The complete chloroplast genome sequence of semi-wild soybean, Glycine gracilis (Fabales: Fabaceae)

Semi-wild soybean, Glycine gracilis, harbors unique gene resources for the soybean breeding programs, which would help to understand the process of soybean domestication. Here, we sequenced and characterized the complete chloroplast genome sequence of the semi-wild soybean. The genome of G. gracilis has 152,218 bp in length with 35.37% GC content. It contains two inverted repeats blocks of 25,574 bp, separated by the large single-copy block of 83,175 bp and small single-copy block of 17,895 bp. A total of 111 unique genes were annotated, including 77 protein coding genes, 30 tRNA genes and 4 rRNA genes. Phylogenetic analysis of the ten sequenced Glycine chloroplast genomes revealed that the semi-wild soybean G. gracilis is closer to cultivated soybean G. max than wild soybean G. soja. The newly sequenced complete chloroplast genome of G. gracilis will provide useful resources for the further genetic characterization that would enhance the conservation of this highly endangered species.