Results 31 to 40 of about 12,024 (210)

Nitrogen fixation and nifH diversity in human gut microbiota [PDF]

Scientific Reports, 2016
AbstractIt has been hypothesized that nitrogen fixation occurs in the human gut. However, whether the gut microbiota truly has this potential remains unclear. We investigated the nitrogen-fixing activity and diversity of the nitrogenase reductase (NifH) genes in the faecal microbiota of humans, focusing on Papua New Guinean and Japanese individuals ...
Katsura Igai, Manabu Itakura, Suguru Nishijima, Hiroto Tsurumaru, Wataru Suda, Takumi Tsutaya, Eriko Tomitsuka, Kiyoshi Tadokoro, Jun Baba, Shingo Odani, Kazumi Natsuhara, Ayako Morita, Minoru Yoneda, Andrew R. Greenhill1, Paul F. Horwood, Jun-Ichi Inoue, Moriya Ohkuma, Yuichi Hongoh, Taro Yamamoto, Peter Siba, Masahira Hattori, Kiwamu Minamisawa, Masahiro Umezaki   +22 more
openaire   +3 more sources

Elevated Atmospheric CO2 and Nitrogen Fertilization Affect the Abundance and Community Structure of Rice Root-Associated Nitrogen-Fixing Bacteria

Frontiers in Microbiology, 2021
Elevated atmospheric CO2 (eCO2) results in plant growth and N limitation, yet how root-associated nitrogen-fixing bacterial communities respond to increasing atmospheric CO2 and nitrogen fertilization (eN) during the growth stages of rice is unclear ...
Jumei Liu, Jumei Liu, Jumei Liu, Jingjing Han, Chunwu Zhu, Weiwei Cao, Weiwei Cao, Ying Luo, Meng Zhang, Shaohua Zhang, Zhongjun Jia, Ruihong Yu, Ruihong Yu, Ji Zhao, Ji Zhao, Zhihua Bao, Zhihua Bao   +16 more
doaj   +1 more source

Inhibition of Iron-Molybdenum Cofactor Biosynthesis by L127Δ NifH and Evidence for a Complex Formation between L127Δ NifH and NifNE [PDF]

Journal of Biological Chemistry, 1999
Besides serving as the obligate electron donor to dinitrogenase during nitrogenase turnover, dinitrogenase reductase (NifH) is required for the biosynthesis of the iron-molybdenum cofactor (FeMo-co) and for the maturation of alpha(2)beta(2) apo-dinitrogenase (apo-dinitrogenase maturation).
P, Rangaraj, M J, Ryle, W N, Lanzilotta, P J, Goodwin, D R, Dean, V K, Shah, P W, Ludden   +6 more
openaire   +2 more sources

Nitrogenase gene amplicons from global marine surface waters are dominated by genes of non-cyanobacteria. [PDF]

PLoS ONE, 2011
Cyanobacteria are thought to be the main N(2)-fixing organisms (diazotrophs) in marine pelagic waters, but recent molecular analyses indicate that non-cyanobacterial diazotrophs are also present and active.
Hanna Farnelid, Anders F Andersson, Stefan Bertilsson, Waleed Abu Al-Soud, Lars H Hansen, Søren Sørensen, Grieg F Steward, Åke Hagström, Lasse Riemann   +8 more
doaj   +1 more source

Network analysis reveals ecological links between N-fixing bacteria and wood-decaying fungi. [PDF]

PLoS ONE, 2014
Nitrogen availability in dead wood is highly restricted and associations with N-fixing bacteria are thought to enable wood-decaying fungi to meet their nitrogen requirements for vegetative and generative growth.
Björn Hoppe, Tiemo Kahl, Peter Karasch, Tesfaye Wubet, Jürgen Bauhus, François Buscot, Dirk Krüger   +6 more
doaj   +1 more source

Seasonal and long-term effects of nutrient additions and liming on the nifH gene in cerrado soils under native vegetation

iScience, 2021
Summary: Biological nitrogen fixation (BNF) represents the main input source of N in tropical savannas. BNF could be particularly important for Brazilian savannas (known as Cerrado) that show a highly conservative N cycle.
Rafaella Silveira, Thiago de Roure Bandeira de Mello, Maria Regina Silveira Sartori, Gabriel Sérgio Costa Alves, Fernando Campos de Assis Fonseca, Carla Simone Vizzotto, Ricardo Henrique Krüger, Mercedes Maria da Cunha Bustamante   +7 more
doaj   +1 more source

Diverse diazotrophs are present on sinking particles in the North Pacific Subtropical Gyre. [PDF]

, 2019
Sinking particles transport carbon and nutrients from the surface ocean into the deep sea and are considered hot spots for bacterial diversity and activity.
Collins, James R, Farnelid, Hanna, Ossolinski, Justin E, Ploug, Helle, Turk-Kubo, Kendra, Van Mooy, Benjamin AS, Zehr, Jonathan P   +6 more
core   +1 more source

Temporal variability of diazotroph community composition in the upwelling region off NW Iberia. [PDF]

, 2019
Knowledge of the ecology of N2-fixing (diazotrophic) plankton is mainly limited to oligotrophic (sub)tropical oceans. However, diazotrophs are widely distributed and active throughout the global ocean.
Bode, Antonio, Fernández-Carrera, Ana, Marañón, Emilio, Moreira-Coello, Víctor, Mouriño-Carballido, Beatriz, Sintes, Eva, Turk-Kubo, Kendra, Varela, Marta M, Zehr, Jonathan P   +8 more
core   +2 more sources

Analysis of nifH-RNA reveals phylotypes related to Geobacter and Cyanobacteria as important functional components of the N2-fixing community depending on depth and agricultural use of soil [PDF]

, 2017
In this survey, a total of 80 787 reads and 28 171 unique NifH protein sequences were retrieved from soil RNA. This dataset extends our knowledge about the structure and diversity of the functional diazotrophic communities in agricultural soils from ...
Aguilar, Orlando Mario, Behrends Kraemer, Filipe, Calderoli, Priscila Anabel, Collavino, Mónica Mariana, Morrás, Héctor José María   +4 more
core   +3 more sources

Comparative phylogeny of rrs and nifH genes in the Bacillaceae [PDF]

International Journal of Systematic and Evolutionary Microbiology, 1999
The rrs (16S rDNA) gene sequences of nitrogen-fixing endospore-forming bacilli isolated from the rhizosphere of wheat and maize were determined in order to infer their phylogenetic position in the Bacillaceae. These rhizosphere strains form a monophyletic cluster with Paenibacillus azotofixans, Paenibacillus polymyxa and Paenibacillus macerans.
Achouak, Wafa, Normand, Philippe, Heulin, T.   +2 more
openaire   +3 more sources