Fig. 5

Comparative chloroplast genomes of Rhamnaceae. A PCA score plot of Rhamnaceae and the outgroup based on codon usage. Z. jujuba NC_030299 and H. acerba MN794429 are highlighted as they are deviated from ziziphoid group. B Phylogenetic tree of Rhamnaceae. Different colors correspond to tribes labelled in square brackets. The outgroup branch is not colored. Two major groups of Rhamnaceae: ziziphoid and rhamnoid are presented on the rightmost text. A number at each node indicates the maximum likelihood bootstrap value