Historical Routes for Diversification of Domesticated Chickpea Inferred from Landrace Genomics.

Autor:	Igolkina AA; Mathematical Biology and Bioinformatics Laboratory, Peter the Great St. Petersburg Polytechnic University, St. Petersburg, Russia., Noujdina NV; Marine and Environmental Biology, University of Southern California, Los Angeles, CA, USA., Vishnyakova M; N.I. Vavilov All-Russian Institute of Plant Genetic Resources (VIR), St. Petersburg, Russia., Longcore T; Spatial Sciences Institute, University of Southern California, Los Angeles, CA, USA., von Wettberg E; Mathematical Biology and Bioinformatics Laboratory, Peter the Great St. Petersburg Polytechnic University, St. Petersburg, Russia.; Plant and Soil Science and Gund Institute for the Environment, University of Vermont, Burlington, VT, USA., Nuzhdin SV; Molecular and Computational Biology, University of Southern California, Los Angeles, CA, USA., Samsonova MG; Mathematical Biology and Bioinformatics Laboratory, Peter the Great St. Petersburg Polytechnic University, St. Petersburg, Russia.
Jazyk:	angličtina
Zdroj:	Molecular biology and evolution [Mol Biol Evol] 2023 Jun 01; Vol. 40 (6).
DOI:	10.1093/molbev/msad110
Abstrakt:	According to archaeological records, chickpea (Cicer arietinum) was first domesticated in the Fertile Crescent about 10,000 years BP. Its subsequent diversification in Middle East, South Asia, Ethiopia, and the Western Mediterranean, however, remains obscure and cannot be resolved using only archeological and historical evidence. Moreover, chickpea has two market types: "desi" and "kabuli," for which the geographic origin is a matter of debate. To decipher chickpea history, we took the genetic data from 421 chickpea landraces unaffected by the green revolution and tested complex historical hypotheses of chickpea migration and admixture on two hierarchical spatial levels: within and between major regions of cultivation. For chickpea migration within regions, we developed popdisp, a Bayesian model of population dispersal from a regional representative center toward the sampling sites that considers geographical proximities between sites. This method confirmed that chickpea spreads within each geographical region along optimal geographical routes rather than by simple diffusion and estimated representative allele frequencies for each region. For chickpea migration between regions, we developed another model, migadmi, that takes allele frequencies of populations and evaluates multiple and nested admixture events. Applying this model to desi populations, we found both Indian and Middle Eastern traces in Ethiopian chickpea, suggesting the presence of a seaway from South Asia to Ethiopia. As for the origin of kabuli chickpeas, we found significant evidence for its origin from Turkey rather than Central Asia. (© The Author(s) 2023. Published by Oxford University Press on behalf of Society for Molecular Biology and Evolution.)
Databáze:	MEDLINE
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