Results 21 to 30 of about 1,407 (173)

Redox transformations of iron at extremely low pH: fundamental and applied aspects

open access: yesFrontiers in Microbiology, 2012
Many different species of acidophilic prokaryotes, widely distributed within the domains Bacteria and Archaea, can catalyze the dissimilatory oxidation of ferrous iron or reduction of ferric iron, or can do both.
D. Barrie eJohnson   +2 more
doaj   +1 more source

The Flexible Genome of Acidophilic Prokaryotes

open access: yesCurrent Issues in Molecular Biology, 2021
Over the last couple of decades there has been considerable progress in the identification and understanding of the mobile genetic elements that are exchanged between microbes in extremely acidic environments, and of the genes piggybacking on them. Numerous plasmid families, unique viruses of bizarre morphologies and lyfe cycles, as well as plasmid ...
Simon, Beard   +3 more
openaire   +2 more sources

Energy conservation in acidophilic bacteria [PDF]

open access: yesMicrobiological Reviews, 1983
Lipides des procaryotes acidophiles. Force motrice protonique et mecanismes chimioosmotiques. Maintien du ΔpH.
J G, Cobley, J C, Cox
openaire   +2 more sources

Novel Microorganisms Contribute to Biosulfidogenesis in the Deep Layer of an Acidic Pit Lake

open access: yesFrontiers in Bioengineering and Biotechnology, 2022
Cueva de la Mora is a permanently stratified acidic pit lake with extremely high concentrations of heavy metals at depth. In order to evaluate the potential for in situ sulfide production, we characterized the microbial community in the deep layer using ...
Diana Ayala-Muñoz   +5 more
doaj   +1 more source

Eukaryotic diversity at pH extremes

open access: yesFrontiers in Microbiology, 2013
Extremely acidic (pH<3) and extremely alkaline (pH>9) environments support a diversity of single-cell and to a lesser extent, multicellular eukaryotic life.
Linda A. Amaral-Zettler   +1 more
doaj   +1 more source

Biochemical Characterization of Recombinant Isocitrate Dehydrogenase and Its Putative Role in the Physiology of an Acidophilic Micrarchaeon

open access: yesMicroorganisms, 2021
Despite several discoveries in recent years, the physiology of acidophilic Micrarchaeota, such as “Candidatus Micrarchaeum harzensis A_DKE”, remains largely enigmatic, as they highly express numerous genes encoding hypothetical proteins. Due to a lacking
Dennis Winkler   +2 more
doaj   +1 more source

Acidophil bodies in nonalcoholic steatohepatitis [PDF]

open access: yesHuman Pathology, 2016
The significance of the quantity of acidophil bodies (AB) in nonalcoholic steatohepatitis (NASH) is not certain. We quantified AB in liver biopsies and examined the association with the diagnosis of NASH and other histologic features. We reviewed 157 liver biopsies from the NASH Clinical Research Network Database collected in 2006.
Matthew M, Yeh   +5 more
openaire   +2 more sources

Osmotic Imbalance, Cytoplasm Acidification and Oxidative Stress Induction Support the High Toxicity of Chloride in Acidophilic Bacteria

open access: yesFrontiers in Microbiology, 2019
In acidophilic microorganisms, anions like chloride have higher toxicity than their neutrophilic counterparts. In addition to the osmotic imbalance, chloride can also induce acidification of the cytoplasm.
Javier Rivera-Araya   +6 more
doaj   +1 more source

Defining pH-associated ecological clusters and their responses to agricultural intensification

open access: yesGeoderma
Soil pH is a major factor influencing the participation of soil microorganisms in biogeochemical processes. However, different microbial taxa exhibit varied responses to pH levels, and their ecological functions remain unclear.
Yi Ren   +7 more
doaj   +1 more source

Domestication of Local Microbial Consortia for Efficient Recovery of Gold Through Top-Down Selection in Airlift Bioreactors

open access: yesFrontiers in Microbiology, 2019
Extreme acidophiles play central roles in the geochemical cycling of diverse elements in low pH environments. This has been harnessed in biotechnologies such as biomining, where microorganisms facilitate the recovery of economically important metals such
Ricardo Ulloa   +9 more
doaj   +1 more source

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