Potential biocontrol and plant growth promotion of an endophytic bacteria isolated from Glycyrrhiza uralensis seeds

Abstract Background Endophytic bacteria have been demonstrated to be one of the most potentially important biocontrol agents for their efficiently improved plant growth and protection host plants from infection by phytopathogens. Results Nine strains endophytic isolated Glycyrrhiza uralensis Fisch. ( G. ) seeds were screened inhibitory effect against 5 fungal phytopathogens using dual culture method. Among which, isolate FT 2 showed highest percentage inhibition all test Detached root assay that significantly reduced disease index rotted area on Angelica sinensis slices caused Fusarium acuminatum . also exhibited multiple promotion traits qualitative analytical Based phenotypic, physiological biochemical characterization genotypic characterization, strain was identified as Stenotrophomonas rhizophila Application Cucumber Wilt, equal chemical fungicide, carbendazim. Moreover, increased height, stem diameter, leaf number fresh weight cucumber seedlings activities defense-related enzymes including phenylalanine ammonia-lyase, polyphenol oxidase peroxidase. In addition, could promote seed germination seedling increase enzyme activities, available nutrient contents bacterial count in rhizosphere soil. Conclusions The results used develop environmentally friendly microbial products improve activity pathogenic growth.