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The present study is an unprecedented extensive survey of mycobiota of Wadi El-Natrun depression, Western Desert of Egypt, which is a hypersaline extreme environment. The study was confined to the eight main lakes of the Wadi during six seasons in the years 2007/2009. In general, 159 species, in addition to four species varieties assigned to 50 genera, were recovered during the current investigation. The widest spectra of species were recorded in the genera Aspergillus (22 species +2 varieties), Penicillium (19), Fusarium (17),, Acremonium (8). The widest spectrum of species was recorded in El Zugm Lake (82 species) while the lowest was in Fasida (51). Also, the control medium contributed the widest spectrum of species (95 species) while 10% NaCl medium had the lowest (46 species), with the wider spectrum also being recorded in winter, spring seasons, the narrowest during summer. Total of 40 isolates of the most commonly encountered species from different sources, lakes,, isolation media were tested for their capabilities of producing cellulase, protease, lipase, phosphatase, xylanase,, pectinase enzymes. Most isolates had the capabilities of producing cellulase (96%), protease (86.8%), lipase (92.3%),, phosphatase (100%) but with different degrees; however, only 3 out of 20 isolates tested were xylanolytic (15%), only one out of 38 was pectinolytic.

Studies on Xerophilic, Acidiphilic,, Alkaliphilic Fungi in Wadi El-Natrun