期刊
FEMS MICROBIOLOGY LETTERS
卷 246, 期 2, 页码 213-219出版社
OXFORD UNIV PRESS
DOI: 10.1016/j.femsle.2005.04.009
关键词
gene conversion; polymorphism; rrn operons; Vibrio parahaemolyticus; 16S rRNA
类别
The genome sequence of a strain of Vibrio parahaemolyticus holds 11 copies of rRNA operons (rrn) with identical 16S rRNA genes (rrs). Conversely, the species type strain contains two rrs classes differing in 10 nucleotide sites within a short segment of 25 bp. Furthermore, we show here that the sequence of this particular segment largely differs between some strains of this species. We also show that of the eleven rrn operons in the species type strain, seven contain one rrs class and four the other, indicating gene conversion. Our results support the hypothesis that the rrs differences observed between strains of this species were caused by lateral transfer of an rrs segment and subsequent conversion. (c) 2005 Federation of European Microbiological Societies. Published by Elsevier B.V. All rights reserved.
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