Quorum sensing systems regulate heterotrophic nitrification-aerobic denitrification by changing the activity of nitrogen-cycling enzymes
作者机构：State Key Laboratory of Urban Water Resource and EnvironmentSchool of EnvironmentHarbin Institute of TechnologyHarbin150090China
出 版 物：《Environmental Science and Ecotechnology》 (环境科学与生态技术（英文）)
年 卷 期：2020年第2卷第2期
页 面：40-47页
核心收录：
学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学]
基 金：supported by the National Key Research and Development Program of China(No.2018YFD1100503)
主 题：Heterotrophic nitrification-aerobic denitrification Quorum sensing Pseudomonas aeruginosa Nitrogen cycle Wastewater treatment
摘 要：Heterotrophic nitrification-aerobic denitrification(HNAD)is essential in diverse nitrogen-transforming *** HNAD is modulated by quorum sensing(QS)systems is still *** QS system in Pseudomonas aeruginosa manipulates colony ***,we described the influence of the Pseudomonas quinolone signal(PQS)and N-acyl-L-homoserine lactone(AHL)on *** HNAD of *** was inhibited by the oversecretion of ***-or PQS-deficient *** mutants had a higher ability for nitrogen *** inhibited heterotrophic nitrification mainly via controlling the activity of nitrite oxidoreductase(NXR)and the depressed aerobic denitrification by regulating the catalytic abilities of nitric oxide reductase(NOR),nitrite reductase(NIR),and nitrate reductase(NAR).The addition of citrate as the sole carbon source increased the nitrogen removal efficiency compared with other carbon ***,as the sole nitrogen source,could be used entirely with only the moderate concentration of PQS *** and PQS controlled both nitrification and denitrification,suggesting that QS plays an important role in nitrogen cycle under aerobic conditions.
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