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Zanardini, E. et al.

Zanardini, Negri, Boschin, D'Agostina, Valle, Arnoldi, Sorlini,

Biodegradation of chlorsulfuron and metsulfuron-methyl by Aspergillus niger.

In this work, investigations were performed under laboratory conditions of the degradation ability by a common soil fungus, Aspergillus niger, toward chlorsulfuron and metsulfuron-methyl. The results were very encouraging (79% for chlorsulfuron and 61% for metsulfuron-methyl of total degradation), especially compared to those registered in our previous studies with a Pseudomonas fluorescens strain B2 (about 21 to 32%). Furthermore, the chemical degradation of the two compounds was studied and two products (1[2-methoxy-benzene-1-sulfonyl]-7-acetyltriuret and 1[2-chlorobenzene-1-sulfonyl]-7-acetyltriuret) were isolated and characterised by hydrolysis in acidic conditions. Our aim in the future will be the identification of intermediate metabolites by HPLC and LC-MS analyses in order to identify the degradative pathway by the fungal strain and to compare this to those obtained by chemical degradation and by P. fluorescens strain.[1]

References

Biodegradation of chlorsulfuron and metsulfuron-methyl by Aspergillus niger. Zanardini, E., Negri, M., Boschin, G., D'Agostina, A., Valle, A., Arnoldi, A., Sorlini, C. ScientificWorldJournal (2002) [Pubmed]

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