Effect of some environmental and nutritional factors on the production of zearalenone of Fusarium species

Fusairum graminearum; Fusarium sambucinum: Fusairum roseum; Fusarium moniliforme; Fusarium solani and Fusarium oxysporum were isolated from wheat grains and used for studies on the production of Zearalenone toxin under different cultures conditions; temperature and pH values. F. graminearum; F. sambucinum; F. roseum and F. moniliforme had the ability to produce Zearalenone on Czapek's medium containing 3% glucose or 0.5% peptones at 25 degree C and pH 5. F. solani and F. oxysporum did not produce zearalenone. All studied Fusarium spp. Were not able to produce Zearalenone at 30 degree C; pH 3 and 8