摘要
Tolerance of a facultative marine fungus Aspergillus flavus towards As (V) was tested.Luxuriant growth of the test isolate was observed in culture media with As (V) concentrations of 25 mg L-1 and 50 mg L-1,indicating its tolerance to the metal.Accumulation rate of arsenic was always higher when exposed to As (V) at 50 mg L-1 than at 25 mg L-1.The study reveals Aspergillus flavus as a promising candidate for environmental bioremediation.Arsenic contents (mg g-1) in the fungus when exposed to 50 mg L-1 As (V) were measured as 11.1773,4.0983,and 8.0000 mg g-1 on day 3,6 and 9,respectively.The highest content was observed initially,i.e.on day 3,followed by a decline and a rise again.These results provide baseline information for further explorations regarding the exploitation of the fungus for arsenic removal.
Tolerance of a facultative marine fungus Aspergillusflavus towards As （V） was tested. Luxuriant growth of the test isolate was observed in culture media with As （V） concentrations of 25 mg L^-1 and 50 mg·L^-1, indicating its tolerance to the metal. Accumulation rate of arsenic was always higher when exposed to As （V） at 50 mg L-1 than at 25 mg L-1. The study reveals Aspergillus flavus as a promising candidate for environmental bioremediation. Arsenic contents （mgg-1） in the fungus when exposed to 50mgL-1 As （V） were measured as 11.1773, 4.0983, and 8.0000 mg g-1 on day 3, 6 and 9, respectively. The highest content was observed ini- tially, i.e. on day 3, followed by a decline and a rise again. These results provide baseline information for further explorations regarding the exploitation of the fungus for arsenic removal.
基金
due to the Department of Science and Technology,Government of India,for financial support sanctioned under SERC Fast Track Proposals for Young Scientists Scheme (No. SR/FT/L-99/2006) to AKV
