The complete chloroplast genome of <i>Oxytropis monophylla</i> (Fabaceae): insights into genome features and evolutionary relationships

<i>Oxytropis monophylla</i> belongs to the genus Oxytropis of the family Fabaceae, and is an ecologically significant species, as it plays a vital role in desertification control. However, the chloroplast genome of <i>O. monophylla</i> remains unreported. Here, we constructed a high-quality chloroplast (cp) genome assembly for <i>O. monophylla</i> using NOVOPlasty and Illumina sequencing data. The results showed that the <i>O. monophylla</i> cp genome exhibited atypical structural characteristics due to the absence of an IR region. The chloroplast genome was 122,413 bp long with a GC content of 34.2%, encoding 108 complete genes. Phylogenetic reconstruction through both maximum likelihood and Bayesian inference methods resolved 12 <i>Oxytropis</i> species into two strongly supported clades (BS, PP =100%, 1). The <i>O. monophylla</i> and <i>O. bicolor</i> formed a monophyletic group, indicates a close relationship between the two species. The first chloroplast genome of <i>O. monophylla</i> establishes a good foundation for further genetic and genomic studies of the <i>Oxytropis</i> genus.