Results 11 to 20 of about 3,553 (157)

Carboxydotrophic Acetogenesis in Alkaline Conditions Results in Transient Formate Production by the Halo-Alkaliphilic Acetogen Haloacetibacter carboxydivorans Gen. Nov. sp. Nov. [PDF]

Environ Microbiol Rep
This work presents the physiological exploration of the halo‐alkaliphilic, carboxydotrophic acetogen bacterium MD4. In contrast to well‐characterised neutrophilic and slightly acidophilic acetogenic carboxydotrophs, this work shows an important role for formate production, instead of ethanol, as a redox exhaust mechanism in alkaline conditions ...
Diender M, Keijsers IM, Galani A, van Roosmalen T, Stams AJM, Sousa DZ.   +5 more
europepmc   +2 more sources

Evolutionary and functional relationships between plant and microbial C₁ metabolism in terrestrial ecosystems. [PDF]

New Phytol
Summary One‐carbon (C1) metabolism, centered on the universal methyl donor S‐adenosyl methionine (SAM), plays critical roles in biosynthesis, redox regulation, and stress responses across plants and microbes. A recently proposed photosynthetic C1 pathway links SAM methyl groups directly to RuBisCO‐mediated CO2 assimilation and integrates with nitrogen ...
Jardine KJ, Honeker LK, Zhang Z, Kwatcho Kengdo S, Yang Y, Roscioli J, Riley WJ.   +6 more
europepmc   +2 more sources

Limits to dihydrogen incorporation into electron sinks alternative to methanogenesis in ruminal fermentation

Frontiers in Microbiology, 2015
Research is being conducted with the objective of decreasing methane (CH4) production in the rumen, as methane emissions from ruminants are environmentally damaging and a loss of digestible energy to ruminants. Inhibiting ruminal methanogenesis generally
Emilio M. Ungerfeld
doaj   +1 more source

Construcción de una herramienta informática basada en matlab para el modelamiento del proceso anaerobio [PDF]

, 2020
Una de las problemáticas de la producción del ganado porcino es el desaprovechamiento de las excretas las cuales no son dispuestas de forma adecuada, generando impactos ambientales considerables. En la actualidad existen tratamientos digestión anaerobia
Diaz Rincón, Johan Sebastián,, Silva Daza, Moisés Elías,   +1 more
core   +1 more source

Bacterias anaerobias: procesos que realizan y contribuyen a la sostenibilidad de la vida en el planeta

NOVA, 2015
Objetivo. Se realiza una revisión sobre los aspectos degradativos de materia orgánica, obtención de energía y nutrientes de las bacterias anaerobias. La importancia de estos microorganismos es el papel que desempeñan en los procesos que contribuyen al ...
Lucia Constanza Corrales, Diana Marcela Antolinez Romero, Johanna Azucena Bohórquez Macías, Aura Marcela Corredor Vargas   +3 more
doaj   +1 more source

Homoacetogenesis and microbial community composition are shaped by pH and total sulfide concentration

Microbial Biotechnology, 2020
Summary Biological CO2 sequestration through acetogenesis with H2 as electron donor is a promising technology to reduce greenhouse gas emissions. Today, a major issue is the presence of impurities such as hydrogen sulfide (H2S) in CO2 containing gases ...
Eleftheria Ntagia, Ioanna Chatzigiannidou, Adam J. Williamson, Jan B. A. Arends, Korneel Rabaey   +4 more
doaj   +1 more source

Biophysical and biochemical studies support TP0094 as a phosphotransacetylase in an acetogenic energy-conservation pathway in Treponema pallidum.

PLoS ONE, 2023
The mechanisms of energy generation and carbon-source utilization in the syphilis spirochete Treponema pallidum have remained enigmatic despite complete genomic sequence information. Whereas the bacterium harbors enzymes for glycolysis, the apparatus for
Chad A Brautigam, Ranjit K Deka, Shih-Chia Tso, Wei Z Liu, Michael V Norgard   +4 more
doaj   +1 more source

Acetogenesis in the energy-starved deep biosphere – a paradox?

Frontiers in Microbiology, 2012
Under anoxic conditions in sediments, acetogens are often thought to be outcompeted by microorganisms performing energetically more favorable metabolic pathways, such as sulfate reduction or methanogenesis. Recent evidence from deep subseafloor sediments
Mark Alexander Lever
doaj   +1 more source

Genomic and enzymatic evidence of acetogenesis by anaerobic methanotrophic archaea

Nature Communications, 2020
Ocean cold seeps are poorly understood relative to related systems like hydrothermal vents. Here the authors use high pressure bioreactors and microbial communities from a cold seep mud volcano and find a previously missing step of methane conversion to ...
Shanshan Yang, Yongxin Lv, Xipeng Liu, Yinzhao Wang, Qilian Fan, Zhifeng Yang, Nico Boon, Fengping Wang, Xiang Xiao, Yu Zhang   +9 more
doaj   +1 more source

Microbial Considerations for the Permanent Geological Storage of CO₂. [PDF]

Environ Microbiol
The impacts of microbiology on the storage of CO2 are poorly understood but could be critical to its safe geological disposal. We review evidence for microbial risks and opportunities, and argue for a holistic biogeochemical approach to monitoring, managing and potentially harnessing microbial activity in geological storage operations.
Nixon SL, Walker L, Tyne RL.
europepmc   +2 more sources