The enzymatic effect of Alternaria alternata on wheat plant and its role in pathogenicity as a virulence factor

Abstract

Wheat is one of the most important plant in the world as it used as a nutritional food source can avvacted by many fungal disease like leaf blight disease &black mold disease which caused by A.alternata ,during the period from February 2022 to September 2022, study done by taken 180 samples from infected wheat plant lesions collected in regions where A.alternaria leaf blight and black mold has been reported were studied from different area in wasit city including (Al-Numaniyah, Kut, Dabuni, Sheikh Saad,