Seasonal Changes in the Composition and Content of Dehydrins in Winter Wheat Plants

Seasonal Changes in the Composition and Content of Dehydrins in Winter Wheat Plants Seasonal changes in the pattern and content of dehydrins in winter wheat (Triticum aestivum) plants grown under field and laboratory conditions were studied by one-dimensional PAGE and immunochemical methods. During hardening, plants accumulated dehydrin-like polypeptides with mol wts of 209, 196, 66, 50, and 41 kD. In winter, low-molecular-weight dehydrins with mol wts of 24, 22, 17, 15, and 12 kD were synthesized and accumulated as well. Their content dropped sharply in spring when plants became unhardened. Accumulation/disappearance of these proteins corresponded to the fluctuations in wintering plant frost tolerance before winter and in spring. It is assumed that both high- and medium-molecular-weight dehydrins are involved in plant stress responses and adaptation, whereas low-molecular-weight dehydrins are evidently involved only in the process of low-temperature adaptation. Russian Journal of Plant Physiology Springer Journals

Seasonal Changes in the Composition and Content of Dehydrins in Winter Wheat Plants

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Kluwer Academic Publishers-Plenum Publishers
Copyright © 2004 by MAIK “Nauka/Interperiodica”
Life Sciences; Plant Sciences
Publisher site
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