%0 Journal Article
%T Degradation of P-nitrophenol by a Mangrove Bacterial Rhodococcus sp. Ns<br>Rhodococcus sp. Ns对硝基苯酚的好氧生物降解
%A WAN Nian sheng
%A GU Ji dong
%A HAO Fu qin
%A XIAO Xiang qun
%A <br>万年升
%A 顾继东
%A 郝伏勤
%A 肖翔群
%J 环境科学
%D 2007
%I 
%X A bacterium capable of utilizing p-nitrophenol (PNP) as the sole nitrogen, carbon, and energy source was isolated from mangrove sediment. This bacterium was confirmed based on 16S rDNA sequence analysis and taxonomic analysis as being a member of the genus Rhodococcus and was designated strain Ns. The strain Ns could tolerate high concentrations of PNP up to 1.5 mmol/L and complete degradation was achieved in four days at 30 degrees C in the dark under aerobic conditions. Biodegradation of PNP quickly occurred at optimal pH above 5.0, and at least 5 per thousand salinity. Bacterial growth on PNP was observed with the simultaneous production of 4-nitrocatechol, which was also degraded by the same bacterium, as a degradation intermediate, Moreover, Rhodococcus sp. Ns was able to also deplete 2-nitrophenol(ONP) as the sole source of carbon, nitrogen and energy, but not 3-nitrophenol. The experimental results show that bacteria indigenous to the natural wetland sediment are capable of complete degradation of PNP and ONP.
%K p-nitrophenol
%K o-nitrophenol
%K degradation
%K Rhodococcus sp<br>对硝基苯酚
%K 邻硝基苯酚
%K 降解
%K 红球菌（Rhodococcus
%K sp.）
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=9AEF47E0F09C82FC3E72929C2583219F&yid=A732AF04DDA03BB3&vid=D3E34374A0D77D7F&iid=0B39A22176CE99FB&sid=6D6BFCF0101BC091&eid=8D75AD3BD0D1BCC5&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=30