A rare SAR11 fosmid clone confirming genetic variability in the 'Candidatus Pelagibacter ubique' genome

被引：20

作者：

Gilbert, Jack A. ^{[1
]}

Muehling, Martin ^{[1
]}

Joint, Ian ^{[1
]}

机构：

[1] Plymouth Marine Lab, Plymouth PL1 3DH, Devon, England

来源：

ISME JOURNAL | 2008年 / 2卷 / 07期

基金：

英国自然环境研究理事会;

关键词：

SAR11; pelagibacter; fosmid; genome plasticity; horizontal gene transfer; bacteria;

D O I：

10.1038/ismej.2008.49

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

A sequence analysis is described of a fosmid clone from a coastal marine metagenomic library that contains a 16S rRNA gene with high sequence similarity to that of the SAR11 bacterium 'Candidatus Pelagibacter ubique' HTCC1062. The sequence of the fosmid clone was 32 086 bp in length and contained 23 187 bp of the 48-kb hyper-variable region 2 (HVR2) present in the genome of 'Cand. P. ubique'. However, half of the sequences within the HVR2 region of the fosmid clone show little sequence similarity to or have no representative homologues in the genome sequence of 'Cand. P. ubique' HTCC1062. Given their putative functions, the acquisition of these genes suggests that SAR11 could harbour more diverse phenotypes than represented by the 16S rRNA taxonomy. Variation in SAR11 genomes from different locations might explain why SAR11 is abundant in so many diverse marine provinces.

引用

页码：790 / 793

页数：4

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