Results 1 to 10 of about 2,897 (133)

Linking 16S rRNA Gene Classification to amoA Gene Taxonomy Reveals Environmental Distribution of Ammonia-Oxidizing Archaeal Clades in Peatland Soils [PDF]

mSystems, 2021
A highly resolved taxonomy for ammonia-oxidizing archaea (AOA) based on the alpha subunit of ammonia monooxygenase (amoA) was recently established, which uncovered novel environmental patterns of AOA, challenging previous generalizations.
Haitao Wang, Alexandre Bagnoud, Rafael I. Ponce-Toledo, Melina Kerou, Micha Weil, Christa Schleper, Tim Urich   +6 more
doaj   +4 more sources

Linking Abundance and Activity of Ammonia-Oxidising Bacteria and Archaea in an Agriculturally Impacted First-Order Stream. [PDF]

Environ Microbiol
Ammonia‐oxidising archaea (AOA) and bacteria (AOB) coexist in streambed sediments, but their contributions to nitrification remain unresolved. Using field sampling, sequencing, qPCR, microcosm incubations and modelling, we show that AOB dominated nitrification in streambed sediments despite lower abundance, emphasizing the importance of distinguishing ...
Wang Z, Störiko A, Jung A, Straub D, Cirpka OA, Pagel H, Lueders T.   +6 more
europepmc   +2 more sources

amoA-encoding archaea and thaumarchaeol in the lakes on the northeastern Qinghai-Tibetan Plateau, China

Frontiers in Microbiology, 2013
All known ammonia-oxidizing archaea (AOA) belong to the phylum Thaumarchaeota within the domain Archaea. AOA possess the diagnostic amoA gene (encoding the alpha subunit of ammonia monooxygenase) and produce lipid biomarker thaumarchaeol.
Jian eYang, Hongchen eJiang, Hailiang eDong, Huanye eWang, Geng eWu, Weiguo eHou, Weiguo eLiu, Chuanlun eZhang, Yongjuan eSun, Zhongping eLai   +9 more
doaj   +3 more sources

Synergistic effects of AWD irrigation and potassium application on rice yield and paddy field greenhouse gas emissions [PDF]

Frontiers in Plant Science
IntroductionIrrigation and fertilization are significant for rice productivity and environmental benefits. Evidences on how alternate wetting-drying irrigation (IAWD) and potassium (K) together influence greenhouse gas emission (GHG) and rice yield still
Dandan Wu, Yinghao Li, Yinghao Li, Zhengyuqi Ma, Shujun Wang, Taotao Chen, Hongtao Zou, Hongtao Zou, Jingjun Li, Yang Gao   +9 more
doaj   +2 more sources

AmoA-Targeted Polymerase Chain Reaction Primers for the Specific Detection and Quantification of Comammox Nitrospira in the Environment

Frontiers in Microbiology, 2017
Nitrification, the oxidation of ammonia via nitrite to nitrate, has always been considered to be catalyzed by the concerted activity of ammonia- and nitrite-oxidizing microorganisms.
Petra Pjevac, Clemens Schauberger, Lianna Poghosyan, Craig W. Herbold, Maartje A. H. J. van Kessel, Anne Daebeler, Michaela Steinberger, Mike S. M. Jetten, Sebastian Lücker, Michael Wagner, Holger Daims   +10 more
doaj   +3 more sources

Nitrogen addition altered the microbial functional potentials of carbon and nitrogen transformation in alpine steppe soils on the Tibetan Plateau

Global Ecology and Conservation, 2021
The microbial-mediated functional potentials of soil can be reflected by the abundance of corresponding microbial functional genes (MFGs). Few studies have simultaneously examined the responses of multiple key MFGs involving soil carbon (C) and nitrogen (
Yang Hu, Hongmao Jiang, Youchao Chen, Ziwei Wang, Yan Yan, Ping Sun, Xuyang Lu   +6 more
doaj   +1 more source

Temperature responses of ammonia-oxidizing prokaryotes in freshwater sediment microcosms. [PDF]

PLoS ONE, 2014
In order to investigate the effects of temperature on the abundances and community compositions of ammonia-oxidizing archaea (AOA) and bacteria (AOB), lake microcosms were constructed and incubated at 15°C, 25°C and 35°C for 40 days, respectively ...
Jin Zeng, Dayong Zhao, Zhongbo Yu, Rui Huang, Qinglong L Wu   +4 more
doaj   +1 more source

Diversity and distribution of amoA-type nitrifying and nirS-type denitrifying microbial communities in the Yangtze River estuary [PDF]

Biogeosciences, 2014
Coupled nitrification–denitrification plays a critical role in the removal of excess nitrogen, which is chiefly caused by humans, to mitigate estuary and coastal eutrophication.
Y. Zhang, X. Xie, N. Jiao, S. S.-Y. Hsiao, S.-J. Kao   +4 more
doaj   +1 more source

Saline and alkaline stresses alter soil properties and composition and structure of gene-based nitrifier and denitrifier communities in a calcareous desert soil

BMC Microbiology, 2021
Background Saline and alkaline stresses damages the health of soil systems. Meanwhile, little is known about how saline or alkaline stress affects soil nitrifier and denitrifier communities.
Jiaxin Guo, Yongxue Zhou, Huijuan Guo, Wei Min   +3 more
doaj   +1 more source

Aquarium nitrification revisited: Thaumarchaeota are the dominant ammonia oxidizers in freshwater aquarium biofilters. [PDF]

PLoS ONE, 2011
Ammonia-oxidizing archaea (AOA) outnumber ammonia-oxidizing bacteria (AOB) in many terrestrial and aquatic environments. Although nitrification is the primary function of aquarium biofilters, very few studies have investigated the microorganisms ...
Laura A Sauder, Katja Engel, Jennifer C Stearns, Andre P Masella, Richard Pawliszyn, Josh D Neufeld   +5 more
doaj   +1 more source