Longevity of Guard Cell Chloroplasts in Falling Leaves: Implication for Stomatal Function and Cellular Aging
- 12 November 1982
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 218 (4573) , 680-682
- https://doi.org/10.1126/science.218.4573.680
Abstract
Guard cell chloroplasts in senescing leaves from 12 species of perennial trees and three species of annual plants survived considerably longer than their mesophyll counterparts. In Ginkgo biloba , stomata from yellow leaves opened during the day and closed at night; guard cell chloroplasts from these leaves showed fluorescence transients associated with electron transport and photophosphorylation. These findings indicate that guard cell chloroplasts are highly conserved throughout the life-span of the leaf and that leaves retain stomatal control during senescence.This publication has 9 references indexed in Scilit:
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