Results 1 to 10 of about 15,759 (224)

Diversity and characterization of the ammonia-oxidizing bacteria responsible for nitrification in tea field soils [PDF]

Scientific Reports
Ammonia-oxidizing bacteria (AOB), ammonia-oxidizing archaea (AOA), and comammox Nitrospira have been considered to coexist in acidic soils, oxidizing ammonia within their respective niches.
Luciano N. Aoyagi, Yong Wang, Tsubasa Ohbayashi, Yuhei Hirono, Masahito Hayatsu, Kanako Tago   +5 more
doaj   +2 more sources

Comparative enrichment of complete ammonium oxidation bacteria in floccular sludge reactors: Sequencing batch reactor vs. continuous stirred tank reactor [PDF]

Water Research X
This study attempted to compare the enrichment of complete ammonium oxidation (comammox) bacteria, which are affiliated with Nitrospira and not able to generate nitrous oxide (N2O, a potent greenhouse gas) through biological pathways, in two commonly ...
Ying Zhu, Jiaying Hou, Fangang Meng, Meiying Xu, Limin Lin, Linyan Yang, Xueming Chen   +6 more
doaj   +2 more sources

Analysis of 16S rRNA gene variability in soil nitrifying bacteria of the genus Nitrosomonas

BIO Web of Conferences, 2021
The main goal of the work was to assess variability of 16S rRNA gene sequence within the nitrifying bacterial genus Nitrosomonas to find specific sequences for its detection.
Nechayeva Anastasia, Boyarshin Konstantin, Bespalova Olga, Klyueva Violetta, Makanina Olesya, Batlutskaya Irina   +5 more
doaj   +1 more source

Biochar Addition Inhibits Nitrification by Shifting Community Structure of Ammonia-Oxidizing Microorganisms in Salt-Affected Irrigation-Silting Soil

Microorganisms, 2022
Biochar has been widely recognized as an effective and eco-friendly ameliorant for saline soils, but information about the mechanism of how biochar influences nitrification in salt-affected agroecosystem remains fragmented.
Rong-Jiang Yao, Hong-Qiang Li, Jing-Song Yang, Xiang-Ping Wang, Wen-Ping Xie, Xing Zhang   +5 more
doaj   +1 more source

Insights into activated sludge/Chlorella consortia under dark condition compared with light condition

Water Science and Technology, 2022
Bacteria–algae consortia in the light bring the benefit of O2 production and CO2 reduction for wastewater treatment, while the bottleneck for application is how it behaves in the dark.
Jie Fan, Xujie Zhang, Xingyu Du, Zhenlei Cai   +3 more
doaj   +1 more source

Small Sample Stress: Probing Oxygen-Deprived Ammonia-Oxidizing Bacteria with Raman Spectroscopy In Vivo

Microorganisms, 2020
The stress response of ammonia-oxidizing bacteria (AOB) to oxygen deprivation limits AOB growth and leads to different nitrification pathways that cause the release of greenhouse gases.
Ann-Kathrin Kniggendorf, Regina Nogueira, Somayeh Nasiri Bahmanabad, Andreas Pommerening-Röser, Bernhard Wilhelm Roth   +4 more
doaj   +1 more source

Nitrogen removal and ammonia-oxidising bacteria in a vertical flow constructed wetland treating inorganic wastewater [PDF]

, 2011
Nitrogen removal performance and the ammonia-oxidising bacterial (AOB) community were assessed in the batch loaded 1.3ha saturated surface vertical flow wetland at CSBP Ltd, a fertiliser and chemical manufacturer located in Kwinana, Western Australia ...
Dallas, S., Domingos, S.S., Felstead, S., Ho, G., Skillman, L.   +4 more
core   +2 more sources

Detecting and diversity analysis of amoA gene from ammonia-oxidizing bacteria in a nitrifying pool(硝化池中氨氧化细菌amoA基因的检测及其多样性研究)

Zhejiang Daxue xuebao. Lixue ban, 2004
为了分析污水处理系统中氨氧化细菌的种群组成，筛选合成了 一对对氨氧化细菌氨单加氧酶基因(amoA) 特异结合的引物序列，利用PCR技术对从活性污泥中抽提的细菌总DNA进行扩增，得到不同重组子的amoA序列片段.运用BLAST程序将测序结果与基因库中的公开序列进行比较，发现在该污水处理系统中分布有大量亚硝化单胞菌属(Nitrosomonas)细菌，其中最主要的是欧洲亚硝化单胞菌(Nitrosomonas europaea)，由此推测Nitrosomonas属细菌在该系统的氨氧化过程中起主导作用.
CHENLing(陈岭), MINGZhen-huan(明镇寰)   +1 more
doaj   +1 more source

Anoxic nitrification in marine sediments [PDF]

, 2004
Nitrate peaks are found in pore-water profiles in marine sediments at depths considerably below the conventional zone of oxic nitrification. These have been interpreted to represent nonsteady- state effects produced by the activity of nitrifying ...
Anschutz, P., Barnes, J., Davies, I.M., Freitag, T.E., Harris, S.J., Hayes, P.J., Krom, M.D., Mortimer, R.J.G., Prosser, J.I.   +8 more
core   +1 more source

Phylogenetic analysis reveals an ancient gene duplication as the origin of the MdtABC efflux pump. [PDF]

, 2020
The efflux pumps from the Resistance-Nodulation-Division family, RND, are main contributors to intrinsic antibiotic resistance in Gram-negative bacteria. Among this family, the MdtABC pump is unusual by having two inner membrane components.
Górecki, Kamil, McEvoy, Megan M
core   +2 more sources