Table 4.
Results of the multiple regression on distance matrices (MRM) analysis of the core-enriched bacterial communities (Bray–Curtis distances) in the bulk soil (BS) and rhizosphere soil (RS) for each latent factor
| Compartment | Variables | Coefficients | P-values |
|---|---|---|---|
| BS (R2 = 34.11%, P < 0.001) | TK | 0.096 | 0.005 |
| Clay | 0.059 | 0.195 | |
| Isoliq | 0.033 | 0.773 | |
| Cu | 0.032 | 0.180 | |
| TC | 0.021 | 0.022 | |
| C/N | 0.002 | 0.129 | |
| TN | −0.346 | 0.034 | |
| RS (R2 = 36.13%, P < 0.001) | TK | 0.168 | 0.001 |
| pH | 0.139 | 0.024 | |
| Acid | 0.033 | 0.151 | |
| TC | 0.012 | 0.030 | |
| Liq | 0.008 | 0.821 | |
| Isoliq | −0.144 | 0.420 |
Note: pH, pH; TC, total nitrogen; TN, total nitrogen; C/N, total carbon/nitrogen ratio; TK, total potassium; Cu, copper; Liq, liquiritin; Isoliq, isoliquiritin; and Acid, glycyrrhizin. R2 represents the variation in community dissimilarity that can be explained by the latent factors (significantly correlated variables). The partial regression coefficients and associated P-values of the final model are reported from permutation test (nperm = 999)