气候变化领域集成服务门户(CCPortal): The macroevolutionary dynamics of symbiotic and phenotypic diversification in lichens

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DOI	10.1073/pnas.2001913117
	The macroevolutionary dynamics of symbiotic and phenotypic diversification in lichens
	Nelsen M.P.; Lücking R.; Boyce C.K.; Lumbsch H.T.; Ree R.H.
发表日期	2020
ISSN	0027-8424
起始页码	21495
结束页码	21503
卷号	117 期号:35
英文摘要	Symbioses are evolutionarily pervasive and play fundamental roles in structuring ecosystems, yet our understanding of their macroevolutionary origins, persistence, and consequences is incomplete. We traced the macroevolutionary history of symbiotic and phenotypic diversification in an iconic symbiosis, lichens. By inferring the most comprehensive time-scaled phylogeny of lichen-forming fungi (LFF) to date (over 3,300 species), we identified shifts among symbiont classes that broadly coincided with the convergent evolution of phylogenetically or functionally similar associations in diverse lineages (plants, fungi, bacteria).While a relatively recent loss of lichenization in Lecanoromycetes was previously identified, our work instead suggests lichenization was abandoned far earlier, interrupting what had previously been considered a direct switch between trebouxiophycean and trentepohlialean algal symbionts. Consequently, some of the most diverse clades of LFF are instead derived from nonlichenized ancestors and re-evolved lichenization with Trentepohliales algae, a clade that also facilitated lichenization in unrelated lineages of LFF. Furthermore, while symbiont identity and symbiotic phenotype influence the ecology and physiology of lichens, they are not correlated with rates of lineage birth and death, suggesting more complex dynamics underly lichen diversification. Finally, diversification patterns of LFF differed from those of wood-rotting and ectomycorrhizal taxa, likely reflecting contrasts in their fundamental biological properties. Together, our work provides a timeline for the ecological contributions of lichens, and reshapes our understanding of symbiotic persistence in a classic model of symbiosis. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Diversification; Macroevolution; Symbiosis
语种	英语
scopus关键词	article; cladistics; convergent evolution; ecology; Lecanoromycetes; lichen (organism); nonhuman; phenotype; phylogeny; symbiont; Trebouxiophyceae; Ascomycetes; DNA sequence; ecosystem; evolution; genetics; green alga; lichen (organism); metabolism; procedures; symbiosis; Ascomycota; Biological Evolution; Chlorophyta; Ecosystem; Lichens; Phylogeny; Sequence Analysis, DNA; 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/160830
作者单位	Nelsen, M.P., Department of Science and Education, Negaunee Integrative Research Center, Field Museum, Chicago, IL 60605, United States; Lücking, R., Botanischer Garten und Botanisches Museum, Freie Universität Berlin, Berlin, 14195, Germany; Boyce, C.K., Department of Geological Sciences, Stanford University, Stanford, CA 94305, United States; Lumbsch, H.T., Department of Science and Education, Negaunee Integrative Research Center, Field Museum, Chicago, IL 60605, United States; Ree, R.H., Department of Science and Education, Negaunee Integrative Research Center, Field Museum, Chicago, IL 60605, United States
推荐引用方式 GB/T 7714	Nelsen M.P.,Lücking R.,Boyce C.K.,et al. The macroevolutionary dynamics of symbiotic and phenotypic diversification in lichens[J],2020,117(35).
APA	Nelsen M.P.,Lücking R.,Boyce C.K.,Lumbsch H.T.,&Ree R.H..(2020).The macroevolutionary dynamics of symbiotic and phenotypic diversification in lichens.Proceedings of the National Academy of Sciences of the United States of America,117(35).
MLA	Nelsen M.P.,et al."The macroevolutionary dynamics of symbiotic and phenotypic diversification in lichens".Proceedings of the National Academy of Sciences of the United States of America 117.35(2020).