POTENTIAL OF FLUORESCENT PSEUDOMONADS TO BIOCONTROL OF ROOT DISEASES OF SUGAR BEET

Abstract

Sugar beet is subject to attack by certain diseases that affect dramatically sugar productivity. Fusarium oxysporum f.sp.betae has been considered among the most common fungal root pathogens in grown beets fields’ worldwide. The pathogens along with other causal organisms are responsible for significant reduction in the root yield as well as decrement sucrose content and juice purity in the affected roots. The present study was carried out to investigate the use of fluorescent pseudomonads as seed or soil treatment to control the major soil-borne diseases to decrease, isolates of fluorescent pseudomonads, antifungal activity, In vivo evaluation of Pseudomonas isolates antibiosis against F. oxysporum f.sp. betae, Characterization and Molecular identity of Pseudomonas spp., extracellular hydrolytic enzymes, hydrogen cyanide, indole acetic acid, Antibiotic production antifungal metabolites by GC:MASS, Effect of copper and zinc on secondary metabolite of different Pseudomonas strains, polyphenol oxidase and peroxidase activity, also studied.