Results 91 to 100 of about 254,784 (203)

Cotton Farming Pesticides Affect Ileal Microbiota Activity and Expression of Virulome but Not Resistome or Metabolic Pathways in a Sedentary Wild Passerine

Environmental Toxicology, EarlyView.
ABSTRACT The increased use of agrochemicals to enhance crop production has had detrimental environmental effects including implication in the sharp decline of North American farmland‐breeding birds. Here, using a combination of deep shotgun metatranscriptomics and pesticide exposure data, we sought to assess whether exposure to cotton (Gossypium spp ...
Serguei V. Drovetski, Michelle L. Hladik, Carolina F. Ferreira, Dana W. Kolpin, Gary Voelker   +4 more
wiley   +1 more source

The response of nitrifier, N-fixer and denitrifier gene copy numbers to the nitrification inhibitor 3,4-dimethylpyrazole phosphate

Plant, Soil and Environment, 2013
A laboratory incubation experiment was conducted to examine the effects of 3,4-dimethylpyrazole phosphate (DMPP) on the transformation of urea-N and associated microbial communities in a low-fertility brown soil. The soil was supplied with urea at 180 kg
X.X. Dong, L.L. Zhang, Z.J. Wu, H.W. Zhang, P. Gong   +4 more
doaj   +1 more source

Oral microbiome and homeostatic regulation of periodontal health: From dysbiosis to precision intervention

VIEW, EarlyView.
Periodontal homeostasis is maintained by coordinated interactions between the oral microbiome and host. Dysbiosis disrupts this ecological balance and contributes to periodontal disease, whereas multi‐omics, artificial intelligence, and microbiome‐based interventions provide emerging opportunities for precision diagnosis, ecological restoration, and ...
Xu Liu, Lei Meng, Wenzhu Song, Peiyu Wang, Bin Liu, Shihui Liu, Qi He, Bing Sun, Wanheng Li, Zhiwei Guan, Rui Dong, Qiang Feng   +11 more
wiley   +1 more source

Emergent Macrophytes Act Selectively on Ammonia-Oxidizing Bacteria and Archaea [PDF]

Applied and Environmental Microbiology, 2012
ABSTRACT Ammonia-oxidizing bacteria (AOB) and archaea (AOA) were quantified in the sediments and roots of dominant macrophytes in eight neutral to alkaline coastal wetlands. The AOA dominated in most samples, but the bacterial-to-archaeal amoA gene ratios increased with increasing ammonium levels and pH in
Trias Mansilla, Rosalia, Ruiz Rueda, Olaya, García Lledó, Arantzazu, Vilar Sanz, Ariadna, López i Flores, Rocío, Quintana Pou, Xavier, Hallin, Sara, Bañeras Vives, Lluís   +7 more
openaire   +3 more sources

Abundance and diversity of nitrogen-removing microorganisms in the UASB-anammox reactor.

PLoS ONE, 2019
Anaerobic ammonium oxidation is considered to be the most economical and low-energy biological nitrogen removal process. So far, anammox bacteria have not yet been purified from cultures.
Rui Chen, Junqin Yao, Nuerla Ailijiang, Ruisang Liu, Lei Fang, Yinguang Chen   +5 more
doaj   +1 more source

Hydroxylamine as an intermediate in ammonia oxidation by globally abundant marine archaea [PDF]

Proceedings of the National Academy of Sciences, 2012
The ammonia-oxidizing archaea have recently been recognized as a significant component of many microbial communities in the biosphere. Although the overall stoichiometry of archaeal chemoautotrophic growth via ammonia (NH 3 ) oxidation to nitrite (NO 2 −
Neeraja, Vajrala, Willm, Martens-Habbena, Luis A, Sayavedra-Soto, Andrew, Schauer, Peter J, Bottomley, David A, Stahl, Daniel J, Arp   +6 more
openaire   +2 more sources

ADP-dependent Phosphofructokinases in Mesophilic and Thermophilic Methanogenic Archaea [PDF]

, 2001
Phosphofructokinase (PFK) is a key enzyme of the glycolytic pathway in all domains of life. Two related PFKs, ATP-dependent and PPi-dependent PFK, have been distinguished in bacteria and eucarya, as well as in some archaea.
Kengen, S.W.M., Vos, W.M., de, Verhees, C.H., Tuininga, J.E., van der Oost, J., Stams, A.J.M., Oost, J., van der, de Vos, W.M.   +7 more
core   +1 more source

Ammonia manipulates the ammonia-oxidizing archaea and bacteria in the coastal sediment-water microcosms

, 2015
Ammonia was observed as a potential significant factor to manipulate the abundance and activity of ammonia-oxidizing microorganisms (AOMs) in water environments. For the first time, this study confirmed this phenomenon by laboratory cultivation.
Dai, Tianjiao, Sun, Renhua, Wen, Donghui, Zhang, Yan, Chen, Lujun   +4 more
core   +1 more source

Cultivation of Autotrophic Ammonia-Oxidizing Archaea from Marine Sediments in Coculture with Sulfur-Oxidizing Bacteria

, 2010
The role of ammonia-oxidizing archaea (AOA) in nitrogen cycling in marine sediments remains poorly characterized. In this study, we enriched and characterized AOA from marine sediments. Group I.1a crenarchaea closely related to those identified in marine
Byoung-Joon Park, Stefan Schouten, Sung-Keun Rhee, Jaap S. Sinninghe Damsté, Dae-No Yoon, Soo-Je Park   +5 more
core   +1 more source

Relative contributions of archaea and bacteria to aerobic ammonia oxidation in the environment [PDF]

Environmental Microbiology, 2008
Summary Traditionally, organisms responsible for major biogeochemical cycling processes have been determined by physiological characterization of environmental isolates in laboratory culture. Molecular techniques have, however, confirmed the widespread occurrence of abundant bacterial and archaeal groups with no cultivated ...
James I, Prosser, Graeme W, Nicol
openaire   +2 more sources