Dag Klaveness

TL;DR: Analyses of SSU rDNA from the plastid and the nuclear genome of these dinoflagellate species indicate that they have acquired their plastids via endosymbiosis of a haptophyte, and distance, parsimony, and maximum-likelihood phylogenetic analyses of plastido rRNA gene sequences place the three species within the haptophical clade.

TL;DR: Only a few successful transitions between these habitats have taken place over the entire history of Perkinsea, suggesting that the boundary between marine and fresh waters may constitute a barrier to cross-colonizations for intracellular parasites.

TL;DR: Extracellular polymeric substances (EPS) from four filamentous cyanobacteria Microcoleus vaginatus, Scytonema javanicum, Phormidium tenue and Nostoc sp. were investigated for their chemical composition, structure and physical properties.

TL;DR: It is indicated that telonemids and centrohelids are members of an emerging major group of eukaryotes also comprising cryptomonads and haptophytes, and this group is possibly closely related to the SAR clade comprising stramenopiles (heterokonts), alveolates, and Rhizaria.

TL;DR: It is suggested that the lacustrine P. aciculiferum and the marine-brackish S. hangoei diverged very recently, after a marine–freshwater transition that exposed the ancestral populations to different selective pressures, indicating a significant role of natural selection in the divergence of free-living microbes, despite their virtually unrestricted dispersal capabilities.