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RHW1-ZCN4调节途径赋予了玉米叶宽度的自然变化

Aiai Xia¹, Leiming Zheng¹, Zi Wang¹

¹MOE Key Laboratory of Crop Heterosis and Utilization, National Maize Improvement Center of China, China Agricultural University, Beijing, 100094, China.

The New phytologist

|July 5, 2023

概括

在RHW1中新发现的基因变异控制了玉米叶的宽度. 这种与适应相关的遗传变异会影响核的产量和质量.

科学领域:

植物遗传学植物遗传学
玉米生物学玉米生物学
农业科学农业科学

背景情况:

玉米叶的发育对于核的产量和质量至关重要.
控制叶宽度的遗传因素在很大程度上是未知的.
之前的研究将RHW1中的单核酸多态性与叶宽度变化联系起来.

研究的目的:

为了研究玉米叶宽度的遗传基础.
为了阐明皮叶宽度调节器 (RHW1) 基因功能.
了解RHW1在玉米适应中的作用.

主要方法:

全基因组关联研究 (GWAS) 分析.
在RHW1.1中识别和描述一个18bp插入/删除 (InDel) 变体.
分析RHW1蛋白的丰度及其对细胞增殖的影响.
调查RHW1和ZCN之间的监管关系4.

主要成果:

在RHW1 3'未翻译区域中的多态18-bp InDel会影响蛋白质丰富度和叶宽度.
RHW1作为转录抑制剂,调节细胞增殖.
RHW1积极调节ZCN4表达,这是耳朵发育的关键因素.
RHW1 InDel变种正在选择中,并与适应不同气候有关.

结论:

RHW1-ZCN4通路调节了玉米早期的叶发育.
在RHW1的遗传变异有助于叶宽度的多样性和气候适应.
了解RHW1功能可以为提高玉米产量和质量的战略提供信息.

关键词:

在GWAS中,GWAS就是GWAS.这就是RHW1的原因.在 ZCN4 中,皮叶子叶子玉米玉米玉米是一种

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