Development of a granular bioformulation of Achromobacter xylosoxidans AX77 16S for sustainable onion white rot management and growth enhancement.

ABSTRACT: Onion white rot, caused by Stromatinia cepivora, is a major soil-borne fungal disease that severely affects onion production. This study introduces a novel endophytic bacterium, Achromobacter xylosoxidans AX77 16S, isolated from healthy onion seeds, as a potential biocontrol agent and growth promoter. Out of 78 bacterial isolates screened, AX77 16S showed the strongest antifungal activity, inhibiting pathogen growth by 50% in dual culture assays. Its application significantly enhanced seed germination (up to 82%) and improved shoot and root development, increasing vigor indices by over 100% compared to untreated controls. The strain was identified by biochemical and molecular techniques and registered in GenBank (ON679518). GC-MS analysis revealed ten bioactive compounds in the bacterial f

SUBMITTER: ELKasaby AI 

PROVIDER: S-EPMC12311146 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature