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.
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© 1985 Martinus Nijhoff/Dr W. Junk Publishers, Dordrecht
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Shevyakova, N.I., Strogonov, B.P., Kiryan, I.G. (1985). Metabolism of polyamines in NaCl-resistant cell lines from Nicotiana sylvestris . In: Galston, A.W., Smith, T.A. (eds) Polyamines in Plants. Advances in Agricultural Biotechnology, vol 18. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-5171-6_14
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DOI: https://doi.org/10.1007/978-94-009-5171-6_14
Publisher Name: Springer, Dordrecht
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