Benezet H J, Knowles C O
Arch Environ Contam Toxicol. 1982;11(1):107-10. doi: 10.1007/BF01055195.
Degradation of the cotton defoliant thidiazuron and its photoproduct photothidiazuron by soil and thirteen species of microorganisms was examined. Aspergillus versicolor, Torula rosea, and Flavobacter sp. were most active in degrading thidiazuron. Unknown water-soluble metabolites and phenylurea were the major products. A. versicolor and Penicillium cyclopium were most active in degrading photothidiazuron. 4-Hydroxyphenylphotothidiazuron was the major organosoluble product formed by A. versicolor; phenylurea and an unidentified metabolite constituted the major organosoluble products from P. cyclopium. Both microbes also formed appreciable water-soluble metabolites. Radioactive carbon dioxide was formed from thidiazuron-aniline-14C by Oscillatoria sp. but not by Chlorella sp., suggesting that the former algal species utilized the defoliant as an energy source.
研究了土壤和13种微生物对棉花脱叶剂噻苯隆及其光产物光噻苯隆的降解情况。杂色曲霉、玫瑰色掷孢酵母和黄杆菌属在降解噻苯隆方面最为活跃。未知的水溶性代谢产物和苯基脲是主要产物。杂色曲霉和环青霉在降解光噻苯隆方面最为活跃。4-羟基苯基光噻苯隆是杂色曲霉形成的主要有机可溶性产物；苯基脲和一种未鉴定的代谢产物是环青霉形成的主要有机可溶性产物。这两种微生物还形成了大量的水溶性代谢产物。颤藻属可利用14C标记的噻苯隆-苯胺产生放射性二氧化碳，而小球藻属则不能，这表明前一种藻类将脱叶剂用作能源。
