在组装一个专门的昆虫-微生物共生系统时,具有强烈的优先效应
Jason Z Chen1, Anthony Junker1, Iris Zheng1
1Department of Biology, Emory University, Atlanta, Georgia, USA.
Applied and environmental microbiology
|September 18, 2024
概括
虫中的微生物群落表现出强烈的优先效应,即第一个殖民细菌防止后来的到来,即使有空间. 这表明,寄居微生物操纵宿主环境以保持其主导地位.
科学领域:
- 微生物生态学 微生物生态学
- 交生研究 交生研究
- 昆虫与微生物的相互作用
背景情况:
- 与宿主相关的微生物群落对于生态系统过程和健康至关重要.
- 社区集会受到微生物殖民的选择和顺序的影响 (优先效应).
- 了解这些动态是设计微生物组以造福社会的关键.
研究的目的:
- 为了研究虫 (Anasa tristis) 通过Caballeronia细菌共生体的殖民化中的优先效应.
- 为了确定细菌菌株引入的顺序是否会影响宿主社区内的组成.
- 阐明在专业的共生中微生物排除背后的机制.
主要方法:
- 细菌菌株的连续引入到单个虫中.
- 使用竞争和同源性 (功能相同) 的细菌菌株.
- 用抗生素治疗,以减少最初的殖民者种群,并评估二次殖民.
主要成果:
- 已建立的细菌群体对新菌株的入侵具有很高的抵抗力,无论菌株的身份或竞争性相互作用如何.
- 即使在抗生素治疗后,二次共生体殖民成功也减少了,这表明了超出简单空间限制的机制.
- 证据表明,居住共生体积极操纵宿主环境,可能通过组织重塑.
结论:
- 优先效应是结构化虫微生物群的一个主要因素.
- 细菌共生体可以通过修改宿主环境来排除后续的殖民者.
- 这些发现对理解和潜在的工程宿主-微生物共生有影响.
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