The first complete plastome sequence from family Flagellariaceae (Flagellaria indica L., Poales)

As a part of phylogenomic study of graminids, we report the complete plastome sequence of Flagellaria indica L. (Flagellariaceae) (NCBI No. MZ504969). This is the first reported complete plastome sequence from the Flagellariaceae. This plastome shows typical quadripartite structure. The plastome size is 161,643 bp, which consists of 88,714 bp large single copy (LSC), 19,065 bp small single-copy (SSC), and 26,932 bp inverted repeat (IR) regions. However, we detected F. indica plastome has a 288 bp small inversion between ycf3 and trnS-GGA. The palindromic repeats of 10 bp (TTCCAATTTC/GAAATTGGAA) were located on the two break points of inversion. F. indica plastome contains 113 genes, including 79 protein-coding, 30 tRNA, and four rRNA genes. Unlike other families of graminids, the functional ycf1 and ycf2 genes exist. Sixteen genes contain one intron and two genes (clpP and ycf3) have two introns. Sixty-two simple sequence repeat (SSR) loci are scattered in the plastome, respectively. The phylogenetic tree shows that Flagellariaceae are the basal sister lineage of other graminid families.