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Unformatted text preview: plasmodesmata to the xylem B.4. B.5. Plasmodesmata are strands of protoplasm connecting parenchyma cells. C. Water Deficit Stress C.1. Why study water movement and water-deficit responses? Most plant productivity is water-limited Water availability may decrease in may agricultural areas in the future The human population is still growing C.2. Stages of Water Deficit Mild Stress- No wilting, frequent in afternoons C.2. .a. Problems very low growth Moderate Stress- some afternoon wilting C.2. .a. Problems reduction in photosynthesis by 50%, no growth in the afternoon, but still at night Severe stress- wilting most of the day C.2. .a. Problems no growth and low photosynthesis occurrences C.2. .b. Membrane damage in Parenchyma cells and protein denaturation are two things that will kill the...
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- Spring '09