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Mixed nitrifying bacteria culture under different temperature dropping strategies: Nitrification performance, activity, and community

文献类型：期刊论文

作者Chen, Maoxia1,2,3; Chen, Yangwu1,2,3; Dong, Shiyang1,2,3; Lan, Shuhuan1,3; Zhou, Houzhen1,3; Tan, Zhouliang1,3; Li, Xudong1,3
刊名CHEMOSPHERE
出版日期2018-03-01
卷号195期号:2018页码:800-809
关键词Mixed nitrifying bacteria culture Low-temperature stress Nitrification rate ATP SOD Microbial community
ISSN号0045-6535
DOI10.1016/j.chemosphere.2017.12.129
产权排序1
文献子类Article
英文摘要In this study, the nitrification performance, metabolic activity, antioxidant enzyme activity as well as bacterial community of mixed nitrifying bacteria culture under different temperature dropping strategies [(#1) growth temperature kept at 20 degrees C; (#2) sharp1 decreased from 20 degrees C to 10 degrees C; (#3) growth at 20 degrees C for 6 days followed by sharp decrease to 10 degrees C; and (#4) gradual decreased from 20 degrees C to 10 degrees C] were evaluated. It was shown that acclimation at 20 degrees C for 6 days allowed to maintain better nitrification activity at 10 degrees C. The nitrite oxidation capacity of nitrifiers was significantly correlated with the relative light unit (RLU) (p<.05) and the fluctuation of superoxide dismutase (SOD) enzyme activity (p<.01). With serial #3 showed the highest RLU levels and the least SOD enzyme fluctuation as compared to serials #2 and #4. Throughout the experimental period, Nitrosospira and Nitrosomonas as well as Nitrospira were identified as the predominant ammonia-oxidizing bacteria (AOB) and nitrate-oxidizing bacteria (NOB). The dynamic change of AOB/NOB ratios and nitrification activity in serials #2-#4 demonstrated that AOB recovered better than NOB with long-term 10 degrees C exposure, and the nitrification performance was mainly limited by the nitrite oxidation capacity of NOB. Applying 6 days acclimation at 20 degrees C was beneficial for the mixed nitrifying bacteria culture to cope with low temperature (10 degrees C) stress, possibly due to the maintenance of metabolic activity, antioxidant enzyme activity stability as well as appropriate AOB/NOB ratio. (C) 2017 Elsevier Ltd. All rights reserved.
学科主题Environment ; Ecology
URL标识查看原文
WOS关键词AMMONIA-OXIDIZING BACTERIA ; BIOLOGICAL PHOSPHORUS REMOVAL ; WATER TREATMENT PLANTS ; GRADIENT GEL-ELECTROPHORESIS ; FREE-NITROUS-ACID ; WASTE-WATER ; BIOFILM REACTOR ; ADENOSINE-TRIPHOSPHATE ; NITRITE ACCUMULATION ; COLD TEMPERATURES
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000424172400085
出版者PERGAMON-ELSEVIER SCIENCE LTD
源URL[http://210.75.237.14/handle/351003/30322]  
专题环境治理与食品安全领域_应用与环境微生物研究
环境治理与食品安全领域_中国科学院环境与应用微生物重点实验室
作者单位1.Chinese Acad Sci, Environm Microbiol Key Lab Sichuan Prov, Chengdu Inst Biol, Chengdu 610041, Sichuan, Peoples R China;
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Chengdu Inst Biol, Key Lab Environm & Appl Microbiol, Chengdu 610041, Sichuan, Peoples R China;
推荐引用方式
GB/T 7714		 Chen, Maoxia,Chen, Yangwu,Dong, Shiyang,et al. Mixed nitrifying bacteria culture under different temperature dropping strategies: Nitrification performance, activity, and community[J]. CHEMOSPHERE,2018,195(2018):800-809.
APA Chen, Maoxia.,Chen, Yangwu.,Dong, Shiyang.,Lan, Shuhuan.,Zhou, Houzhen.,...&Li, Xudong.(2018).Mixed nitrifying bacteria culture under different temperature dropping strategies: Nitrification performance, activity, and community.CHEMOSPHERE,195(2018),800-809.
MLA Chen, Maoxia,et al."Mixed nitrifying bacteria culture under different temperature dropping strategies: Nitrification performance, activity, and community".CHEMOSPHERE 195.2018(2018):800-809.

入库方式： OAI收割

来源：成都生物研究所

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