水稻镉胁迫应答分子机制研究进展

被引：54

作者：

鄂志国 ^{[1
]}

张玉屏 ^{[1
]}

王磊 ^{[1
,2
]}

机构：

[1] 中国水稻研究所

[2] 水稻生物学国家重点实验室

来源：

中国水稻科学 | 2013年 / 27卷 / 05期

关键词：

水稻; 镉胁迫; 转运蛋白;

D O I：

暂无

中图分类号：

S511 [稻];

学科分类号：

090104 [作物信息科学与技术];

摘要：

镉是对环境毒性最大的重金属元素之一,对水稻等粮食作物的安全生产构成严重威胁。研究水稻镉积累的危害及其应答机制,具有重要的现实意义。镉胁迫下,水稻根系生长受阻、光合作用受抑制,但不同品种对镉的耐受性差异显著。基于品种间镉含量的遗传差异,在水稻7条染色体上均定位到与镉积累相关的QTL。此外,多种镉离子转运蛋白,如P1B型ATP酶、天然抗性相关巨噬细胞蛋白、阳离子扩散促进因子和ATP结合框转运蛋白等,被成功克隆并证实参与镉胁迫应答。有效利用这些抗性QTL或基因,是培育耐镉品种的关键。

引用

页码：539 / 544

页数：6

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