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

doi:10.1016/j.chemosphere.2017.12.129

CORC > 成都生物研究所 > 中国科学院成都生物研究所 > 食品安全与环境治理领域 > 应用与环境微生物研究

	Mixed nitrifying bacteria culture under different temperature dropping strategies: Nitrification performance, activity, and community
	Chen, Maoxia 1,2,3; Chen, Yangwu 1,2,3; Dong, Shiyang 1,2,3; Lan, Shuhuan 1,3; Zhou, Houzhen 1,3; Tan, Zhouliang 1,3; Li, Xudong 1,3
刊名	CHEMOSPHERE
	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
DOI	10.1016/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
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000424172400085
内容类型	期刊论文
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
作者单位	1.Chinese Acad Sci, Chengdu Inst Biol, Key Lab Environm & Appl Microbiol, Chengdu 610041, Sichuan, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Environm Microbiol Key Lab Sichuan Prov, Chengdu Inst Biol, 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.