Dehydrins associated with the development of frost resistance of Asian white birch

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• 作者：A. G. Ponomarev (1)
  T. D. Tatarinova (1)
  A. A. Perk (1)
  I. V. Vasilieva (1)
  V. V. Bubyakina (1)
  
• 关键词：Betula platyphylla ; cryolithic zone of Yakutia ; frost resistance ; dehydrins ; seasonal variation ; intraspecies polymorphism
• 刊名：Russian Journal of Plant Physiology
• 出版年：2014
• 出版时间：January 2014
• 年：2014
• 卷：61
• 期：1
• 页码：105-111
• 全文大小：692 KB
• 作者单位：A. G. Ponomarev (1)
  T. D. Tatarinova (1)
  A. A. Perk (1)
  I. V. Vasilieva (1)
  V. V. Bubyakina (1)
  
  1. Institute of Biological Problems of Cryolithozone, Siberian Branch, Russian Academy of Sciences, pr. Lenina 41, Yakutsk, 677980, Russia
  
• ISSN：1608-3407

文摘

Seasonal changes in the content of dehydrins in Asian white birch (Betula platyphylla Sukacz.) growing under extreme cold conditions of Eastern Siberia (Central Yakutia) were studied for the first time by SDS-PAGE and immunoblotting. Several polypeptides, including putative storage proteins, which content was higher in winter than in other periods, were observed. Intraspecies polymorphism of dehydrins was detected during plant dormancy. The two groups of dehydrins were found: dehydrins with mol wts of 56-73 kD, which were present year-round, and dehydrins with mol wts of 15-1 kD, evidently related to the development of frost resistance because they were absent in summer but present in large amounts in winter. Under low winter temperatures, the highest level of dehydrins coincided with the lowest content of water in buds, which was accompanied by increased plant frost resistance to the highest values.