The complete chloroplast genome of an inverted-repeat-lacking species, Vicia sepium, and its phylogeny.

Vicia sepium L., as a pan-temperate species, it is suitable as a constituent part of grazed grasslands because it can be resistant to winter kill and it contains abundant proteins. In this study, complete chloroplast genome of V. sepium was explored and phylogenetic analysis was done. The result showed that the whole genome was 124,095 bp long with IR loss. The overall GC content was 35.03%. A total of 109 genes were identified, including 80 protein-coding, 30 transfer RNA, and four ribosome RNA genes. Similar to most of the IRLC plastoms, rpl22, rps16 and one intron of clpP were lost. The phylogenetic analysis of protein-coding genes from 25 Fabaceae species belonging to IRLC showed that V. sepium was similar to V. sativa. The chloroplast genome reported here will promote our understanding of the phylogeny and evolution of the genus Vicia.