Celery flavonoid-rich extract significantly reduces cucumber powdery mildew severity and enhances plant defense responses.

ABSTRACT: This study assesses the antifungal efficacy of celery flavonoid-rich extract (CFRE) against cucumber powdery mildew, caused by Podosphaera fusca, in a controlled greenhouse setting. The application of CFRE at a concentration of 4 mg mL^- 1 resulted in a remarkable 97% reduction in disease severity. High-performance liquid chromatographic (HPLC) analysis identified apigenin as the predominant flavonoid in CFRE. Furthermore, CFRE treatment induced a robust defense response in cucumber leaves, marked by elevated levels of flavonoids, phenolics, chlorophyll, and defense enzymes such as β-1,3-glucanase, chitinase, peroxidase, phenylalanine ammonia-lyase, and polyphenol oxidase. The study also observed upregulation in the expression of three investigated genes associated with β-1,3-glu

SUBMITTER: Soleimani H 

PROVIDER: S-EPMC11950358 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature