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在ZmEREB179中的遗传变异与玉米的浸水耐受性有关

Kun Liang¹, Chenxu Zhao¹, Jing Wang¹

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

Journal of genetics and genomics = Yi chuan xue bao

|April 18, 2024

概括

一个新发现的基因,ZmEREB179,作为玉米浸水耐受性的负调节者. 其促进区域的变异与改善的浸水抵抗性有关,为作物繁殖提供了潜力.

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:

玉米 (Zea mays) 受到水浸压的显著影响,影响作物的产量和质量.
玉米水浸耐受性的基础分子机制尚不清楚.
乙烯反应因子 (ERF) 在植物应激反应中起着至关重要的作用.

研究的目的:

识别和表征涉及到玉米浸水耐受性的基因.
为了阐明ZmEREB179在应对水浸压力的调节作用.
探索ZmEREB179中遗传变异的潜力,用于培育耐水浸的玉米.

主要方法:

鉴定了一种可诱导浸水和乙烯的基因,ZmEREB179,编码一个ERF.
在玉米中对ZmEREB179的过度表达和淘汰突变分析.
转录组分析以确定ZmEREB179.9的下游目标.
在玉米杂交线和隔离种群中进行促销者分析和关联研究.

主要成果:

ZmEREB179作为水浸耐受性的负调节剂;其过度表达增加了敏感性,而淘汰突变体显示了增强的耐受性.
ZmEREB179直接抑制另一种与压力相关的基因ZmEREB180.0的表达.
在ZmEREB179促进体 (Hap2) 中的遗传变异与玉米的防水阻力密切相关.

结论:

ZmEREB179是玉米浸水反应通路中的关键负调节剂.
涉及ERF基因的转录级联对植物浸水耐受性至关重要.
ZmEREB179促进体变异 (Hap2) 代表了开发耐水浸型玉米品种的宝贵遗传资源.

关键词:

乙烯反应因子的乙烯反应因子.玉米玉米玉米是一种自然变化的自然变化.转录法规转录法规在水中浸泡,使水淹没.

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