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Nucleotide diversity of a genomic sequence similar to SHATTERPROOF (PvSHP1) in domesticated and wild common bean (Phaseolus vulgaris L.)

Nanni, Laura and Bitocchi, Elena and Bellucci, Elisa and Rossi, M. and Rau, Domenico and Attene, Giovanna and Gepts, Paul and Papa, Roberto (2011) Nucleotide diversity of a genomic sequence similar to SHATTERPROOF (PvSHP1) in domesticated and wild common bean (Phaseolus vulgaris L.). TAG Theoretical and Applied Genetics, Vol. 123 (8), p. 1341-1357. ISSN 0040-5752. eISSN 1432-2242. Article.

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DOI: 10.1007/s00122-011-1671-z

Abstract

Evolutionary studies in plant and animal breeding are aimed at understanding the structure and organization of genetic variations of species. We have identified and characterized a genomic sequence in Phaseolus vulgaris of 1,200 bp (PvSHP1) that is homologous to SHATTERPROOF-1 (SHP1), a gene involved in control of fruit shattering in Arabidopsis thaliana. The PvSHP1 fragment was mapped to chromosome Pv06 in P. vulgaris and is linked to the Xower and seed color gene V. Amplification of the PvSHP1 sequence from the most agronomically important legume species showed a high degree of interspecies diversity in the introns within the Phaseoleae, while the coding region was conserved across distant taxa. Sequencing of the PvSHP1 sequence in a sample of 91 wild and domesticated genotypes that span the geographic distribution of this species in the centers of origin showed that PvSHP1 is highly polymorphic and, therefore, particularly useful to further investigate the origin and domestication history of P. vulgaris. Our data confirm the gene pool structure seen in P. vulgaris along with independent domestication processes in the Andes and Mesoamerica; they provide additional evidence for a single domestication event in Mesoamerica. Moreover, our results support the Mesoamerican origin of this species. Finally, we have developed three indel-spanning markers that will be very useful for bean germplasm characterization, and particularly to trace the distribution of the domesticated Andean and Mesoamerican gene pools.

Item Type:Article
ID Code:6391
Status:Published
Refereed:Yes
Uncontrolled Keywords:Phaseolus vulgaris, domestication processes, Andes and Mesoamerica
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/07 Genetica agraria
Divisions:001 Università di Sassari > 01 Dipartimenti > Scienze agronomiche e genetica vegetale agraria
Publisher:Springer Berlin / Heidelberg
ISSN:0040-5752
eISSN:1432-2242
Copyright Holders:© Springer-Verlag 2011
Additional Information:The online version of this article contains supplementary material, which is available to authorized users.
Deposited On:24 Aug 2011 09:03

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