Mesoamerican origin of the common bean (Phaseolus vulgaris L.) is revealed by sequence data

TY - JOUR

T1 - Mesoamerican origin of the common bean (Phaseolus vulgaris L.) is revealed by sequence data

AU - Bitocchi, Elena

AU - Nanni, Laura

AU - Bellucci, Elisa

AU - Rossi, Monica

AU - Giardini, Alessandro

AU - Zeuli, Pierluigi Spagnoletti

AU - Logozzo, Giuseppina

AU - Stougaard, Jens

AU - McClean, Phillip

AU - Attene, Giovanna

AU - Papa, Roberto

PY - 2012/4/3

Y1 - 2012/4/3

N2 - Knowledge about the origins and evolution of crop species represents an important prerequisite for efficient conservation and use of existing plant materials. This study was designed to solve the ongoing debate on the origins of the common bean by investigating the nucleotide diversity at five gene loci of a large sample that represents the entire geographical distribution of the wild forms of this species. Our data clearly indicate a Mesoamerican origin of the common bean. They also strongly support the occurrence of a bottleneck during the formation of the Andean gene pool that predates the domestication, which was suggested by recent studies based on multilocus molecular markers. Furthermore, a remarkable result was the genetic structure that was seen for the Mesoamerican accessions, with the identification of four different genetic groups that have different relationships with the sets of wild accessions from the Andes and northern Peru-Ecuador. This finding implies that both of the gene pools from South America originated through different migration events from the Mesoamerican populations that were characteristic of central Mexico.

AB - Knowledge about the origins and evolution of crop species represents an important prerequisite for efficient conservation and use of existing plant materials. This study was designed to solve the ongoing debate on the origins of the common bean by investigating the nucleotide diversity at five gene loci of a large sample that represents the entire geographical distribution of the wild forms of this species. Our data clearly indicate a Mesoamerican origin of the common bean. They also strongly support the occurrence of a bottleneck during the formation of the Andean gene pool that predates the domestication, which was suggested by recent studies based on multilocus molecular markers. Furthermore, a remarkable result was the genetic structure that was seen for the Mesoamerican accessions, with the identification of four different genetic groups that have different relationships with the sets of wild accessions from the Andes and northern Peru-Ecuador. This finding implies that both of the gene pools from South America originated through different migration events from the Mesoamerican populations that were characteristic of central Mexico.

KW - Central America

KW - Genes, Plant

KW - Haplotypes

KW - Molecular Sequence Data

KW - Phaseolus

KW - Sequence Analysis, DNA

U2 - 10.1073/pnas.1108973109

DO - 10.1073/pnas.1108973109

M3 - Journal article

C2 - 22393017

SN - 0027-8424

VL - 109

SP - E788-96

JO - Proceedings of the National Academy of Sciences

JF - Proceedings of the National Academy of Sciences

IS - 14

ER -