Results 71 to 80 of about 2,518,592 (205)

Purple Sulfur Bacteria Dominate Microbial Community in Brazilian Limestone Cave

Microorganisms, 2019
The mineralogical composition of caves makes the environment ideal for inhabitation by microbes. However, the bacterial diversity in the cave ecosystem remains largely unexplored.
Eric L. S. Marques, João C. T. Dias, Eduardo Gross, Adriana B. de Cerqueira e Silva, Suzana R. de Moura, Rachel P. Rezende   +5 more
doaj   +1 more source

Environmental Factors, More Than Spatial Distance, Explain Community Structure of Soil Ammonia-Oxidizers in Wetlands on the Qinghai–Tibetan Plateau

Microorganisms, 2020
In wetland ecosystems, ammonia oxidation highly depends on the activity of ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB), which are, therefore, important for studying nitrogen cycling.
Wen Zhou, Xiaoliang Jiang, Jian Ouyang, Bei Lu, Wenzhi Liu, Guihua Liu   +5 more
doaj   +1 more source

The Effects of Microplastics and Additives on Ecosystem Function, Structure, and Signaling

Global Change Biology, Volume 32, Issue 8, August 2026.
Microplastics disrupt ecosystem signaling through olfactory traps, altering predator–prey signaling and disrupting microbial communication and quorum sensing. ABSTRACT Microplastics (MPs) and their associated chemical additives are pervasive contaminants whose ecological impacts extend beyond organismal toxicity to fundamentally alter ecosystem ...
Sally Gaw, Maia Raymundo, Ciemon F. Caballes   +2 more
wiley   +1 more source

A gene encoding a membrane protein exists upstream of the amoA/amoB genes in ammonia oxidizing bacteria: a third member of the amo operon? [PDF]

FEMS Microbiology Letters, 2006
The gene cluster encoding ammonia monooxygenase (AMO) in the chemolithotrophic soil bacterium Nitrosospira sp. NpAV was found to contain a third open reading frame, termed amoC, upstream of the genes amoA and amoB that encode the subunits of AMO. The amoC gene and its flanking regions were isolated and sequenced from a 4.4 kb EcoRI fragment that ...
Klotz, M. G., Alzerreca, J. J., Norton, Jeanette M.   +2 more
openaire   +2 more sources

Small-scale variation of ammonia oxidisers within intertidal sediments dominated by ammonia-oxidising bacteria Nitrosomonas sp. amoA genes and transcripts

Scientific Reports, 2017
While numerous studies have investigated the abundance of ammonia oxidising bacteria and archaea (AOB/AOA) via the ammonia monooxygenase gene amoA, less is known about their small-scale variation and if amoA gene abundance equates to activity.
Aoife M. Duff, Li-Mei Zhang, Cindy J. Smith   +2 more
doaj   +1 more source

Nitrous oxide emissions from ephemeral wetland soils are correlated with microbial community composition

Frontiers in Microbiology, 2011
Nitrous oxide (N2O) is a greenhouse gas with a global warming potential far exceeding that of CO2. Soil N2O emissions are a product of two microbially mediated processes: nitrification and denitrification.
Wai eMa, Richard eFarrell, Steven eSiciliano   +2 more
doaj   +1 more source

Substrate‐driven enrichment and eDNA metabarcoding reveal indigenous microbiomes in mangrove sediments with potential for ammonia and nitrite transformation

Journal of the World Aquaculture Society, Volume 57, Issue 4, August 2026.
Abstract Effective management of ammonia and nitrite remains a major challenge in intensive shrimp aquaculture, where excessive nitrogen loading compromises water quality and animal health. Indigenous microbial communities inhabiting mangrove sediments are widely considered potential sources of ammonia‐ and nitrite‐transforming microorganisms; however,
Muhamad Amin, Hussein Taha, Norhayati Ahmad, Ledhyane Ika Harlyan, Agustina Agustina, Ren Fitriadi, Supono Supono, Takaomi Arai   +7 more
wiley   +1 more source

Archaeal amoA gene diversity points to distinct biogeography of ammonia-oxidizing Crenarchaeota in the ocean [PDF]

, 2013
Mesophilic ammonia-oxidizing Archaea (AOA) are abundant in a diverse range of marine environments, including the deep ocean, as revealed by the quantification of the archaeal amoA gene encoding the alpha-subunit of the ammonia monooxygenase.
Sintes, Eva, Yokokawa, Taichi, De Corte, Daniele, Bergauer, Kristin, Herndl, Gerhard J.   +4 more
core   +2 more sources

Data for: taxonomic database and cut-off value for processing high-throughput sequencing data of amoA gene for ammonia-oxidizing bacteria by MOTHUR

, 2021
The template and taxonomic files of amoA gene of ammonia-oxidizing bacteria for processing the high throughput sequencing data with the ...
Hong, Y (via Mendeley Data)
core   +1 more source

Chemical Speciation Defines Archaeal Ammonia‐Oxidizer Distribution in Yellowstone Hot Springs

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 7, July 2026.
Abstract The hot springs of Yellowstone National Park (YNP) provide a natural laboratory for investigating the influence of chemical speciation and energy availability on the distribution of microbes. Among 133 inorganic chemotrophic energy supplies, total dissolved ammonia oxidation was consistently one of the highest across 63 YNP hot spring samples.
Katelyn Weeks, Elizabeth Trembath‐Reichert, Jordyn Robare, R. Vince Debes II, Alta E. G. Howells, Everett Shock   +5 more
wiley   +1 more source