Fig. 3: Taxonomic phylogenetic tree based on seven conserved replicase domains in ORF1ab of bat CoVs and Phylogenetic analysis of 10 subgenera and an unclassified-Alpha-CoVs based on RdRp(440 bp).

a The trees were constructed by the maximum likelihood method using appropriate models (LG + F + I + G4) based on iqtree. The external color strips range from inner to outer represent the CoVs identified in our studies, virus-unclassified, virus-subgenus, CoVs identified in China, and virus-genus. The classified CoV species have been marked in the corresponding evolutionary branch. b Nucleotide sequence phylogenetic trees of the RdRp gene in different subgenera use different colors as background colors. The reference strains of each subgenus are dotted and annotated in words.