气候变化领域集成服务门户(CCPortal): On the evolutionary origins of host-microbe associations

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DOI	10.1073/pnas.2016487118
	On the evolutionary origins of host-microbe associations
	Sieber M.; Traulsen A.; Schulenburg H.; Douglas A.E.
发表日期	2021
ISSN	00278424
卷号	118 期号:9
英文摘要	Many microorganisms with high prevalence in host populations are beneficial to the host and maintained by specialized transmission mechanisms. Although microbial promotion of host fitness and specificity of the associations undoubtedly enhance microbial prevalence, it is an open question whether these symbiotic traits are also a prerequisite for the evolutionary origin of prevalent microbial taxa. To address this issue, we investigate how processes without positive microbial effects on host fitness or host choice can influence the prevalence of certain microbes in a host population. Specifically, we develop a theoretical model to assess the conditions under which particular microbes can become enriched in animal hosts even when they are not providing a specific benefit to a particular host. We find increased prevalence of specific microbes in a host when both show some overlap in their lifecycles, and especially when both share dispersal routes across a patchy habitat distribution. Our results emphasize that host enrichment per se is not a reliable indicator of beneficial host-microbe interactions. The resulting increase in time spent associated with a host may nevertheless give rise to new selection conditions, which can favor microbial adaptations toward a host-associated lifestyle, and, thus, it could be the foundation for subsequent evolution of mutually beneficial coevolved symbioses. © This open access article is distributed under Creative Commons Attribution License 4.0 (CC BY).
英文关键词	Dispersal; Host-microbiota symbiosis; Microbiota evolution
语种	英语
scopus关键词	animal experiment; animal model; article; habitat; host microbe interaction; lifestyle; nonhuman; prevalence; symbiosis
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/180454
作者单位	Max Planck Institute for Evolutionary Biology, Plön, D-24306, Germany; Zoological Institute, Christian-Albrechts-University Kiel, Kiel, D-24118, Germany; Department of Entomology, Cornell University, Ithaca, NY 14853, United States; Department of Molecular Biology and Genetics, Cornell University, Ithaca, NY 14853, United States
推荐引用方式 GB/T 7714	Sieber M.,Traulsen A.,Schulenburg H.,et al. On the evolutionary origins of host-microbe associations[J],2021,118(9).
APA	Sieber M.,Traulsen A.,Schulenburg H.,&Douglas A.E..(2021).On the evolutionary origins of host-microbe associations.Proceedings of the National Academy of Sciences of the United States of America,118(9).
MLA	Sieber M.,et al."On the evolutionary origins of host-microbe associations".Proceedings of the National Academy of Sciences of the United States of America 118.9(2021).