Results 21 to 30 of about 7,791 (181)

Response of methanogenic community and their activity to temperature rise in alpine swamp meadow at different water level of the permafrost wetland on Qinghai-Tibet Plateau

Frontiers in Microbiology, 2023
Wetlands are an important source of atmospheric methane (CH4) and are sensitive to global climate change. Alpine swamp meadows, accounting for ~50% of the natural wetlands on the Qinghai-Tibet Plateau, were considered one of the most important ecosystems.
Hongpeng Cui, Hongpeng Cui, Hongpeng Cui, Yanfa Wang, Yanfa Wang, Yanfa Wang, Xin Su, Xin Su, Xin Su, Shiping Wei, Shiping Wei, Shouji Pang, Youhai Zhu, Shuai Zhang, Chenjie Ma, Chenjie Ma, Chenjie Ma, Weiguo Hou, Hongchen Jiang, Hongchen Jiang, Hongchen Jiang   +20 more
doaj   +1 more source

Nitrate decreases ruminal methane production with slight changes to ruminal methanogen composition of nitrate-adapted steers

BMC Microbiology, 2018
Background This study was conducted to examine effects of nitrate on ruminal methane production, methanogen abundance, and composition. Six rumen-fistulated Limousin×Jinnan steers were fed diets supplemented with either 0% (0NR), 1% (1NR), or 2% (2NR ...
Liping Zhao, Qingxiang Meng, Yan Li, Hao Wu, Yunlong Huo, Xinzhuang Zhang, Zhenming Zhou   +6 more
doaj   +1 more source

Fecal Methanogens and Vertebrate Evolution [PDF]

Evolution, 1996
It has been assumed that the feeding habits of vertebrates predispose the variety of intestinal differentiations and the composition of the microbial biota living in their intestinal tracts. Consequently, the presence of methanogenic bacteria in the various differentiations of the large intestine and the foregut of herbivorous vertebrates had been ...
Hackstein, J.H.P., Alen, T.A. van
openaire   +3 more sources

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

Structures of topoisomerase V in complex with DNA reveal unusual DNA-binding mode and novel relaxation mechanism

eLife, 2022
Topoisomerase V is a unique topoisomerase that combines DNA repair and topoisomerase activities. The enzyme has an unusual arrangement, with a small topoisomerase domain followed by 12 tandem (HhH)2 domains, which include 3 AP lyase repair domains.
Amy Osterman, Alfonso Mondragón
doaj   +1 more source

Isoprene Production from Municipal Wastewater Biosolids by Engineered Archaeon Methanosarcina acetivorans

Applied Sciences, 2021
Wastewater biosolids are a promising feedstock for production of value-added renewable chemicals. Methane-producing archaea (methanogens) are already used to produce renewable biogas via the anaerobic treatment of wastewater.
Sean Carr, Jared Aldridge, Nicole R. Buan   +2 more
doaj   +1 more source

Effect of ammonium and acetate on methanogenic pathway and methanogenic community composition [PDF]

FEMS Microbiology Ecology, 2012
Methanogenesis from acetate (aceticlastic methanogenesis or syntrophic acetate oxidation (SAO) coupled with hydrogenotrophic methanogenesis) is the most important step for the biogas process. The major environmental factors influencing methanogenesis are volatile fatty acids, ammonia, pH, and temperature. In our study, the effect of acetate and ammonia
Ioannis A, Fotidis, Dimitar, Karakashev, Thomas A, Kotsopoulos, Gerassimos G, Martzopoulos, Irini, Angelidaki   +4 more
openaire   +2 more sources

Evidence for a plasmid in a methanogenic bacterium [PDF]

Journal of Bacteriology, 1983
Among 15 strains of methanogens, one plasmid, pMP1, was identified in the new coccoid isolate PL-12/M. It could not be detected in the cleared lysate, but it was detected in the viscous pellet. The plasmid had a molecular weight of ca. 4.6 x 10(6). A restriction enzyme cleavage map of the cloned plasmid was derived.
Thomm, Michael, Altenbuchner, J., Stetter, Karl Otto   +2 more
openaire   +3 more sources

Novel Methanobacterium Strain Induces Severe Corrosion by Retrieving Electrons from Fe⁰ under a Freshwater Environment

Microorganisms, 2022
Methanogens capable of accepting electrons from Fe0 cause severe corrosion in anoxic conditions. In previous studies, all iron-corrosive methanogenic isolates were obtained from marine environments.
Shin-ichi Hirano, Sota Ihara, Satoshi Wakai, Yuma Dotsuta, Kyohei Otani, Toru Kitagaki, Fumiyoshi Ueno, Akihiro Okamoto   +7 more
doaj   +1 more source

In vitro interactions between Blautia hydrogenotrophica, Desulfovibrio piger and Methanobrevibacter smithii under hydrogenotrophic conditions

Gut Microbes, 2023
Methanogens, reductive acetogens and sulfate-reducing bacteria play an important role in disposing of hydrogen in gut ecosystems. However, how they interact with each other remains largely unknown. This in vitro study cocultured Blautia hydrogenotrophica
Taojun Wang, Nils Leibrock, Caroline M. Plugge, Hauke Smidt, Erwin G. Zoetendal   +4 more
doaj   +1 more source