species, the monocots Philodendron bipinnatifidium and Colocasia esculenta and the eudicot, Nelumbo nucifera. Some plants such as Philodendron and Sacred lotus are also able to regulate their floral temperature, maintaining their flowers at up to 30 ?C above air temperatures over several days. Our research team is investigating how plants produce this heat and how they can regulate their temperature so precisely. We are also interested in why the plants produce heat. Is it to release particular scents to attract pollinators, to give a heat reward to the insects or does it also help the plant’s reproductive development? Additional Information: Grant NM, Miller RE, Watling JR, Robinson SA (2008) Synchronicity of thermogenic activity, alternative pathway respiratory flux, AOX protein content and carbohydrates in receptacle tissues of sacred lotus during floral development. Journal of Experimental Botany 59 705-714. http://jxb.oxfordjournals.org/cgi/content/full/59/3/705 Grant, N., Onda, Y., Watling, J., Ito, K., Robinson, S.A. Two Cys or not two Cys, that is the question? Alternative oxidase regulation in the sacred lotus. Plant Physiology 150 987-995. http://www.plantphysiol.org/cgi/content/full/150/2/987 Seymour RS. (2001) Biophysics and Physiology of temperature regulation in thermogenic flowers. Bioscience Reports. 21 223-236. Seymour RS & Ito K. (2006) Temperature Regulation by Thermogenic Flowers – Plant Physiology online http://4e.plantphys.net/article.php?ch=11&id=126 Watling, J.R., Robinson, S.A. Seymour, R.S (2006) Contribution of the alternative pathway to respiration during thermogenesis in flowers of the sacred lotus. Plant Physiology 140, 1367-1373      

Created on Apr 20, 2010

Submitted Videos - Contest 2 (Pages)

