Fig. 2

Bacterial community structure in the rhizosphere and bulk soils. a Percent of taxa at the phylum level in the rhizosphere and bulk soils. The relative abundance of each taxon was calculated by averaging the abundances of three duplicates in each soil group. b Percent of taxa at the genus level in the rhizosphere and bulk soils. c Phylogenetic tree showing the phylogenetic relationship of the bacterial community at the genus level. The box size on the right corresponds to the average relative abundance of the phylum in the corresponding soil. The phylum that the classification genus belonged to is marked in the braces behind the corresponding genus. d Venn diagrams representing the total numbers of OTUs in four soil groups and are shared with each other