Trends and barriers to lateral gene transfer in prokaryotes

被引:165
作者
Popa, Ovidiu [1 ]
Dagan, Tal [1 ]
机构
[1] Univ Dusseldorf, Inst Mol Evolut, D-40225 Dusseldorf, Germany
基金
欧洲研究理事会;
关键词
UPTAKE SIGNAL SEQUENCES; TRANSFER AGENT; H-NS; ESCHERICHIA-COLI; HIGH-FREQUENCY; EVOLUTION; DNA; BACTERIAL; NETWORKS; LIFE;
D O I
10.1016/j.mib.2011.07.027
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Gene acquisition by lateral gene transfer (LGT) is an important mechanism for natural variation among prokaryotes. Laboratory experiments show that protein-coding genes can be laterally transferred extremely fast among microbial cells, inherited to most of their descendants, and adapt to a new regulatory regime within a short time. Recent advance in the phylogenetic analysis of microbial genomes using networks approach reveals a substantial impact of LGT during microbial genome evolution. Phylogenomic networks of LGT among prokaryotes reconstructed from completely sequenced genomes uncover barriers to LGT in multiple levels. Here we discuss the kinds of barriers to gene acquisition in nature including physical barriers for gene transfer between cells, genomic barriers for the integration of acquired DNA, and functional barriers for the acquisition of new genes.
引用
收藏
页码:615 / 623
页数:9
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