|Title||Atlas of phenotypic, genotypic and geographical diversity present in the European traditional tomato|
|Publication Type||Articolo su Rivista peer-reviewed|
|Year of Publication||2022|
|Authors||Pons, Clara, Casals Joan, Palombieri Samuela, Fontanet Lilian, Riccini Alessandro, Rambla Jose Luis, Ruggiero Alessandra, Figás Mariadel Rosario, Plazas Mariola, Koukounaras Athanasios, Picarella Maurizio E., Sulli Maria, Fisher Josef, Ziarsolo Peio, Blanca Jose, Cañizares Joaquin, Cammareri Maria, Vitiello Antonella, Batelli Giorgia, Kanellis Angelos, Brouwer Matthijs, Finkers Richard, Nikoloudis Konstantinos, Soler Salvador, Giuliano Giovanni, Grillo Stephania, Grandillo Silvana, Zamir Dani, Mazzucato Andrea, Causse Mathilde, Díez Maria José, Prohens Jaime, Monforte Antonio Jose, and Granell Antonio|
The Mediterranean basin countries are considered secondary centres of tomato diversification. However, information on phenotypic and allelic variation of local tomato materials is still limited. Here we report on the evaluation of the largest traditional tomato collection, which includes 1499 accessions from Southern Europe. Analyses of 70 traits revealed a broad range of phenotypic variability with different distributions among countries, with the culinary end use within each country being the main driver of tomato diversification. Furthermore, eight main tomato types (phenoclusters) were defined by integrating phenotypic data, country of origin, and end use. Genome-wide association study (GWAS) meta-analyses identified associations in 211 loci, 159 of which were novel. The multidimensional integration of phenoclusters and the GWAS meta-analysis identified the molecular signatures for each traditional tomato type and indicated that signatures originated from differential combinations of loci, which in some cases converged in the same tomato phenotype. Our results provide a roadmap for studying and exploiting this untapped tomato diversity. © 2022 The Author(s). Published by Oxford University Press on behalf of Nanjing Agricultural University.
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