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IVES 9 IVES Conference Series 9 Tracking the origin of Tempranillo Tinto through whole genome resequencing and high-throughput genotyping  

Tracking the origin of Tempranillo Tinto through whole genome resequencing and high-throughput genotyping  

Abstract

Grapevine cultivars are vegetatively propagated to maintain their varietal characteristics. This process of multiplication leads to spontaneous somatic mutations that can eventually generate a variant phenotype, of potential interest for cultivar improvement and innovation. However, regardless their phenotypic effect, somatic mutations stack in the genome, and they can be used to reveal the origin and dissemination history of ancient cultivars. Here, a stringent somatic variant calling over whole genome resequencing data from 35 ‘Tempranillo Tinto’ clones or old vines from seven Iberian winemaking regions revealed 135 single nucleotide variations (SNVs) shared by some of the clonal lines. Among them, we selected 56 highly informative SNVs to custom-design a high-throughput genotyping chip for this cultivar, which was validated and further tested in 94 ‘Tempranillo Tinto’ vines from highly diverse regions. Phylogenetic analyses revealed that ‘Tempranillo Tinto’ samples grouped in three major clonal lineages, a clustering that reflected the geographic origin of the samples. After combining these results with genome re-sequencing data from the two ‘Tempranillo Tinto’ parents, we found the Ebro River Valley as the most likely region of origin for ‘Tempranillo Tinto’. Results also revealed one major historical dissemination route that likely progressed westwards from this original site, towards the main winemaking regions found across the Duero River Valley and to the South in Portugal. Collectively, the results obtained in this study shed light on the origin and historical dispersal of ‘Tempranillo Tinto’ in the Iberian Peninsula, and released highly informative SNVs for the differentiation of intra-cultivar lineages.

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DOI:

Publication date: June 14, 2024

Issue: Open GPB 2024

Type: Poster

Authors

Javier Tello1*, Pablo Carbonell-Bejerano1, Rafael Torres-Pérez2, Yolanda Ferradás1,3, Carolina Royo1, Juan Carlos Oliveros2, Javier Ibáñez1, José Miguel Martínez-Zapater1

1 Instituto de Ciencias de la Vid y del Vino, Finca La Grajera, Ctra. de Burgos Km. 6, 26007 Logroño.
2 Centro Nacional de Biotecnología, C/Darwin 3, 28049 Madrid.
3 Current address: Facultad de Biología, Universidad de Santiago de Compostela, 15872 Santiago de Compostela

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Keywords

clonal lineage, grapevine, Iberian Peninsula, phylogenomics, SNV

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

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