2018
DOI: 10.1016/j.cub.2018.05.066
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The Rise and Fall of African Rice Cultivation Revealed by Analysis of 246 New Genomes

Abstract: African 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… Show more

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Cited by 91 publications
(149 citation statements)
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References 70 publications
(101 reference statements)
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“…In order to study association with environmental variables, we downloaded climatic variables for 107 geolocalised 124 accessions (Cubry et al 2018) from the worldclim v1.4 database (Hijmans et al 2005). The first two axes of the PCA of 125 bioclimatic data (BioPC1 and BioPC2) explained 49.91% and 26.32% of the variance of all variables.…”
Section: Environment-related Variables 123mentioning
confidence: 99%
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“…In order to study association with environmental variables, we downloaded climatic variables for 107 geolocalised 124 accessions (Cubry et al 2018) from the worldclim v1.4 database (Hijmans et al 2005). The first two axes of the PCA of 125 bioclimatic data (BioPC1 and BioPC2) explained 49.91% and 26.32% of the variance of all variables.…”
Section: Environment-related Variables 123mentioning
confidence: 99%
“…Single nucleotide polymorphisms (SNPs) from 163 high-depth re-sequenced O. glaberrima accessions were used in this 257 study (Cubry et al 2018). SNPs were identified based on mapping to the Oryza sativa japonica cv.…”
Section: Genotypic Data 256mentioning
confidence: 99%
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“…Our case study of an incomplete domestication indicates that the population size decline in the ancestor might have resulted in a lack of diversity to simultaneously select several quantitative domestication traits even under strong artificial selection by hummans. The demographic history has been reconstructed for a number of crops, which show bottlenecks during domestication, but have larger ancestral effective population size in the wild ancestors (Zhou et al 2017;Beissinger et al 2016;Wang et al 2017;Cubry et al 2018;Meyer et al 2016). To further investigate this potential reason for incomplete domestication the demographic history of more incomplete domesticates should be studied and more potential reasons for a lack of adaptation, e.g., trait pleiotropy (Caspari 1952) and the balance between new beneficial mutations and genetic load (Morran et al 2009) should be discovered.…”
Section: Resultsmentioning
confidence: 99%