Results 31 to 40 of about 7,283,243 (235)

Nodulation of Shepherdia ×utahensis ‘Torrey’ and the Diversity of Symbiotic Frankia Strains

open access: yesHortScience, 2021
Shepherdia ×utahensis ‘Torrey’ (hybrid buffaloberry) is an actinorhizal plant that can form symbiotic nodules with the actinobacterial genus Frankia. However, little research has been conducted to investigate the presence of Frankia in their nodules and ...
Ji-Jhong Chen   +4 more
doaj   +1 more source

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

open access: yesLegume 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   +4 more
doaj   +1 more source

Non-immune fetal hydrops: etiology and outcome according to gestational age at diagnosis. [PDF]

open access: yes, 2020
OBJECTIVE: Fetal hydrops is associated with increased perinatal morbidity and mortality. The etiology and outcome of fetal hydrops may differ according to the gestational age at diagnosis.
A. Bhide   +12 more
core   +2 more sources

Cloning and sequencing of the nifH gene ofDesulfovibrio gigas [PDF]

open access: yesFEMS Microbiology Letters, 1989
The Desulfovibrio gigas nifH gene has been cloned and sequenced. It consists of an open-reading frame of 822 base pairs encoding a 274 amino acid polypeptide. A potential ntrA-dependent promotor sequence is present. The gene lacks an upstream activator sequence homologous to those often found in nif genes subject to activation by nifA.
H M, Kent, M, Buck, D J, Evans
openaire   +2 more sources

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

open access: yesJournal 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   +4 more
openaire   +2 more sources

High diversity of nitrogen-fixing bacteria in the upper reaches of the Heihe River, northwestern China [PDF]

open access: yesBiogeosciences, 2013
Vegetation plays a key role in water conservation in the southern Qilian Mountains (northwestern China), located in the upper reaches of the Heihe River. Nitrogen-fixing bacteria are crucial for the protection of the nitrogen supply for vegetation in the
X. S. Tai   +8 more
doaj   +1 more source

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

open access: yes, 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   +6 more
core   +1 more source

Nodularia sp. nifH gene transcripts in the Baltic Sea proper [PDF]

open access: yesJournal of Plankton Research, 2007
While bacterioplankton indisputably control vital biogeochemical paths in the cycling of carbon and nutrients in the world’s oceans, our knowledge about the functional and genetic diversity of bacterioplankton communities is negligible. In this thesis, molecular and more traditional microbiological methods were used to study the specific function of N2-
Kjärstin H. Boström   +3 more
openaire   +1 more source

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]

open access: yes, 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   +4 more
core   +3 more sources

Comparison of nifH Gene Pools in Soils and Soil Microenvironments with Contrasting Properties [PDF]

open access: yesApplied and Environmental Microbiology, 2001
ABSTRACTThe similarities and differences in the structures of thenifHgene pools of six different soils (Montrond, LCSA-p, Vernon, Dombes, LCSA-c, and Thysse Kaymor) and five soil fractions extracted from LCSA-c were studied. Bacterial DNA was directly extracted from the soils, and a region of thenifHgene was amplified by PCR and analyzed by restriction.
F. Poly   +4 more
semanticscholar   +4 more sources

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