Results 91 to 100 of about 8,732 (191)
Database J. Biol. Databases Curation, 2014 We describe a nitrogenase gene sequence database that facilitates analysis of the evolution and ecology of nitrogen-fixing organisms. The database contains 32 954 aligned nitrogenase nifH sequences linked to phylogenetic trees and associated sequence ...
J. C. Gaby, D. Buckley
semanticscholar +1 more source
Environmental Microbiology, Volume 28, Issue 2, February 2026.Metatranscriptomic reads from black band disease (BBD) lesions derived from samples collected during the day and night were mapped to near‐complete BBD‐derived metagenome‐assembled genomes to profile diurnal metabolic shifts among key microbial groups. Photosynthesis genes from the cyanobacterium Roseofilum reptotaenium were highly expressed during the
Julia Y. Hung +4 more
wiley +1 more source
Frontiers in Microbiology, 2016 The coral holobiont often resides in oligotrophic waters; both coral cells and their symbiotic dinoflagellates possess ammonium assimilation enzymes and potentially benefit from the nitrogen fixation of coral-associated diazotrophs. However, the seasonal
Yanying Zhang +9 more
doaj +1 more source
Limnology and Oceanography, Volume 71, Issue 1, January 2026.Abstract Heterotrophic diazotrophs are potentially important to the nitrogen cycle in freshwater ecosystems, yet their abundance, N2 fixation rates, diversity, and association with aggregates remain poorly understood. This study elucidates the contribution of freshwater heterotrophic diazotrophs as free‐living or aggregate‐associated cells to total N2 ...
Eyal Geisler +6 more
wiley +1 more source
PLoS ONE, 2013 BackgroundDespite the fact that the fixation of nitrogen is one of the most significant nutrient processes in the terrestrial ecosystem, a thorough study of the spatial and temporal patterns in the abundance and distribution of N-fixing communities has ...
Michele C Pereira E Silva +4 more
doaj +1 more source
Relative Diazotroph Abundance in Symbiotic Red Sea Corals Decreases With Water Depth
Frontiers in Marine Science, 2019 Microbial dinitrogen (N2) fixation (diazotrophy) is a trait critical for coral holobiont functioning. The contribution of N2 fixation to holobiont nitrogen (N) supply likely depends on the ecological niche of the coral holobiont.
Arjen Tilstra +7 more
doaj +1 more source
Environmental Microbiology, 2014 A dataset of 87 020 nifH reads and 16 782 unique nifH protein sequences obtained over 2 years from four locations across a gradient of agricultural soil types in Argentina were analysed to provide a detailed and comprehensive picture of the diversity ...
M. Collavino +8 more
semanticscholar +1 more source
Expression of the Klebsiella pneumoniae nifH gene in Saccharomyces cerevisiae
Enzyme and Microbial Technology, 1987 Dinitrogenase reductase, a component of a complex and highly regulated prokaryotic enzyme, nitrogenase, is expressed in the eukaryote Saccharomyces cerevisiae. A plasmid pH-ADH-1 was constructed that directs the expression of the Klebsiella pneumoniae nifH gene, encoding dinitrogenase reductase, from the yeast alcohol dehydrogenase I promoter.
Claude V. Maina +2 more
openaire +1 more source
Frontiers in Microbiology, 2018 We isolated 65 rhizobial strains from faba bean (Vicia faba L.) from Panxi, China, studied their plant growth promoting ability with nitrogen free hydroponics, genetic diversity with clustered analysis of combined ARDRA and IGS-RFLP, and phylogeny by ...
Yuan X. Chen +7 more
doaj +1 more source
BioTechniques, 2003 Studies of the diversity of microorganisms in the environment have been facilitated by use of PCR and reverse transcription PCR (RT-PCR). Inhibition of the PCR by complex sample matrices and low abundance of some target microorganisms require the use of ...
Jonathan P. Zehr +4 more
doaj +1 more source