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  • 1
    Online Resource
    Online Resource
    Marine Nitrogen Fixation (2021)
    Cham : Springer International Publishing | Cham : Imprint: Springer
    Details Availability
    Keywords: Marine sciences. ; Freshwater. ; Geobiology. ; Microbiology. ; Aquatic ecology .
    Description / Table of Contents: Chapter1: Nitrogen Fixation in the Marine Environment -- Chapter2: Fundamentals of N2 Fixation -- Chapter3: History of Research on Marine N2 Fixation -- Chapter4: Microorganisms and Habitats -- Chapter5: Measurements of Organism Abundances and Activities -- Chapter6: Factors Controlling N2 Fixation -- Chapter7: Biogeography of N2 Fixation in the Surface Ocean -- Chapter8: N2 Fixation in Ocean Basins -- Chapter9: Marine N2 Fixation, Global Change and the Future -- Chapter10: Summary and Conclusions.
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource(XV, 186 p. 36 illus., 31 illus. in color.)
    Edition: 1st ed. 2021.
    ISBN: 9783030677466
    URL: https://doi.org/10.1007/978-3-030-67746-6
    DOI: 10.1007/978-3-030-67746-6
    Language: English
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  • 2
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    Unusual marine unicellular symbiosis with the nitrogen-fixing cyanobacterium UCYN-A (2016)
    Springer Nature
    In:  Nature Microbiology, 2 (16214).
    Details
    Publication Date: 2020-06-24
    Description: 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. An unusual symbiosis between an uncultivated unicellular cyanobacterium (UCYN-A) and a haptophyte picoplankton alga was recently discovered in oligotrophic oceans. UCYN-A has a highly reduced genome, and exchanges fixed N for fixed carbon with its host. This symbiosis bears some resemblance to symbioses found in freshwater ecosystems. UCYN-A shares many core genes with the 'spheroid bodies' of Epithemia turgida and the endosymbionts of the amoeba Paulinella chromatophora. UCYN-A is widely distributed, and has diversified into a number of sublineages that could be ecotypes. Many questions remain regarding the physical and genetic mechanisms of the association, but UCYN-A is an intriguing model for contemplating the evolution of N2-fixing organelles.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1038/nmicrobiol.2016.214
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    OceanRep: Article in a Scientific Journal - peer-reviewed
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