一氧化氮参与调节盐胁迫诱导的玉米幼苗脱落酸积累

被引：24

作者：

陈康

李杰

唐静

赵方贵

刘新

机构：

[1] 莱阳农学院生命科学学院

来源：

植物生理与分子生物学学报 | 2006年 / 05期

关键词：

一氧化氮; 脱落酸; 盐胁迫; 玉米幼苗;

D O I：

暂无

中图分类号：

S513 [玉米（玉蜀黍）]; Q945.78 [协迫生理学];

学科分类号：

0901 ; 0903 ;

摘要：

以三叶一心期的玉米幼苗为实验材料,研究了盐胁迫下玉米幼苗根尖和叶片中一氧化氮(NO)和脱落酸(ABA)积累之间的关系。结果表明,盐胁迫下玉米幼苗NO和ABA的含量均增加,用NO供体硝普钠(sodiumnitroprusside,SNP)处理时,ABA含量亦增加,且累积的时间较盐胁迫下早。用NO合成的抑制剂L-NAME(Nω-nitro-L-argininemethylesterhydrochloride)和NaN3处理时,可减弱盐胁迫诱导的ABA含量的增加,用NO清除剂cPTIO处理时,这种盐胁迫诱导的ABA增加减少。推测盐胁迫下产生的NO参与调节ABA的积累及逆境下植物的防御反应。

引用

页码：577 / 582

页数：6

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