Reductive genome evolution at both ends of the bacterial population size spectrum

被引：112

作者：

Batut, Berenice ^{[1
,2
]}

Knibbe, Carole ^{[3
]}

Marais, Gabriel ^{[1
]}

Daubin, Vincent ^{[1
]}

机构：

[1] Univ Lyon 1, CNRS, Lab Biometrie & Biol Evolut, UMR5558, F-69622 Villeurbanne, France

[2] Univ Lyon, Lab Informat Images & Syst Informat LIRIS, French Inst Res Comp Sci & Automat INRIA, Inst Natl Sci Appl INSA Lyon,CNRS,UMR5205, F-69621 Villeurbanne, France

[3] Univ Lyon 1, INRIA, CNRS, LIRIS,UMR5205, F-69622 Villeurbanne, France

来源：

NATURE REVIEWS MICROBIOLOGY | 2014年 / 12卷 / 12期

关键词：

MUTATION-RATE; ENDOSYMBIONTS BUCHNERA; SEQUENCE EVOLUTION; ADAPTIVE EVOLUTION; MICROBIAL GENOME; MULLERS RATCHET; DELETIONAL BIAS; GENETIC DRIFT; PROCHLOROCOCCUS; SELECTION;

D O I：

10.1038/nrmicro3331

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

Bacterial genomes show substantial variations in size. The smallest bacterial genomes are those of endocellular symbionts of eukaryotic hosts, which have undergone massive genome reduction and show patterns that are consistent with the degenerative processes that are predicted to occur in species with small effective population sizes. However, similar genome reduction is found in some free-living marine cyanobacteria that are characterized by extremely large populations. In this Opinion article, we discuss the different hypotheses that have been proposed to account for this reductive genome evolution at both ends of the bacterial population size spectrum.

引用

页码：841 / 850

页数：10

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