Fig. 3
Taxonomic characterization of buks obtained from the CGR database. a Taxonomic identification of buks in different main genera. b Quantity of buks containing bacterial strains at the genus level. c The proportion of bacterial strains at genus level with one buk gene. d The proportion of bacterial strains at genus level with two or three buk gene. e Taxonomic characterization of reclassified buks. The width of the clade indicates the value of bootstrap, normalized to 0–1. f The mRNA level of buk in different bacterias. *p < 0.05, **p < 0.01, ***p < 0.001