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Biology Bulletin of the Russian Academy of Sciences

, Volume 30, Issue 5, pp 464–467 | Cite as

Involvement of Oligosaccharides in Adaptation of Winter Wheat Seedlings to Subzero Temperatures

  • O. A. Zabotina
  • D. A. Ayupova
  • T. E. Toroshchina
  • A. I. Zabotin
Article
  • 23 Downloads

Abstract

We studied the dynamics of endogenous content of biologically active oligosaccharides in the roots of winter wheat seedlings. Previously, these oligosaccharides proved to mediate the development of frost resistance during the first days of hardening (Zabotinaet al., 1998). The changes in their endogenous content can be described by a curve with a single peak observed 6 h after the onset of frost hardening. The capacity of these polysaccharides to increase frost resistance (LT50was evaluated by leakage of electrolytes) when added to growth medium did not depend on the pretreatment duration (from 1.5 to 18 h) but decreased if they were introduced in the course of the adaptive response. Inhibition of the adaptive response by inhibitors of RNA and protein synthesis ceased in the presence of the oligosaccharides. We believe that the oligosaccharides that are products of metabolism of the cell wall polysaccharides are involved in adaptation to low temperature.

Keywords

Cell Wall Polysaccharide Protein Synthesis Growth Medium Oligosaccharide 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© MAIK “Nauka/Interperiodica” 2003

Authors and Affiliations

  • O. A. Zabotina
    • 1
  • D. A. Ayupova
  • T. E. Toroshchina
    • 1
  • A. I. Zabotin
    • 1
  1. 1.Russian Academy of SciencesKazan Institute of Biochemistry and BiophysicsKazanRussia

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