Fig. 1

Circular representation of Melitotus dentata plastome and confirmation of IR extent in it. a Circular representation of Melitotus dentata plastome. Genes shown outside the circle are transcribed clockwise and those inside are transcribed counter clockwise. Genes belonging to different functional groups are color-coded. The dark gray area in the inner circle indicates GC content and the thick black line shows the extent of different regions. LSC: large single copy; SSC: small single copy; IR: inverted repeat; IRA: inverted repeat A; IRB: inverted repeat B. b Confirmation of IR extent in Melilotus dentata. Whole genome resequencing reads were mapped to the assembled Melilotus dentata plastome containing both two copies (upper) or a single copy (lower) of the novel IR. The scale at the left reports the depth of reads, which is indicated graphically by the blue histogram