Ecotoxicological assessment of PAHs and their dead-end metabolites after degradation by Mycobacterium sp. strain SNP11

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• 作者：Christophe Pagnout ; Claudine Rast ; Anne-Marie Veber ; Pascal Poupin and Jean-Franç ; ois Fé ; rard
• 关键词：Ecotoxicity ; Pyrene ; Fluoranthene ; Phenanthrene ; Metabolites ; Mycobacterium sp. SNP11 ; Biodegradation
• 刊名：Ecotoxicology and Environmental Safety
• 出版年：2006
• 期刊代码：77_01476513
• 类别：env
• 出版时间：October 2006
• 卷：65
• 期：2
• 页码：151-158
• 文件大小：189 K

摘要

Mycobacterium sp. SNP11 has a high PAH biodegradation potential. In this paper, the toxicity of pyrene, fluoranthene, phenanthrene, and their dead-end metabolites, accumulated in the media after biodegradation by Mycobacterium sp. SNP11, were evaluated by a screening battery of acute, chronic, and genotoxic tests. According to the bioassays, performed on bacteria (Vibrio fischeri, Salmonella typhimurium strains TA1535/pSK1002, TA97a, TA98, TA100), algae (Pseudokirchneriella subcapitata), and crustaceans (Daphnia magna, Ceriodaphnia dubia), total disappearance or a very significant reduction of the (geno)toxic potential was observed after PAH degradation by Mycobacterium sp. SNP11.