EXTRACELLULAR ENZYMATIC ACTIVITY OF PATHOGENIC FUNGI TO DATE PALM Phoenix dactylifera & CYCAS Cycas revoluta

Abstract

T his study was conducted at the Laboratories.of Date Palm Research Center-Basrah univ. to determine the extracellular enzymatic activity of some Date Palm andCycas fungal pathogen which were Fusarium solani ;Mauginiella scaettae andThielaviopsis paradoxa in their production to Protease ;cellulose ;Lipase ;Amylaseand Phenol oxidase enzymes on special solid media designed to quantative test.The results elucidated that the pathogenic fungi varied in their ability to producedegredating enzymes, the causal agent of Cycas decline F. solani showed a positivetest for all studied enzymes with varying degree of activity , the highest extracellularactivity were in Protease and Amylase test, while the causal agent of Date Palminflorescence rot M. scaettae recorded highest activity for Protease test and goodactivity for Phenol oxidase enzyme , the pathogen gave a negative test for Amylase .The pathogenic fungus T. paradoxa the causal agent of Terminal Bud rot of DatePalm had a moderate activity for Protease ; Lipase and gave a negative test forAmylase.