Fig. 4

Soybean endophytic bacterial co-occurrence networks in different developmental stages and under different treatments (top 50 abundance). (A) Co-occurrence networks of the control group and (B) WSHM treatment in the vegetative growth stage. (C) Co-occurrence networks of the control group and (D) WSHM treatment in the flowering stage. The nodes size represents the degree’s size; the node’s color represents the different phylum; the line between nodes represents the correlation, the red line means positive correlation, and the green line indicates negative correlation. Genera with a significant positive correlation with Sinorhizobium are labeled. V: vegetative growth stage; F: flowering stage; Con: root watering with deionized water; WSHM: root watering with WSHM.