Genomic signals of adaptation to a natural CO 2 gradient over a striking microgeographic scale.

Autor: González-Delgado S; Departamento de Biología Animal, Edafología y Geología, Universidad de La Laguna (ULL), Av. Astrofisico Francisco Sánchez, S/N, 38206, Canary Islands, Spain. Electronic address: sgonzald@ull.edu.es., Pérez-Portela R; Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Facultat de Biologia, Universitat de Barcelona (UB), Av. Diagonal 643, Barcelona 08028, Spain; Institut de Recerca de la Biodiversitat (IRBio), Universitat de Barcelona (UB), Barcelona, Spain. Electronic address: rocio_perez@ub.edu., Ortega-Martínez O; Tjärnö Marine Laboratory, Department of Marine Sciences, University of Gothenburg, Sweden. Electronic address: olga.ortega-martinez@marine.gu.se., Alfonso B; Departamento de Biología Animal, Edafología y Geología, Universidad de La Laguna (ULL), Av. Astrofisico Francisco Sánchez, S/N, 38206, Canary Islands, Spain. Electronic address: balfonso@ull.edu.es., Pereyra RT; Tjärnö Marine Laboratory, Department of Marine Sciences, University of Gothenburg, Sweden. Electronic address: ricardo.pereyra@marine.gu.se., Hernández JC; Departamento de Biología Animal, Edafología y Geología, Universidad de La Laguna (ULL), Av. Astrofisico Francisco Sánchez, S/N, 38206, Canary Islands, Spain. Electronic address: Jocarher@ull.edu.es.
Jazyk: angličtina
Zdroj: Marine pollution bulletin [Mar Pollut Bull] 2024 Dec; Vol. 209 (Pt B), pp. 117225. Date of Electronic Publication: 2024 Nov 07.
DOI: 10.1016/j.marpolbul.2024.117225
Abstrakt: Our study explores genomic signs of adaptation in A. lixula to different water pH conditions. To achieve this, we analysed the genomics variation of A. lixula individuals living across a natural pH gradient in Canary Islands, Spain. We use a 2b-RADseq protocol with 74 samples from sites with varying pH levels (from 7.3 to 7.9 during low tide) and included a control site. We identified 14,883 SNPs, with 432 identified as candidate SNPs under selection to pH variations through redundancy analysis. While all SNPs indicated genomic homogeneity, the 432 candidate SNPs under selection displayed genomic differences among sites and along the pH gradient. Out of these 432 loci, 17 were annotated using published A. lixula transcriptomes, involved in biological functions such as growth. Therefore, our findings suggest local adaptation in A. lixula populations to acidification in CO 2 vents, even over short distances of 75 m, underscoring their potential resistance to future Ocean Acidification.
Competing Interests: Declaration of competing interest The author(s) declare no competing interests.
(Copyright © 2024 The Author(s). Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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