IRD, Université Montpellier, DIADE, Montpellier, France.
AGAP, Université Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France.
Nat Ecol Evol. 2018 Sep;2(9):1377-1380. doi: 10.1038/s41559-018-0643-y. Epub 2018 Aug 6.
There have been intense debates over the geographic origin of African crops and agriculture. Here, we used whole-genome sequencing data to infer the domestication origin of pearl millet (Cenchrus americanus). Our results supported an origin in western Sahara, and we dated the onset of cultivated pearl millet expansion in Africa to 4,900 years ago. We provided evidence that wild-to-crop gene flow increased cultivated genetic diversity leading to diversity hotspots in western and eastern Sahel and adaptive introgression of 15 genomic regions. Our study reconciled genetic and archaeological data for one of the oldest African crops.
关于非洲作物和农业的起源地，一直存在激烈的争论。在这里，我们使用全基因组测序数据来推断珍珠粟（Cenchrus americanus）的驯化起源。我们的结果支持起源于撒哈拉西部，并且我们将非洲栽培珍珠粟扩张的开始时间定在 4900 年前。我们提供的证据表明，从野生到作物的基因流增加了栽培遗传多样性，导致了萨赫勒西部和东部的多样性热点和 15 个基因组区域的适应性渐渗。我们的研究为非洲最古老的作物之一协调了遗传和考古数据。
