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Forest genomics in the Caucasus through the lens of its dominant tree species – Fagus orientalis

cris.lastimport.scopus2025-10-23T06:57:52Z
cris.virtual.author-orcid0000-0001-7017-5541
cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcid6ec8c968-521f-4d99-bbd3-724dedc7c282
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
dc.abstract.enThe last glacial period is known to have greatly influenced the demographic history of temperate forest trees, with important range contractions and post-glacial expansions that led to the formation of multiple genetic lineages and secondary contact zones in the Northern Hemisphere. These dynamics have been extensively studied for European and North American species but are still poorly understood in other temperate regions of rich biodiversity such as the Caucasus. Our study helps filling that gap by deciphering the genomic landscapes of F. orientalis across the South Caucasus. The use of genome-wide data confirmed a past demographic history strongly influenced by the Last Glacial Maximum, revealing two disjunct glacial refugia in the Colchis and Hyrcanian regions. The resulting patterns of genetic diversity, load and differentiation are not always concordant across the region, with genetic load pinpointing the location of the glacial refugia more efficiently than genetic diversity alone. The Hyrcanian forests show depleted genetic diversity and substantial isolation, even if long-distance gene flow is still present with the main centre of diversity in the Greater Caucasus. Finally, we characterize a strong heterogeneity of genetic diversity and differentiation along the species chromosomes, with noticeably a first chromosome showing low diversity and weak differentiation.
dc.affiliationWydział Leśny i Technologii Drewna
dc.affiliation.instituteKatedra Hodowli Lasu
dc.contributor.authorCapblancq, Thibaut
dc.contributor.authorSękiewicz, Katarzyna
dc.contributor.authorDering, Monika
dc.date.access2025-10-07
dc.date.accessioned2025-10-07T05:40:00Z
dc.date.available2025-10-07T05:40:00Z
dc.date.copyright2024-07-17
dc.date.issued2024
dc.description.abstract<jats:title>Abstract</jats:title><jats:p>The last glacial period is known to have greatly influenced the demographic history of temperate forest trees, with important range contractions and post‐glacial expansions that led to the formation of multiple genetic lineages and secondary contact zones in the Northern Hemisphere. These dynamics have been extensively studied for European and North American species but are still poorly understood in other temperate regions of rich biodiversity such as the Caucasus. Our study helps filling that gap by deciphering the genomic landscapes of <jats:italic>F. orientalis</jats:italic> across the South Caucasus. The use of genome‐wide data confirmed a past demographic history strongly influenced by the Last Glacial Maximum, revealing two disjunct glacial refugia in the Colchis and Hyrcanian regions. The resulting patterns of genetic diversity, load and differentiation are not always concordant across the region, with genetic load pinpointing the location of the glacial refugia more efficiently than genetic diversity alone. The Hyrcanian forests show depleted genetic diversity and substantial isolation, even if long‐distance gene flow is still present with the main centre of diversity in the Greater Caucasus. Finally, we characterize a strong heterogeneity of genetic diversity and differentiation along the species chromosomes, with noticeably a first chromosome showing low diversity and weak differentiation.</jats:p>
dc.description.accesstimeat_publication
dc.description.bibliographyil., bibliogr.
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.description.if3,9
dc.description.number16
dc.description.points140
dc.description.versionfinal_published
dc.description.volume33
dc.identifier.doi10.1111/mec.17475
dc.identifier.eissn1365-294X
dc.identifier.issn0962-1083
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/5211
dc.identifier.weblinkhttps://onlinelibrary.wiley.com/doi/10.1111/mec.17475
dc.languageen
dc.pbn.affiliationforestry
dc.relation.ispartofMolecular Ecology
dc.relation.pagese17475
dc.rightsCC-BY
dc.sciencecloudnosend
dc.share.typeOTHER
dc.titleForest genomics in the Caucasus through the lens of its dominant tree species – Fagus orientalis
dc.typeJournalArticle
dspace.entity.typePublication
oaire.citation.issue16
oaire.citation.volume33