N
Nicolai Panikov
Researcher at Northeastern University
Publications - 86
Citations - 8238
Nicolai Panikov is an academic researcher from Northeastern University. The author has contributed to research in topics: Arctic & Tundra. The author has an hindex of 29, co-authored 86 publications receiving 7127 citations. Previous affiliations of Nicolai Panikov include Dartmouth College & Stevens Institute of Technology.
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Journal ArticleDOI
The Microbial Metabolites, Short-Chain Fatty Acids, Regulate Colonic Treg Cell Homeostasis
Patrick M. Smith,Michael R. Howitt,Nicolai Panikov,Monia Michaud,Carey Ann Gallini,Mohammad Bohlooly-Y,Jonathan N. Glickman,Wendy S. Garrett +7 more
TL;DR: This study determined that short-chain fatty acids, gut microbiota–derived bacterial fermentation products, regulate the size and function of the colonic Treg pool and protect against colitis in a Ffar2-dependent manner in mice, revealing that a class of abundant microbial metabolites underlies adaptive immune microbiota coadaptation and promotes colonic homeostasis and health.
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Methylocella palustris gen. nov., sp. nov., a new methane-oxidizing acidophilic bacterium from peat bogs, representing a novel subtype of serine-pathway methanotrophs.
Svetlana N. Dedysh,Werner Liesack,Valentina N. Khmelenina,Natalia E. Suzina,Yuri A. Trotsenko,Jeremy D. Semrau,Amy M. Bares,Nicolai Panikov,James M. Tiedje +8 more
TL;DR: The three strains share identical 16S rRNA gene sequences and represent a novel lineage of methane-oxidizing bacteria within the alpha-subclass of the class Proteobacteria and are only moderately related to type II methanotrophs of the Methylocystis-Methylosinus group.
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Factors controlling large scale variations in methane emissions from wetlands
Torben R. Christensen,Anna Ekberg,Lena Ström,Mihail Mastepanov,Nicolai Panikov,Mats Öquist,Bo H. Svensson,Hannu Nykänen,Pertti J. Martikainen,Hlynur Óskarsson +9 more
TL;DR: In this paper, the authors present a dataset on CH4 flux rates totaling 12 measurement years at sites from Greenland, Iceland, Scandinavia and Siberia, and find that temperature and microbial substrate availability (expressed as the organic acid concentration in peat water) combined explain almost 100% of the variations in mean annual CH4 emissions.
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Biodiversity, distributions and adaptations of Arctic species in the context of environmental change.
Terry V. Callaghan,Lars Olof Björn,Yuri Chernov,Terry Chapin,Torben R. Christensen,Brian Huntley,Rolf A. Ims,Margareta Johansson,Dyanna Jolly,Sven Jonasson,Nadya Matveyeva,Nicolai Panikov,Walter C. Oechel,Gus Shaver,Josef Elster,Heikki Henttonen,Kari Laine,Kari Taulavuori,Erja Taulavuori,Christoph Zöckler +19 more
TL;DR: Terrestrial Arctic animals are likely to be most vulnerable to warmer and drier summers, climatic changes that interfere with migration routes and staging areas, altered snow conditions and freeze-thaw cycles in winter, climate-induced disruption of the seasonal timing of reproduction and development, and influx of new competitors, predators, parasites and diseases.
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Microbial activity in soils frozen to below-39 degrees C
TL;DR: In this paper, the authors present kinetic data on CO2 and (CO2)-C-14 release from intact and C-14-glucose amended tundra soils (Barrow, Alaska) incubated for up to a year at 0 to -39 degrees C.