ABA对种子发育的调节

被引：26

作者：

宋松泉

段咏新

傅家瑞

机构：

[1] 中山大学生命科学学院!广州，

来源：

种子 | 1997年 / 05期

关键词：

种子发育; 离体胚培养; ABA突变体; 脱水耐性; 基因表达; ABA;

D O I：

10.16590/j.cnki.1001-4705.1997.05.039

中图分类号：

Q945 [植物生理学];

学科分类号：

0903 ;

摘要：

种子中ABA的含量随发育进程而变化，在发育开始到成熟的大约1／3～1／2的时期达到最大值。ABA促进胚的发育，抑制离体胚的过早萌发．增加贮藏物的积累特别是贮藏蛋白的合成，诱导产生与脱水耐性有关的LEA蛋白及其mRNA、ABA突变体有ABA缺乏和ABA不敏感两种类型，外源ABA能够逆转ABA突变体的生理反应。Em启动子的ABA反应元件位于-168至-106之间。

引用

页码：36 / 42

页数：7

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