Population genomics of parallel evolution in gene expression and gene sequence during ecological adaptation
(2018) In Scientific Reports 8(1).- Abstract
Natural selection often produces parallel phenotypic changes in response to a similar adaptive challenge. However, the extent to which parallel gene expression differences and genomic divergence underlie parallel phenotypic traits and whether they are decoupled or not remains largely unexplored. We performed a population genomic study of parallel ecological adaptation among replicate ecotype pairs of the rough periwinkle (Littorina saxatilis) at a regional geographical scale (NW Spain). We show that genomic changes underlying parallel phenotypic divergence followed a complex pattern of both repeatable differences and of differences unique to specific ecotype pairs, in which parallel changes in expression or sequence are restricted to a... (More)
Natural selection often produces parallel phenotypic changes in response to a similar adaptive challenge. However, the extent to which parallel gene expression differences and genomic divergence underlie parallel phenotypic traits and whether they are decoupled or not remains largely unexplored. We performed a population genomic study of parallel ecological adaptation among replicate ecotype pairs of the rough periwinkle (Littorina saxatilis) at a regional geographical scale (NW Spain). We show that genomic changes underlying parallel phenotypic divergence followed a complex pattern of both repeatable differences and of differences unique to specific ecotype pairs, in which parallel changes in expression or sequence are restricted to a limited set of genes. Yet, the majority of divergent genes were divergent either for gene expression or coding sequence, but not for both simultaneously. Overall, our findings suggest that divergent selection significantly contributed to the process of parallel molecular differentiation among ecotype pairs, and that changes in expression and gene sequence underlying phenotypic divergence could, at least to a certain extent, be considered decoupled processes.
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- author
- Rivas, María José ; Saura, María ; Pérez-Figueroa, Andrés ; Panova, Marina ; Johansson, Tomas LU ; André, Carl ; Caballero, Armando ; Rolán-Alvarez, Emilio ; Johannesson, Kerstin and Quesada, Humberto
- organization
- publishing date
- 2018
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Scientific Reports
- volume
- 8
- issue
- 1
- article number
- 16147
- publisher
- Nature Publishing Group
- external identifiers
-
- pmid:30385764
- scopus:85055907473
- ISSN
- 2045-2322
- DOI
- 10.1038/s41598-018-33897-8
- language
- English
- LU publication?
- yes
- id
- 5d11a291-74ac-4e25-b99b-b00f03835a2e
- date added to LUP
- 2018-11-14 14:24:34
- date last changed
- 2024-03-18 19:00:29
@article{5d11a291-74ac-4e25-b99b-b00f03835a2e,
abstract = {{<p>Natural selection often produces parallel phenotypic changes in response to a similar adaptive challenge. However, the extent to which parallel gene expression differences and genomic divergence underlie parallel phenotypic traits and whether they are decoupled or not remains largely unexplored. We performed a population genomic study of parallel ecological adaptation among replicate ecotype pairs of the rough periwinkle (Littorina saxatilis) at a regional geographical scale (NW Spain). We show that genomic changes underlying parallel phenotypic divergence followed a complex pattern of both repeatable differences and of differences unique to specific ecotype pairs, in which parallel changes in expression or sequence are restricted to a limited set of genes. Yet, the majority of divergent genes were divergent either for gene expression or coding sequence, but not for both simultaneously. Overall, our findings suggest that divergent selection significantly contributed to the process of parallel molecular differentiation among ecotype pairs, and that changes in expression and gene sequence underlying phenotypic divergence could, at least to a certain extent, be considered decoupled processes.</p>}},
author = {{Rivas, María José and Saura, María and Pérez-Figueroa, Andrés and Panova, Marina and Johansson, Tomas and André, Carl and Caballero, Armando and Rolán-Alvarez, Emilio and Johannesson, Kerstin and Quesada, Humberto}},
issn = {{2045-2322}},
language = {{eng}},
number = {{1}},
publisher = {{Nature Publishing Group}},
series = {{Scientific Reports}},
title = {{Population genomics of parallel evolution in gene expression and gene sequence during ecological adaptation}},
url = {{http://dx.doi.org/10.1038/s41598-018-33897-8}},
doi = {{10.1038/s41598-018-33897-8}},
volume = {{8}},
year = {{2018}},
}