Effects of nocodazole and latrunculin B on locomotion of amoeboid cells of Rhizochromulina sp. strain B44 (Heterokontophyta, Dictyochophyceae).

Rhizochromulina is a genus of unicellular dictyochophycean algae (Heterokontophyta), comprising a single species R. marina and numerous strains. Recently, we described the first arctic rhizochromuline-Rhizochromulina sp.

Putative MutS2 Homologs in Algae: More Goods in Shopping Bag?

MutS2 proteins are presumably involved in either control of recombination or translation quality control in bacteria. MutS2 homologs have been found in plants and some algae; however, their actual diversity in eukaryotes remains unknown. We found putative MutS2 homologs in various species of photosynthetic eukaryotes and performed a detailed analysis of the revealed amino acid sequences.

The first arctic strain of Rhizochromulina: Morphology, ultrastructure, and position in the evolutionary tree of the order Rhizochromulinales (Heterokontophyta, Dictyochophyceae).

Rhizochromulina marina is a unicellular amoeboid alga capable of forming flagellate cells; it is a single validly named species in the genus. Besides, there are numerous environmental sequences and undescribed strains designated as Rhizochromulina sp. or R.

Phosphorus deficiency induces sexual reproduction in the dinoflagellate Prorocentrum cordatum.

Nitrogen (N) and phosphorus (P) are essential elements whose availability promotes successful growth of phytoplankton and governs aquatic primary productivity. In this study, we investigated the effect of N and/or P deficiency on the sexual reproduction of Prorocentrum cordatum, the dinoflagellate with the haplontic life cycle which causes harmful algal blooms worldwide. In P.

Pelomyxa doughnuta sp. nov. (Archamoebea, Pelobiontida) with an unusual nucleus-glycogen association.

We described Pelomyxa doughnuta sp. nov. and examined it with the use of light, electron, and immunofluorescence microscopy as well as cytochemical methods.