Figure 2.

Microbial community structure in peanut rhizosphere at the phylum, class, order and family level. (A) Percent of microbial community abundance at the phylum level in four soil groups in peanut rhizosphere. The relative abundance is calculated by averaging the abundances of duplicate samples in each soil group in peanut rhizosphere. (B) Percent of microbial community abundance at the class level in four soil groups in peanut rhizosphere. The relative abundance is calculated by averaging the abundances of duplicate samples. (C) Percent of microbial community abundance at the order level in four soil groups in peanut rhizosphere. The relative abundance is calculated by averaging the abundances of duplicate samples. (D) Percent of microbial community abundance at the family level in four soil groups in peanut rhizosphere. The relative abundance is calculated by averaging the abundances of duplicate samples. The names of “norank” and “unidentified” are all unidentified species obtained directly from database via sequence alignment.