主体的局部内置复制是Phytomyxea-主体相互作用期间的保存过程
Michaela Hittorf1, Andrea Garvetto1, Marianne Magauer2
1Department of Microbiology, Universität Innsbruck, Innsbruck, Austria.
Frontiers in microbiology
|February 20, 2025
概括
像Phytomyxea这样的致病生物在植物和藻类中都会诱导endoreduplication,一种经过修改的细胞循环. 这项研究证实了棕藻和植物中的这一现象,揭示了参与细胞周期切换的关键分子参与者.
科学领域:
- 细胞生物学 细胞生物学
- 植物病理学 植物病理学
- 海洋生物学 海洋生物学
背景情况:
- 末代复制是一种细胞循环修饰,DNA在没有细胞分裂的情况下复制,在各种生物体中观察到.
- 生物变性病原体通常会诱导宿主植物的Endoreduplication,以增强资源获取.
研究的目的:
- 为了研究由Rhizaria生物体诱导的Endoreduplication,特别是*Maullinia spp. * 在棕色藻类中和 * 在植物中.
- 探索病原体诱导的基因复制在遗传学上遥远的宿主中的分子机制.
主要方法:
- 使用光 *in situ* 杂交 (FISH) 与核面积测量相结合.
- 分析了来自受感染宿主生物的RNA测序 (RNA-seq) 数据集.
主要成果:
- 已证实 *Plasmodiophora brassicae* 在受感染的植物中诱导内置复制.
- 首次证明了病原体诱导的色藻类感染*Maullinia ectocarpii*和*Maullinia braseltonii*的内置复制.
- 在RNA-seq数据中确定了上调细胞循环调节剂 (CCS52A1/B,CCS52,WEE1),这表明它们在细胞循环切换中的作用.
结论:
- 病原体诱导的Endoreduplication是Phytomyxea在多种宿主之间的宿主相互作用中保存的机制.
- 这些发现扩大了对Phytomyxea操纵宿主细胞周期的策略的理解.
- 特定细胞循环蛋白质的升级指向了向内循环过渡的关键分子参与者.
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