European traditional tomatoes galore: a result of farmers' selection of a few diversity-rich loci.
Crop evolution
diversification
fruit morphology
genome-wide association study
genotyping by sequencing
selection
single nucleotide polymorphism
Journal
Journal of experimental botany
ISSN: 1460-2431
Titre abrégé: J Exp Bot
Pays: England
ID NLM: 9882906
Informations de publication
Date de publication:
02 06 2022
02 06 2022
Historique:
received:
08
07
2022
accepted:
21
02
2022
pubmed:
1
4
2022
medline:
7
6
2022
entrez:
31
3
2022
Statut:
ppublish
Résumé
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.
Identifiants
pubmed: 35358313
pii: 6561782
doi: 10.1093/jxb/erac072
pmc: PMC9162183
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
3431-3445Subventions
Organisme : TRADITOM
ID : 634561
Organisme : HARNESSTOM
ID : 101000716
Organisme : Spanish Ministerio de Ciencia e Innovación
ID : IJC2019-039091-I/AEI/10.13039/501100011033
Commentaires et corrections
Type : ErratumIn
Informations de copyright
© The Author(s) 2022. Published by Oxford University Press on behalf of the Society for Experimental Biology.
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