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Et tu, Brute? Not Even Intracellular Mutualistic Symbionts Escape Horizontal Gene Transfer

1
Biologie Fonctionnelle Insectes et Interactions, UMR203 BF2I, INRA, INSA-Lyon, Université de Lyon, 69100 Villeurbanne, France
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Institute for Integrative Systems Biology (I2SysBio), Universitat de València/CSIC, 46980 Paterna (València), Spain
3
Departament de Genètica, Universitat de València, Dr. Moliner, 50, 46100 Burjassot (València), Spain
*
Author to whom correspondence should be addressed.
Academic Editors: John Jones and Etienne G.J. Danchin
Genes 2017, 8(10), 247; https://doi.org/10.3390/genes8100247
Received: 21 August 2017 / Revised: 14 September 2017 / Accepted: 22 September 2017 / Published: 29 September 2017
(This article belongs to the Special Issue Horizontal Gene Transfer)
Many insect species maintain mutualistic relationships with endosymbiotic bacteria. In contrast to their free-living relatives, horizontal gene transfer (HGT) has traditionally been considered rare in long-term endosymbionts. Nevertheless, meta-omics exploration of certain symbiotic models has unveiled an increasing number of bacteria-bacteria and bacteria-host genetic transfers. The abundance and function of transferred loci suggest that HGT might play a major role in the evolution of the corresponding consortia, enhancing their adaptive value or buffering detrimental effects derived from the reductive evolution of endosymbionts’ genomes. Here, we comprehensively review the HGT cases recorded to date in insect-bacteria mutualistic consortia, and discuss their impact on the evolutionary success of these associations. View Full-Text
Keywords: horizontal gene transfer (HGT); nutritional symbiosis; insects; intracellular bacteria; integrative evolution horizontal gene transfer (HGT); nutritional symbiosis; insects; intracellular bacteria; integrative evolution
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López-Madrigal, S.; Gil, R. Et tu, Brute? Not Even Intracellular Mutualistic Symbionts Escape Horizontal Gene Transfer. Genes 2017, 8, 247.

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