Table 1.
Physical and chemical properties of the maize rhizome soil samples.
Fig 1.
Rarefaction curves based on the observed species in the bacterial communities in maize rhizosphere soil.
The abscissa represents the randomly selected sequencing data. The ordinate represents the number of observed operational taxonomical units (OTUs). When the curve tended to be flat, the amount of sequencing data was reasonable. CK, KC, DY, JDF, and FH groups indicate control, B. subtilis, B. licheniformis, B. amyloliquefaciens, and combined strains treatments, respectively.
Table 2.
Sequencing statistics and diversity indices of the bacterial communities in the different soil.
Fig 2.
Bacterial community composition at the phylum (A) and species (B) level.
CK, KC, DY, JDF, and FH groups indicate control, B. subtilis, B. licheniformis, B. amyloliquefaciens, and combined strains treatments, respectively.
Fig 3.
Heat map with a phylogenetic tree generated at the genus level.
CK, KC, DY, JDF, and FH groups indicate control, B. subtilis, B. licheniformis, B. amyloliquefaciens, and combined strains treatments, respectively.
Fig 4.
Bacteria functional composition of different soil samples.
CK, KC, DY, JDF, and FH groups indicate control, B. subtilis, B. licheniformis, B. amyloliquefaciens, and combined strains treatments, respectively.
Fig 5.
RDA analysis of the correlations between the physiochemical characteristics of the soil and the microbial species in the maize rhizosphere.
The blue arrows represent the strains, and the red arrows represent the properties of the soil. The length of the arrows indicates the degree of correlation between the strain and the sample distribution. The angle between the two arrow lines indicates the correlation. The smaller the angle was, the stronger the correlation. CK, KC, DY, JDF, and FH groups indicate control, B. subtilis, B. licheniformis, B. amyloliquefaciens, and combined strains treatments, respectively.