苹果土壤细菌群落变化：盖氏假单胞菌PG-9的影响

Effect of Pseudomonas fluorescens PG-9 on the number of operational taxonomic units (OTUs) in apple soil

Effect of Pseudomonas fluorescens PG-9 on the composition of bacterial communities in apple soil

To determine the changes in soil bacterial species composition caused by the application of Pseudomonas fluorescens PG-9, phylogenetic analysis was conducted at the phylum and genus levels. A total of 35 phyla were identified at the phylum level, with the dominant phyla (Figure 6) including Actinobacteriota, Proteobacteria, Firmicutes, Chloroflexi, Acidobacteria, Bacteroidota, Patescibacteria, Gemmatimonadota, Myxococcota, and other less abundant phyla. Compared to the control, the relative abundances of Firmicutes and Gemmatimonadota decreased by 29.22% and 24.92%, respectively, in the PG-9 treatment, showing significant differences (P<0.05) compared to the control.