The Screening of Phosphorus Solubilizing Bacteria PSB3 and the Study of Its Antagonism

Abstract:

The screening system of phosphorus solubilizing bacteria in the soil was established by biological enriching using organic phosphobacteria liquid medium and then screening via plate dilution method using inorganic phosphobacteria solid medium. By 16S rDNA sequencing technique, the strain PSB3 with the 16S rDNA gene of 1525 bp length was identified as Burkholderia cepacia by Blastn search in NCBI database. The results of in-door antagonism experiment of PSB3 to 12 strains of Fusarium and Colletotrichum (Fusarium solani et al) showed that PSB3 had antagonism reaction against 6 of the 12 pathogens.