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一个系统的审查和CMS基因在作物中的起源的发展视角

Xuemei Zhang^1,2, Zhengpin Ding², Hongbo Lou²

¹State Key Laboratory of Conservation and Utilization of Bio-Resources in Yunnan, The Key Laboratory of Medicinal Plant Biology of Yunnan Province, Yunnan Agricultural University, Kunming 650201, China.

International journal of molecular sciences

|August 10, 2024

概括

植物中的细胞质男性不育性 (CMS) 是由线粒体基因组 (线粒体基因组) 嵌合基因产生的. 这篇评论假设CMS基因起源于远程杂交种子发芽期间的线粒体DNA重组.

科学领域:

植物遗传学和分子生物学
线粒体基因组学的基因组学
生殖生物学生殖生物学

背景情况:

细胞质男性不育性 (CMS) 对于混合种子生产至关重要,其来源于核-细胞质不兼容性,通常涉及机体线粒体基因.
线粒体基因组 (线粒体基因组) 呈现出序列保存和重组驱动的模拟结构,但这些模拟基因的起源仍然不清楚.
线粒体和线粒体在植物生命周期期间发生动态变化,特别是在种子发芽期间.

研究的目的:

批判性地审查关于植物细胞质男性不育 (CMS) 机制的研究.
阐明导致CMS的仿真线粒体基因的起源和外观.
为CMS相关的化学基因的起源提出一个假设.

主要方法:

关于植物细胞质男性不育,线粒体基因组学和杂交的现有文献的综述.
对线粒体DNA (mtDNA) 进化,重组和遗传模式的分析.
核基因,如MSH1在调节线粒基因组稳定性中的作用的检查.

主要成果:

远程混合化是产生新型CMS源的首要驱动力.
分子基因组的稳定性受到核因素的影响;像MSH1这样的基因的抑制可以诱导mtDNA重组和CMS基因的形成.
显著的mtDNA重组发生在遥远的杂交物和体质/网络杂交物中.

结论:

这项研究假设,导致CMS的嵌合体线粒体基因起源于远距离杂交的种子在发芽期间的mtDNA重组.
这种重组事件被认为是解决来自全原核基因组的核细胞体不相容性的机制.
了解这些机制对于在作物中推进杂交育种策略至关重要.

关键词:

奇默的线粒体基因基因线粒体基因远距离的杂交方式.线粒体的融合和裂变.mtDNA重组组合的方法原始CMS源代码是CMS的原始源代码.种子的发芽种子的发芽

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