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皮状原蛋白调解了捕捉真菌和线虫之间的跨王国捕食者-猎物相互作用
Han-Wen Chang1,2, Hung-Che Lin2, Ching-Ting Yang2,3
1Molecular and Cell Biology, Taiwan International Graduate Program, Academia Sinica and Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan.
PLoS biology
|July 1, 2025
概括
核激素受体NHR-66通过控制皮质原体来调节真菌-细菌粘附. 失去NHR-66可以保护线虫免受真菌陷的影响,但会增加压力敏感性.
科学领域:
- 生态生态学 生态生态学
- 进化生物学 进化生物学
- 分子生物学分子生物学
背景情况:
- 粘合性相互作用对于捕食者-猎物动态和进化至关重要.
- 像Arthrobotrys oligospora这样的阴虫捕菌使用粘合网来捕捉猎物.
- 了解这些相互作用揭示了关键的生态和进化机制.
研究的目的:
- 为了研究Caenorhabditis elegans和Arthrobotrys oligospora之间的粘附的分子基础.
- 为了确定C. elegans中介于对真菌陷的抵抗力的遗传因素.
- 阐明结构蛋白在捕食者与猎物的相互作用中的作用.
主要方法:
- 在C. elegans中转发基因选,以识别逃生突变物.
- 核激素受体NHR-66.6的识别和表征.
- 在野生型和突变性线虫中分析皮质原蛋白基因表达.
- 自然C. elegans种群的序列分析.
- 在低度应激下对nhr-66突变表型的评估.
主要成果:
- 核激素受体NHR-66被确定为真菌 - 遗传虫粘附的关键调节器.
- nhr-66功能丧失突变体表现出对真菌陷的抵抗力.
- 这种抗性是由于许多皮质原基因的下调.
- 在突变者中恢复原体表达消除了抵抗性表型.
- 自然的C. elegans种群缺乏明显的nhr-66功能丧失变体,表明了平衡选择.
- nhr-66突变体对低体应激和皮质脆弱性的敏感性增加.
结论:
- 由NHR-66调节的皮质原体,对于真菌 - 阴茎粘是必不可少的.
- 这些发现突出了捕食者抵抗力和生理强度之间的权衡.
- 这项研究揭示了捕食者与猎物之间的进化军备竞赛的分子基础.
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