气候变化领域集成服务门户(CCPortal): Nonlinear frequency-dependent selection promotes long-term coexistence between bacteria species

CCPortal

DOI	10.1111/ele.13276
	Nonlinear frequency-dependent selection promotes long-term coexistence between bacteria species
	Harmand N.; Federico V.; Hindré T.; Lenormand T.
发表日期	2019
ISSN	1461023X
卷号	22 期号:8
英文摘要	Negative frequency-dependent selection (NFDS) is an important mechanism for species coexistence and for the maintenance of genetic polymorphism. Long-term coexistence nevertheless requires NFDS interactions to be resilient to further evolution of the interacting species or genotypes. For closely related genotypes, NFDS interactions have been shown to be preserved through successive rounds of evolution in coexisting lineages. On the contrary, the evolution of NFDS interactions between distantly related species has received less attention. Here, we tracked the co-evolution of Escherichia coli and Citrobacter freundii that initially differ in their ecological characteristics. We showed that these two bacterial species engaged in an NFDS interaction particularly resilient to further evolution: despite a very strong asymmetric rate of adaptation, their coexistence was maintained owing to an NFDS pattern where fitness increases steeply as the frequency decreases towards zero. Using a model, we showed how and why such NFDS pattern can emerge. These findings provide a robust explanation for the long-term maintenance of species at very low frequencies. © 2019 John Wiley & Sons Ltd/CNRS
英文关键词	Citrobacter freundii; Escherichia coli; experimental co-evolution; Nalidixic acid; negative frequency-dependent selection; NFDS; polymorphism
语种	英语
scopus关键词	Bacteria (microorganisms); Citrobacter freundii; Escherichia coli; bacterium; Citrobacter freundii; ecology; Escherichia coli; genetic polymorphism; genetic selection; genetics; Bacteria; Citrobacter freundii; Ecology; Escherichia coli; Polymorphism, Genetic; Selection, Genetic
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/121064
作者单位	UMR 5175, CEFE, CNRS – Université Montpellier – Université P. Valéry – EPHE, Montpellier, Cedex 5, France; University Grenoble Alpes, Centre National de la Recherche Scientifique (CNRS), Grenoble Institut National Polytechnique (INP), Mathématiques et Applications, Grenoble (TIMC-IMAG), Techniques de l'Ingénierie Médicale et de la Complexité - Informatique, Grenoble, F-38000, France
推荐引用方式 GB/T 7714	Harmand N.,Federico V.,Hindré T.,et al. Nonlinear frequency-dependent selection promotes long-term coexistence between bacteria species[J],2019,22(8).
APA	Harmand N.,Federico V.,Hindré T.,&Lenormand T..(2019).Nonlinear frequency-dependent selection promotes long-term coexistence between bacteria species.Ecology Letters,22(8).
MLA	Harmand N.,et al."Nonlinear frequency-dependent selection promotes long-term coexistence between bacteria species".Ecology Letters 22.8(2019).