Metabolism of Oat Leaves during Senescence : VIII. The Role of L-Serine in Modifying Senescence |
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Authors: | Veierskov B Satler S O Thimann K V |
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Institution: | The Thimann Laboratories, University of California, Santa Cruz, California 95064. |
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Abstract: | The mechanism whereby l-serine specifically promotes the dark senescence of detached oat (Avena) leaves has been examined. The fact that this promotion is strong in darkness but very weak in white light has been explained, at least in part, by the finding that added serine is partly converted to reducing sugars in light. Labeled serine gives rise to 14C-sugars and 14CO2. In the absence of CO2, serine does cause chlorophyll loss in light and undergoes a decreased conversion to sugar. |
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