氯化钠胁迫下野生和栽培大豆幼苗体内的多胺水平变化

摘要/Abstract

摘要： 以通用的较耐盐的栽培大豆Lee68品种和对盐敏感的野生大豆N23232种群为参照,研究了盐胁迫下耐盐野生大豆BB52种群幼苗体内多胺(PAs)组分、含量及多胺氧化酶(PAO)活性的变化.结果表明,盐胁迫下BB52幼苗根PAs中Put和Spm含量下降较Lee68和N23232显著,但Spd含量下降较少.BB52叶片PAs中Put含量下降,Spd上升.(Spd+Spm)/Put值增加和Put/PAs值降低幅度与耐盐性呈正相关趋势.盐胁迫下,各材料根和叶中PAO活性上升,N23232上升最明显.探讨了多胺水平与BB52耐盐性的关系.

关键词: 野生大豆, 栽培大豆, 盐胁迫, 多胺(PAs), 多胺氧化酶(PAO)活性, 耐盐性

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稬^-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.

Key words: Glycine soja, Glycine max, Salt stress, Polyamines(PAs), Polyamine oxidase(PAO) activity, Salt tolerance

中图分类号:

Q945

於丙军, 吉晓佳, 刘俊, 刘友良. 氯化钠胁迫下野生和栽培大豆幼苗体内的多胺水平变化[J]. 应用生态学报, 2004, (7): 1223-1226.

YU Bingjun, JI Xiaojia, LIU Jun, LIU Youliang. Changes of polyamines level in Glycine soja and Glycine max seedlings under NaCl stress[J]. Chinese Journal of Applied Ecology, 2004, (7): 1223-1226.

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