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

cg.authorship.typesCGIAR and advanced research instituteen
cg.contributor.affiliationZhejiang Universityen
cg.contributor.affiliationSalzburg Universityen
cg.contributor.affiliationZhejiang Academy of Forestryen
cg.contributor.affiliationBioversity Internationalen
cg.contributor.affiliationChinese Academy of Sciencesen
cg.coverage.countryChina
cg.coverage.iso3166-alpha2CN
cg.coverage.regionAsia
cg.creator.identifierChris Kettle: 0000-0002-9476-0136en
cg.creator.identifierRiina Jalonen: 0000-0003-1669-9138en
cg.creator.identifierHannes Gaisberger: 0000-0002-6023-1236en
cg.identifier.doihttps://doi.org/10.1111/tpj.16675en
cg.isijournalISI Journalen
cg.issn0960-7412en
cg.issue5en
cg.journalPlant Journalen
cg.reviewStatusPeer Reviewen
cg.subject.alliancebiovciatGENETIC RESOURCESen
cg.subject.impactAreaClimate adaptation and mitigation
cg.volume118en
dc.contributor.authorXu, Wu-Qinen
dc.contributor.authorRen, Chao-Qianen
dc.contributor.authorZhang, Xin-Yien
dc.contributor.authorComes, Hans-Peteren
dc.contributor.authorLiu, Xin-Hongen
dc.contributor.authorLi, Yin-Gangen
dc.contributor.authorKettle, Christopher J.en
dc.contributor.authorJalonen, Riinaen
dc.contributor.authorGaisberger, Hannesen
dc.contributor.authorMa, Ya-Zhenen
dc.contributor.authorQiu, Ying-Xiongen
dc.date.accessioned2024-02-15T10:03:44Zen
dc.date.available2024-02-15T10:03:44Zen
dc.identifier.urihttps://hdl.handle.net/10568/139419
dc.titleGenome sequences and population genomics reveal climatic adaptation and genomic divergence between two closely related sweetgum speciesen
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
dcterms.accessRightsLimited Access
dcterms.audienceScientistsen
dcterms.available2024-02-11en
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
dcterms.extentpp. 1372-1387en
dcterms.issued2024-02-11en
dcterms.languageen
dcterms.licenseCopyrighted; all rights reserved
dcterms.publisherWileyen
dcterms.subjectgenomicsen
dcterms.subjectclimate change adaptationen
dcterms.subjectspeciationen
dcterms.subjectdivergent selectionen
dcterms.subjectliquidambaren
dcterms.typeJournal Article

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