000130152 001__ 130152
000130152 005__ 20241125101200.0
000130152 0247_ $$2doi$$a10.1093/aob/mcad018
000130152 0248_ $$2sideral$$a134922
000130152 037__ $$aART-2023-134922
000130152 041__ $$aeng
000130152 100__ $$aCampos, Miguel$$uUniversidad de Zaragoza
000130152 245__ $$aGenomic, spatial and morphometric data for discrimination of four species in the Mediterranean Tamus clade of yams (Dioscorea, Dioscoreaceae)
000130152 260__ $$c2023
000130152 5060_ $$aAccess copy available to the general public$$fUnrestricted
000130152 5203_ $$aBackground and Aims: Among the numerous pantropical species of the yam genus, Dioscorea, only a small group occurs in the Mediterranean basin, including two narrow Pyrenean endemics (Borderea clade) and two Mediterranean-wide species (D. communis and D. orientalis, Tamus clade). However, several currently unrecognized species and infraspecific taxa have been described in the Tamus clade due to significant morphological variation associated with D. communis. Our overarching aim was to investigate taxon delimitation in the Tamus clade using an integrative approach combining phylogenomic, spatial and morphological data.
Methods: We analysed 76 herbarium samples using Hyb-Seq genomic capture to sequence 260 low-copy nuclear genes and plastomes, together with morphometric and environmental modelling approaches.
Key Results: Phylogenomic reconstructions confirmed that the two previously accepted species of the Tamus clade, D. communis and D. orientalis, are monophyletic and form sister clades. Three subclades showing distinctive geographic patterns were identified within D. communis. These subclades were also identifiable from morphometric and climatic data, and introgression patterns were inferred between subclades in the eastern part of the distribution of D. communis.
Conclusions: We propose a taxonomy that maintains D. orientalis, endemic to the eastern Mediterranean region, and splits D. communis sensu lato into three species: D. edulis, endemic to Macaronesia (Canary Islands and Madeira); D. cretica, endemic to the eastern Mediterranean region; and D. communis sensu stricto, widespread across western and central Europe. Introgression inferred between D. communis s.s. and D. cretica is likely to be explained by their relatively recent speciation at the end of the Miocene, disjunct isolation in eastern and western Mediterranean glacial refugia and a subsequent westward recolonization of D. communis s.s. Our study shows that the use of integrated genomic, spatial and morphological approaches allows a more robust definition of species boundaries and the identification of species that previous systematic studies failed to uncover.
000130152 536__ $$9info:eu-repo/grantAgreement/ES/DGA/Bioflora
000130152 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000130152 590__ $$a3.6$$b2023
000130152 592__ $$a1.078$$b2023
000130152 591__ $$aPLANT SCIENCES$$b56 / 265 = 0.211$$c2023$$dQ1$$eT1
000130152 593__ $$aPlant Science$$c2023$$dQ1
000130152 594__ $$a7.9$$b2023
000130152 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000130152 700__ $$aKelley, Emma
000130152 700__ $$aGravendeel, Barbara
000130152 700__ $$aMédail, Frédéric
000130152 700__ $$aMaarten Christenhusz, J M
000130152 700__ $$aFay, Michael F
000130152 700__ $$0(orcid)0000-0001-7793-5259$$aCatalán, Pilar$$uUniversidad de Zaragoza
000130152 700__ $$aLeitch, Ilia J
000130152 700__ $$aForest, Félix
000130152 700__ $$aWilkin, Paul
000130152 700__ $$aViruel, Juan
000130152 7102_ $$15011$$2063$$aUniversidad de Zaragoza$$bDpto. CC.Agrar.y Medio Natural$$cÁrea Botánica
000130152 773__ $$g131, 4 (2023), 635-654$$pAnn. bot.$$tAnnals of botany$$x0305-7364
000130152 8564_ $$s917958$$uhttps://zaguan.unizar.es/record/130152/files/texto_completo.pdf$$yPostprint
000130152 8564_ $$s3465895$$uhttps://zaguan.unizar.es/record/130152/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000130152 909CO $$ooai:zaguan.unizar.es:130152$$particulos$$pdriver
000130152 951__ $$a2024-11-22-12:11:15
000130152 980__ $$aARTICLE