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Inositol polyphosphates regulate resilient mechanisms in the green alga Chlamydomonas reinhardtii to adapt to extreme nutrient conditions.
Physiol Plant
January 2025
Institute for Plant Biochemistry and Photosynthesis, Consejo Superior de Investigaciones Científicas, Seville, Spain.
In the context of climate changing environments, microalgae can be excellent organisms to understand molecular mechanisms that activate survival strategies under stress. Chlamydomonas reinhardtii signalling mutants are extremely useful to decipher which strategies photosynthetic organisms use to cope with changeable environments. The mutant vip1-1 has an altered profile of pyroinositol polyphosphates (PP-InsPs), which are signalling molecules present in all eukaryotes and have been connected to P signalling in other organisms including plants, but their implications in other nutrient signalling are still under evaluation.
View Article and Find Full Text PDFCharacterization of Allobodo yubaba sp. nov. and Novijibodo darinka gen. et sp. nov., cultivable free-living species of the phylogenetically enigmatic kinetoplastid taxon Allobodonidae.
J Eukaryot Microbiol
January 2025
Institute for Comparative Genomics, and Department of Biology, Dalhousie University, Halifax, Nova Scotia, Canada.
Kinetoplastids are a large and diverse protist group, spanning ecologically important free-living forms to medically important parasites. The taxon Allobodonidae holds an unresolved position within kinetoplastids, and the sole described species, Allobodo chlorophagus, is uncultivated, being a necrotroph/parasite of macroalgae. Here we describe Allobodo yubaba sp.
View Article and Find Full Text PDFUltrastructure of Olkasia polycarbonata (Euglenozoa, Euglenida) demonstrates cytoskeletal innovations associated with the feeding and flagellar apparatuses.
J Eukaryot Microbiol
January 2025
Department of Botany, University of British Columbia, Vancouver, British Columbia, Canada.
Euglenids are flagellates with diverse modes of nutrition, including the photosynthetic Euglenophyceae, which acquired plastids via secondary endosymbiosis with green algae, and a diverse assemblage of predators of bacteria and other microeukaryotes. Most heterotrophic euglenids have never been cultivated, so their morphology remains poorly characterized and limited to only a few studies. "Ploeotids" are a paraphyletic group representing much of the diversity of heterotrophic euglenids and are characterized by their feeding apparatus and a rigid pellicle of 10-12 longitudinally arranged strips.
View Article and Find Full Text PDFThe nuclear DNA and RNA distribution in Pelomyxa spp. (Amoebozoa, Archamoebae, Pelobiontida) revealed by a simple-to-use DAPI/pyronin staining method.
J Eukaryot Microbiol
January 2025
Laboratory of Cytology of Unicellular Organisms, Institute of Cytology of the Russian Academy of Sciences, St. Petersburg, Russia.
The genus Pelomyxa includes 15 species of anaerobic Archamoebae with remarkable diverse nucleoplasm morphology. Nuclear structures, like chromatin and nucleoli, of several members of the genus was previously identified only based on their ultrastructural similarity to typical structures of somatic cells of higher eukaryotes. Here, we explored an easy-to-use, one-step intravital staining method with DAPI and pyronin to distinguish between DNA and RNA structures in nuclei of unfixed cells of Pelomyxa belevskii and P.
View Article and Find Full Text PDFMorphometric parameters of seeds as a practical method for identifying rare species of the genus L. (Liliaceae) from East Kazakhstan region.
PhytoKeys
January 2025
Department of Plant Taxonomy and Nature Conservation, Faculty of Biology, University of Gdansk, Wita Stwosza 59, 80-308 Gdańsk, Poland University of Gdansk Gdańsk Poland.
The genus includes some of the most important ornamental plants. The aim of this work was to study the seed morphology of species from East Kazakhstan, including seed coat structure. An analysis focused on five taxa from various natural environmental conditions.
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