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A cryoprotective polypeptide isolated from Nothofagus dombeyi seedlings |
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| Institution: | 1. The Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Kraków 30-239, Poland;2. Department of Plant Breeding, Physiology, and Seed Science, University of Agriculture, Kraków 30-239, Poland;3. Department of Horticulture, Iowa State University, Ames, IA 50010, USA |
| Abstract: | A comparative study of soluble proteins of N. dombeyi seedlings showed significant differences between electrophoretic patterns of cold-conditioned samples (48 hr at 0°) and control seedlings kept at 18°. A cold-induced polypeptide with apparent Mr of 35 k was isolated. The polypeptide showed an ability to protect isolated thylakoid membranes against freezing in comparison to low Mr cryoprotectants. The isolated protein may play a role in the development of freezing tolerance. |
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