Tolerance of an aerobic denitrifier (Pseudomonas stutzeri) to high O2 concentrations

Biotechnology Letters
Bin JiKai Yang

Abstract

An aerobic denitrifier was isolated from activated sludge and the isolate possessed an average removal rate of 5.7 mg NO3 (-)-N l(-1) h(-1) without accumulation of NO2 (-)-N (less than 2.1 mg l(-1)). The average removal efficiency of nitrate was 93.7 % in 24 h, when the dissolved oxygen (DO) concentrations ranged from 3.2 to 17.5 mg l(-1). The activity of both nap (periplasmic nitrate reductase) and nir (nitrite reductase), whose corresponding genes (napA and nirS) were amplified by touchdown PCR, could be responsible for the tolerance of DO concentrations. Other three genes relating to narG, norB and nosZ were noted to involve in isolate strain.

References

Jul 14, 2004·Biochemical and Biophysical Research Communications·Thomas HettmannStephan Diekmann
Aug 9, 2005·Biotechnology Letters·Hung-Soo JooMakoto Shoda
Dec 30, 2008·Journal of Bioscience and Bioengineering·Mia KimSang-Joon Lee
Feb 3, 2012·Journal of Bioscience and Bioengineering·Qian Chen, Jinren Ni

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Citations

Mar 7, 2014·Bioresource Technology·Bin JiKai Yang
Jun 22, 2017·World Journal of Microbiology & Biotechnology·Cong DuFang Ma
Apr 18, 2019·Water Environment Research : a Research Publication of the Water Environment Federation·Xinxin ShiTinglin Huang
Aug 15, 2014·Bioprocess and Biosystems Engineering·Bin JiHuining Zhang
Oct 7, 2019·Journal of Applied Microbiology·Ankita RajtaPriyanka Pathania

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