Welcome to ChloroFilms plant videos for CONTEST #2. Could be a BIG payday coming... Thank you for the entries! Triphyophyllum peltatum the clandestine carnivorous plant Siegfried R.H. Hartmeyer Technical Summary of video content: The African liana Triphyophyllum peltatum is the largest of all carnivorous plants (CP) on earth, but strange enough the rarest in cultivation. Due to civil wars and difficult conditions the Western African rainforests are poorly explored and for a long time not very much was known about the hooked leaved lianas of the botanical family Dioncophyllaceae. Thanks to the generous donation of photos from a pioneering project at the University Wuerzburg (Germany) by Dr. Jan Schlauer and Dr. Heiko Rischer, and even first video shots from the habitat in Sierra Leone by Stewart McPherson, we are now able to show the complete live-cycle of the really clandestine carnivorous plant Triphyophyllum peltatum. This film has been edited as a lecture for the European CP Conference 2008 in Mira, Italy. Additional Information: I confirm that we (my wife Irmgard and I) own the copyright for this documentary and that we have the permission by Dr. Jan Schlauer, Dr. Heiko Rischer and Stewart McPherson to use their photos and video for our movie.   Sophisticated survival strategies of the annual Drosera Siegfried R.H. Hartmeyer Technical Summary of video content: This footage shows the sophisticated survival strategies of the annual sundews. Living a full life-cycle, from germination to flowering and seed-production, within one single season needs highly effective trapping strategies to get enough protein. The sundews in section Arachnopus, Coelophylla and Thelocalyx manage that with the most prominent and fast snap-tentacles, yellow light reflecting lens-headed tentacles and other adaptations to make as much prey as possible, and to produce seeds even under bad conditions. Our film shows several pictures of these species that have never been shown before. Additional Information: We (my wife Irmgard and I) own the copyright for this film and have permission to use the picture of Dr. Barry Rice, and the SEM images made by Dr. Regina Kettering, for our common project with Prof. Dr. Stephen Williams, to investigate the lens-tentacles of Drosera hartmeyerorum. Enjoy Your Meal Part 1: Mice eating Nepenthes truncata Siegfried R.H. Hartmeyer Technical Summary of video content: Part 1: A garden pond wich contains small peaty islands for Darlingtonia, Dionaea, Drosera and Sarracenia does not only look nicely in the early summer, as it is also soon attracting small animal carnivores as amphibes, reptiles and predatory insects like dragon flies and mantis. But there is even more to be seen when a large Roridula dentata at our balcony catches a big wasp which is immediately attacked by a hungry Pameridaea bug. And things become actually dramatically with the pictures of our multifold mice killing Nepenthes truncata. Additional Information: We (my wife Irmgard and I) own the copyright for this video series in 2 parts.   Enjoy Your Meal Part 2: Enzyme-testing with Byblis, Drosera and Roridula Siegfried R.H. Hartmeyer Technical Summary of video content: Part 2: Carnivorous plants digest their prey with proteolytic enzymes, or they profit from the enzymes in the stomache of mutualistic arthropodes living on the plant. But how is it possible to detect the enzymes. Fortunately there exists a simple and cheap adapted photo-film test for plants with sticky traps that is suitable for your own experiments or the use in schools. This film shows the procedure of the test with Byblis filifolia, Byblis liniflora, Drosera adelae, and Roridula dentata. Also possible problems with the evaluation of the test strips are discussed in detail. Well, you may understand the end of this part 2 only if you have seen part 1(smile!). Additional Information: We (my wife Irmgard and I) own the copyright for this video series in 2 parts. Time-Lapse Characterization of Arabidopsis Starch Metabolism Mutants Zach Jarou Technical, Part of a Series Summary of video content: During the early exponential growth phase of plants, the majority of photoassimilates are reinvested into new leaf material. Leaf area, one of many growth parameters, has been examined by time-lapse photography in Arabidopsis starch metabolism mutants. The irregular shape of leaves can make measurement by traditional means difficult, especially for large numbers of plants. By taking a digital picture of the leaves to be measured, along with an object of known size, the pixel area of the leaves can be can quantified into physical units. This is accomplished using the color range and histogram tools in Adobe Photoshop. A screen capture demonstration of this process is available on YouTube (http://www.youtube.com/watch?v=E3O-V6WLw0g). The accompanying song, “Claire de Lune,” was composed by Claude Debussy and performed by pianist Van Cliburn.   Reincarnation of Trudy, a Titan arum in Berkeley Seung Yon (Sue) Rhee General Summary of video content: This video shows shows the rapid growth and 'flowering' of the inflorescence of Titan arum (commonly known as the corpse plant) at the UC Botanical garden in Berkeley in June of 2009. Affectionately called 'Trudy' by the garden staff, this plant grew at an average of 2-3 inches per day for about a week until the spathe (the dark purple 'skirt' of the plant) started opening on June 23, 2009. During flowering, the plant makes rotting-flesh smell by producing stinky metabolites, putrescine and cadaverine, to attract flies and beetles to pollinate. Out of Thin Air Nancy Muleady-Mecham General Summary of video content: This is a audio/visual reading of the illustrated book, Out of Thin Air, A Story of Big Trees, by Nancy Muleady-Mecham, submitted for consideration by www.chlorofilms.org botany movie contest. It is a story about where trees com from and how important they are to the carbon cycle of our planet. Illustrated by Robert Muleady, Designed by Sandra Kim Muleady. Copyright 2009 by Nancy Muleady-Mecham. Additional Information: The fidelity of the You Tube video does not do the film justice. It looks grainy and colorless compared to the original wmv which is available. Thank you.   