气候变化领域集成服务门户(CCPortal): Evolutionary signals of symbiotic persistence in the legume-rhizobia mutualism

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DOI	10.1073/pnas.1424030112
	Evolutionary signals of symbiotic persistence in the legume-rhizobia mutualism
	Werner G.D.A.; Cornwell W.K.; Cornelissen J.H.C.; Kiers E.T.
发表日期	2015
ISSN	0027-8424
起始页码	10262
结束页码	10269
卷号	112 期号:33
英文摘要	Understanding the origins and evolutionary trajectories of symbiotic partnerships remains a major challenge. Why are some symbioses lost over evolutionary time whereas others become crucial for survival? Here, we use a quantitative trait reconstruction method to characterize different evolutionary stages in the ancient symbiosis between legumes (Fabaceae) and nitrogen-fixing bacteria, asking how labile is symbiosis across different host clades. We find that more than half of the 1,195 extant nodulating legumes analyzed have a high likelihood (>95%) of being in a state of high symbiotic persistence, meaning that they show a continued capacity to form the symbiosis over evolutionary time, even though the partnership has remained facultative and is not obligate. To explore patterns associated with the likelihood of loss and retention of the N2-fixing symbiosis, we tested for correlations between symbiotic persistence and legume distribution, climate, soil and trait data. We found a strong latitudinal effect and demonstrated that low mean annual temperatures are associated with high symbiotic persistence in legumes. Although no significant correlations between soil variables and symbiotic persistence were found, nitrogen and phosphorus leaf contents were positively correlated with legumes in a state of high symbiotic persistence. This pattern suggests that highly demanding nutrient lifestyles are associated with more stable partnerships, potentially because they "lock" the hosts into symbiotic dependency. Quantitative reconstruction methods are emerging as a powerful comparative tool to study broad patterns of symbiont loss and retention across diverse partnerships. © 2015, National Academy of Sciences. All rights reserved.
英文关键词	Cooperation; Deep history; Persistence; Reconstruction; Symbiosis
语种	英语
scopus关键词	nitrogen; phosphorus; Article; climate; Fabaceae; nitrogen fixation; nonhuman; nutrient; phylogeny; plant nutrient; priority journal; quantitative trait; Rhizobiaceae; soil property; symbiont; symbiosis; temperature; biological model; chemistry; Fabaceae; genetics; geography; microbiology; molecular evolution; physiology; plant leaf; quantitative trait locus; Rhizobium; statistical model; Fabaceae; Evolution, Molecular; Fabaceae; Geography; Likelihood Functions; Models, Genetic; Nitrogen; Nitrogen Fixation; Phosphorus; Phylogeny; Plant Leaves; Quantitative Trait Loci; Rhizobium; Symbiosis; Temperature
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/159091
作者单位	Werner, G.D.A., Department of Ecological Science, Vrije Universiteit Amsterdam, Amsterdam, 1081 HV, Netherlands; Cornwell, W.K., Ecology and Evolution Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia; Cornelissen, J.H.C., Department of Ecological Science, Vrije Universiteit Amsterdam, Amsterdam, 1081 HV, Netherlands; Kiers, E.T., Department of Ecological Science, Vrije Universiteit Amsterdam, Amsterdam, 1081 HV, Netherlands
推荐引用方式 GB/T 7714	Werner G.D.A.,Cornwell W.K.,Cornelissen J.H.C.,et al. Evolutionary signals of symbiotic persistence in the legume-rhizobia mutualism[J],2015,112(33).
APA	Werner G.D.A.,Cornwell W.K.,Cornelissen J.H.C.,&Kiers E.T..(2015).Evolutionary signals of symbiotic persistence in the legume-rhizobia mutualism.Proceedings of the National Academy of Sciences of the United States of America,112(33).
MLA	Werner G.D.A.,et al."Evolutionary signals of symbiotic persistence in the legume-rhizobia mutualism".Proceedings of the National Academy of Sciences of the United States of America 112.33(2015).