Selfish, promiscuous and sometimes useful: how mobile genetic elements drive horizontal gene transfer in microbial populations

Autor: Matthieu Haudiquet, Jorge Moura de Sousa, Marie Touchon, Eduardo P. C. Rocha
Přispěvatelé: Génomique évolutive des Microbes / Microbial Evolutionary Genomics, Institut Pasteur [Paris] (IP)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), We acknowledge the financial support of Equipe FRM (EQU201903007835), Laboratoire d’Excellence IBEID (ANR-10-LABX-62-IBEID), the INCEPTION program (PIA/ANR-16-CONV-0005), the ANR (SALMOPROPHAGE ANR-16-CE16-0029, ENCAPSULATION ANR-18-CE12-0001-01)., ANR-10-LABX-0062,IBEID,Integrative Biology of Emerging Infectious Diseases(2010), ANR-16-CONV-0005,INCEPTION,Institut Convergences pour l'étude de l'Emergence des Pathologies au Travers des Individus et des populatiONs(2016), ANR-16-CE12-0029,Salmo_prophages,Co-évolution des génomes bactériens et de leurs prophages: cooptation des prophages et conversion lysogenique chez Salmonella(2016), ANR-18-CE12-0001,ENCAPSULATION,Le rôle évolutif des capsules dans l'adaptation bactérienne(2018), Institut Pasteur [Paris]-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)
Rok vydání: 2022
Předmět:
Zdroj: Philosophical Transactions of the Royal Society of London. B (1887–1895)
Philosophical Transactions of the Royal Society of London. B (1887–1895), 2022, 377 (1861), pp.20210234. ⟨10.1098/rstb.2021.0234⟩
ISSN: 1471-2970
0264-3839
DOI: 10.1098/rstb.2021.0234⟩
Popis: Horizontal gene transfer (HGT) drives microbial adaptation but is often under the control of mobile genetic elements (MGEs) whose interests are not necessarily aligned with those of their hosts. In general, transfer is costly to the donor cell while potentially beneficial to the recipients. The diversity and plasticity of cell–MGEs interactions, and those among MGEs, result in complex evolutionary processes where the source, or even the existence of selection for maintaining a function in the genome, is often unclear. For example, MGE-driven HGT depends on cell envelope structures and defense systems, but many of these are transferred by MGEs themselves. MGEs can spur periods of intense gene transfer by increasing their own rates of horizontal transmission upon communicating, eavesdropping, or sensing the environment and the host physiology. This may result in high-frequency transfer of host genes unrelated to the MGE. Here, we review how MGEs drive HGT and how their transfer mechanisms, selective pressures and genomic traits affect gene flow, and therefore adaptation, in microbial populations. The encoding of many adaptive niche-defining microbial traits in MGEs means that intragenomic conflicts and alliances between cells and their MGEs are key to microbial functional diversification. This article is part of a discussion meeting issue ‘Genomic population structures of microbial pathogens’.
Databáze: OpenAIRE