LDN= Low-density treatment, non-rhizosphere soil; LDR= Low-density treatment, rhizosphere soil; HDN= High-density treatment, non-rhizosphere soil; HDR= High-density treatment, rhizosphere soil. Means (n = 3). Different letters in a column indicate significant (p ≤0.05) differences among the four treatments.

Table 3 KEGG enrichment results in the low-density vs high-density treatments