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Table 2 Correlations between bacterial and fungal communities and root organic acids and carbon pools in the rhizosphere and roots

From: Root-associated microbiomes of wheat under the combined effect of plant development and nitrogen fertilization

Carbon pool Bacteria Fungi
Rhizosphere Root Rhizosphere Root
r P value r P value r P value r P value
Acetic acid - - 0.174 0.021 - - - -
Oxalic acid - - 0.228 0.006 - - - -
Succinic acid - - 0.265 0.004 - - - -
Malic acid - - 0.332 0.002 - - - -
Tartaric acid - - 0.323 0.001 - - - -
Citric acid - - 0.228 0.006 - - - -
ROC 0.466 0.001 0.326 0.001 - - - -
SAC 0.165 0.021 0.192 0.010 - - 0.144 0.028
SOC - - 0.215 0.010 - - - -
  1. The Mantel test was performed using the Pearson correlation method. Carbon pools were calculated based on the Euclidean distance, and the microbial community structures (OTU level) were calculated based on the Bray-Curtis distance. P is the significance level. Values with P<0.05 are shown. ROC: root-released organic carbon; SAC: soil active carbon; SOC: soil organic carbon