Analysis of >3400 worldwide eggplant accessions reveals two independent domestication events and multiple migration-diversification routes

Lorenzo Barchi*, Giuseppe Aprea, Timothy Rabanus-Wallace, Laura Toppino, David Alonso, Ezio Portis, Sergio Lanteri, Luciana Gaccione, Emmanuel Omondi, Maarten van Zonneveld, Roland Schafleitner, Paola Ferrante, Andreas Börner, Nils Stein, Maria José Díez, Veronique Lefebvre, Jérémy Salinier, Hatice Filiz Boyaci, Richard Finkers, Matthijs BrouwerArnaud G. Bovy, Giuseppe Leonardo Rotino, Jaime Prohens, Giovanni Giuliano*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Eggplant (Solanum melongena) is an important Solanaceous crop, widely cultivated and consumed in Asia, the Mediterranean basin, and Southeast Europe. Its domestication centers and migration and diversification routes are still a matter of debate. We report the largest georeferenced and genotyped collection to this date for eggplant and its wild relatives, consisting of 3499 accessions from seven worldwide genebanks, originating from 105 countries in five continents. The combination of genotypic and passport data points to the existence of at least two main centers of domestication, in Southeast Asia and the Indian subcontinent, with limited genetic exchange between them. The wild and weedy eggplant ancestor S. insanum shows admixture with domesticated S. melongena, similar to what was described for other fruit-bearing Solanaceous crops such as tomato and pepper and their wild ancestors. After domestication, migration and admixture of eggplant populations from different regions have been less conspicuous with respect to tomato and pepper, thus better preserving ‘local’ phenotypic characteristics. The data allowed the identification of misclassified and putatively duplicated accessions, facilitating genebank management. All the genetic, phenotypic, and passport data have been deposited in the Open Access G2P-SOL database, and constitute an invaluable resource for understanding the domestication, migration and diversification of this cosmopolitan vegetable.

Original languageEnglish
Pages (from-to)1667-1680
JournalPlant Journal
Volume116
Issue number6
Early online date8 Sept 2023
DOIs
Publication statusPublished - Dec 2023

Keywords

  • domestication
  • passport data
  • single nucleotide polymorphism
  • Single Primer Enrichment Technology
  • Solanum melongena

Fingerprint

Dive into the research topics of 'Analysis of >3400 worldwide eggplant accessions reveals two independent domestication events and multiple migration-diversification routes'. Together they form a unique fingerprint.

Cite this