Genome sequences and population genomics reveal climatic adaptation and genomic divergence between two closely related sweetgum species

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cg.authorship.typesCGIAR and advanced research instituteen_US
cg.contributor.affiliationZhejiang Universityen_US
cg.contributor.affiliationSalzburg Universityen_US
cg.contributor.affiliationZhejiang Academy of Forestryen_US
cg.contributor.affiliationBioversity Internationalen_US
cg.contributor.affiliationChinese Academy of Sciencesen_US
cg.coverage.countryChinaen_US
cg.coverage.iso3166-alpha2CNen_US
cg.coverage.regionAsiaen_US
cg.creator.identifierChris Kettle: 0000-0002-9476-0136en_US
cg.creator.identifierRiina Jalonen: 0000-0003-1669-9138en_US
cg.creator.identifierHannes Gaisberger: 0000-0002-6023-1236en_US
cg.identifier.doihttps://doi.org/10.1111/tpj.16675en_US
cg.isijournalISI Journalen_US
cg.issn0960-7412en_US
cg.issue5en_US
cg.journalPlant Journalen_US
cg.reviewStatusPeer Reviewen_US
cg.subject.alliancebiovciatGENETIC RESOURCESen_US
cg.subject.impactAreaClimate adaptation and mitigationen_US
cg.volume118en_US
dc.contributor.authorXu, Wu-Qinen_US
dc.contributor.authorRen, Chao-Qianen_US
dc.contributor.authorZhang, Xin-Yien_US
dc.contributor.authorComes, Hans-Peteren_US
dc.contributor.authorLiu, Xin-Hongen_US
dc.contributor.authorLi, Yin-Gangen_US
dc.contributor.authorKettle, Christopher J.en_US
dc.contributor.authorJalonen, Riinaen_US
dc.contributor.authorGaisberger, Hannesen_US
dc.contributor.authorMa, Ya-Zhenen_US
dc.contributor.authorQiu, Ying-Xiongen_US
dc.date.accessioned2024-02-15T10:03:44Zen_US
dc.date.available2024-02-15T10:03:44Zen_US
dc.identifier.urihttps://hdl.handle.net/10568/139419en_US
dc.titleGenome sequences and population genomics reveal climatic adaptation and genomic divergence between two closely related sweetgum speciesen_US
dcterms.abstractUnderstanding the genetic basis of population divergence and adaptation is an important goal in population genetics and evolutionary biology. However, the relative roles of demographic history, gene flow, and/or selective regime in driving genomic divergence, climatic adaptation, and speciation in non-model tree species are not yet fully understood. To address this issue, we generated whole-genome resequencing data of Liquidambar formosana and L. acalycina, which are broadly sympatric but altitudinally segregated in theTertiary relict forests of subtropical China. We integrated genomic and environmental data to investigate the demographic history, genomic divergence, and climatic adaptation of these two sister species. We inferred a scenario of allopatric species divergence during the late Miocene, followed by secondary contact during the Holocene. We identified multiple genomic islands of elevated divergence that mainly evolved through divergence hitchhiking and recombination rate variation, likely fostered by long-term refugial isolation and recent differential introgression in low-recombination genomic regions. We also found some candidate genes with divergent selection signatures potentially involved in climatic adaptation and reproductive isolation. Our results contribute to a better understanding of how late Tertiary/Quaternary climatic change influenced speciation, genomic divergence, climatic adaptation, and introgressive hybridization in East Asia’s Tertiary relict flora. In addition, they should facilitate future evolutionary, conservation genomics, and molecular breeding studies in Liquidambar, a genus of important medicinal and ornamental values.en_US
dcterms.accessRightsLimited Accessen_US
dcterms.audienceScientistsen_US
dcterms.available2024-02-11en_US
dcterms.bibliographicCitationXu, W.; Ren, C.; Zhang, X.; Comes, H.; Liu, X.; Li, Y.; Kettle, C.J.; Jalonen, R.; Gaisberger, H.; Ma, Y.; Qiu, Y. (2024) Genome sequences and population genomics reveal climatic adaptation and genomic divergence between two closely related sweetgum species. Plant Journal , Online first paper (2024-02-11). ISSN: 0960-7412en_US
dcterms.extentpp. 1372-1387en_US
dcterms.issued2024-02-11en_US
dcterms.languageenen_US
dcterms.licenseCopyrighted; all rights reserveden_US
dcterms.publisherWileyen_US
dcterms.subjectgenomicsen_US
dcterms.subjectclimate change adaptationen_US
dcterms.subjectspeciationen_US
dcterms.subjectdivergent selectionen_US
dcterms.subjectliquidambaren_US
dcterms.typeJournal Articleen_US

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