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Reductive genome evolution at both ends of bacterial population size spectrum

Bérénice Batut 1, 2, 3 Carole Knibbe 1, 3 Gabriel Marais 2 Vincent Daubin 4, *
* Corresponding author
2 Sexe et évolution
PEGASE - Département PEGASE [LBBE]
3 BEAGLE - Artificial Evolution and Computational Biology
LBBE - Laboratoire de Biométrie et Biologie Evolutive - UMR 5558, Inria Grenoble - Rhône-Alpes, LIRIS - Laboratoire d'InfoRmatique en Image et Systèmes d'information
Abstract : 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 consistent with degenerative processes 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. Here, we discuss the various hypotheses that have been put forward to account for this reductive genome evolution at both ends of the spectrum of bacterial population size.
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https://hal.archives-ouvertes.fr/hal-01092392
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Submitted on : Monday, December 8, 2014 - 4:12:31 PM
Last modification on : Tuesday, July 20, 2021 - 5:20:05 PM

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Bérénice Batut, Carole Knibbe, Gabriel Marais, Vincent Daubin. Reductive genome evolution at both ends of bacterial population size spectrum. Nature Reviews Microbiology, Nature Publishing Group, 2014, 12 (12), pp.841-850. ⟨10.1038/nrmicro3331⟩. ⟨hal-01092392⟩

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