Results 41 to 50 of about 5,212 (166)

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

Active Anaerobic Archaeal Methanotrophs in Recently Emerged Cold Seeps of Northern South China Sea

Frontiers in Microbiology, 2020
Cold seep ecosystems are developed from methane-rich fluids in organic rich continental slopes, which are the source of various dense microbial and faunal populations.
Tingting Zhang, Tingting Zhang, Tingting Zhang, Xi Xiao, Xi Xiao, Xi Xiao, Songze Chen, Songze Chen, Jing Zhao, Zongheng Chen, Junxi Feng, Junxi Feng, Qianyong Liang, Qianyong Liang, Qianyong Liang, Tommy J. Phelps, Tommy J. Phelps, Chuanlun Zhang, Chuanlun Zhang, Chuanlun Zhang   +19 more
doaj   +1 more source

Kinetics of sulfate‐ and iron‐dependent anaerobic methane oxidation in freshwater lake sediment

Limnology and Oceanography, Volume 71, Issue 4, April 2026.
Abstract Anaerobic oxidation of methane (AOM) is a potentially important sink for methane in freshwater sediments. Assessing the contribution of AOM to methane budgets requires an understanding of AOM process kinetics, yet such information remains scarce.
Alina Mostovaya, Michael Wind‐Hansen, Bo Thamdrup   +2 more
wiley   +1 more source

Novel Extended Tetraether Lipids Found in a High‐CO2 Geyser

Environmental Microbiology, Volume 28, Issue 3, March 2026.
Characterisation of the archaeal lipidome of the CO2‐rich subsurface aquifer of the Geyser Andernach reveals novel extended tetraether lipids analogous to extended archaeols, likely produced by Candidatus Altiarchaeum, and potentially functioning as a membrane adaptation strategy to nutrient‐deprived conditions.
Janina Groninga, Leonie Wittig, Feriel Bouderka, Till L. V. Bornemann, Julius S. Lipp, Florence Schubotz, Saskia Keden, Alexander J. Probst, Kai‐Uwe Hinrichs   +8 more
wiley   +1 more source

A long-term cultivation of an anaerobic methane-oxidizing microbial community from deep-sea methane-seep sediment using a continuous-flow bioreactor. [PDF]

PLoS ONE, 2014
Anaerobic oxidation of methane (AOM) in marine sediments is an important global methane sink, but the physiological characteristics of AOM-associated microorganisms remain poorly understood.
Masataka Aoki, Masayuki Ehara, Yumi Saito, Hideyoshi Yoshioka, Masayuki Miyazaki, Yayoi Saito, Ai Miyashita, Shuji Kawakami, Takashi Yamaguchi, Akiyoshi Ohashi, Takuro Nunoura, Ken Takai, Hiroyuki Imachi   +12 more
doaj   +1 more source

Hard Rock Buffet: Chemosynthetic Carbon Use and Environmental Trophic Structuring of Carbonate‐Associated Macrofauna at Southern California Methane Seeps

Marine Ecology, Volume 47, Issue 2, March/April 2026.
ABSTRACT Diverse invertebrate communities inhabiting carbonate rocks at methane seeps may rely on a mix of local chemosynthetic production and sinking photosynthetic organic matter, with relative importance shaped by environmental conditions. We investigate the contribution of chemosynthetic carbon to macrofaunal diets at six Southern California ...
Olívia S. Pereira, Rachel Survilas, María Emilia Bravo, Lisa A. Levin   +3 more
wiley   +1 more source

Clumped isotopes as fingerprints of microbial methane production pathways in marine sediments

Limnology and Oceanography Letters, Volume 11, Issue 1, January 2026.
Abstract Microbial methanogenesis in marine sediments produces significant amounts of methane from various substrates; however, identifying the active pathways in situ remains challenging. While the bulk and clumped isotopic signatures of methane from different pathways have been studied in pure cultures, these are difficult to compare with complex ...
Anna J. Wallenius, Malavika Sivan, Maria E. Popa, Caroline P. Slomp, Thomas Röckmann, Mike S.M. Jetten   +5 more
wiley   +1 more source

Dynamics of Iron‐Bound Organic Carbon Across Different Development Stages of Marine Cold Seeps

Global Biogeochemical Cycles, Volume 40, Issue 1, January 2026.
Abstract Marine cold seeps, where subsurface methane‐rich fluids discharge at seafloors, are “oases of life” that sustain highly active organic carbon (OC) and iron (Fe) cycling along the global continental margins. However, the interactions between Fe and OC and their impacts on the development and long‐term carbon preservation of cold seep ecosystems
Wenqi Ye, Yunru Chen, Chenxi Yang, Weikang Sui, Zian Tong, Xinyu Gu, Yanwei Wang, Zheng Xiong, Ningyuan Lu, Chuanhui Sun, Yang Wu, Xi Xiao, Lizhi Zhang, Qianyong Liang, Longhui Deng, Fengping Wang   +15 more
wiley   +1 more source

Nitrogen and carbon flows in a microbial mat involving anaerobic oxidation of methane in northwestern Black Sea: perspectives from nitrogen and carbon isotopic composition of coenzyme F430 and its biosynthetic pathway

Progress in Earth and Planetary Science
Coenzyme F430, a nickel-containing tetrapyrrole, serves as a cofactor for methyl-coenzyme M reductase (MCR), which catalyzes both the final step of methanogenesis and the initial step of anaerobic oxidation of methane (AOM).
Masanori Kaneko, Yoshinori Takano, Yuta Isaji, Nanako O. Ogawa, Yoshito Chikaraishi, Naoto F. Ishikawa, Hiroyuki Imachi, Yoshihiro Takaki, Miyuki Ogawara, Fumie Kabashima, Martin Krüger, Naohiko Ohkouchi   +11 more
doaj   +1 more source

Cryptic Carbon Cycle at Methane‐Seeps of the South China Sea: Evidence From Porewaters

Geophysical Research Letters, Volume 52, Issue 23, 16 December 2025.
Abstract Anaerobic oxidation of methane (AOM) governs methane consumption at seeps, yet δ13C‐CH4 values in the sulfate‐methane transitions are commonly lower than predicted from preferential 12C utilization by methanotrophic archaea, suggesting the influence of a different methane source. To address this isotope discrepancy, we used high‐resolution ion
Jinyu Zhu, Xiaoming Miao, Hongxiang Guan, Hangyu Nan, Yiwei Zhang, Yuqian Zhang, Nengyou Wu, Sanzhong Li   +7 more
wiley   +1 more source