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245 1 0 _aThe rise and fall of African rice cultivation revealed by analysis of 246 new genomes
490 0 _vCurrent Biology, 28(14), p.2274-2282.e6, 2018
520 3 _aAfrican rice (Oryza glaberrima)was domesticated independently from Asian rice. The geographical origin of its domestication remains elusive. Using 246 new whole-genome sequences, we inferred the cradle of its domestication to be in the Inner Niger Delta. Domestication was preceded by a sharp decline of most wild populations that started more than 10,000 years ago. The wild population collapse occurred during the drying of the Sahara. This finding supports the hypothesis that depletion of wild resources in the Sahara triggered African rice domestication. African rice cultivation strongly expanded 2,000 years ago. During the last 5 centuries, a sharp decline of its cultivation coincided with the introduction of Asian rice in Africa. A gene, PROG1, associated with an erect plant architecture phenotype, showed convergent selection in two rice cultivated species, Oryza glaberrima from Africa and Oryza sativa from Asia. In contrast, a shattering gene, SH5, showed selection signature during African rice domestication, but not during Asian rice domestication. Overall, our genomic data revealed a complex history of African rice domestication influenced by important climatic changes in the Saharan area, by the expansion of African agricultural society, and by recent replacement by another domesticated species.
650 1 4 _aCROP
650 1 4 _aORYZA GLABERRIMA
650 1 4 _aORYZA BARTHII
650 1 4 _aDOMESTICATION
650 1 4 _aPOPULATION GENOMICS
650 1 4 _aRICE
700 1 2 _aCubry, P.
700 1 2 _aTranchant-Dubreuil, C.
700 1 2 _aThuillet, A. C.
700 1 2 _aMonat, C.
700 1 2 _aNdjiondjop, M. N.
700 1 2 _aLabadie, K.
700 1 2 _aBurgarella, C.
856 4 0 _uhttps://drive.google.com/file/d/15X2bC7nvqlSiEYQ2KgDGs7tkIZAGbm45/view?usp=drivesdk
_zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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