Plasmids Related to the Symbiotic Nitrogen Fixation Are Not Only Cooperated Functionally but Also May Have Evolved over a Time Span in Family Rhizobiaceae

doi:10.1093/gbe/evaa152

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	Plasmids Related to the Symbiotic Nitrogen Fixation Are Not Only Cooperated Functionally but Also May Have Evolved over a Time Span in Family Rhizobiaceae
	Yang, Ling-Ling 1; Jiang, Zhao 1; Li, Yan 2; Wang, En-Tao 3; Zhi, Xiao-Yang 1
刊名	GENOME BIOLOGY AND EVOLUTION
	2020-11-01
卷号	12 期号:11 页码:2002-2014
关键词	Rhizobiaceae phylogenomics symbiotic plasmid accessory plasmid genome expansion symbiotic nitrogen fixation
ISSN号	1759-6653
DOI	10.1093/gbe/evaa152
通讯作者	Zhi, Xiao-Yang(xyzhi@ynu.edu.cn)
英文摘要	Rhizobia are soil bacteria capable of forming symbiotic nitrogen-fixing nodules associated with leguminous plants. In fast-growing legume-nodulating rhizobia, such as the species in the family Rhizobiaceae, the symbiotic plasmid is the main genetic basis for nitrogen-fixing symbiosis, and is susceptible to horizontal gene transfer. To further understand the symbioses evolution in Rhizobiaceae, we analyzed the pan-genome of this family based on 92 genomes of type/reference strains and reconstructed its phylogeny using a phylogenomics approach. Intriguingly, although the genetic expansion that occurred in chromosomal regionswas the main reason for the high proportion of low-frequency flexible gene families in the pan-genome, gene gain events associated with accessory plasmids introduced more genes into the genomes of nitrogen-fixing species. For symbiotic plasmids, although horizontal gene transfer frequently occurred, transfer may be impeded by, such as, the host's physical isolation and soil conditions, even among phylogenetically close species. During coevolution with leguminous hosts, the plasmid system, including accessory and symbiotic plasmids, may have evolved over a time span, and provided rhizobial species with the ability to adapt to various environmental conditions and helped them achieve nitrogen fixation. These findings provide new insights into the phylogeny of Rhizobiaceae and advance our understanding of the evolution of symbiotic nitrogen fixation.
资助项目	National Natural Science Foundation of China[31500007] ; National Natural Science Foundation of China[31560309]
WOS关键词	DIVERGENCE TIMES ; LEGUME ; EVOLUTION ; REVEALS ; GENES ; RATES ; DIFFERENTIATION ; IDENTIFICATION ; PHYLOGENOMICS ; PERFORMANCE
WOS研究方向	Evolutionary Biology ; Genetics & Heredity
语种	英语
WOS记录号	WOS:000599652700009
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/27549]
专题	海岸带生物学与生物资源利用重点实验室烟台海岸带研究所_海岸带生物学与生物资源利用所重点实验室
通讯作者	Zhi, Xiao-Yang
作者单位	1.Yunnan Univ, Sch Life Sci, Yunnan Inst Microbiol, Kunming, Yunnan, Peoples R China 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Biol & Utilizat, Yantai, Shandong, Peoples R China 3.Inst Politecn Nacl, Dept Microbiol, Escuela Nacl Ciencias Biol, Mexico City, DF, Mexico
推荐引用方式 GB/T 7714	Yang, Ling-Ling,Jiang, Zhao,Li, Yan,et al. Plasmids Related to the Symbiotic Nitrogen Fixation Are Not Only Cooperated Functionally but Also May Have Evolved over a Time Span in Family Rhizobiaceae[J]. GENOME BIOLOGY AND EVOLUTION,2020,12(11):2002-2014.
APA	Yang, Ling-Ling,Jiang, Zhao,Li, Yan,Wang, En-Tao,&Zhi, Xiao-Yang.(2020).Plasmids Related to the Symbiotic Nitrogen Fixation Are Not Only Cooperated Functionally but Also May Have Evolved over a Time Span in Family Rhizobiaceae.GENOME BIOLOGY AND EVOLUTION,12(11),2002-2014.
MLA	Yang, Ling-Ling,et al."Plasmids Related to the Symbiotic Nitrogen Fixation Are Not Only Cooperated Functionally but Also May Have Evolved over a Time Span in Family Rhizobiaceae".GENOME BIOLOGY AND EVOLUTION 12.11(2020):2002-2014.