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一个CCR4-NOT复合元件GmNOT4-1在调节大豆结节的作用

Jiangtao Zheng¹, Lili Sun¹, Dongmei Wang¹

¹College of Agronomy, Shanxi Agricultural University, Taigu, China.

Frontiers in plant science

|June 21, 2023

概括

大豆结节是由GmNOT4-1调节的,这是CCR4-NOT复合体中的一个基因. 操纵GmNOT4-1会影响结节数和结节信号通路,从而提供有关豆类共生的见解.

科学领域:

植物分子生物学植物分子生物学
植物与微生物的相互作用
遗传学和基因组学遗传学和基因组学

背景情况:

豆类-生菌共生对于固定至关重要,它依赖于分子通信来形成结节.
CCR4-NOT复合体调节基因表达,但其在豆类-树菌相互作用中的作用尚不清楚.

研究的目的:

研究CCR4-NOT复合体,特别是NOT4家族成员在大豆结节中的功能.
阐明GmNOT4-1在共生固定过程中的作用.

主要方法:

在大豆中识别和生物信息分析了七个NOT4家族成员.
在响应Rhizobium感染和结节时,NOT4基因的表达概况.
使用过度表达,RNAi和CRISPR/Cas9基因编辑对GmNOT4-1的功能分析.

主要成果:

鉴定了七个大豆NOT4基因,并将它们分类为具有保留动机的三个子组.
大多数大豆NOT4基因是由Rhizobium诱导的,并且在结节中高度表达,这表明在共生中发挥了作用.
改变GmNOT4-1表达 (过度表达,RNAi,CRISPR/Cas9) 抑制了大豆结节的形成.
在Nod因子信号通路中,GmNOT4-1表达改变了抑制的关键基因.

结论:

大豆NOT4基因,特别是GmNOT4-1,在调节共生结节方面发挥着重要作用.
GmNOT4-1是Nod因子信号通路的关键调节者,对于豆类共生至关重要.
这项研究为CCR4-NOT家族在豆类-微生物相互作用中的功能提供了新的见解.

关键词:

这就是CRISPR/Cas9的作用.Ccr4-不复杂的复合体豆类共生固化的植物节点因子的信号传递.根结节 (共生) 是一个根结节.

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