Fig. 2

Distribution of biosynthetic gene clusters (BGCs) in different food fermentation types. A BGC overview among 15 food fermentation types. The central tree of the interface represents a hierarchical clustering dendrogram based on BGCs in a gene cluster family (GCF) among 15 food fermentation types. In the circle heat map, each layer represents the distribution of BGCs in different food fermentation types. The barplots represent the numbers of habitat-specific BGCs in different food fermentation types. The triangles represent the ratios of habitat-specific BGCs from habitat-specific species. The stacked columns represent the relative abundances of BGCs from different BGC types in different food fermentation types. The numbers above the stacked columns represent BGC amounts in different food fermentation types. B Sankey diagram showing the taxonomic origin (family level) of BGCs in different food fermentations and the composition of BGC type in different families. Species that are not included in the 13 BGC-rich families are combined and shown in Others. BGCs that are not included in the 8 dominant BGC types are combined and shown in Others