植物信号传递的RHO是在菌体进化早期确立的
1Department of Biology, University of Oxford, South Parks Road, Oxford OX1 3RB, UK; Gregor Mendel Institute of Molecular Plant Biology (GMI), Austrian Academy of Sciences, Vienna BioCenter (VBC), Dr. Bohr-Gasse 3, Vienna 1030, Austria.
Current biology : CB
|December 1, 2023
概括
植物 (ROP) 信号的RHO在早期链状细胞的演化与从单细胞到多细胞生命的过渡相吻合. 这种信号通路可能促进了早期陆地植物祖先的多细胞性发展.
科学领域:
- 进化发育生物学 进化发育生物学
- 植物进化生物学 植物进化生物学
- 分子进化的分子进化.
背景情况:
- 在陆地植物的藻类祖先中,从单细胞到多细胞的身体计划的过渡是一个关键的进化事件.
- 植物 (ROP) 信号的RHO对于陆地植物的形态发生至关重要,它调节细胞生长和分裂.
- 在陆地植物多细胞化之前,链状植物系内的ROP信号的进化起源以前是未知的.
研究的目的:
- 为了确定ROP信号何时起源于链状植物系内.
- 研究ROP信号在早期陆地植物祖先单细胞转多细胞转变中的潜在作用.
主要方法:
- 对跨链菌株系的RHO GTPase家族基因进行了系遗传学分析.
- 进行比较基因组分析,追踪ROP信号组件的进化历史.
- 生物信息学方法推断ROP亚系起源的时间相对于关键的血统分歧.
主要成果:
- ROP信号在链状植物谱系的早期建立,在Chlorokybophyceae/Mesostigmatophyceae分歧之后,但在Klebsormidiophyceae分歧之前.
- 这种ROP信号起源的进化窗口与链球菌中单细胞到多细胞过渡的拟议时间一致.
- ROP信号传递是RHO GTPase的植物特异性亚家族,起源于早期的菌株.
结论:
- 在早期的菌株中出现了ROP信号,与关键的进化过渡到多细胞性相吻合.
- 在这个过渡期间,ROP信号的演变可能为形态发生的空间调节提供了必要的机制.
- ROP信号可能在早期菌株和陆地植物的形态进化中发挥了重要作用.
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