Results 31 to 40 of about 264 (119)

Sulfate biosensor for environmental applications

open access: yesLimnology and Oceanography: Methods, Volume 20, Issue 10, Page 674-681, October 2022., 2022
Abstract Sulfate is present in all freshwater and marine environments and is reduced to toxic and corrosive hydrogen sulfide by anaerobic bacteria. By measuring depth profiles of sulfate in sediments, it is possible to obtain estimates of sulfate reduction rates (SRRs).
Ugo Marzocchi, Niels Peter Revsbech
wiley   +1 more source

Tracing and regulating redox homeostasis of model benthic ecosystems for sustainable aquaculture in coastal environments

open access: yesFrontiers in Microbiology, 2022
Aquaculture in coastal environments has an increasingly important role in the world’s food supply; however, the accumulation of organic compounds on seafloors due to overfeeding adversely affects benthic ecosystems. To assess the ecological resilience of
Nobuaki Shono   +10 more
doaj   +1 more source

Redox Mediators in Microbial Electrochemical Systems

open access: yesChemElectroChem, Volume 9, Issue 13, July 14, 2022., 2022
Electron transfer mechanisms: in microbial electrochemical systems is crucial for understanding and optimizing these processes. This review focused on mediated electron transfer and gave the reader a handbook for mediator selection by stating the relevant redox potentials and microbial interaction sites. Furthermore, the review focused on what mediator
André Gemünde   +4 more
wiley   +1 more source

Enhanced benthic nitrous oxide and ammonium production after natural oxygenation of long‐term anoxic sediments

open access: yesLimnology and Oceanography, Volume 67, Issue 2, Page 419-433, February 2022., 2022
Abstract Coastal and shelf sediments are central in the global nitrogen (N) cycle as important sites for the removal of fixed N. However, this ecosystem service can be hampered by ongoing deoxygenation in many coastal areas. Natural reoxygenation could reinstate anoxic sediments as sites where fixed N is removed efficiently. To investigate this further,
Astrid Hylén   +5 more
wiley   +1 more source

Halobacterium salinarum NRC‐1 Sustains Voltage Production in a Dual‐Chambered Closed Microbial Fuel Cell

open access: yesThe Scientific World Journal, Volume 2022, Issue 1, 2022., 2022
Sustained bioenergy production from organisms that thrive in high salinity, low oxygen, and low nutrition levels is useful in monitoring hypersaline polluted environments. Microbial fuel cell (MFC) studies utilizing single species halophiles under salt concentrations higher than 1 M and as a closed microbial system are limited.
Rodrigo Oliveira Goncalves   +7 more
wiley   +1 more source

Cable bacteria at oxygen‐releasing roots of aquatic plants: a widespread and diverse plant–microbe association

open access: yesNew Phytologist, Volume 232, Issue 5, Page 2138-2151, December 2021., 2021
Summary Cable bacteria are sulfide‐oxidising, filamentous bacteria that reduce toxic sulfide levels, suppress methane emissions and drive nutrient and carbon cycling in sediments. Recently, cable bacteria have been found associated with roots of aquatic plants and rice (Oryza sativa).
Vincent V. Scholz   +9 more
wiley   +1 more source

Bottom-Up Fabrication of Protein Nanowires via Controlled Self-Assembly of Recombinant Geobacter Pilins

open access: yesmBio, 2019
Metal-reducing bacteria in the genus Geobacter use a complex protein apparatus to guide the self-assembly of a divergent type IVa pilin peptide and synthesize conductive pilus appendages that show promise for the sustainable manufacturing of protein ...
K. M. Cosert   +4 more
doaj   +1 more source

Generation of High Current Densities in Geobacter sulfurreducens Lacking the Putative Gene for the PilB Pilus Assembly Motor

open access: yesMicrobiology Spectrum, 2021
Geobacter sulfurreducens is commonly employed as a model for the study of extracellular electron transport mechanisms in the Geobacter species. Deletion of pilB, which is known to encode the pilus assembly motor protein for type IV pili in other bacteria,
Toshiyuki Ueki   +6 more
doaj   +1 more source

Innovative biological approaches for monitoring and improving water quality

open access: yesFrontiers in Microbiology, 2015
Water quality is largely influenced by the abundance and diversity of indigenous microbes present within an aquatic environment. Physical, chemical and biological contaminants from anthropogenic activities can accumulate in aquatic systems causing ...
Sanja eAracic   +5 more
doaj   +1 more source

The Archaellum of Methanospirillum hungatei Is Electrically Conductive

open access: yesmBio, 2019
Microbially produced electrically conductive protein filaments are of interest because they can function as conduits for long-range biological electron transfer. They also show promise as sustainably produced electronic materials.
David J. F. Walker   +5 more
doaj   +1 more source

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