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Metabolism of polyamines in NaCl-resistant cell lines from Nicotiana sylvestris

  • N. I. Shevyakova
  • B. P. Strogonov
  • I. G. Kiryan
Chapter
Part of the Advances in Agricultural Biotechnology book series (AABI, volume 18)

Abstract

The polyamine titers in three cell lines of Nicotiana sylvestris were compared: Type 1, rapidly adapting to NaCl: Type 2, constantly resistant to NaCl; Type 3, a salt-sensitive wild strain. During short-term cultivation in MS medium in the presence of 170mM NaCl (1 passage, 14 d) the changes in polyamine titer in cell suspensions of type 1 (in a slightly adapted state) and non-adapted wild strain (type 3) showed a considerable increase in spermidine and spermine and a decrease in putrescine. After prolonged adaptation to NaCl (20 passages) the putrescine content in the cells of type 1 and of type 2 was increased at the expense of the polyamines. This suggests that the pattern of polyamine titer varies under short- and long-term adaptation to NaCl. The inverse ratio between growth processes and changes in polyamine and proline level indicates that polyamines fulfil primarily a protective and osmorepulatory function in plant cells under NaCl sttess.

Key words

Salt-resistant cell lines polyamines proline growth 

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Copyright information

© Martinus Nijhoff/Dr W. Junk Publishers, Dordrecht 1985

Authors and Affiliations

  • N. I. Shevyakova
    • 1
  • B. P. Strogonov
    • 1
  • I. G. Kiryan
    • 1
  1. 1.Timiriazev Institute of Plant Physiology USSR Academy of SciencesMoscowUSSR

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