NaCl胁迫下玉米幼苗中一氧化氮与茉莉酸积累的关系

被引：15

作者：

李杰

陈康

唐静

赵方贵

刘新

机构：

[1] 青岛农业大学生命科学学院

来源：

西北植物学报 | 2008年 / 08期

关键词：

一氧化氮; 茉莉酸; 脂氧合酶; NaCl胁迫; 玉米幼苗;

D O I：

暂无

中图分类号：

S513 [玉米（玉蜀黍）];

学科分类号：

0901 ;

摘要：

以三叶一心期的玉米幼苗为材料,研究了NaCl胁迫下玉米幼苗根尖和叶片中一氧化氮(NO)和茉莉酸(JA)积累之间的关系.结果表明:NaCl胁迫下玉米幼苗根尖和叶片中NO和JA的含量均增加,且NO积累的时间早于JA;根尖中脂氧合酶(LOX)活性逐渐降低,而叶片中LOX活性显著升高.硝普钠(SNP,NO供体)处理使幼苗的JA含量和LOX活性亦增加;用NO清除剂cPTIO及NO合成的抑制剂L-NAME、NaN3处理幼苗时,可抑制NaCl胁迫诱导的JA积累以及叶片中LOX活性的增加.可见,玉米幼苗在盐胁迫下爆发的NO可能通过调控LOX活性来调节其JA的积累.

引用

页码：1629 / 1636

页数：8

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