Results 181 to 190 of about 2,518,592 (205)

Elevated N2O emission by the rice roots: based on the abundances of narG and bacterial amoA genes

Environmental Science and Pollution Research, 2016
Rice fields are an important source of nitrous oxide (N2O), where rice plants could act as a key factor controlling N2O fluxes during the flooding-drying process; however, the microbial driving mechanisms are unclear. In this study, specially designed equipment was used to grow rice plants and collect emitted N2O from the root-growing zone (zone A ...
Zhenxing, Zhang, Wenzhao, Zhang, Huicui, Yang, Rong, Sheng, Wenxue, Wei, Hongling, Qin   +5 more
openaire   +2 more sources

Archaeal amoA genes outnumber bacterial amoA genes in municipal wastewater treatment plants in Bangkok.

Microbial ecology, 2012
The contribution of ammonia-oxidizing archaea (AOA) to nitrogen removal in wastewater treatment plants (WWTPs) remains unknown. This study investigated the abundance of archaeal (AOA) and bacterial (ammonia-oxidizing bacteria (AOB)) amoA genes in eight of Bangkok's municipal WWTPs.
Pantip, Kayee, Puntipar, Sonthiphand, Chaiwat, Rongsayamanont, Tawan, Limpiyakorn   +3 more
openaire   +1 more source

Transcriptional responses of bacterial amoA gene to dimethyl sulfide inhibition in complex microbial communities

Bioresource Technology, 2014
This study presented an approach by combining the real-time reverse transcription polymerase chain reaction with the terminal restriction fragment length polymorphism (T-RFLP) to investigate transcriptional responses of ammonia-oxidizing bacteria (AOB) to dimethyl sulfide (DMS) inhibition.
Toshikazu, Fukushima, Liang-Ming, Whang, Ya-Ching, Lee, Dyah Wulandari, Putri, Po-Chun, Chen, Yi-Ju, Wu   +5 more
openaire   +2 more sources

Diversity and abundance of archaeal amoA genes in the permanent and temporary oxygen minimum zones of Indian Ocean

2022
Abstract Oxygen minimum zones are results of oxygen consumption exceeding the oxygen availability in stratified water columns of the marine environment. We compared the ammonia monooxygenase subunit A (amoA) gene abundance and the diversity of ammonia-oxidising archaea (AOA) in the Arabian Sea (AS) with those of the Bay of Bengal (BoB).
Prasannakumar Chinnamani, Anandjothi Elamaran   +1 more
openaire   +1 more source

Abundance and diversity based on amoA genes of ammonia-oxidizing archaea and bacteria in ten wastewater treatment systems

Applied Microbiology and Biotechnology, 2013
The abundance and diversity of amoA genes of ammonia-oxidizing archaea (AOA) and bacteria (AOB) were investigated in ten wastewater treatment systems (WTSs) by polymerase chain reaction (PCR), cloning, sequencing, and quantitative real-time PCR (qPCR). The ten WTSs included four full-scale municipal WTSs, three full-scale industrial WTSs, and three lab-
Jingfeng, Gao, Xin, Luo, Guixia, Wu, Ting, Li, Yongzhen, Peng   +4 more
openaire   +2 more sources

Abundance and community structure of ammonium monooxygenase (amoA) genes in the wet season of liaohe estuary sediments

Continental Shelf Research, 2020
Abstract Ammonia oxidation is an important part of the global nitrogen cycle. Ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) are important players in the ammoxidation process. In this study, 13 sediment samples from the Liaohe estuary were collected in the wet season.
Hongxia Ming, Huizhen Zhang, Quanrui Chen, Yantao Wang, Jie Su, Xiaohui Zhao, Jingfeng Fan   +6 more
openaire   +1 more source

Effects of earthworms on nitrogen transformation and the correspond genes (amoA and nirS) in vermicomposting of sewage sludge and rice straw

Bioresource Technology, 2019
The effects of earthworms on nitrogen transformation and the responsible functional genes during disposal of sewage sludge and rice straw were investigated in this study. Vermicomposting resulted in the lower pH and total organic carbon (TOC) compared to the control treatment without earthworms.
Baoyi, Lv, Di, Zhang, Qihao, Chen, Yuxue, Cui   +3 more
openaire   +2 more sources

Microbial Community that Catalyzes Partial Nitrification at Low Oxygen Atmosphere as Revealed by 16S rRNA and amoA Genes

Journal of Bioscience and Bioengineering, 2007
We previously reported that partial nitrification in the down-flow hanging sponge (DHS) system was satisfactorily accomplished under oxygen-limited conditions [Chuang et al., Water Res., 41, 295-302 (2007)]. In this study, we investigated the microbes that are responsible for the partial nitrification in this unique system by 16S rRNA- and amoA-based ...
Hui-Ping, Chuang, Hiroyuki, Imachi, Madan, Tandukar, Shuji, Kawakami, Hideki, Harada, Akiyoshi, Ohashi   +5 more
openaire   +2 more sources

The Influence of Different Land Uses on the Structure of Archaeal Communities in Amazonian Anthrosols Based on 16S rRNA and amoA Genes

Microbial Ecology, 2010
Soil from the Amazonian region is usually regarded as unsuitable for agriculture because of its low organic matter content and low pH; however, this region also contains extremely rich soil, the Terra Preta Anthrosol. A diverse archaeal community usually inhabits acidic soils, such as those found in the Amazon.
Rodrigo Gouvêa, Taketani, Siu Mui, Tsai
openaire   +2 more sources

Bacterial and archaeal amoA gene distribution covaries with soil nitrification properties across a range of land uses

Environmental Microbiology Reports, 2011
Summary Ammonia‐oxidizing bacteria and ammonia‐oxidizing archaea are commonly found together in soils, yet the factors influencing their relative distribution and activity remain unclear. We examined archaeal and bacterial amoA gene distribution, and used a novel bioassay to
Lydia H, Zeglin, Anne E, Taylor, David D, Myrold, Peter J, Bottomley   +3 more
openaire   +2 more sources