Fitness trade-offs and the origins of endosymbiosis.

Autor: Michael A Brockhurst, Duncan D Cameron, Andrew P Beckerman
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: PLoS Biology, Vol 22, Iss 4, p e3002580 (2024)
Druh dokumentu: article
ISSN: 1544-9173
1545-7885
DOI: 10.1371/journal.pbio.3002580&type=printable
Popis: Endosymbiosis drives evolutionary innovation and underpins the function of diverse ecosystems. The mechanistic origins of symbioses, however, remain unclear, in part because early evolutionary events are obscured by subsequent evolution and genetic drift. This Essay highlights how experimental studies of facultative, host-switched, and synthetic symbioses are revealing the important role of fitness trade-offs between within-host and free-living niches during the early-stage evolution of new symbiotic associations. The mutational targets underpinning such trade-offs are commonly regulatory genes, such that single mutations have major phenotypic effects on multiple traits, thus enabling and reinforcing the transition to a symbiotic lifestyle.
Databáze: Directory of Open Access Journals
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