Effects of SO₂ and H₂S on Production Hydrolytic Enzymes by Phyllosphere Fungi of Some Ornamental Plants

The activity of pectinase increased due to H₂S in Rhizoctonia bataticola, Aspergillus flavus, A.carbonarius, A.petrakii, A.niger and Helminthosporium tetramera. Cellulase activity increased under the influence of H₂S in Fusarium oxysporium. SO₂ increased Cx activity. The highest influence of SO₂ and H₂S was seen on R. bataticola.