DEGRADATION CHARACTERISTICS AND PATHWAY OF FENPROPATHRIN BY Rhodopseudomonas sp STRAIN PSB07-6
文献类型： 外文期刊
作者： Zhang, Songbai 2 ; Zhang, Deyong 1 ; Liu, Yong 1 ; Luo, Xiangwen 1 ; Cheng, Feixue 1 ; Luo, Yuanhua 1 ; Cheng, Ju'e 1 ; M 1 ;
作者机构： 1.Hunan Plant Protect Inst, Changsha 410125, Hunan, Peoples R China
2.Cent S Univ, Grad Coll, Branch Longping, Changsha 410125, Hunan, Peoples R China
3.Hunan Agr Univ, Changsha 410125, Hunan, Peoples R China
关键词： Biodegradation;fenpropathrin;degradation characteristics;pathway;Rhodopseudomonas sp PSB07-6
期刊名称：FRESENIUS ENVIRONMENTAL BULLETIN （ 影响因子：0.489； 五年影响因子：0.479 ）
ISSN： 1018-4619
年卷期： 2009 年 18 卷 11 期
页码：
收录情况： SCI
摘要： To isolate, select, identify and assess the potential for the biodegradation of fenpropathrin by photosynthetic bacterium, fenpropathrin-degrading photosynthetic bacteria were isolated by enrichment culture. Five isolates, which showed fenpropathrin biodegradation activity, were screened. Of these, strain PSB07-6 exhibited the highest fenpropathrin biodegradation potential, and was selected for further study. this strain was identified as Rhodopseudomonas sp. on the basis of morphology, physiological and biochemical characteristics, and 16S rRNA sequence analysis. The characteristics of this strain for degrading fenpropathrin were performed under different culture conditions. Optimum activity occurred at 35 degrees C and pH 7. Strain PSB07-6 degraded 67.43% fenpropathrin (200 mg L(-1)) within 15 days. This strain could also degrade effectively cypermethrin, cyfluthrin, biphenthrin and esfenvalerate, except deltamethrin. Gas chromatography with mass selective detector (GC-MS) identified m-phenoxyphenyl-acetonitrile as the stable metabolic product, and from this a fenpropathrin biodegradation pathway is proposed.
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