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Degradation of p-nitrophenol by Achromobacter xylosoxidans Ns isolated from wetland sediment
Wan, N; Gu, JD; Yan, Y; jdgu@hkucc.hku.hk
2007
发表期刊INTERNATIONAL BIODETERIORATION & BIODEGRADATION
ISSN0964-8305
卷号59期号:2页码:90-96
摘要Achromobacter xylosoxidans Ns strain, capable of utilizing p-nitrophenol (PNP) as the sole source of carbon, energy, and nitrogen, was isolated from wetland sediment and confirmed based on 16S rRNA gene sequence. The strain Ns could tolerate concentrations of PNP up to 1.8mM, and degradation of PNP was achieved in 7d at 30 degrees C in the dark under aerobic conditions. Biodegradation of PNP occurred quickly at an optimal pH of 7.0 and higher, and at <= 0.5% salt (NaCl) contents. During bacterial growth on PNP, 4-nitrocatechol was observed as a key degradation intermediate using a combination of techniques, including HPLC, UV-visible spectra, and comparison with the authentic standard. In a similar way, a second degradation intermediate was identified to be 1,2,4-benzenetriol. Moreover, A. xylosoxidans Ns could also degrade 3-nitrophenol as the sole source of carbon, nitrogen, and energy, but 2-nitrophenol could not. The experimental results showed that bacteria indigenous to the wetland sediment are capable of degradading PNP and chemicals with similar structures. (c) 2006 Elsevier Ltd. All rights reserved.
部门归属Univ Hong Kong, Dept Ecol & Biodivers, Lab Environm Microbiol & Toxicol, Hong Kong, Hong Kong, Peoples R China; Chinese Acad Sci, S China Sea Inst Oceanog, Guangzhou 510301, Peoples R China
关键词Biodegradation P-nitrophenol 3-nitrophenol Achroinobacter Xylosoxidans Wetland
学科领域Biotechnology & Applied Microbiology ; Environmental Sciences
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收录类别sci
资助项目海洋地质
WOS记录号WOS:000244805600003
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被引频次:48[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/4508
专题中科院边缘海地质重点实验室
通讯作者jdgu@hkucc.hku.hk
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Wan, N,Gu, JD,Yan, Y,et al. Degradation of p-nitrophenol by Achromobacter xylosoxidans Ns isolated from wetland sediment[J]. INTERNATIONAL BIODETERIORATION & BIODEGRADATION,2007,59(2):90-96.
APA Wan, N,Gu, JD,Yan, Y,&jdgu@hkucc.hku.hk.(2007).Degradation of p-nitrophenol by Achromobacter xylosoxidans Ns isolated from wetland sediment.INTERNATIONAL BIODETERIORATION & BIODEGRADATION,59(2),90-96.
MLA Wan, N,et al."Degradation of p-nitrophenol by Achromobacter xylosoxidans Ns isolated from wetland sediment".INTERNATIONAL BIODETERIORATION & BIODEGRADATION 59.2(2007):90-96.
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