Selection Maintains Photosynthesis in a Symbiotic Cyanobacterium Despite Redundancy With its Fern Host. [PDF]
Mol Biol EvolFriar L +5 more
europepmc +1 more source
Cooperation and Competition Were Primary Driving Forces for Biological Evolution. [PDF]
Microb PhysiolSaier MH.
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Spatial Distributions of Active Pico- and Nano-Haptophytes (Eukaryota, Hacrobia) in the Tropical and Subtropical Western Pacific Ocean. [PDF]
MicroorganismsLi W, Liao Y, Jiao N, Xu D.
europepmc +1 more source
<i>NifH</i> gene amplicon sequencing and metagenomic approaches are complementary in assessing diazotroph diversity. [PDF]
ISME CommunCheung S +5 more
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Light and depth dependency of nitrogen fixation by the non‐photosynthetic, symbiotic cyanobacterium UCYN‐A [PDF]
Environmental Microbiology, 2021 Summary The symbiotic cyanobacterium UCYN‐A is one of the most globally abundant marine dinitrogen (N 2 )‐fixers, but cultures have not been available and its biology and ecology are poorly understood.
Mary Gradoville +2 more
exaly +15 more sources
Unexpected presence of the nitrogen‐fixing symbiotic cyanobacterium UCYN‐A in Monterey Bay, California [PDF]
Journal of Phycology, 2020 In the last decade, the known biogeography of nitrogen fixation in the ocean has been expanded to colder and nitrogen‐rich coastal environments. The symbiotic nitrogen‐fixing cyanobacteria group A (UCYN‐A) has been revealed as one of the most abundant and widespread nitrogen‐fixers, and includes several sublineages that live associated with genetically
Jonathan P Zehr +2 more
exaly +12 more sources
Unusual marine unicellular symbiosis with the nitrogen-fixing cyanobacterium UCYN-A [PDF]
Nature Microbiology, 2016 Nitrogen fixation - the reduction of dinitrogen (N2) gas to biologically available nitrogen (N) - is an important source of N for terrestrial and aquatic ecosystems. In terrestrial environments, N2-fixing symbioses involve multicellular plants, but in the marine environment these symbioses occur with unicellular planktonic algae.
Jonathan P Zehr +2 more
exaly +10 more sources
The small unicellular diazotrophic symbiont, UCYN-A, is a key player in the marine nitrogen cycle
Nature Microbiology, 2016 Microbial dinitrogen (N2) fixation, the nitrogenase enzyme-catalysed reduction of N2 gas into biologically available ammonia, is the main source of new nitrogen (N) in the ocean. For more than 50 years, oceanic N2 fixation has mainly been attributed to the activity of the colonial cyanobacterium Trichodesmium1,2. Other smaller N2-fixing microorganisms (
Marcel Kuypers +2 more
exaly +9 more sources
New insights into the ecology of the globally significant uncultured nitrogen-fixing symbiont UCYN-A [PDF]
Aquatic Microbial Ecology, 2016 Cyanobacterial nitrogen-fixers (diazotrophs) play a key role in biogeochemical cycling of carbon and nitrogen in the ocean. In recent years, the unusual symbiotic diazotrophic cyanobacterium Atelocyanobacterium thalassa (UCYN-A) has been recognized as one of the major diazotrophs in the tropical and subtropical oceans. In this review, we summarize what
Jonathan P Zehr, Kendra Turk-Kubo
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Comparative genomics reveals surprising divergence of two closely related strains of uncultivated UCYN-A cyanobacteria [PDF]
ISME Journal, 2014 Abstract Marine planktonic cyanobacteria capable of fixing molecular nitrogen (termed ‘diazotrophs’) are key in biogeochemical cycling, and the nitrogen fixed is one of the major external sources of nitrogen to the open ocean. Candidatus Atelocyanobacterium thalassa (UCYN-A) is a diazotrophic cyanobacterium known for its widespread ...
Patricia Sánchez-Baracaldo +2 more
exaly +7 more sources