Kenaf Callus Hoedown Noah Flanigan General Summary of video content: Our video is intended to be a quirky and fun, yet informative demonstration on the early steps required to initiate a plant tissue culture. We employed stop motion techniques throughout the film to show seed sterilization and germination to provide axenic plant tissue for culture. This is followed by sterile dissection of cotyledon and hypocotyl regions which were placed on a complete culture medium containing MS salts, vitamins, sucrose, an auxin, and a cytokinin to generate callus. Callus growth was followed over the course of three weeks. The resulting undifferentiated tissue dances with joy at the growth potential it possesses. A Leaf is born-The Microscopical Initiation of a Leaf through the Lens of a Scanning Electron Microscope Md. Shafiullah Technical Summary of video content: Plants produce food for other living organisms through a process called photosynthesis and the factory of the produced food is the leaf. How the leaf is produced from a mass of cells is shown in this video through the lens of a scanning electron microscope. This work is the part of the research project of Md. Shafiullah who created the video in collaboration with his supervisor C. R. Lacroix, Professor of Biology at the University of Prince Edward Island, in Canada. All rights are reserved to the members of the Morphospace Laboratory, Dept. of Biology, and University of Prince Edward Island, Canada.   Venus Flytrap Video Scott Klasek General Summary of video content: This video is a compilation of clips of Venus Flytrap (Dionaea muscipula) snap traps opening and closing, set to an edited version of Leonard Bernstein's Candide Overture. I selected this music because its spontaneous dynamic changes and comic, upbeat melody pair well with the abrupt movement of the snap traps. Many clips are time-lapsed, sped up, and even played backwards, and although they might not reflect the accurate, real-time movement of the traps, they clearly illustrate a few points that are often overlooked about these fantastic plants: they grow in wet, swampy conditions, their trap leaves include hairs that initiate closing once they are stimulated twice by movement, and that the traps eventually reopen after closing. These are some of the details that are to be noted, as they are not common knowledge to most people. However, given the simplicity of the video, it is intended for a general audience, and will hopefully invoke amusement and speculation into the detailed workings of this magnificent and unusual plant. Additional Information: I hope you enjoyed it. It was fun to make! Pollination Methods: Solanum Part 1 Karl Haro von Mogel Technical, Part of a Series Summary of video content: Pollination Methods: Solanum is part of a series of step-by-step, instructional videos on how to make controlled crosses with plants. The videos will cover a wide range of techniques applicable to open-pollinated, insect-pollinated, and self-pollinated crops, ranging from agronomic to horticultural species. The controlled pollination method videos are technically-oriented and are targeted to high school and college students with some background in plant biology. They will be useful for students learning about plant breeding methods, and may be of interest to backyard and commercial hybridizers of various crops. The Solanum video explains the biology and origin of tomato and potato species and how to make controlled crosses with those plants yourself. Some of the methods commercial seed producers use are mentioned, and finally, the concept of polyploidy is explained with potatoes, and how breeders take it into account when breeding new varieties. Additional Information: This video has been split into two parts. For a full-length, higher-quality version of the video, or to download it to your computer, visit: http://www.wisconsinplantbreeding.com/educators/videos/pollination-methods-solanum/.   Pollination Methods: Solanum Part 2 Karl Haro von Mogel Technical, Part of a Series Summary of video content: Pollination Methods: Solanum is part of a series of step-by-step, instructional videos on how to make controlled crosses with plants. The videos will cover a wide range of techniques applicable to open-pollinated, insect-pollinated, and self-pollinated crops, ranging from agronomic to horticultural species. The controlled pollination method videos are technically-oriented and are targeted to high school and college students with some background in plant biology. They will be useful for students learning about plant breeding methods, and may be of interest to backyard and commercial hybridizers of various crops. The Solanum video explains the biology and origin of tomato and potato species and how to make controlled crosses with those plants yourself. Some of the methods commercial seed producers use are mentioned, and finally, the concept of polyploidy is explained with potatoes, and how breeders take it into account when breeding new varieties. Additional Information: This video has been split into two parts. For a full-length, higher-quality version of the video, or to download it to your computer, visit: http://www.wisconsinplantbreeding.com/educators/videos/pollination-methods-solanum/. Vitamin C and Water in Plants Debbie Swarthout General Summary of video content: This video provides a description of the role that vitamin C plays in preventing plants from molecular damage caused by excess sunlight. Light-induced damage is a major limitation on crop productivity. This animation makes use of computational tools to produce a musical rhythym that follows part of the genomic sequence of a crucial mitochondrial enzyme that is used in the final production of Vitamin C (ascorbate) in the widely investigated mustard relative, Arabidopsis thaliana. A special set of rules was written to assign musical notes to the four genomic bases, A,T, G,C. It was fun writing the music notation from the genomic sequence. The video was created with the intention of educational use in high schools and undergraduate plant biology classrooms across the globe.  

