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European traditional tomatoes galore: a result of farmers' selection of a few diversity-rich loci

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European traditional tomatoes galore: a result of farmers' selection of a few diversity-rich loci

dc.contributor.author	Montero Pau, Javier
dc.contributor.author	Blanca, José
dc.contributor.author	Pons,Clara
dc.contributor.author	Díez, María José
dc.contributor.author	Sanchez-Matarredona, David
dc.contributor.author	Ziarsolo, Peio
dc.contributor.author	Cañizares, Joaquín
dc.contributor.author	Monforte, Antonio J
dc.contributor.author	Rambla, Jose Luis
dc.contributor.author	Casals, Joan
dc.date.accessioned	2023-05-17T10:56:59Z
dc.date.available	2023-05-17T10:56:59Z
dc.date.issued	2022
dc.identifier.citation	Montero Pau, Javier Blanca, José Pons,Clara Díez, María José Sanchez-Matarredona, David Ziarsolo, Peio Cañizares, Joaquín Monforte, Antonio J Rambla, Jose Luis Casals, Joan 2022 European traditional tomatoes galore: a result of farmers' selection of a few diversity-rich loci Journal of Experimental Botany 73 11 3431 3445
dc.identifier.uri	https://hdl.handle.net/10550/86665
dc.description.abstract	A comprehensive collection of 1254 tomato accessions, corresponding to European traditional and modern varieties, early domesticated varieties, and wild relatives, was analyzed by genotyping by sequencing. A continuous genetic gradient between the traditional and modern varieties was observed. European traditional tomatoes displayed very low genetic diversity, with only 298 polymorphic loci (95% threshold) out of 64 943 total variants. European traditional tomatoes could be classified into several genetic groups. Two main clusters consisting of Spanish and Italian accessions showed higher genetic diversity than the remaining varieties, suggesting that these regions might be independent secondary centers of diversity with a different history. Other varieties seem to be the result of a more recent complex pattern of migrations and hybridizations among the European regions. Several polymorphic loci were associated in a genome-wide association study with fruit morphological traits in the European traditional collection. The corresponding alleles were found to contribute to the distinctive phenotypic characteristic of the genetic varietal groups. The few highly polymorphic loci associated with morphological traits in an otherwise a low-diversity population suggests a history of balancing selection, in which tomato farmers likely maintained the morphological variation by inadvertently applying a high selective pressure within different varietal types.
dc.language.iso	eng
dc.relation.ispartof	Journal of Experimental Botany, 2022, vol. 73, num. 11, p. 3431-3445
dc.subject	Ecologia
dc.subject	Microbiologia
dc.title	European traditional tomatoes galore: a result of farmers' selection of a few diversity-rich loci
dc.type	journal article
dc.date.updated	2023-05-17T10:56:59Z
dc.identifier.doi	10.1093/jxb/erac072
dc.identifier.idgrec	158666
dc.rights.accessRights	open access