Journal
GENOME BIOLOGY AND EVOLUTION
Volume 6, Issue 4, Pages 912-920Publisher
OXFORD UNIV PRESS
DOI: 10.1093/gbe/evu062
Keywords
symbiosis; acetic acid bacteria; cytochrome oxidase
Categories
Funding
- European Union [GA-245746]
- Italian Ministry of Education, University and Research (MIUR) [009L27YC8_003]
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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 bo(3) 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.
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