Results 21 to 30 of about 9,408 (223)

Defining the Realized Niche of the Two Major Clades of Trichodesmium: A Study on the West Florida Shelf

Frontiers in Marine Science, 2022
The cyanobacterium Trichodesmium plays an essential role supporting ocean productivity by relieving nitrogen limitation via dinitrogen (N2) fixation. The two common Trichodesmium clades, T. erythraeum and T.
Kristina A. Confesor, Corday R. Selden, Corday R. Selden, Kimberly E. Powell, Laura A. Donahue, Travis Mellett, Travis Mellett, Salvatore Caprara, Angela N. Knapp, Kristen N. Buck, P. Dreux Chappell   +10 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

Spatial variation in N₂-fixation rate and diazotroph activity in the Tropical Atlantic [PDF]

Biogeosciences, 2007
A variety of N2-fixers occur in oligotrophic waters and these diazotrophs make a substantial contribution to the nitrogen budget of the upper water column.
J. P. Montoya, M. Voss, D. G. Capone
doaj   +1 more source

Metabolic Model of the Nitrogen-Fixing Obligate Aerobe Azotobacter vinelandii Predicts Its Adaptation to Oxygen Concentration and Metal Availability

mBio, 2021
There is considerable interest in promoting biological nitrogen fixation (BNF) as a mechanism to reduce the inputs of nitrogenous fertilizers in agriculture, but considerable fundamental knowledge gaps still need to be addressed.
Alexander B. Alleman, Florence Mus, John W. Peters   +2 more
doaj   +1 more source

Lipopolysaccharides in diazotrophic bacteria [PDF]

Frontiers in Cellular and Infection Microbiology, 2014
Biological nitrogen fixation (BNF) is a process in which the atmospheric nitrogen (N2) is transformed into ammonia (NH3) by a select group of nitrogen-fixing organisms, or diazotrophic bacteria. In order to furnish the biologically useful nitrogen to plants, these bacteria must be in constant molecular communication with their host plants.
openaire   +3 more sources

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

Dissolved Organic Matter Influences N2 Fixation in the New Caledonian Lagoon (Western Tropical South Pacific)

Frontiers in Marine Science, 2018
Specialized prokaryotes performing biological dinitrogen (N2) fixation (“diazotrophs”) provide an important source of fixed nitrogen in oligotrophic marine ecosystems such as tropical and subtropical oceans. In these waters, cyanobacterial photosynthetic
Mar Benavides, Mar Benavides, Chloé Martias, Hila Elifantz, Ilana Berman-Frank, Cécile Dupouy, Sophie Bonnet   +6 more
doaj   +1 more source

Diazotroph Diversity Associated With Scleractinian Corals and Its Relationships With Environmental Variables in the South China Sea

Frontiers in Physiology, 2020
Coral reef ecosystems cannot operate normally without an effective nitrogen cycle. For oligotrophic coral reef areas, coral-associated diazotrophs are indispensable participants in the nitrogen cycle.
Jiayuan Liang, Jiayuan Liang, Jiayuan Liang, Kefu Yu, Kefu Yu, Kefu Yu, Yinghui Wang, Yinghui Wang, Yinghui Wang, Xueyong Huang, Xueyong Huang, Xueyong Huang, Wen Huang, Wen Huang, Wen Huang, Zhenjun Qin, Zhenjun Qin, Zhenjun Qin, Guanghua Wang, Guanghua Wang, Guanghua Wang, Hongfei Su, Hongfei Su, Hongfei Su, Biao Chen, Biao Chen, Biao Chen, Zhengchao Wu   +27 more
doaj   +1 more source

Cell-specific measurements show nitrogen fixation by particle-attached putative non-cyanobacterial diazotrophs in the North Pacific Subtropical Gyre

Nature Communications, 2022
Nitrogen-fixing (diazotrophic) cyanobacteria provide a critical nutrient input to the ocean. Non-cyanobacterial diazotrophs are also thought to contribute, but they have not been observed to fix nitrogen.
Katie J. Harding, Kendra A. Turk-Kubo, Esther Wing Kwan Mak, Peter K. Weber, Xavier Mayali, Jonathan P. Zehr   +5 more
doaj   +1 more source

Search for endophytic diazotrophs in barley seeds [PDF]

Brazilian Journal of Microbiology, 2014
Eight endophytic isolates assigned to Pseudomonas, Azospirillum, and Bacillus genera according to pheno-genotypic features were retrieved from barley seeds under selective pressure for nitrogen-fixers. Genetic relationships among related isolates were investigated through RAPD.
S. Zawoznik, Myriam, C. Vázquez, Susana, Díaz Herrera, Silvana M., D. Groppa, María   +3 more
openaire   +5 more sources