Aspergillus niger; Aspergillus terreus HDJZ-ZWM and Paecilomyces variotii as polyextremophilic fungi isolated from Egyptian soil

Three polyextremophilic fungal isolates were isolated from agriculture soil at Mitsalsil, Dakahlia Governorate, Egypt. They tolerated temperature till 45 oC and pH range from (1-14). They fully identified morphologically and genetically as Aspergillus niger; Aspergillus terreus HDJZ-ZWM and Paecilomyces variotii. The three fungal isolates secreted cellulase enzyme at neutral and acidic conditions also at different temperature degrees (28 oC and 45 oC). Lipase enzyme not secreted by Aspergillus terreus while secreted in neutral condition at 28 oC and 45oC by Aspergillus niger and at 45 oC in acidic pH by Paecilomyces variotii. All fungal isolates secreted amylase at acidic pH at 45 oC. Protease was secreted at all pH and temperatures used by Paecilomyces variotii, while secreted in neutral condition at 45 oC by Aspergillus niger and at 28 oC and 45 oC by Aspergillus terreus.