Soil samples were collected from the different locations in Sathuragiri Hills (Western Ghats, Tamilnadu). The Total Fungal Counts in the soil samples of the different locations were analyzed. The percentage frequencies of occurrence of fungal isolates are identified. The fungal isolates were identified based on the morphological and cultural characteristics they were identified as Cladosporium ...

Convenient expression systems for efficient heterologous production of different laccases are needed for their characterization and application. The laccase cDNAs lcc1 and lcc2 from Trametes versicolor were expressed in Pichia pastoris and Aspergillus niger under control of their respective glyceraldehyde3-phosphate dehydrogenase promoters and with the native secretion signal directing catalyti...

The mutualistic relationships that occur between myrmecophilous aphids and ants are based on the rich food supply that honeydew represents for ants and on the protection they provide against aphid natural enemies. While aphid predators and parasitoids actively forage for oviposition sites by using aphid semiochemicals, scouts of aphid-tending ant species would also benefit from locating honeyde...

Seventy-three fungal species belonging to forty-three genera were isolated from 40 samples of Saccharrum officinarum (collected from Naage-Hamadi canal in Qena Governorate, Egypt). Aspergillus, Trichoderma, Mucor and Pythium were the most common genera on the two isolation media. The dominant species of Aspergillus were A. niger, A. flavus, A. ustus, A. terreus and A. wentii. Some species were ...

The secreted yield of hen egg-white lysozyme (HEWL) from the filamentous fungus Aspergillus niger was increased 10-20-fold by constructing a novel gene fusion. The cDNA sequence encoding mature HEWL was fused in frame to part of the native A. niger gene encoding glucoamylase (glaA), separated by a proteolytic cleavage site for in vivo processing. Using this construct, peak secreted HEWL yields ...

The present investigation deals with the kinetics of submerged citric acid fermentation by Aspergillus niger using blackstrap molasses as the basal fermentation media. A laboratory scale stirred fermentor of 15-L capacity having working volume of 9-L was used for cultivation process and nutritional analysis. Among the 10 stock cultures of Aspergillus niger, the strain GCBT7 was found to enhance...

Citric acid is one of the important organic acids in fields industry, agriculture, medicine, etc., and it can be obtained many ways, best which biological methods using microorganisms. The current study aimed to prepare two cheap environmentally friendly culture media for purpose producing citric from Aspergillus niger. media, rice husks other Wheat bran, where a comparison was made between the...