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Genome-wide signatures of the geographic expansion and breeding of soybean
Ist Teil von
Science China. Life sciences, 2023-02, Vol.66 (2), p.350-365
Ort / Verlag
Beijing: Science China Press
Erscheinungsjahr
2023
Quelle
MEDLINE
Beschreibungen/Notizen
Soybean is a leguminous crop that provides oil and protein. Exploring the genomic signatures of soybean evolution is crucial for breeding varieties with improved adaptability to environmental extremes. We analyzed the genome sequences of 2,214 soybeans and proposed a soybean evolutionary route, i.e., the expansion of annual wild soybean (
Glycine soja
Sieb. & Zucc.) from southern China and its domestication in central China, followed by the expansion and local breeding selection of its landraces (
G. max
(L.) Merr.). We observed that the genetic introgression in soybean landraces was mostly derived from sympatric rather than allopatric wild populations during the geographic expansion. Soybean expansion and breeding were accompanied by the positive selection of flowering time genes, including
GmSPA3c
. Our study sheds light on the evolutionary history of soybean and provides valuable genetic resources for its future breeding.