Results 41 to 50 of about 10,038 (209)

Different carboxyl-rich alicyclic molecules proxy compounds select distinct bacterioplankton for oxidation of dissolved organic matter in the mesopelagic Sargasso Sea [PDF]

open access: yes, 2020
© The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Liu, S., Parsons, R., Opalk, K., Baetge, N., Giovannoni, S., Bolanos, L. M., Kujawinski, E.
Baetge, Nicholas   +10 more
core   +1 more source

Tropical aquatic Archaea show environment-specific community composition.

open access: yesPLoS ONE, 2013
The Archaea domain is ubiquitously distributed and extremely diverse, however, environmental factors that shape archaeal community structure are not well known.
Cynthia B Silveira   +8 more
doaj   +1 more source

Short-term variability in the sedimentary BIT index of Lake Challa, East Africa over the past 2200 years : validating the precipitation proxy [PDF]

open access: yes, 2015
. The branched vs. isoprenoid index of tetraethers (BIT index) in Lake Challa sediments has been applied as a monsoon precipitation proxy on the assumption that the primary source of branched tetraether lipids (brGDGTs) was soil washed in from the lake's
Buckles, LK   +4 more
core   +1 more source

Novel Transcriptional Regulons for Autotrophic Cycle Genes in Crenarchaeota [PDF]

open access: yesJournal of Bacteriology, 2015
ABSTRACT Autotrophic microorganisms are able to utilize carbon dioxide as their only carbon source, or, alternatively, many of them can grow heterotrophically on organics. Different variants of autotrophic pathways have been identified in various lineages of the phylum Crenarchaeota .
Semen A, Leyn   +3 more
openaire   +2 more sources

Genomic Inference of the Metabolism and Evolution of the Archaeal Phylum Aigarchaeota [PDF]

open access: yes, 2018
Microbes of the phylum Aigarchaeota are widely distributed in geothermal environments, but their physiological and ecological roles are poorly understood.
Castelle, Cindy J.   +14 more
core   +3 more sources

Genomics-informed isolation and characterization of a symbiotic Nanoarchaeota system from a terrestrial geothermal environment

open access: yesNature Communications, 2016
Many microbial lineages have not yet been cultured, which hampers our understanding of their physiology. Here, Wurch et al. use single-cell genomics to infer cultivation conditions for the isolation of a tiny ectosymbiotic nanoarchaeon and its ...
Louie Wurch   +7 more
doaj   +1 more source

Microbial communities and arsenic biogeochemistry at the outflow of an alkaline sulfide-rich hot spring. [PDF]

open access: yes, 2016
Alkaline sulfide-rich hot springs provide a unique environment for microbial community and arsenic (As) biogeochemistry. In this study, a representative alkaline sulfide-rich hot spring, Zimeiquan in the Tengchong geothermal area, was chosen to study ...
Dai, Xinyue   +9 more
core   +1 more source

Study of the distribution of autotrophic CO2 fixation cycles in Crenarchaeota [PDF]

open access: yesMicrobiology, 2010
Two new autotrophic carbon fixation cycles have been recently described in Crenarchaeota. The 3-hydroxypropionate/4-hydroxybutyrate cycle using acetyl-coenzyme A (CoA)/propionyl-CoA carboxylase as the carboxylating enzyme has been identified for (micro)aerobic members of the Sulfolobales. The dicarboxylate/4-hydroxybutyrate cycle using oxygen-sensitive
Ivan A, Berg   +4 more
openaire   +2 more sources

Population Dynamics and Community Composition of Ammonia Oxidizers in Salt Marshes after the Deepwater Horizon Oil Spill [PDF]

open access: yes, 2016
The recent oil spill in the Gulf of Mexico had significant effects on microbial communities in the Gulf, but impacts on nitrifying communities in adjacent salt marshes have not been investigated.
Bernhard, Anne E   +4 more
core   +2 more sources

Distribution of Membrane Lipids of Planktonic Crenarchaeota in the Arabian Sea [PDF]

open access: yesApplied and Environmental Microbiology, 2002
ABSTRACT Intact core tetraether membrane lipids of marine planktonic Crenarchaeota were quantified in water column-suspended particulate matter obtained from four depth intervals (∼70, 500, 1,000 and 1,500 m) at seven stations in the northwestern Arabian Sea to investigate the distribution of the organisms
Sinninghe Damsté, J.S.   +5 more
openaire   +3 more sources

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