Cometabolic degradation of the herbicide molinate was tested using two microorganisms, Arthrobacter sp., strain M3 and Streptomyces griseus strain M2; the latter classified on the basis of the presence of the enzymatic cofactor SF-420. The strains M3 and M2, inoculated in a basic salts medium with glucose as carbon source and added with 100 mg L(-1) of molinate, degraded respectively 35 and 51% of the herbicide in 36 days. Increasing concentrations of molinate, ranging from 50 to 200 mg L(-1) in glucose medium, did not affect the final ATP yield ofthe strain M2, but decreased the final growth yield and the ATP synthesis rate. Moreover, the onset of coenzyme SF-420 synthesis was progressively delayed. In contrast, surprisingly, SF-420 final yield and production rate were increased by progressive increasing concentrations of molinate in the mineral medium
Effects of the herbicide molinate on the metabolic activities of a degradative Streptomyces griseus strain / D. Daffonchio, G. Baggi, G.P. Molinari, G. Ranalli, C. Sorlini. - In: JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART B. PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES. - ISSN 0360-1234. - 31:2(1996), pp. 257-268 10.1080/03601239609372986. [10.1080/03601239609372986]
Effects of the herbicide molinate on the metabolic activities of a degradative Streptomyces griseus strain
D. Daffonchio;C. Sorlini
1996
Abstract
Cometabolic degradation of the herbicide molinate was tested using two microorganisms, Arthrobacter sp., strain M3 and Streptomyces griseus strain M2; the latter classified on the basis of the presence of the enzymatic cofactor SF-420. The strains M3 and M2, inoculated in a basic salts medium with glucose as carbon source and added with 100 mg L(-1) of molinate, degraded respectively 35 and 51% of the herbicide in 36 days. Increasing concentrations of molinate, ranging from 50 to 200 mg L(-1) in glucose medium, did not affect the final ATP yield ofthe strain M2, but decreased the final growth yield and the ATP synthesis rate. Moreover, the onset of coenzyme SF-420 synthesis was progressively delayed. In contrast, surprisingly, SF-420 final yield and production rate were increased by progressive increasing concentrations of molinate in the mineral mediumPubblicazioni consigliate
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