Created on Jan 09, 2010

Plant Cell Motility and Laser Microsurgery of Cytoplasmic Strands (crpVideo)

Plant cells are shaped by rigid cell walls. Osmotic forces press the plasma membrane tightly against these walls. The walls can be removed with enzymes. The remaining structures, the protoplasts, are now bordered by the plasma membrane. Since the shaping force of the wall is missing, isolated plant protoplasts are usually perfectly spherical in shape as a result of non-directional osmotic forces. However, not all isolated plant protoplasts are spherical. Through cytoplasmic streaming, cytoplasmic strands continuously change their length, branching and attachment, and as a result the shape of the protoplast may change. A laser microsurgery experiment provides proof that the inner tension built by the cytoplasmic network is moving the cell. A laser beam focused at a cytoplasmic strand will cut the strand and cause the network to collapse without destroying the integrity of the cell. As a result osmotic forces can take over and round the protoplast. Moving around is not an option for most cells of higher plants, and cytoplasmic streaming serves normally the intracellular transport - but they have not totally lost the basic skills that would enable them to move.

Created on Apr 17, 2009

Measuring Leaf Area with Adobe Photoshop CS3 (crpVideo)

This video tutorial demonstrates how to use Photoshop to measure leaf area, an important metric for use in plant growth analysis. The purpose of this tutorial is to demonstrate how to use Adobe Photoshop to determine the exposed surface area of plants leaves for use in growth analysis research. Let's get started. Using the marquee tool, located to the left of the image viewing area, make a rough selection of the area of interest. In our case, we will be selecting three plants of the same phenotype for which we would like to obtain an average size. Next, open the color range tool, located under "Select" on the Main Menu. Once the dialogue box is open, ensure that the radio button is on "Selection" and the Selection Preview drop-down is set to "Black Matte." Begin by making an initial selection of the plant using the eyedropper tool in either the image viewing window or the color range dialogue box. Notice how the selection gradient changes depending upon which part of the plant is selected first. To capture the full area of the leaf, hold down shift & click the darker areas of the leaves. Notice how the eyedropper has changed to include a plus sign. The selection area can also be increased by dragging the "Fuziness" bar to the right. Do this slowly so that you can continue to add hues along the way. Finally, to ensure no tones are left out, increase the fuziness as much as you can, until the point where unwanted regions of the image are added to the selection, such as the growing container or soil artifacts. To finalize the selection, simply click the "OK" button. Now that the leaves have been selected, it is necessary to find the number of pixels within the selection. This can be done

Created on Apr 14, 2009

Pressure bomb (crpVideo)

applied to force water out of the leaf cells into the xylem is regarded as equal to the xylem tension when the leaf was cut from the plant. This video was created to serve as visual instruction in a Plant Physiology course (HORT301) at Purdue University. Videos are powerfull tools to present experimental approaches, research methodology, and theory that the students have to deal with during their course work. This is especially true for experimental components of plant biology courses where students have to work hands-on with material and equipment which is often new to them. This way, additional background material that explains necessary equipment, concepts and essential steps of an experimental procedure can be made accessible as a video reference on course websites. This will engage students in critical discussion with contemporary research and permit its presentation to peers in the course and the public. The idea is for students to translate basic scientific information into a more popular visual language, that engages the students. The objective is not to let the students do the work of generating teaching material, but involve them in a process of active and action learning which enhances the study success and connects the students with the course

Created on Apr 12, 2009

The Science of Cool (crpVideo)

This video is about plants that are found around the coast of Antarctica. Mosses are the dominant plants that grow around the coast of the Antarctic continent. Vascular plants are restricted to the Antarctic peninsula where conditions are slightly less extreme. Firstly this video seeks to explain how mosses survive in this inhospitable environment. Secondly I talk about how three species of Antarctic moss are being impacted by the ozone hole, and resulting increased ultraviolet radiation over Antarctica. Finally I discuss how recent climate change is affecting biodiversity and the consequences that this will have. The video represents a brief overview of my research into this area over the past decade. I hope that it is informative and interesting, but also makes people aware of the impacts of climate change across the globe and the need to act immediately to reduce our carbon

Created on Apr 12, 2009

fantastic vesicle traffic (crpVideo)

The miracle of life relies in its cells.The root hair is one of the fastest growing cells in the plant. To allow this rapid growth, continuous delivery of membrane and cell wall material to the growing tip of the hair cell is required. A component part of this material is protein, which is synthesized by ribosomes along the Endoplasmic Reticulum, modified in the Golgi apparatus and packaged into vesicles. The vesicles are finally delivered to the plasma membrane by motor proteins along the cytoskeleton. How do vesicles find their target membranes? The specificity of target recognition is mediated by the interaction of v-SNARE proteins on the vesicle surface with t-SNARE proteins on the target membrane. Among others, small G-proteins regulate this process. One group of small G-proteins is the so-called RabGTPases. To visualize the distribution of such a RabGTPase proteins within the cells, they are tagged with the Green Fluorescent Protein. The video shows the germination

Created on Apr 12, 2009

Dying to live: programmed cell death in lace plant cells (crpVideo)

Perforation formation in the aquatic lace plant leaf is a unique and fascinating example of developmental programmed cell death (PCD). This unique plant is an excellent model for studying developmental PCD in vivo. Here we demonstrate some cellular changes that occur in lace plant leaf cells during the late stages of PCD using a 15 min time-lapse video (played at 50x speed). A rapid shrinkage of the nucleus and cessation of cytoplasmic streaming likely infers tonoplast rupture; the Brownian motion of condensed, white chloroplasts continues, but is soon followed by the collapse of the plasma membrane. Note the novel chloroplast ring formation around nuclei commonly observed in late stage lace plant PCD. Wright, H., van Doorn W., and Gunawardena, AHLAN (2009). In vivo study of developmental programmed cell death using the lace plant (Aponogeeton madagascariensis; Aponogetonaceae) leaf model system (Appendix S5 [online]), American Journal of Botany 96(5)

Created on Mar 28, 2009

Serotiny in Jack Pines (Growing Better) (crpVideo)

pine cones with a group of local kids. The concept behind this series is that we feel there are already plenty of animal shows, but not enough (if any) plant shows. We don't need another gardening program. What we need are fun, adventurous, and educational shows about plants that play similarly to things like "The Crocodile Hunter" or, perhaps, Alton Brown. We'd like to head in one of those directions,

Created on Mar 27, 2009

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