الفهرس 
ACKNOWLEDGEMENTS
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Abstract
The first part aims mainly to collect a group of aquatic fungi colonizing disparate submerged plant materials for further laboratory studies, since it is expected that these fungi are promising as cellulases and xylanases production in addition to isolation of terrestrial fungi from water samples and bacteria from mud soil in two water areas (Nile River and El-Ibrahimia canal) at Assiut Governorate. Concomitantly submerged mixed leaf litter samples were collected from the two sites for detecting the associated Ingoldian fungi and submerged wood debris samples were collected from the two sites for isolation of aquatic ascomycetous and basidiomycetous fungi. Mud samples were collected from the two sites for isolation of bacteria. In the second part, the potentiality of collected microorganism for producing cellulases and xylanses using some agro-industrial wastes were conducted. In addition, optimization of some environmental and culture conditions for highly enzyme production by the selected microbial isolates was also studied. In the third part of this study, the bioelectricity generation from agro-industrial wastes using a double chambered microbial fuel cell using bacteria and fungal enzymes were also considered.
The obtained results of each part can be summarized in the following points:-
The first part: Collection of target microorganisms:-
1- Ninety seven fungal species in addition to four variety and seventeen unknown fungal taxa. In addition, one hundred isolates of bacteria were collected. Some of collected species were molecularly identified and deposited in the Gene Bank.