棉花学报   Cotton Science      2005,17(5):309-313

 

棉花盐害与耐盐性的生理和分子机理研究进展
辛承松, 董合忠, 唐 薇, 温四民
(山东棉花研究中心,济南 250100)

摘要:盐胁迫通过离子毒害、营养失衡和渗透胁迫,引起棉株体生理生化代谢失调,进而影响棉花的生长发育和产量、品质。但棉株体可以通过膜脂过氧化清除系统活性的提高维持质膜的相对稳定,通过合成和积累脯氨酸、葡萄糖和氨基酸等小分子有机物质缓解渗透胁迫,通过调节盐离子在不同器官、组织或细胞内的区域(隔)化分布减轻离子毒害,而表现出较强的耐盐性。Na+/H+反向转运蛋白和LEA蛋白(晚期胚胎发生富集蛋白)等的合成及其相关基因的表达可能参与甚至调控了棉株体防御或忍耐盐胁迫的过程。
关键词:棉花;盐害;耐盐性;生理和分子机理
中图分类号:S562      文献标识码:A
文章编号:1002-7807(2005)05-0309-05

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