Results 71 to 80 of about 2,883 (134)

Mitigating methane emissions and promoting acetogenesis in ruminant livestock

Frontiers in Animal Science
Through enteric fermentation, ruminants convert fibrous biomass into high-quality proteins like meat and milk. In this process however, methanogenic archaea in the ruminant gastrointestinal tract produce methane, a potent greenhouse gas, from the by ...
Rehema Iddi Mrutu, Abdussamad Muhammad Abdussamad, Kabir Mustapha Umar, Adnan Abdulhamid, Natalie G. Farny, Natalie G. Farny   +5 more
doaj   +1 more source

Structure and functional genes associated with carbon, nitrogen, phosphorus, and sulfur cycling processes in periphyton: A comparison between natural and artificial rivers

River, Volume 5, Issue 2, Page 177-191, May 2026.
Network analysis of functional genes among prokaryotes, and eukaryotes in natural and artificial rivers. Abstract Periphyton in aquatic ecosystems plays vital roles in the elemental cycle process and is vulnerable to anthropogenic interference. However, few studies have explored the elemental cycles of carbon (C), nitrogen (N), phosphorus (P), and ...
Yulu Tian, Jiezhang Mo, Jiaxin Liu, Chenghao Li, Jiahua Guo   +4 more
wiley   +1 more source

Acetogenic Methane‐Carbon Monoxide Comproportionation: An Exergonic but Unobserved Microbial Metabolism

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 5, May 2026.
Abstract Microbial metabolism relies on redox reactions that exploit chemical disequilibria. While aerobic carbon oxidation, carbon fixation, and fermentation are well studied, the broader space of anaerobic carbon redox reactions remains underexplored.
Heidi S. Aronson, William D. Leavitt, Douglas E. LaRowe   +2 more
wiley   +1 more source

A TetR-Family Protein (CAETHG_0459) Activates Transcription From a New Promoter Motif Associated With Essential Genes for Autotrophic Growth in Acetogens

Frontiers in Microbiology, 2019
Acetogens can fix carbon (CO or CO2) into acetyl-CoA via the Wood–Ljungdahl pathway (WLP) that also makes them attractive cell factories for the production of fuels and chemicals from waste feedstocks.
Renato de Souza Pinto Lemgruber, Kaspar Valgepea, Kaspar Valgepea, Ricardo Axayacatl Gonzalez Garcia, Christopher de Bakker, Robin William Palfreyman, Robin William Palfreyman, Ryan Tappel, Michael Köpke, Séan Dennis Simpson, Lars Keld Nielsen, Esteban Marcellin, Esteban Marcellin   +12 more
doaj   +1 more source

Advancement in Anaerobic Digestion for Scaling‐Up Biogas Production Through Food Waste Valorization

ChemBioEng Reviews, Volume 13, Issue 2, April 2026.
The review article begins with an introduction that covers the overview, food waste (FW) classification, and the steps involved in producing biogas through anaerobic digestion (AD). Following that, it describes the process for producing biogas, including single‐, two‐, and multistage systems, mesophilic and thermophilic digestion, and wet and dry ...
Poulami Chatterjee, Nabanita Saha, Petr Sáha   +2 more
wiley   +1 more source

Assessing environmental gradients in relation to dark CO2 fixation in estuarine wetland microbiomes

Applied and Environmental Microbiology
The rising atmospheric concentration of CO2 is a major concern to society due to its global warming potential. In soils, CO2-fixing microorganisms are preventing some of the CO2 from entering the atmosphere.
Luise Grüterich, Jason Nicholas Woodhouse, Peter Mueller, Amos Tiemann, Hans-Joachim Ruscheweyh, Shinichi Sunagawa, Hans-Peter Grossart, Wolfgang R. Streit   +7 more
doaj   +1 more source

Progresses and challenges of engineering thermophilic acetogenic cell factories

Frontiers in Microbiology
Thermophilic acetogens are gaining recognition as potent microbial cell factories, leveraging their unique metabolic capabilities to drive the development of sustainable biotechnological processes. These microorganisms, thriving at elevated temperatures,
Barbara Bourgade, M. Ahsanul Islam
doaj   +1 more source

Clostridium autoethanogenum alters cofactor synthesis, redox metabolism, and lysine-acetylation in response to elevated H2:CO feedstock ratios for enhancing carbon capture efficiency

Biotechnology for Biofuels and Bioproducts
Background Clostridium autoethanogenum is an acetogenic bacterium that autotrophically converts carbon monoxide (CO) and carbon dioxide (CO2) gases into bioproducts and fuels via the Wood–Ljungdahl pathway (WLP).
Megan E. Davin, R. Adam Thompson, Richard J. Giannone, Lucas W. Mendelson, Dana L. Carper, Madhavi Z. Martin, Michael E. Martin, Nancy L. Engle, Timothy J. Tschaplinski, Steven D. Brown, Robert L. Hettich   +10 more
doaj   +1 more source

Insights into CO₂ Fixation Pathway of Clostridium autoethanogenum by Targeted Mutagenesis

mBio, 2016
The future sustainable production of chemicals and fuels from nonpetrochemical resources and reduction of greenhouse gas emissions are two of the greatest societal challenges.
Fungmin Liew, Anne M. Henstra, Klaus Winzer, Michael Köpke, Sean D. Simpson, Nigel P. Minton   +5 more
doaj   +1 more source

Direct carbon monoxide fixation via the bacterial and archaeal Wood–Ljungdahl pathways

Abstract The Wood–Ljungdahl (WL) pathway, which is widely distributed in both archaea and bacteria, is an ancient carbon fixation pathway from CO 2 . CO 2 fixation proceeds via two branches of pathway: progressive reduction to the methyl group in ...
Yuto Fukuyama, Sanae Sakai, Yoko Chiba, Shigeru Shimamura, Satoshi Hiraoka, Tomoyuki Wakashima, Takuro Nunoura, Ken Takai   +7 more
openaire   +1 more source