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-Ling1; Jiang, Zhao1; Li, Yan2; Wang, En-Tao3; Zhi, Xiao-Yang1
发表期刊GENOME BIOLOGY AND EVOLUTION
ISSN1759-6653
2020-11-01
卷号12期号:11页码:2002-2014
关键词Rhizobiaceaephylogenomicssymbiotic plasmidaccessory plasmidgenome expansionsymbiotic nitrogen fixation
DOI10.1093/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.
资助机构National Natural Science Foundation of China
收录类别SCI
语种英语
关键词[WOS]DIVERGENCE TIMES; LEGUME; EVOLUTION; REVEALS; GENES; RATES; DIFFERENTIATION; IDENTIFICATION; PHYLOGENOMICS; PERFORMANCE
研究领域[WOS]Evolutionary Biology; Genetics & Heredity
WOS记录号WOS:000599652700009
引用统计
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/27550
专题海岸带生物学与生物资源利用重点实验室
海岸带生物学与生物资源利用重点实验室_海岸带生物学与生物资源保护实验室

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 7714Yang, 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.
APAYang, 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.
MLAYang, 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.


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