57787 20200221144345.0 doi 10.1038/srep36283 sideral 97059 ART-2016-97059 eng (orcid)0000-0001-6952-5655 Marques, I. Universidad de Zaragoza Past climate changes facilitated homoploid speciation in three mountain spiny fescues (Festuca, Poaceae) 2016 Access copy available to the general public Unrestricted Apart from the overwhelming cases of allopolyploidization, the impact of speciation through homoploid hybridization is becoming more relevant than previously thought. Much less is known, however, about the impact of climate changes as a driven factor of speciation. To investigate these issues, we selected Festuca picoeuropeana, an hypothetical natural hybrid between the diploid species F. eskia and F. gautieri that occurs in two different mountain ranges (Cantabrian Mountains and Pyrenees) separated by more than 400 km. To unravel the outcomes of this mode of speciation and the impact of climate during speciation we used a multidisciplinary approach combining genome size and chromosome counts, data from an extensive nuclear genotypic analysis, plastid sequences and ecological niche models (ENM). Our results show that the same homoploid hybrid was originated independently in the two mountain ranges, being currently isolated from both parents and producing viable seeds. Parental species had the opportunity to contact as early as 21000 years ago although niche divergence occurs nowadays as result of a climate-driven shift. A high degree of niche divergence was observed between the hybrid and its parents and no recent introgression or backcrossed hybrids were detected, supporting the current presence of reproductive isolation barriers between these species. info:eu-repo/grantAgreement/EC/FP7/301257/EU/The model plant system Trithuria (Hydatellaceae), a new window into the origin of flowering plants and gene function/ORIGIN info:eu-repo/grantAgreement/ES/DGA/GA-LC-012-2008 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 4.259 2016 MULTIDISCIPLINARY SCIENCES 10 / 63 = 0.159 2016 Q1 T1 1.691 2016 Multidisciplinary 2016 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Draper, D. López-Herranz, M.L. Garnatje, T. Segarra-Moragues, J. (orcid)0000-0001-7793-5259 Catalán, P. Universidad de Zaragoza 2008 640 Universidad de Zaragoza Dpto. Produc.Animal Cienc.Ali. Área Nutrición Bromatología 5011 063 Universidad de Zaragoza Dpto. CC.Agrar.y Medio Natural Área Botánica 6 (2016), 36283 [11 pp] Sci. rep. SCIENTIFIC REPORTS 2045-2322 2689519 http://zaguan.unizar.es/record/57787/files/texto_completo.pdf Versión publicada 107441 http://zaguan.unizar.es/record/57787/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:57787 articulos driver 2020-02-21-13:52:13 ARTICLE