Genome evolution in bacterial endosymbionts of insects

被引:323
作者
Wernegreen, JJ [1 ]
机构
[1] Marine Biol Lab, Josephine Bay Paul Ctr Comparat Mol Biol & Evolut, Woods Hole, MA 02543 USA
基金
美国国家卫生研究院; 美国国家科学基金会;
关键词
D O I
10.1038/nrg931
中图分类号
Q3 [遗传学];
学科分类号
071007 ; 090102 ;
摘要
Many insect species rely on intracellular bacterial symbionts for their viability and fecundity. Large-scale DNA-sequence analyses are revealing the forces that shape the evolution of these bacterial associates and the genetic basis of their specialization to an intracellular lifestyle. The full genome sequences of two obligate mutualists, Buchnera aphidicola of aphids and Wigglesworthia glossinidia of tsetse flies, reveal substantial gene loss and an integration of host and symbiont metabolic functions. Further genomic comparisons should reveal the generality of these features among bacterial mutualists and the extent to which they are shared with other intracellular bacteria, including obligate pathogens.
引用
收藏
页码:850 / 861
页数:12
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