Results 21 to 30 of about 5,029 (176)

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

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

In Rhizobium japonicum the nitrogenase genes nifH and nifDK are separated [PDF]

Journal of Bacteriology, 1983
In contrast to Klebsiella pneumoniae or fast-growing Rhizobium species, such as R. meliloti, where the nitrogenase structural genes are clustered in one operon (nifHDK), in slow-growing Rhizobium japonicum 110, nifH and nifDK are on separate operons.
K, Kaluza, M, Fuhrmann, M, Hahn, B, Regensburger, H, Hennecke   +4 more
openaire   +2 more sources

The Abundance of the nifH Gene Became Higher and the nifH-Containing Diazotrophic Bacterial Communities Changed During Primary Succession in the Hailuogou Glacier Chronosequence, China [PDF]

Frontiers in Microbiology, 2021
Primary successional ecosystems and the related soil development are often N limited. To date, N2-fixing communities during primary succession in alpine ecosystems have remained underexplored. In this study, we applied quantitative PCR (qPCR) quantitation and targeted amplicon sequencing of nifH in the Hailuogou Glacier foreland to investigate the ...
Yingyan Wang, Yulan Chen, Qinyu Xue, Quanju Xiang, Ke Zhao, Xiumei Yu, Qiang Chen, Menggen Ma, Hao Jiang, Xiaoping Zhang, Petri Penttinen, Yunfu Gu   +11 more
openaire   +3 more sources

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

Rhizobium japonicum nitrogenase Fe protein gene (nifH) [PDF]

Journal of Bacteriology, 1984
A 12.1-kilobase PstI fragment from Rhizobium japonicum, which contains homology to both the Klebsiella pneumoniae and the Rhizobium meliloti nifH genes, was cloned into vector pHE3 . The nifH -homologous region was localized on the restriction enzyme cleavage map by Southern blot hybridization experiments. DNA fragments overlapping the R.
M, Fuhrmann, H, Hennecke
openaire   +2 more sources

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

Diverse and Novel nifH and nifH -Like Gene Sequences in the Deep-Sea Methane Seep Sediments of the Okhotsk Sea [PDF]

Applied and Environmental Microbiology, 2009
ABSTRACT Diverse nifH and nifH -like gene sequences were obtained from the deep-sea surface sediments of the methane hydrate-bearing Okhotsk Sea. Some sequences formed novel families of the NifH or NifH-like proteins, of currently unresolved bacterial or archaeal origin.
Hongyue, Dang, Xiwu, Luan, Jingyi, Zhao, Jing, Li   +3 more
openaire   +2 more sources

Understanding the expression dynamics of symbiont rhizobial nifH and nitrogen assimilatory NR and GS genes in dry bean (Phaseolus vulgaris L.) genotypes at various growth stages

Legume Science, 2020
Selection of dry bean (Phaseolus vulgaris L.) cultivars based on their symbiotic nitrogen fixation (SNF) could reduce the fertilizer N requirement. The nifH gene in the bacterial symbiont facilitates the organic N assimilation by N‐assimilatory enzymes ...
Debankur Sanyal, Shyam Solanki, Gazala Ameen, Robert S. Brueggeman, Amitava Chatterjee   +4 more
doaj   +1 more source