Results 21 to 30 of about 12,429 (188)

Direct interspecies electron transfer enables anaerobic oxidation of sulfide to elemental sulfur coupled with CO2-reducing methanogenesis

iScience, 2023
Summary: Electric syntrophy between fatty acid oxidizers and methanogens through direct interspecies electron transfer (DIET) is essential for balancing acidogenesis and methanogenesis in anaerobic digestion.
Heejung Jung, Hyeonjung Yu, Changsoo Lee
doaj   +1 more source

Copper(II/III) Redox Couple Enables C─H Methylation via a Radical Mechanism Analogous to SAM Enzymes

Angewandte Chemie, EarlyView.
Biological C–H methylation proceeds through radical pathways mediated by one‐electron redox cofactors, yet no synthetic model has reproduced this reactivity. Here, we report the first isolable Cu(II/III)–methyl complexes that mediate C–H methylation through hydrogen atom transfer and methyl radical rebound.
Emily N. Doss, Curtis E. Moore, Shiyu Zhang   +2 more
wiley   +2 more sources

Inhibition of Rumen Methanogenesis and Ruminant Productivity: A Meta-Analysis

Frontiers in Veterinary Science, 2018
Methane (CH4) formed in the rumen and released to the atmosphere constitutes an energy inefficiency to ruminant production. Redirecting energy in CH4 to fermentation products with a nutritional value to the host animal could increase ruminant ...
Emilio M. Ungerfeld
doaj   +1 more source

Effects of Copper Sulfate and Encapsulated Copper Addition on In Vitro Rumen Fermentation and Methane Production

Agriculture, 2022
Copper is a microelement crucial for the proper functioning of animals’ metabolic processes. The function of copper in rumen fermentation processes and methanogenesis is not well analyzed.
Martyna Wilk, Ewa Pecka-Kiełb, Jerzy Pastuszak, Muhammad Umair Asghar, Laura Mól   +4 more
doaj   +1 more source

Organic matter supply and bacterial community composition predict methanogenesis rates in temperate lake sediments

Limnology and Oceanography Letters, 2019
The objective of our study was to identify environmental conditions that structure lake sediment microbial communities and determine whether community composition explained inter‐lake variation in potential methanogenesis rates.
Brittni L. Bertolet, William E. West, David W. Armitage, Stuart E. Jones   +3 more
doaj   +1 more source

Inhibiting Methanogenesis Stimulated de novo Synthesis of Microbial Amino Acids in Mixed Rumen Batch Cultures Growing on Starch but not on Cellulose

Microorganisms, 2020
Ameliorating methane (CH4) emissions from ruminants would have environmental benefits, but it is necessary to redirect metabolic hydrogen ([H]) toward useful sinks to also benefit animal productivity.
Emilio M. Ungerfeld, M. Fernanda Aedo, Camila Muñoz, Natalie L. Urrutia, Emilio D. Martínez, Marcelo Saldivia   +5 more
doaj   +1 more source

A multienzyme complex channels substrates and electrons through acetyl-CoA and methane biosynthesis pathways in Methanosarcina.

PLoS ONE, 2014
Multienzyme complexes catalyze important metabolic reactions in many organisms, but little is known about the complexes involved in biological methane production (methanogenesis). A crosslinking-mass spectrometry (XL-MS) strategy was employed to identify
Dillon J Lieber, Jennifer Catlett, Nandu Madayiputhiya, Renu Nandakumar, Madeline M Lopez, William W Metcalf, Nicole R Buan   +6 more
doaj   +1 more source

Diversity of prokaryotic microorganisms in alkaline saline soil of the Qarhan Salt Lake area in the Qinghai–Tibet Plateau

Scientific Reports, 2022
The composition of microbial communities varies considerably across ecological environments, particularly in extreme environments, where unique microorganisms are typically used as the indicators of environmental conditions.
Yaqiong Wang, Guoyuan Bao
doaj   +1 more source

Vertical profiles of sediment methanogenic potential and communities in two plateau freshwater lakes [PDF]

Biogeosciences, 2017
Microbial methanogenesis in sediment plays a crucial role in CH4 emission from freshwater lake ecosystems. However, knowledge of the layer-depth-related changes of methanogen community structure and activities in freshwater lake sediment is still limited.
Y. Yang, N. Li, W. Wang, B. Li, S. Xie, Y. Liu   +5 more
doaj   +1 more source

Mer overexpression in Methanosarcina acetivorans affects growth and methanogenesis during substrate adaptation

Applied and Environmental Microbiology
Evidence suggests that multienzyme complexes are involved in biological methane production (methanogenesis), although the composition of the Wolfe Cycle methanogenesis complexes may vary between diverse methanoarchaeal taxa ...
Darla Brennan, Dillon Lieber, Mary Walter, Morgan Price, Nicole R. Buan   +4 more
doaj   +1 more source