| Literature DB >> 15876449 |
Mia B Gents1, Susan T Nielsen, Anne G Mortensen, Carsten Christophersen, Inge S Fomsgaard.
Abstract
Three degradation experiments were performed to examine the formation of transformation products from 2-benzoxazolinone (BOA) in different soil types and concentrations. In two experiments using BOA in low concentration (400 microgkg(-1)) only one unidentified transformation product was found, whereas in the degradation experiment in high concentration (400 mgkg(-1)) several metabolites occurred. Two of these metabolites, 2-amino-(3H)-phenoxazin-3-one (APO); and 2-acetylamino-(3H)-phenoxazin-3-one (AAPO) were synthesized to prove their identity. This is the first time that the successive formation of these types of compounds from BOA is shown in soil. A number of other APO related transformation products were detected and provisionally characterized. The formation of APO, which is a much more biologically active compound than BOA, and the concurrent formation of a number of other APO-related metabolites in soil underline the importance of performing transformation studies as part of the evaluation of the effect of allelochemicals on weeds and soil-borne diseases.Entities:
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Year: 2005 PMID： 15876449 DOI： 10.1016/j.chemosphere.2005.03.068
Source DB: PubMed Journal: Chemosphere ISSN： 0045-6535 Impact factor: 7.086