Molecular responses to freshwater limitation in the mangrove tree Avicennia germinans (Acanthaceae)

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dc.contributor.authorCruz, Mariana Vargas
dc.contributor.authorMori, Gustavo Maruyama [UNESP]
dc.contributor.authorOh, Dong-Ha
dc.contributor.authorDassanayake, Maheshi
dc.contributor.authorZucchi, Maria Imaculada
dc.contributor.authorOliveira, Rafael Silva
dc.contributor.authorSouza, Anete Pereira de
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionLouisiana
dc.contributor.institutionSão Paulo Agency for Agribusiness Technology (APTA)
dc.date.accessioned2020-12-12T01:12:01Z
dc.date.available2020-12-12T01:12:01Z
dc.date.issued2020-01-01
dc.description.abstractEnvironmental variation along the geographical space can shape populations by natural selection. In the context of global warming and changing precipitation regimes, it is crucial to understand the role of environmental heterogeneity in tropical trees adaptation, given their disproportional contribution to water and carbon biogeochemical cycles. Here, we investigated how heterogeneity in freshwater availability along tropical wetlands has influenced molecular variations of the black mangrove (Avicennia germinans). A total of 57 trees were sampled at seven sites differing markedly in precipitation regime and riverine freshwater inputs. Using 2,297 genome-wide single nucleotide polymorphic markers, we found signatures of natural selection by the association between variations in allele frequencies and environmental variables, including the precipitation of the warmest quarter and the annual precipitation. Additionally, we found candidate loci for selection based on statistical deviations from neutral expectations of interpopulation differentiation. Most candidate loci within transcribed sequences were functionally associated with central aspects of drought tolerance or plant response to drought. Moreover, our results suggest the occurrence of the rapid evolution of a population, probably in response to sudden and persistent limitations in plant access to soil water, following a road construction in 1974. Observations supporting rapid evolution included the reduction in tree size and changes in allele frequencies and in transcript expression associated with increased drought tolerance through the accumulation of osmoprotectants and antioxidants, biosynthesis of cuticles, protection against protein degradation, stomatal closure, photorespiration and photosynthesis. We describe a major role of spatial heterogeneity in freshwater availability in the specialization of this typically tropical tree.en
dc.description.affiliationDepartment of Plant Biology Institute of Biology University of Campinas (Unicamp)
dc.description.affiliationInstitute of Biosciences São Paulo State University (Unesp)
dc.description.affiliationDepartment of Biological Sciences Louisiana State University (LSU) Louisiana
dc.description.affiliationSão Paulo Agency for Agribusiness Technology (APTA)
dc.description.affiliationUnespInstitute of Biosciences São Paulo State University (Unesp)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipCenter for Hierarchical Manufacturing, National Science Foundation
dc.description.sponsorshipNational Academy of Sciences, Republic of Korea
dc.description.sponsorshipIdFAPESP: 2011/52072-0
dc.description.sponsorshipIdFAPESP: 2013/08086-1
dc.description.sponsorshipIdFAPESP: 2013/26793-7
dc.description.sponsorshipIdFAPESP: 2014/22821-9
dc.description.sponsorshipIdCNPq: 309661/2014-5
dc.description.sponsorshipIdCNPq: 448286/2014-9
dc.description.sponsorshipIdCAPES: 88882.160095/2013-01
dc.description.sponsorshipIdCAPES: 88887.177158/2018-00
dc.description.sponsorshipIdCAPES: 99999.008084/2015-07
dc.description.sponsorshipIdCenter for Hierarchical Manufacturing, National Science Foundation: MCB 1616827
dc.description.sponsorshipIdNational Academy of Sciences, Republic of Korea: PJ01317301
dc.format.extent344-362
dc.identifierhttp://dx.doi.org/10.1111/mec.15330
dc.identifier.citationMolecular Ecology, v. 29, n. 2, p. 344-362, 2020.
dc.identifier.doi10.1111/mec.15330
dc.identifier.issn1365-294X
dc.identifier.issn0962-1083
dc.identifier.scopus2-s2.0-85077903696
dc.identifier.urihttp://hdl.handle.net/11449/198407
dc.language.isoeng
dc.relation.ispartofMolecular Ecology
dc.sourceScopus
dc.subjectAvicennia germinans (Black Mangrove)
dc.subjectdrought-tolerance
dc.subjectecological genomics
dc.subjectnextRAD
dc.subjectRNA-Seq
dc.subjecttropical tree
dc.titleMolecular responses to freshwater limitation in the mangrove tree Avicennia germinans (Acanthaceae)en
dc.typeArtigo
unesp.author.orcid0000-0001-8569-2234[1]
unesp.author.orcid0000-0003-2308-2224[2]
unesp.author.orcid0000-0003-1526-9814[3]
unesp.author.orcid0000-0003-3123-3731[4]
unesp.author.orcid0000-0002-4863-1843[5]
unesp.author.orcid0000-0002-6392-2526[6]
unesp.author.orcid0000-0003-3831-9829[7]

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