4.5 Article

Detection of the type III secretion system and its phylogenetic and symbiotic characterization in peanut bradyrhizobia isolated from Guangdong Province, China

期刊

SYSTEMATIC AND APPLIED MICROBIOLOGY
卷 41, 期 5, 页码 437-443

出版社

ELSEVIER GMBH
DOI: 10.1016/j.syapm.2018.03.006

关键词

Symbiotic; Bradyrhizobia; T3SS; Peanut; Genetic

资金

  1. National Natural Science Foundation of China [31570006, 31000002]
  2. National Natural Science Foundation of Guangdong Province [2015A030313380]

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The distribution of rhcRST and rhcJ-C1 fragments located in different loci of the type III secretion system (T3SS) gene cluster in the peanut-nodulating bradyrhizobia isolated from Guangdong Province, China was investigated by PCR-based sequencing. T3SS was detected in approximately one-third of the peanut bradyrhizobial strains and the T3SS-harboring strains belonging to different Bradyrhizobium genomic species. Diverse T3SS groups corresponding to different symbiotic gene types were defined among the 23 T3SS-harboring strains. The same or similar T3SS genes were detected in different genospecies, indicating that interspecies horizontal transfer of symbiotic genes had occurred in the Bradyrhizobium genus. (C) 2018 Published by Elsevier GmbH.

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