Enzymatic activity of some fungi isolated from yemeni agricultural soils
2011
Mahmoud, A.L.F. | Al-Mahdi, A.Y. | Al-Jebouri, H.J.
Forty- eight samples of different agricultural soils (100 g each) were collected from 9 different Province inYemen during 2008, which were cropped with corn, wheat barley and cabbage in the previous season. The samples were mycologically analyzed on Czapek's agar medium at 28 ± 1 C. 34 species belonging to 19 fungal genera were obtained from the samples, of which Aspergillus (5 species), Fusarium(7), Penicillium (4) and Mucor (2) contributed the broadest spectra of fungal species. The ability of 77 fungal isolates representing 34 species related to 19 genera to produce extracellular cell wall -degrading enzymes (cellulase -pectin lyase - polygalacturonase) on solid media was tested. Reslts reviled that most of the tested fungal isolates were able to produce cellulase, whereas a relatively few number of them were able to produce pectinases with variable capabilities. A,fumigatus followed by A. carneus were the active cellulase producers. Whereas P.citrinum was active producer of pectin lyase (PL), while Paecilomyces variotii appeared to be good polygalacturonase (PG) producer.
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