Results 21 to 30 of about 7,283,243 (235)
mSphere, 2021 Nitrogen fixation, a distinct process incorporating the inactive atmospheric nitrogen into the active biological processes, has been a major topic in biological and geochemical studies.
Kazumori Mise +3 more
doaj +1 more source
New Phytologist, 2021 Bacterial communities form the basis of biogeochemical processes and determine plant growth and health. Mosses harbour diverse bacterial communities that are involved in nitrogen fixation and carbon cycling.
I. Klarenberg +6 more
semanticscholar +1 more source
Journal of Phycology, 2022 Cyanobacterial N2‐fixing microorganisms (diazotrophs) play a critical role in nitrogen and carbon cycling in the oceans; hence, accurate measurements of diazotroph abundance are imperative for understanding ocean biogeochemistry.
M. Gradoville +4 more
semanticscholar +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
Detection and characterization of cyanobacterial nifH genes [PDF]
Applied and Environmental Microbiology, 1994 The DNA sequence of a 359-bp fragment of nifH was determined for the heterocystous strains Anabaena sp. strain CA (ATCC 33047), Nostoc muscorum UTEX 1933, a Nostoc sp., Gloeothece sp. strain ATCC 27152, Lyngbya lagerheimii UTEX 1930, and Plectonema boryanum IU 594.
J, Ben-Porath, J P, Zehr
openaire +2 more sources
The response of diazotrophs to nutrient amendment in the South China Sea and western North Pacific [PDF]
Biogeosciences, 2022 The availability of iron (Fe) and phosphorus (P) has been shown to be a key factor regulating rates of nitrogen fixation in the western subtropical Pacific.
Z. Wen +13 more
doaj +1 more source
<i>NifH</i> gene amplicon sequencing and metagenomic approaches are complementary in assessing diazotroph diversity. [PDF]
ISME CommunAbstract Exploring the diversity of diazotrophs is key to understanding their role in supplying fixed nitrogen that supports marine productivity. A nested PCR assay using the universal primer set nifH1-nifH4, which targets the nitrogenase (nifH) gene, is a widely used approach for studying marine diazotrophs by amplicon sequencing ...
Cheung S +5 more
europepmc +4 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 +8 more
doaj +1 more source
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 +2 more
openaire +3 more sources
Diazotrophs Show Signs of Restoration in Amazon Rain Forest Soils with Ecosystem Rehabilitation. [PDF]
, 2020 Biological nitrogen fixation can be an important source of nitrogen in tropical forests that serve as a major CO2 sink. Extensive deforestation of the Amazon is known to influence microbial communities and the biogeochemical cycles they mediate. However,
Bohannan, Brendan JM +5 more
core +3 more sources