Plocamiomonas psychrophila gen. et sp. nov. (Pelagophyceae, Heterokontophyta), an Arctic marine nanoflagellate characterized by microscopy, pigments and molecular phylogeny ...

• Main Authors: Daugbjerg, Niels, Lara, Cecilie, Gai, Frederik F., Lovejoy, Connie
• Format: Dataset
• Language: unknown
• Published: Taylor & Francis 2024
• Subjects: Microbiology; FOS Biological sciences; Biotechnology; Environmental Sciences not elsewhere classified; Ecology; Biological Sciences not elsewhere classified; Inorganic Chemistry; FOS Chemical sciences; Plant Biology; Baffin Bay; Baffin; Sea ice
• Online Access: https://dx.doi.org/10.6084/m9.figshare.26233249; https://tandf.figshare.com/articles/dataset/_i_Plocamiomonas_psychrophila_i_gen_et_sp_nov_Pelagophyceae_Heterokontophyta_an_Arctic_marine_nanoflagellate_characterized_by_microscopy_pigments_and_molecular_phylogeny/26233249

During a field campaign in Baffin Bay (June, 1998), a sample dominated by small yellow brown biflagellates was collected from a small pocket of liquid water on the sea ice and established into a unialgal culture. Later it was given strain number CCMP2097 and deposited at the NCMA collection. Growth experiments over a range of temperatures and salinities indicated adaptation to variable Arctic conditions. This strain was studied here using light and transmission electron microscopy, HPLC for characterization of photosynthetic pigments and the relationship to related taxa was elucidated from molecular phylogeny. This integrative approach resulted in suggesting Plocamiomonas psychrophila gen. et sp. nov. the first systematically named Arctic species of the Pelagophyceae. Plocamiomonas had two unequally long flagella and the spherical cells measured 7.5 µm in diameter. Novel morphological characters included (1) a swelling on the mature flagellum, (2) a bi-layered theca, thin elongated arm-like structures ...