Fig. 5

Global distribution and biodiversity patterns of Bradymonabacteria in eight types of biotopes from 1552 samples. a Global abundance of Bradymonabacteria. The abundance of 16S rRNA gene sequences of Bradymonabacteria is shown relative to the total prokaryotic sequences in the selected samples. Each node represents one sample. The node color indicates the type of biotope, and the node size represents the relative abundance in the corresponding samples. The bold numbers represent the number of samples where Bradymonabacteria were detected. b Beta diversity among all the biologically independent samples: principal component analysis (PCA) of the Bray-Curtis dissimilarity matrix, PC1 versus PC2. The clustering of all samples could be mainly explained by the type of biotopes. c Relative abundance of 16S rRNA gene sequences among eight types of habitats. This relative abundance of Bradymonabacteria sequences was computed within each habitat (Table S5), and the significant differences among the different biotopes were assessed by the Kruskal−Wallis test. Abbreviations: NSLS, nonsaline lake sediments; NSS, nonsaline soil; NSW, nonsaline water; SLS, saline lake sediments; SLW, saline lake water; SS, saline soil; MS, marine sediments; SW, sea water