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| Genetic divergence and gene flow among Mesorhizobium strains nodulating the shrub legume Caragana | |
| Ji, Zhaojun1,2; Yan, Hui1,2; Cui, Qingguo3; Wang, Entao4; Chen, Wenxin1,2; Chen, Wenfeng1,2 | |
| 2015 | |
| 发表期刊 | SYSTEMATIC AND APPLIED MICROBIOLOGY
 |
| ISSN | 0723-2020 |
| 卷号 | 38期号:3页码:176-183 |
| 摘要 | Although the biogeography of rhizobia has been investigated extensively, little is known about the adaptive molecular evolution of rhizobia influenced by soil environments and selected by legumes. In this study, microevolution of Mesorhizobium strains nodulating Caragana in a semi-fixing desert belt in northern China was investigated. Five core genes-atpD, glnII, gyrB, recA, and rpoB, six heat-shock factor genes-clpA, clpB, dnaK, dnaf, grpE, and hlsU, and five nodulation genes-nodA, nodC, nodD, nodG, and nodP, of 72 representative mesorhizobia were studied in order to determine their genetic variations. A total of 21 genospecies were defined based on the average nucleotide identity (ANI) of concatenated core genes using a threshold of 96% similarity, and by the phylogenetic analyses of the core/heat-shock factor genes. Significant genetic divergence was observed among the genospecies in the semi-fixing desert belt (areas A-E) and Yunnan province (area F), which was closely related to the environmental conditions and geographic distance. Gene flow occurred more frequently among the genospecies in areas A-E, and three sites in area B, than between area F and the other five areas. Recombination occurred among strains more frequently for heat-shock factor genes than the other genes. The results conclusively showed that the Caragana-associated mesorhizobia had divergently evolved according to their geographic distribution, and have been selected not only by the environmental conditions but also by the host plants. (C) 2015 Elsevier GmbH. All rights reserved. |
| 关键词 | Mesorhizobium Caragana Microevolution Mutation Recombination Phylogeny |
| 学科领域 | Biotechnology & Applied Microbiology ; Microbiology |
| DOI | 10.1016/j.syapm.2015.02.007 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS关键词 | MULTILOCUS SEQUENCE-ANALYSIS ; ALKALINE SOILS ; SP NOV. ; NORTH ; DNA ; DIVERSITY ; SPP. ; MICROSYMBIONTS ; MICROEVOLUTION ; RECOMBINATION |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| WOS记录号 | WOS:000355063000005 |
| 出版者 | ELSEVIER GMBH |
| 文献子类 | Article |
| 出版地 | MUNICH |
| EISSN | 1618-0984 |
| 资助机构 | National Natural Science Foundation of China [31270052] |
| 作者邮箱 | chenwf@cau.edu.cn |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ibcas.ac.cn/handle/2S10CLM1/25665 |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.State Key Lab Agrobiotechnol, Beijing 100193, Peoples R China 2.China Agr Univ, Coll Biol Sci, Beijing 100193, Peoples R China 3.China Agr Univ, Rhizobia Res Ctr, Beijing 100193, Peoples R China 4.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 5.Inst Politecn Nacl, Escuela Nacl Ciencias Biol, Dept Microbiol, Mexico City 11340, DF, Mexico |
| 推荐引用方式 GB/T 7714 | Ji, Zhaojun,Yan, Hui,Cui, Qingguo,et al. Genetic divergence and gene flow among Mesorhizobium strains nodulating the shrub legume Caragana[J]. SYSTEMATIC AND APPLIED MICROBIOLOGY,2015,38(3):176-183. |
| APA | Ji, Zhaojun,Yan, Hui,Cui, Qingguo,Wang, Entao,Chen, Wenxin,&Chen, Wenfeng.(2015).Genetic divergence and gene flow among Mesorhizobium strains nodulating the shrub legume Caragana.SYSTEMATIC AND APPLIED MICROBIOLOGY,38(3),176-183. |
| MLA | Ji, Zhaojun,et al."Genetic divergence and gene flow among Mesorhizobium strains nodulating the shrub legume Caragana".SYSTEMATIC AND APPLIED MICROBIOLOGY 38.3(2015):176-183. |
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| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| 25864639.pdf（2154KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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