Bacterial composition and biomarkers associated with diverse soybean compartments using 16S rRNA gene. (a) Phylum‐level distribution of the bacterial microbiota associated with the seven compartments (seeds, pods, stems, leaves, roots, rhizosphere soils and bulk soils) across four soybean cultivars (ZD23, ZD25, ZD34 and ZD42). Average relative abundance of three biological replicates are displayed in separate stacked bars. (b) LDA effect size taxonomic cladogram comparing all samples categorized by the seven compartments. Significantly discriminant taxon nodes are coloured and branch areas are shaded according to the highest‐ranked variety for that taxon. If the taxon is not significantly differentially represented between sample groups, the corresponding node is coloured yellow. Significantly discriminant taxon from bacterial phylum to order levels are labelled in the cladogram, and that in the family level are labelled in the right.