Nineteen complete chloroplast genomes of the genus Pedicularis in Tibet: Comparative genome and phylogenetic analysis

Traditional taxonomy placed too much emphasis on the weight of morphological traits in the taxonomy of the genus, which has led to the long-standing controversy over the phylogenetic relationship. In this study, 19 chloroplast(cp) genomes of Pedicularis species were sequenced, assembled, characterized and conducted phylogenetic analysis for the first time.

The results showed that the 19 cp genomes were 144,279-162,362 bp in length, comprising 117-133 genes, and ndh family were lossed commonly in those genomes. The codons usage perference of those genomes ended in A/T. Forward (F) Palindromic (P) were dominant in the long terminal repeats (LTRs) and A/T was dominant in the simple sequence repeats (SSRs). According to IRb/SSC, the 19 genomes could be classified into four types.