Horizontal gene transfer accelerates genome innovation and evolution

被引：230

作者：

Jain, R ^{[1
]}

Rivera, MC

Moore, JE

Lake, JA

机构：

[1] Univ Calif Los Angeles, Inst Mol Biol, Los Angeles, CA 90024 USA

[2] Univ Calif Los Angeles, Inst Geophys & Planetary Phys Astrobiol, Los Angeles, CA USA

来源：

MOLECULAR BIOLOGY AND EVOLUTION | 2003年 / 20卷 / 10期

关键词：

horizontal gene transfer; lateral gene transfer; exchange community; genome evolution;

D O I：

10.1093/molbev/msg154

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Horizontal gene transfer (HGT) spreads genetic diversity by moving genes across species boundaries. By rapidly introducing newly evolved genes into existing genomes, HGT circumvents the slow step of ab initio gene creation and accelerates genome innovation. However, HGT can only affect organisms that readily exchange genes (exchange communities). In order to define exchange communities and understand the internal and external environmental factors that regulate HGT, we analyzed approximately 20,000 genes contained in eight free-living prokaryotic genomes. These analyses indicate that HGT occurs among organisms that share similar factors. The most significant are genome size, genome G/C composition, carbon utilization, and oxygen tolerance.

引用

页码：1598 / 1602

页数：5

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