Modeling dynamic oxygen permeability as a mechanism to mitigate oxygen-induced stresses on photosynthesis and N2 fixation in marine Trichodesmium [PDF]
Microbiology SpectrumTrichodesmium, the predominant marine diazotrophic cyanobacterium, concurrently performs nitrogen (N2) fixation and photosynthesis, the latter of which produces oxygen (O2) that inhibits N2 fixation.
Weicheng Luo +4 more
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N2 Fixation in Trichodesmium Does Not Require Spatial Segregation from Photosynthesis [PDF]
mSystems, 2022 The dominant marine filamentous N2 fixer, Trichodesmium, conducts photosynthesis and N2 fixation during the daytime. Because N2 fixation is sensitive to O2, some previous studies suggested that spatial segregation of N2 fixation and photosynthesis is ...
Weicheng Luo +3 more
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Metabolic biochemical models of N2 fixation for sulfide oxidizers, methanogens, and methanotrophs [PDF]
mSystemsDinitrogen (N2) fixation provides bioavailable nitrogen to the biosphere. However, in some habitats (e.g., sediments), the metabolic pathways of organisms carrying out N2 fixation are unclear. We present metabolic models representing various chemotrophic
Meng Gao +11 more
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The sensitivity of marine N2 fixation to dissolved inorganic nitrogen
Frontiers in Microbiology, 2012 The dominant process adding nitrogen (N) to the ocean, di-nitrogen (N2) fixation, is mediated by prokaryotes (diazotrophs) sensitive to a variety of environmental factors.
Angela eKnapp
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Variation in symbiotic N2 fixation rates among Sphagnum mosses. [PDF]
PLoS ONE, 2020 Biological nitrogen (N) fixation is an important process supporting primary production in ecosystems, especially in those where N availability is limiting growth, such as peatlands and boreal forests.
Eva van den Elzen +4 more
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Global Marine N2 Fixation Estimates: From Observations to Models [PDF]
Frontiers in Microbiology, 2018 Fixed nitrogen (N) limits productivity across much of the low-latitude ocean. The magnitude of its inventory results from the balance of N input and N loss, the latter largely occurring in regionally well-defined low-oxygen waters and sediments ...
Angela Landolfi +3 more
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Temperate southern Australian coastal waters are characterised by surprisingly high rates of nitrogen fixation and diversity of diazotrophs [PDF]
PeerJ, 2021 Biological dinitrogen (N2) fixation is one mechanism by which specific microorganisms (diazotrophs) can ameliorate nitrogen (N) limitation. Historically, rates of N2 fixation were believed to be limited outside of the low nutrient tropical and ...
Lauren F. Messer +4 more
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Nitrogen fixation: A poorly understood process along the freshwater‐marine continuum
Limnology and Oceanography Letters, 2022 N2 fixation is a major component of the global N cycle and has been extensively studied in open‐ocean and terrestrial ecosystems. Yet rates and ecological dynamics remain virtually unknown for the inland and coastal aquatic ecosystems (lakes, wetlands ...
Amy M. Marcarelli +2 more
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Contrasting seasonal responses in dinitrogen fixation between shallow and deep-water colonies of the model coral Stylophora pistillata in the northern Red Sea. [PDF]
PLoS ONE, 2018 Tropical corals are often associated with dinitrogen (N2)-fixing bacteria (diazotrophs), and seasonal changes in key environmental parameters, such as dissolved inorganic nitrogen (DIN) availability and seawater temperature, are known to affect N2 ...
Vanessa N Bednarz +6 more
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Levels of daily light doses under changed day-night cycles regulate temporal segregation of photosynthesis and N2 Fixation in the cyanobacterium Trichodesmium erythraeum IMS101. [PDF]
PLoS ONE, 2015 While the diazotrophic cyanobacterium Trichodesmium is known to display inverse diurnal performances of photosynthesis and N2 fixation, such a phenomenon has not been well documented under different day-night (L-D) cycles and different levels of light ...
Xiaoni Cai, Kunshan Gao
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