DOI: 10.1073/pnas.1424030112
论文题名: Evolutionary signals of symbiotic persistence in the legume-rhizobia mutualism
作者: Werner G.D.A. ; Cornwell W.K. ; Cornelissen J.H.C. ; Kiers E.T.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2015
卷: 112, 期: 33 起始页码: 10262
结束页码: 10269
语种: 英语
英文关键词: Cooperation
; Deep history
; Persistence
; Reconstruction
; Symbiosis
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
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162356
Appears in Collections: 气候变化与战略
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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
Recommended Citation:
Werner G.D.A.,Cornwell W.K.,Cornelissen J.H.C.,et al. Evolutionary signals of symbiotic persistence in the legume-rhizobia mutualism[J]. Proceedings of the National Academy of Sciences of the United States of America,2015-01-01,112(33)