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Submitted Videos Contest 4 (Pages)

Welcome to ChloroFilms plant videos for CONTEST #4. Could be a BIG payday coming... Thank you for the entries! 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

Created on Sep 07, 2010

All Session WINNERS (Pages)

MENTIONS Foil Flower, Author: Craig Dehner - VIEW VIDEO General Dying to live: programmed cell death in lace plant cells, Author: Arunika Gunawardena - VIEW VIDEO Technical Alternative Transposition Generates New Genes by Exon Shuffling, Author:

Created on Aug 31, 2010

Submitted Videos Contest 3 (Pages)

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

Created on Apr 20, 2010

Submitted Videos - Contest 2 (Pages)

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.

Created on Jan 09, 2010

ChloroFilms Session 1 WINNERS (Pages)

MENTIONS Foil Flower, Author: Craig Dehner - VIEW VIDEO General Dying to live: programmed cell death in lace plant cells, Author: Arunika Gunawardena - VIEW VIDEO Technical Alternative Transposition Generates New Genes by Exon Shuffling, Author:

Created on May 13, 2009

Calcium makes guard cells move! (crpVideo)

Cytosolic calcium plays a central role in cell signaling. In plants, specific information for stomatal guard cell movements is encoded in cytosolic calcium. This movie shows changes in cytosolic ...

Created on Apr 17, 2009

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

Created on Apr 17, 2009

Pressure bomb (crpVideo)

by a “pressure bomb”. Tension pressure in a non-transpiring leaf is “equivalent” to water potential of cells surrounding the xylem (mesophyll cells), because the xylem’s osmotic potential is negligible. A single leaf is sealed in the pressure chamber with the cut surface protruding through a rubber stopper. Pressure is applied to the shoot from a tank of compressed air (or nitrogen) until xylem sap appears at the cut ends of the xylem. The hydrostatic pressure inside the xylem elements is then identical to the applied external pressure. The amount of pressure that must be 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

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 of Arabidopsis thaliana seeds, zooming in

Created on Apr 12, 2009

"Sweet Home Apparatus" - the ultimate Golgi music video (crpVideo)

of the plant secretory pathway and use a lot of confocal laser scanning/electron microscopy to take a closer look at our plant cells. When we discovered David Mansfield's song "Sweet Home Apparatus" online, we thought that the combination between his song about

Created on Apr 03, 2009

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