Influence of native carbon sources on the production of pectolytic and cellulolytic enzymes by Fusarium oxysporum and Fusarium moniliforme

Abstract

Summary Pectin in the case of F. oxysporum and sodium polypectate in the case of F. moniliforme were proved to be the best native carbon sources for polygalacturonase (PG) production. Maximal pectinmethyl-galacturonase (PMG) production was recorded with pectin in both the test pathogens. Cotton supported maximal cellulase production in F. oxysporum whereas CMC in F. moniliforme . Sucrose which served as control was inferior to all the native carbon sources for the production of pectic and cellulolytic enzymes. Both the species of Fusarium were capable of producing various pectic and cellulolytic enzymes constitutively and the increased production in presence of certain native (pectic/cellulosic) substances can be considered merely the stimulation of these enzymes synthesis rather than actual induction. No exact correlation could be drawn between biomass and enzyme production. All the native carbon sources used in the present studies were found to be inferior than sucrose for biomass production.