論文

査読有り
2015年1月

Contrasting Inter- and Intraspecies Recombination Patterns in the "Harveyi Clade" Vibrio Collected over Large Spatial and Temporal Scales

GENOME BIOLOGY AND EVOLUTION
  • Henryk Urbanczyk
  • ,
  • Yoshitoshi Ogura
  • ,
  • Tetsuya Hayashi

7
1
開始ページ
71
終了ページ
80
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1093/gbe/evu269
出版者・発行元
OXFORD UNIV PRESS

Recombination plays an important role in the divergence of bacteria, but the frequency of interspecies and intraspecies recombination events remains poorly understood. We investigated recombination events that occurred within core genomes of 35 Vibrio strains (family Vibrionaceae, Gammaproteobacteria), from six closely related species in the so-called "Harveyi clade." The strains were selected from a collection of strains isolated in the last 90 years, from various environments worldwide. We found a close relationship between the number of interspecies recombination events within core genomes of the 35 strains and the overall genomic identity, as inferred from calculations of the average nucleotide identity. The relationship between the overall nucleotide identity and the number of detected interspecies recombination events was comparable when analyzing strains isolated over 80 years apart, from different hemispheres, or from different ecologies, as well as in strains isolated from the same geographic location within a short time frame. We further applied the same method of detecting recombination events to analyze 11 strains of Vibrio campbellii, and identified disproportionally high number of intraspecies recombination events within the core genomes of some, but not all, strains. The high number of recombination events was detected between V. campbellii strains that have significant temporal (over 18 years) and geographical (over 10,000 km) differences in their origins of isolation. Results of this study reveal a remarkable stability of Harveyi clade species, and give clues about the origins and persistence of species in the clade.

Web of Science ® 被引用回数 : 12

リンク情報
DOI
https://doi.org/10.1093/gbe/evu269
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000350036100005&DestApp=WOS_CPL
URL
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84928230367&origin=inward