Fig. 5

Spearman correlation analysis between bacteria and phage families in the obesity and control groups. A Regression analysis between bacterial and viral Shannon indices. B Regression analysis between bacterial and viral richness. C Transkingdom correlations between the gut virome and bacteriome. The bacterial species with a prevalence of less than 20% were filtered out. Results in the heatmap labeled with “+” indicate r > 0.2 or r < − 0.2. The correlations with p < 0.05 and false discovery rate of < 0.05 were regarded as significant and selected for visualization. The viral species are classified by family level in columns and bacterial species are in rows