POLYAMINES IN VARIOUS RICE (ORYZA-SATIVA) GENOTYPES WITH RESPECT TO SODIUM-CHLORIDE SALINITY
POLYAMINES IN VARIOUS RICE (ORYZA-SATIVA) GENOTYPES WITH RESPECT TO SODIUM-CHLORIDE SALINITY
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DOI：
10.1111/j.1399-3054.1991.tb02949.x
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发表时间：
1991-08-01
影响因子：
6.4
通讯作者：
GHOSH, B
中科院分区：
文献类型：
--
作者：
BASU, R;GHOSH, B
研究了不同基因型水稻对盐胁迫的生理响应。品种CSR-1和Dular发芽以及在不同的NaCl制度相比，cvs Rupsail，阿萨姆Getu和M-1-48。在100 mM NaCl，最低的发芽率观察到在CV。M-1-48在非胁迫条件下，Cvs CSR-1和Dular在保持胚芽鞘和根中高浓度的多胺以及精氨酸脱羧酶（EC 4.1.1.19）活性方面相对有效。二胺氧化酶（EC 1.4.3.6）和多胺氧化酶（EC 1.4.3.4）的活性均以cv. CSR-1。多胺含量没有显着变化时，黄瓜幼苗。将CSR-1暴露于100 mM NaCl。然而，在CV。观察到M-1-48增强精氨酸脱羧酶活性并伴随多胺的积累。渗漏的代谢产物和Na+和Cl-的水平的变化是突出的CV。M-1-48在盐水条件下。结果表明，水稻基因型多胺和盐胁迫诱导的反应之间的相关性。
Physiological responses of various rice genotypes were studied in relation to salt (NaCl) stress. Cultivars CSR-1 and Dular germinated well in different NaCl regimes compared to cvs Rupsail, Assam Getu and M-1-48. At 100 mM NaCl, the lowest germination was observed in cv. M-1-48. Cvs CSR-1 and Dular were relatively effective in maintaining high concentrations of polyamines as well as arginine decarboxylase (EC 4.1.1.19) activity in coleoptiles and roots in a non-stressed condition. The activities of two biodegradative enzymes, diamine oxidase (EC 1.4.3.6) and polyamine oxidase (EC 1.4.3.4), were lowest in cv. CSR-1. The polyamine content was not significantly altered when seedlings of cv. CSR-1 were exposed to 100 mM NaCl. However, in cv. M-1-48 enhancement of arginine decarboxylase activity with concomitant accumulation of polyamines was observed. Leakage of metabolites and changes in the levels of Na+ and Cl- were prominent in cv. M-1-48 under saline conditions. The results suggest a correlation between polyamine and salt stress-induced responses in rice genotypes.