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WOX11-OsPRX130模块通过保持大米根中的ROS恒常性来赋予大米干旱耐受性

Mingfang Tan¹, Yijie Wang¹, Yu Zhao²

¹National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, 430070, China.

Rice (New York, N.Y.)

|June 19, 2025

概括

米植物使用WOX11来管理活性氧物种 (ROS) 并促进冠根生长,增强干旱耐受性. 这项研究揭示了WOX11如何调节OsPRX130以改善水资源稀缺的情况下的根部发育.

科学领域:

植物生物学植物生物学
分子遗传学分子遗传学
农业科学农业科学

背景情况:

植物对干旱压力的弹性对于作物产量至关重要.
根系结构和活性氧物种 (ROS) 水平是干旱耐受性的关键因素.
WOX11是已知的大米冠根 (CR) 发育和根氧化还原代谢的调节者.

研究的目的:

研究WOX11在干旱压力下的根中调节ROS恒温的作用.
阐明WOX11影响CR发展和干旱适应的机制.
确定涉及干旱耐受性的WOX11下游目标.

主要方法:

在干旱压力下对OsPRX130的基因表达分析.
对野生型和淘汰型突变种的CR生长和ROS水平的分析.
使用ChIP-qPCR来确认WOX11与OsPRX130促进体的直接结合.

主要成果:

WOX11直接与过氧化酶基因OsPRX130.0.的促进体结合.
OsPRX130表达是由干旱压力引起的,对CR生长至关重要.
OsPRX130的淘汰会降低ROS水平,抑制CR生长,并影响干旱耐受性.
通过WOX11调节OsPRX130,通过促进CR的发展来增强干旱耐受性.

结论:

WOX11通过调节ROS稳态通过OsPRX130.0.通过调节CR生长来增强大米的干旱耐受性.
这项研究揭示了一种新的干旱适应机制,涉及WOX11和III类过氧化酶基因.
结果为改良的根系增强干旱适应能力的育种作物品种提供了洞察力.

关键词:

这就是OsPRX13030的原因.皇冠根皇冠根皇冠根皇冠根耐旱耐受性耐旱耐受性耐旱耐受性这就是ROSOS ROS.大米大米大米大米大米在WOX11上使用.

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