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植物物种中ABA信号的核心组成部分的全基因组识别,植物遗传学,结构和功能演变:重点关注大米

Yanhong Lan^1,2, Yao Song², Mengjia Liu^1,2

¹Vegetable Germplasm Innovation and Variety Improvement Key Laboratory of Sichuan Province, Horticulture Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, 610066, China.

|July 22, 2024

概括

在20种植物物种中分析了酸 (ABA) 核心基因,揭示了进化见解. 像PP2C和SnRK2这样的关键组件对于ABA信号和植物应激反应至关重要.

科学领域:

植物生物学植物生物学
进化生物学进化生物学
基因组学就是基因组学.

背景情况:

酸 (ABA) 对植物生长,发育和应激反应至关重要.
ABA信号依赖于核心组件:PYR/PYL/RCAR,PP2C,以及SnRK2. 这三种组件.
关于不同植物物种中这些ABA成分的进化结构和功能差异的研究有限.

研究的目的:

在20种植物物种中调查ABA核心基因的遗传学,基因结构,同质性和重复演变.
描述在非生物压力下大米中特定的ABA信号元件的作用.
提供关于植物ABA信号的演变和整合的见解.

主要方法:

来自20种植物物种的642个ABA核心成分基因的全基因组分析.
遗传学分析,基因结构,同质性和重复事件分析.
在各种压力条件下对大米和阿拉比多普西斯的基因表达分析.

主要成果:

在20个物种中确定了642个ABA核心基因,分为三个子家族,具有保存模式.
分段,并列和全基因组重复 (WGD) 是基因进化的关键驱动因素,扩大了PYR/PYL/RCAR和PP2C亚家族.
PP2C_1和PP2C_2在米ABA信号传递中与SnRK2_1发生关键相互作用,调解对非生物应激的反应.

结论:

ABA核心成分基因表现出保存的进化模式和植物物种之间的功能差异化.
基因重复事件,特别是WGD,对ABA信号通路的扩展和适应作出了重大贡献.
特定的PP2C和SnRK2基因在ABA介导的应激反应中起着关键作用,为农业应用提供了潜力.

关键词:

同行性分析对线性分析的分析.差异化差异化进化进化进化进化进化进化进化扩张扩张扩张人类遗传学分析整个基因组的复制.

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