Results 41 to 50 of about 468 (140)

Cyanobacterial Diazotroph Distributions in the Western South Atlantic

Frontiers in Marine Science, 2022
Inputs of new nitrogen by cyanobacterial diazotrophs are critical to ocean ecosystem structure and function. Relative to other ocean regions, there is a lack of data on the distribution of these microbes in the western South Atlantic. Here, the abundance
Amália Maria Sacilotto Detoni, Ajit Subramaniam, Sheean T. Haley, Sonya T. Dyhrman, Sonya T. Dyhrman, Paulo H. R. Calil   +5 more
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Intriguing diversity among diazotrophic picoplankton along a Mediterranean transect: a dominance of rhizobia [PDF]

Biogeosciences, 2011
The Mediterranean Sea is one of the most oligotrophic marine areas on earth where nitrogen fixation has formally believed to play an important role in carbon and nitrogen fluxes.
M. Le Moal, H. Collin, I. C. Biegala
doaj   +1 more source

Temporal Patterns and Intra- and Inter-Cellular Variability in Carbon and Nitrogen Assimilation by the Unicellular Cyanobacterium Cyanothece sp. ATCC 51142

Frontiers in Microbiology, 2021
Unicellular nitrogen fixing cyanobacteria (UCYN) are abundant members of phytoplankton communities in a wide range of marine environments, including those with rapidly changing nitrogen (N) concentrations.
Lubos Polerecky, Takako Masuda, Meri Eichner, Meri Eichner, Sophie Rabouille, Sophie Rabouille, Marie Vancová, Michiel V. M. Kienhuis, Gabor Bernát, Gabor Bernát, Jose Bonomi-Barufi, Douglas Andrew Campbell, Pascal Claquin, Jan Červený, Mario Giordano, Mario Giordano, Eva Kotabová, Jacco Kromkamp, Ana Teresa Lombardi, Martin Lukeš, Ondrej Prášil, Susanne Stephan, Susanne Stephan, David Suggett, Tomas Zavřel, Kimberly H. Halsey   +25 more
doaj   +1 more source

Highly heterogeneous diazotroph communities in the Kuroshio Current and the Tokara Strait, Japan.

PLoS ONE, 2017
In this study, we used 454-pyrosequencing to report the highly diverse diazotroph communities in the Kuroshio and its adjacent waters along a transect across the Tokara Strait, Japan.
Shunyan Cheung, Koji Suzuki, Hiroaki Saito, Yu Umezawa, Xiaomin Xia, Hongbin Liu   +5 more
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In Situ Diazotroph Population Dynamics Under Different Resource Ratios in the North Pacific Subtropical Gyre

Frontiers in Microbiology, 2018
Major advances in understanding the diversity, distribution, and activity of marine N2-fixing microorganisms (diazotrophs) have been made in the past decades, however, large gaps in knowledge remain about the environmental controls on growth and ...
Kendra A. Turk-Kubo, Paige Connell, David Caron, Mary E. Hogan, Hanna M. Farnelid, Hanna M. Farnelid, Jonathan P. Zehr   +6 more
doaj   +1 more source

A Short Comparison of Two Marine Planktonic Diazotrophic Symbioses Highlights an Un-quantified Disparity

Frontiers in Marine Science, 2018
Some N2-fixing cyanobacteria form symbiosis with diverse protists. In the plankton two groups of diazotrophic symbioses are described: (1) a collective group of diatoms which associate with heterocystous cyanobacteria (Diatom Diazotroph Associations, DDA)
Andrea Caputo, Marcus Stenegren, Massimo C. Pernice, Rachel A. Foster   +3 more
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Nitrogen fixation and the diazotroph community in the temperate coastal region of the northwestern North Pacific [PDF]

Biogeosciences, 2015
Nitrogen fixation in temperate oceans is a potentially important, but poorly understood process that may influence the marine nitrogen budget. This study determined seasonal variations in nitrogen fixation and the diazotroph community within the euphotic
T. Shiozaki, T. Nagata, M. Ijichi, K. Furuya   +3 more
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Response of Posidonia oceanica (L.) Delile and Its Associated N2 Fixers to Different Combinations of Temperature and Light Levels

Frontiers in Marine Science, 2022
The increasing occurrence of heat waves and water turbidity are threats to the persistence of seagrass meadows. Their effects on the productivity of seagrasses and the functioning of their associated microorganisms have not been studied extensively.
Manuela Gertrudis García-Márquez, Víctor Fernández-Juárez, José Carlos Rodríguez-Castañeda, Nona S. R. Agawin   +3 more
doaj   +1 more source

Dissolved Organic Matter Impacts Nitrogen Fixation in the Arctic Ocean

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 10, October 2026.
Abstract Climate change‐driven sea ice loss, increased primary production, and nitrogen depletion are reshaping biogeochemistry in the Arctic Ocean (AO). These changes potentially increase the importance of nitrogen fixation, the conversion of dinitrogen gas into bioavailable ammonium, carried out by microorganisms called diazotrophs.
Stine Zander, Lisa W. von Friesen, Amane Fujiwara, Urban Wünsch, Olivier Grosso, Mar Benavides, Takuhei Shiozaki, Colin A. Stedmon, Lasse Riemann   +8 more
wiley   +1 more source

Cyanobacterial symbionts diverged in the late Cretaceous towards lineage-specific nitrogen fixation factories in single-celled phytoplankton

Nature Communications, 2016
Nitrogen fixation in oceans is facilitated by associations between marine phytoplankton and cyanobacteria such as UCYN-A. Here, Cornejo-Castillo et al. show that UCYN-A diversified in the late Cretaceous under strong purifying selection to become lineage-
Francisco M. Cornejo-Castillo, Ana M. Cabello, Guillem Salazar, Patricia Sánchez-Baracaldo, Gipsi Lima-Mendez, Pascal Hingamp, Adriana Alberti, Shinichi Sunagawa, Peer Bork, Colomban de Vargas, Jeroen Raes, Chris Bowler, Patrick Wincker, Jonathan P. Zehr, Josep M. Gasol, Ramon Massana, Silvia G. Acinas   +16 more
doaj   +1 more source