宿主微生物组/全生物体的进化方式取决于微生物组是否影响宿主寿命或生育能力
Alexandra L Brown1, Britt Koskella1, Mike Boots1,2
1Department of Integrative Biology, University of California, Berkeley, CA, United States.
Journal of evolutionary biology
|November 8, 2024
概括
主体微生物群的共同进化取决于共生体的益处和传播. 提高生育能力的共生体需要从父母传给后代,而增加寿命的共生体则不需要,这影响了全生物体的进化.
科学领域:
- 微生物生态学 微生物生态学
- 进化生物学是进化的生物学.
- 理论生物学的理论生物学.
背景情况:
- 微生物组显著影响宿主生理和健康状况.
- 了解宿主微生物群的共同进化对于宿主和微生物的益处至关重要.
- 共生者传播的模式和所提供的益处类型会影响共进化的结果.
研究的目的:
- 调查宿主和共生体进化是如何由共生体的好处 (寿命与繁殖) 和传播模式塑造的.
- 模拟有益微生物进化和受宿主青的条件.
- 探索横向和伪直向传播在宿主微生物群共同进化的作用.
主要方法:
- 使用自适应动态建模来模拟宿主和共生动物的相互作用.
- 该模型考虑了两种传播策略:稳定水平释放和在繁殖时释放 (伪外形).
- 该研究分析了共生生物为宿主寿命或生育能力提供好处的场景,以及这些好处对共生生物造成成本的场景.
主要成果:
- 受益于宿主生育能力的共生体的进化需要假外形 (父母到后代) 传播.
- 受益于宿主寿命的共生生物可以在没有伪光学传播的情况下进化.
- 由于竞争加剧,当利益昂贵时,伪外观传输的中间水平是选择有益的共生体的最佳选择.
结论:
- 共生体提供的健康益处类型和传播方式是宿主微生物群共同进化的关键驱动因素.
- 亲子传播对于促进宿主生育能力的共生体进化至关重要.
- 如果共生体在繁殖时释放增加了竞争,那么有利于有益的共生体的宿主特征可能会消失,这凸显了全生物体进化的复杂性.
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