Parallels between experimental and natural evolution of legume symbionts - Archive ouverte HAL Access content directly
Journal Articles Nature Communications Year : 2018

Parallels between experimental and natural evolution of legume symbionts

(1, 2) , (1, 2) , , (3) , (4) , (5) , (6) , (3) , (1, 2)
1
2
3
4
5
6

Abstract

The emergence of symbiotic interactions has been studied using population genomics in nature and experimental evolution in the laboratory, but the parallels between these processes remain unknown. Here we compare the emergence of rhizobia after the horizontal transfer of a symbiotic plasmid in natural populations of $Cupriavidus\ taiwanensis$, over 10 MY ago, with the experimental evolution of symbiotic $Ralstonia\ solanacearum$ for a few hundred generations. In spite of major differences in terms of time span, environment, genetic background, and phenotypic achievement, both processes resulted in rapid genetic diversification dominated by purifying selection. We observe no adaptation in the plasmid carrying the genes responsible for the ecological transition. Instead, adaptation was associated with positive selection in a set of genes that led to the co-option of the same quorum-sensing system in both processes. Our results provide evidence for similarities in experimental and natural evolutionary transitions and highlight the potential of comparisons between both processes to understand symbiogenesis.
Fichier principal
Vignette du fichier
s41467-018-04778-5.pdf (876.44 Ko) Télécharger le fichier
Origin : Publication funded by an institution
Loading...

Dates and versions

cea-01880286 , version 1 (25-09-2018)

Licence

Attribution - CC BY 4.0

Identifiers

Cite

Camille Clerissi, Marie Touchon, Delphine Capela, Mingxing Tang, Stéphane Cruveiller, et al.. Parallels between experimental and natural evolution of legume symbionts. Nature Communications, 2018, 9 (1), pp.2264. ⟨10.1038/s41467-018-04778-5⟩. ⟨cea-01880286⟩
343 View
122 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More