Studies on comparative gel electrophoretic patterns of proteins and enzymes from isolates of Rhizoctonia solani causing sheath blight disease in rice

Abstract

Protein and isoenzyme patterns of polyphenol (DOPA) oxidase, peroxidase, acetyl esterase, and acid and alkaline phosphatases from mycelial and extracellular extracts, as detected by polyacrylamide gel electrophoretic techniques, reflected marked variations among five differentially virulent isolates of Rhizoctonia solani, the causal organism of sheath blight disease of rice. Although no correlation could be obtained with the enzyme patterns and virulence of the isolates, two isolates with the lowest virulence showed mycelial and extracellular peroxidase bands and only the least virulent isolate gave mycelial alkaline phosphatase bands.