Fig. 2

Phylogenetic relationships, architecture of conserved protein domains and motifs, and gene structure in COI genes of D. catenatum, P. equestris, A. shenzhenica, A. thaliana, and O. sativa. A The phylogenetic tree of COI proteins. It was constructed according to the NJ method by MEGA 7.0 with 1000 bootstrap replicates. B The conserved domain and motif composition of COI proteins. The Solid triangle with orange colors represented the F-box domain. The Solid boxes with different colors represented different motif, and the legend was given at the right of figure. C Exon–intron structure of COI genes. Green boxes represents exons and black lines represent introns