The evolutionary history of the common bean (Phaseolus vulgaris) revealed by chloroplast and nuclear genomes analysis.

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Tác giả: Elisa Bellucci, Andrea Benazzo, Elena Bitocchi, Donata Cafasso, Gaia Cortinovis, Salvatore Cozzolino, Nunzio D'Agostino, Massimo Delledonne, Valerio Di Vittori, Giulia Frascarelli, Teresa R Galise, Laura Nanni, Roberto Papa, Alice Pieri, Marzia Rossato, Francesca Sparvoli, Leonardo Vincenzi

Ngôn ngữ: eng

Ký hiệu phân loại:

Thông tin xuất bản: Germany : TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik , 2025

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 463868

The origin of common bean was investigated throughout chloroplast and nuclear WGS data considering recombination events. Our results support the Mesoamerican origin of common bean. The remarkable evolutionary history of the common bean (Phaseolus vulgaris L.) has led to the emergence of three wild main gene pools corresponding to three different eco-geographical areas: Mesoamerica, the Andes and northern Peru/Ecuador. Recent works proposed novel scenarios, and the northern Peru/Ecuador population has been described as a new species called P. debouckii, rekindling the debate about the origin of P. vulgaris. Here we shed light on the origin of P. vulgaris by analyzing the chloroplast and nuclear genomes of a large varietal collection representing the entire geographical distribution of wild forms including a large collection of Mesoamerican and Andean individuals. We assembled 37 chloroplast genomes de novo and used them to construct a time frame for the divergence of the genotypes under investigation, revealing that the separation of the Mesoamerican and northern Peru/Ecuador gene pools occurred ~ 0.15 Mya. Our results clearly support a Mesoamerican origin of the common bean and reject the recent P. deboukii hypothesis. These results also imply two independent migratory events from Mesoamerica to the North and South Andes, probably facilitated by birds. Our work represents a paradigmatic example of the importance of taking into account the genetic rearrangements produced by recombination when investigating phylogeny and of the analysis of wild forms when studying the evolutionary history of a crop species.
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