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Genome Biol Evol. 2014 Apr;6(4):912-20. doi: 10.1093/gbe/evu062.

Acetic acid bacteria genomes reveal functional traits for adaptation to life in insect guts.

Author information

1
Department of Food, Environmental, and Nutritional Sciences (DeFENS), University of Milan, Italy.

Abstract

Acetic acid bacteria (AAB) live in sugar rich environments, including food matrices, plant tissues, and the gut of sugar-feeding insects. By comparing the newly sequenced genomes of Asaia platycodi and Saccharibacter sp., symbionts of Anopheles stephensi and Apis mellifera, respectively, with those of 14 other AAB, we provide a genomic view of the evolutionary pattern of this bacterial group and clues on traits that explain the success of AAB as insect symbionts. A specific pre-adaptive trait, cytochrome bo3 ubiquinol oxidase, appears ancestral in AAB and shows a phylogeny that is congruent with that of the genomes. The functional properties of this terminal oxidase might have allowed AAB to adapt to the diverse oxygen levels of arthropod guts.

KEYWORDS:

acetic acid bacteria; cytochrome oxidase; symbiosis

PMID:
24682158
PMCID:
PMC4007555
DOI:
10.1093/gbe/evu062
[Indexed for MEDLINE]
Free PMC Article

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