一种植物的lysin动因受体类激酶在菌根中起着祖先的作用
Eve Teyssier1, Sabine Grat1, David Landry2
1Laboratoire de Recherche en Sciences Végétales, Université de Toulouse, CNRS, Institut National Polytechnique Toulouse, Castanet-Tolosan 31320, France.
概括
植物中的状菌根 (AM) 共生是古老的,由的信号发起,由Lysin Motif受体类似基因酶 (LysM-RLKs) 感知. 这项研究证实了LysM-RLKs是AM建立和信号感知的祖先.
科学领域:
- 植物生物学 植物生物学
- 菌类学 菌类学是指菌类学.
- 进化生物学是进化的生物学.
背景情况:
- 树枝状菌根 (AM) 是植物和Glomeromycota真菌之间的关键共生,对植物陆地生命至关重要.
- 假设素基因受体类似基因酶 (LysM-RLKs) 能够感知的信号,如基和脂基糖 (COs/LCOs),从而在开花植物中启动AM.
研究的目的:
- 为了研究 LysM-RLKs 在 AM 建立和 CO/LCO 感知中的保存作用,使用肝草 *Marchantia paleacea*.
- 确定植物通过lysm-RLKs感知真菌信号是否是AM起源和建立的先决条件.
主要方法:
- 反向遗传学分析LysM-RLKs在Marchantia paleacea*中的功能.
- 生物化学结合试验和细胞质变异记录.
- 全基因组转录组学以评估细胞对真菌信号的反应.
主要成果:
- 发现单一的LysM-RLK,MpaLYKa,对*M. paleacea*的AM形成至关重要,支持共生中的祖先作用.
- 另一种LysM-RLK,MpaLYR,是对COs/LCOs的反应所必需的,但对AM形成不必要.
- 这项研究表明,通过LysM-RLK介导的对共生体的感知是陆地植物的古老特征.
结论:
- 通过LysM-RLK介导的树状菌根真菌的感知是陆地植物中保存的古老特征.
- 这些发现表明,在共生中涉及的AM真菌存在额外的,未经表征的信号.
- 这项研究提供了关于植物-真菌共生的进化起源的见解.
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