Lecture_5_Plasmodesmata

Lecture_5_Plasmodesmata - Re w of Le vie cture4 1 2 3 4 5...

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Review of Lecture 4 1. Communication Networks 2. Apoplastic and Symplastic domains 3. Plant Cells and Cell Walls 4. Implications for intercellular signaling 5. Cell markers
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FromLucas and Lee. 2004. NatureReviews Molecular Cell Biology 5 :712-726. Biological Evolution of Communication Networks
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Apoplast and Symplast vacuole vacuole apoplast symplast
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Sex and the single cell Multipleinteractions with rapid and conditional selection mediated by cell wall-based factors Pollen-Stigma Interactions 1. Adhesion 2. Hydration 3. Germination 4. Tube growth
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Plasmodesmata FromRaven, Evert and Eichhorn. 2005. Biology of Plants. Freeman and Company Publishers
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http://www.tulane.edu/~dmsander/WWW/335/pdtitle.gif pegacat.com/cbetts/ phd/cellintro/cellintro.html Hypothetical 3D Structure Actin Plasma Membrane Proteinaceous struts desmotubule
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Plasmodesmata Movement of green fluorescent protein FromKim, J-Y. 2005. Current Opinion in Plant Biology 8 :45-52 Viral movement protein Nuclear localization Transcriptional regulator
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Key Concept Cell-autonomous vs.. non-cell autonomous markers Ashley Force
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Cell-Autonomous Markers Following and finding the mini over timeand spaceis made easy becauseit can betracked by its appearanceand by its VIN number or licenseplate. Thesefeatures do not change if the car is parked next to a Porsche and are therefore autonomous.
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Non-Cell Autonomous Markers Ashley uses thecar to get from point A to point B but has other transportation options and varies her points of departure and her destinations. Sometimes other peopleborrow her car. Tracking Ashley over timeand space is therefore morecomplicated. Shemust be ‘tagged’ in someway if weareto follow her movements over time and space. Drivers a non-autonomous feature of thecar.
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