期刊
ISME JOURNAL
卷 3, 期 12, 页码 1420-1424出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ismej.2009.79
关键词
lateral gene transfer; biofilm; transposase
资金
- NOAA Ocean Exploration
- NASA Astrobiology Institute through the Carnegie Institution for Science
The carbonate chimneys of the Lost City Hydrothermal Field on the Mid-Atlantic Ridge are coated in thick microbial biofilms consisting of just a few dominant species. We report a preliminary analysis of a biofilm metagenome that revealed a remarkable abundance and diversity of genes potentially involved in lateral gene transfer (LGT). More than 8% of all metagenomic reads showed significant sequence similarity to transposases; all available metagenomic data sets from other environments contained at least an order of magnitude fewer transposases. Furthermore, the sequence diversity of transposase genes in the biofilm was much greater than that of 16S rRNA genes. The small size and high sequencing coverage of contigs containing transposases indicate that they are located on small but abundant extragenomic molecules. These results suggest that rampant LGT among members of the Lost City biofilm may serve as a generator of phenotypic diversity in a community with very low organismal diversity. The ISME Journal (2009) 3, 1420-1424; doi: 10.1038/ismej.2009.79; published online 2 July 2009
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据