AZione Della Luce Sull'Assorbimento Salino Da Parte Di Tessuti Clorofilliani In Ambiente Privo Di CO2 |
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| Authors: | Renato Bianchetti |
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| Institution: | Laboratories di Fisiologia Vegetale dell'Istituto di Scienze Botaniche dell'Università di Milano , Centro di Studi per le ossido-riduzioni nei vegetali del C.N.R. |
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| Abstract: | Abstract Effect of light on uptake by photosynthetic tissues in the absence of co2. — The effect of light and of CO2 on the uptake of 86Rb and -32P by isolated leaves of Elodea canadensis has been studied. The uptake of both these ions is strongly stimulated by light both in the presence and in the absence of CO2. In the case of phosphate, light stimulates uptake and inhibits the leakage of the ion from the tissues. These results which confirm and extend the results of other Authors, support the conclusion that the stimulation by light of active uptake of solutes by green tissues is physiologically relevant. Furthermore, they suggest that the utilization of light energy for active uptake does not depend on CO2 fixation and assimilation. |
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