Gradients of oxygen and sulfide measured towards individual cells of the large nitrate-storing sulfur bacterium Thiomargarita namibiensis showed that in addition to nitrate oxygen is used for oxidation of sulfide. Stable gradients around the cells were found only if acetate was added to the medium at low concentrations.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC129903PMC
http://dx.doi.org/10.1128/AEM.68.11.5746-5749.2002DOI Listing

Publication Analysis

Top Keywords

oxygen sulfide
8
sulfide measured
8
measured individual
8
thiomargarita namibiensis
8
uptake rates
4
rates oxygen
4
individual thiomargarita
4
namibiensis cells
4
cells microelectrodes
4
microelectrodes gradients
4

Similar Publications

Alkali metal doping is a new and promising approach to enhance the photo/electrocatalytic activity of NiS-based catalyst systems. This work investigates the impact of sodium on the structural, electronic, and catalytic properties of NiS. Comprehensive characterization techniques demonstrate that Na-doping causes significant changes in the NiS lattice and surface chemistry translating into a larger bandgap than NiS.

View Article and Find Full Text PDF

Control of HS synthesis by the monomer-oligomer transition of OsCBSX3 for modulating rice growth-immunity balance.

Mol Plant

January 2025

State Key Laboratory of Wheat Improvement, Shandong Provincial Key Laboratory of Agricultural Microbiology, College of Plant Protection, Shandong Agricultural University, Tai'an 271018, China. Electronic address:

Hydrogen sulfide (H2S) is recognized as an important gaseous signaling molecule, similar to nitric oxide and carbon monoxide. However, the synthesis mechanism of H2S and its role in enhancing rice resistance to Xanthomonas oryzae pv. oryzicola (Xoc) and Xanthomonas oryzae pv.

View Article and Find Full Text PDF

CFD simulation of turbulent mass transfer of HS and O in a stirring tank.

Water Sci Technol

January 2025

Chair of Water Resources Management and Modeling of Hydrosystems, Technische Universität Berlin, Gustav-Meyer-Allee 25, Berlin 13355, Germany.

This study explores the computational fluid dynamics (CFD) simulation of oxygen (O) and hydrogen sulfide (HS) mass transfer in a highly turbulent stirring tank. Using the open-source software OpenFOAM, we extended three-dimensional two-phase flow solvers with a rotating mesh feature to model the mass transfer processes between the water and air phases. The accuracy of these simulations was validated against experimental data, demonstrating a strong agreement in the mass transfer rates of HS and O.

View Article and Find Full Text PDF

Coastal deoxygenation impacts phytoplankton communities crucial for marine productivity. The inter- and intra-annual variability in phytoplankton communities at a shallow (27 m) station over the Western Indian Shelf (CaTS site, off Goa) during deoxygenation events of the late southwest monsoon (LSWM September-October) were studied from 2020 to 2023. The water column (0-27 m depth) experienced seasonal hypoxia/anoxia at subsurface depths (0-1.

View Article and Find Full Text PDF

Interaction and regulation of the mitochondrial proteome - in health and disease.

Expert Rev Proteomics

January 2025

Research Unit for Molecular Medicine, Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus, Denmark.

Introduction: Mitochondria contain multiple pathways including energy metabolism and several signaling and synthetic pathways. Mitochondrial proteomics is highly valuable for studying diseases including inherited metabolic disorders, complex and common disorders like neurodegeneration, diabetes, and cancer, since they all to some degree have mitochondrial underpinnings.

Areas Covered: The main mitochondrial functions and pathways are outlined, and systematic protein lists are presented.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!