Blar i forfatter "Hassett, Brandon Thomas"

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    • Arctic marine fungi: biomass, functional genes, and putative ecological roles 

      Hassett, Brandon Thomas; Borrego, Eli; Vonnahme, Tobias R.; Rämä, Teppo; Kolomiets, M.V.; Gradinger, Rolf (Journal article; Peer reviewed, 2019-02-11)
      Recent molecular evidence suggests a global distribution of marine fungi; however, the ecological relevance and corresponding biological contributions of fungi to marine ecosystems remains largely unknown. We assessed fungal biomass from the open Arctic Ocean by applying novel biomass conversion factors from cultured isolates to environmental sterol and CARD-FISH data. <br>We found an average of ...

    • Eukaryotic microbial richness increases with latitude and decreasing temperature in the Pacific Subarctic domain in late winter 

      Hassett, Brandon Thomas; Gradinger, Rolf (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-06-06)
      The Bering Sea has some of the highest concentrations of inorganic nutrients of any marine system. In the Bering Sea, eukaryotic microbes interface inorganic nutrient sequestration and cycling processes that drive one of the most productive ecosystems globally. Historical surveys of eukaryotic microbial diversity in the Bering Sea have relied on microscopy and culturing-dependent analyses to assess ...

    • A glimpse into the biogeography, seasonality, and ecological functions of arctic marine Oomycota 

      Hassett, Brandon Thomas; Thines, Marco; Buaya, Anthony; Ploch, Sebastian; Gradinger, R. (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-06-20)
      High-latitude environments are warming, leading to changes in biological diversity patterns of taxa. <i>Oomycota</i> are a group of fungal-like organisms that comprise a major clade of eukaryotic life and are parasites of fish, agricultural crops, and algae. The diversity, functionality, and distribution of these organisms are essentially unknown in the Arctic marine environment. Thus, it was our ...

    • New Species of Saprobic Labyrinthulea (=Labyrinthulomycota) and the Erection of a gen. nov. to Resolve Molecular Polyphyly within the Aplanochytrids 

      Hassett, Brandon Thomas; Gradinger, Rolf (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-12-19)
      A culture of a unicellular heterotrophic eukaryote was established from pollen‐baited seawater acquired from the nearshore environment in Tromsø, Norway. Light microscopy revealed the production of ectoplasmic nets and reproduction by biflagellated zoospores, as well as binary division. After culturing and subsequent nucleotide extraction, database queries of the isolate's 18S small ribosomal subunit ...