Geographical and environmental contributions to genomic divergence in mangrove forests

dc.contributor.authorDa Silva, Michele Fernandes
dc.contributor.authorCruz, Mariana Vargas
dc.contributor.authorVidal Júnior, João De Deus
dc.contributor.authorZucchi, Maria Imaculada
dc.contributor.authorMori, Gustavo Maruyama [UNESP]
dc.contributor.authorDe Souza, Anete Pereira
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionSao Paulo Agency for Agribusiness Technology (APTA)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.description.abstractAssessing the relative importance of geographical and environmental factors to the spatial distribution of genetic variation can provide information about the processes that maintain genetic variation in natural populations. With a globally wide but very restricted habitat distribution, mangrove trees are a useful model for studies aiming to understand the contributions of these factors. Mangroves occur along the continent-ocean interface of tropical and subtropical latitudes, regions considered inhospitable to many other types of plants. Here, we used landscape genomics approaches to investigate the relative contributions of geographical and environmental variables to the genetic variation of two black mangrove species, Avicennia schaueriana and Avicennia germinans, along the South American coast. Using single nucleotide polymorphisms, our results revealed an important role of ocean currents and geographical distance in the gene flow of A. schaueriana and an isolation-by-environment pattern in the organization of the genetic diversity of A. germinans. Additionally, for A. germinans, we observed significant correlations between genetic variation with evidence of selection and the influence of precipitation regimens, solar radiation and temperature patterns. These discoveries expand our knowledge about the evolution of mangrove trees and provide important information to predict future responses of coastal species to the expected global changes during this century.en
dc.description.affiliationDepartment of Plant Biology Institute of Biology University of Campinas (UNICAMP)
dc.description.affiliationCenter for Molecular Biology and Genetic Engineering University of Campinas (UNICAMP)
dc.description.affiliationSao Paulo Agency for Agribusiness Technology (APTA)
dc.description.affiliationInstitute of Biosciences Sao Paulo State University (UNESP)
dc.description.affiliationUnespInstitute of Biosciences Sao Paulo State University (UNESP)
dc.identifier.citationBiological Journal of the Linnean Society, v. 132, n. 3, p. 573-589, 2021.
dc.relation.ispartofBiological Journal of the Linnean Society
dc.subjectadaptation of mangroves
dc.subjectcoastal ecology
dc.subjectenvironmental gradient
dc.subjectisolation by barrier
dc.subjectisolation by distance
dc.subjectmolecular ecology
dc.titleGeographical and environmental contributions to genomic divergence in mangrove forestsen