气候变化领域集成服务门户(CCPortal): Interspecific conflict and the evolution of ineffective rhizobia

CCPortal

DOI	10.1111/ele.13247
	Interspecific conflict and the evolution of ineffective rhizobia
	Gano-Cohen K.A.; Wendlandt C.E.; Stokes P.J.; Blanton M.A.; Quides K.W.; Zomorrodian A.; Adinata E.S.; Sachs J.L.
发表日期	2019
ISSN	1461023X
卷号	22 期号:6
英文摘要	Microbial symbionts exhibit broad genotypic variation in their fitness effects on hosts, leaving hosts vulnerable to costly partnerships. Interspecific conflict and partner-maladaptation are frameworks to explain this variation, with different implications for mutualism stability. We investigated the mutualist service of nitrogen fixation in a metapopulation of root-nodule forming Bradyrhizobium symbionts in Acmispon hosts. We uncovered Bradyrhizobium genotypes that provide negligible mutualist services to hosts and had superior in planta fitness during clonal infections, consistent with cheater strains that destabilise mutualisms. Interspecific conflict was also confirmed at the metapopulation level – by a significant negative association between the fitness benefits provided by Bradyrhizobium genotypes and their local genotype frequencies – indicating that selection favours cheating rhizobia. Legumes have mechanisms to defend against rhizobia that fail to fix sufficient nitrogen, but these data support predictions that rhizobia can subvert plant defenses and evolve to exploit hosts. © 2019 John Wiley & Sons Ltd/CNRS
英文关键词	Acmispon strigosus; Bradyrhizobium; cheating; legume–rhizobium mutualism; maladaptation; mutualism breakdown; sanctions; symbiosis
语种	英语
scopus关键词	Bradyrhizobium; Rhizobium; Bradyrhizobium; evolution; Fabaceae; nitrogen fixation; Rhizobium; symbiosis; Biological Evolution; Bradyrhizobium; Fabaceae; Nitrogen Fixation; Rhizobium; Symbiosis
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/121079
作者单位	Department of Microbiology and Plant Pathology, University of California, Riverside, CA, United States; Department of Evolution Ecology & Organismal Biology, University of California, Riverside, CA, United States; Department of Botany and Plant Sciences, University of California, Riverside, CA, United States; Institute for Integrative Genome Biology, University of California, Riverside, CA, United States
推荐引用方式 GB/T 7714	Gano-Cohen K.A.,Wendlandt C.E.,Stokes P.J.,et al. Interspecific conflict and the evolution of ineffective rhizobia[J],2019,22(6).
APA	Gano-Cohen K.A..,Wendlandt C.E..,Stokes P.J..,Blanton M.A..,Quides K.W..,...&Sachs J.L..(2019).Interspecific conflict and the evolution of ineffective rhizobia.Ecology Letters,22(6).
MLA	Gano-Cohen K.A.,et al."Interspecific conflict and the evolution of ineffective rhizobia".Ecology Letters 22.6(2019).