施用盖氏假单胞菌PG-9对苹果根系内生细菌群落组成影响研究

Translation: To determine the changes in the composition of endophytic bacterial species in apple root system caused by the application of Pseudomonas putida strain PG-9, phylogenetic analysis was conducted at the phylum and genus levels. A total of 16 phyla were identified at the phylum level, and the relative abundance of dominant bacterial phyla is shown in Figure 13. The dominant bacterial phyla mainly included Actinobacteriota, Proteobacteria, Firmicutes, and other less abundant phyla. Compared to the control, the relative abundance of Actinobacteriota decreased by 8.30% in the PG-9-treated samples, while the relative abundance of Proteobacteria and Firmicutes increased by 12.30% and 54.91%, respectively. However, these differences were not statistically significant (P>0.05).