[NaCl胁迫下野生大豆和栽培大豆幼苗中多胺水平的变化]

[Changes of polyamines level in Glycine soja and Glycine max seedlings under NaCl stress].

作者信息

Yu Bingjun, Ji Xiaojia, Liu Jun, Liu Youliang

机构信息

College of Life Science, National Center of Soybean Improvement, Agronomy Ministry of China, Nanjing Agricultural University, Nanjing 210095, China.

出版信息

Ying Yong Sheng Tai Xue Bao. 2004 Jul;15(7):1223-6.

PMID:15506103

Abstract

With internationally common-used Glycine max (the salt-tolerant Lee68) and Glycine soja (the salt-sensitive N23232) as reference, this paper studied the polyamines (PAs) contents and polyamine oxidase (PAO) activities in the highly salt-tolerant BB52 (Glycine soja) seedlings, which showed that under 150mmol x L(-1) NaCl stress for 2d, the decrease of Put and Spd contents was more significant, but that of Spd content was less significant in roots of BB52 than in those of Lee68 and N23232. For leaves, the decrease of Put and increase of Spd contents were markedly observed in BB52. The ascent of (Spm + Spd)/Put ratios and descent of Put/PAs ratios showed a positive relation to their salt tolerance. The PAO activity in roots and leaves was all increased, and most obvious in N23232. The relationship between PAs levels in BB52 and its salt tolerance was also discussed.

摘要

以国际常用的耐盐品种大豆（Glycine max）Lee68和盐敏感品种野生大豆（Glycine soja）N23232为参照，研究了高度耐盐的野生大豆BB52幼苗中多胺（PAs）含量和多胺氧化酶（PAO）活性。结果表明，在150mmol·L(-1) NaCl胁迫2d后，BB52根系中腐胺（Put）和亚精胺（Spd）含量下降幅度比Lee68和N23232更显著，但Spd含量下降幅度小于Lee68和N23232。对于叶片，BB52中明显观察到Put含量下降和Spd含量增加。（精胺（Spm）+ Spd）/Put比值上升和Put/PAs比值下降与其耐盐性呈正相关。根和叶中的PAO活性均增加，在N23232中最为明显。还讨论了BB52中PAs水平与其耐盐性之间的关系。