A5081018853- Paleontology and Stratigraphy of Fossils
- Diatoms and Algae Research
- Advanced biosensing and bioanalysis techniques
- Calcium Carbonate Crystallization and Inhibition
- Protist diversity and phylogeny
- Marine Biology and Ecology Research
- Ecology and Vegetation Dynamics Studies
- Methane Hydrates and Related Phenomena
- Plant Ecology and Taxonomy Studies
- Marine and coastal ecosystems
- Plant and animal studies
Weizmann Institute of Science
2021-2023
Agricultural Research Organization
2020
The development of calcification by the coccolithophores had a profound impact on ocean carbon cycling, but evolutionary steps leading to formation these complex biomineralized structures are not clear. Heterococcoliths consisting intricately shaped calcite crystals formed intracellularly diploid life cycle phase. Holococcoliths simple rhombic can be produced haploid stage thought extracellularly, representing an independent origin calcification. We use advanced microscopy techniques...
Abstract Diatoms are unicellular algae characterized by silica cell walls. These elements known to be formed intracellularly in membrane-bound deposition vesicles and exocytosed after completion. How diatoms maintain membrane homeostasis during the exocytosis of these large rigid remains unknown. Here we study dynamics wall formation two model diatom species, using live-cell confocal microscopy, transmission electron microscopy cryo-electron tomography. Our results show that its formation,...
Coccolithophores are a group of unicellular marine algae that shape global geochemical cycles via the production calcium carbonate crystals. Interestingly, different life‐cycle phases same coccolithophore species produce very calcitic scales, called coccoliths. In widely studied diploid phase, crystals have anisotropic and complex morphologies, while haploid cells coccoliths consisting solely calcite with simple rhombohedral morphology. Understanding how these two control crystallization is...
Abstract Background The wild radishes, Raphanus raphanistrum and R. pugioniformis (Brassicaceae) are native to the East Mediterranean region. However, whereas is widely distributed worldwide, endemic limited specific habitats. In diaspores of indehiscent fruits comprise glabrous, light, single-seeded segments, intact heavy covered with spiny backward-pointing trichomes. We aimed investigate whether structure was directly associated long- short-range dispersal in , respectively. further...
Abstract Diatoms are unicellular algae, characterized by silica cell walls. The elements formed intracellularly in a membrane-bound deposition vesicle (SDV), and exocytosed after completion. How diatoms maintain membrane homeostasis during the exocytosis of these large rigid is long-standing enigma. We studied dynamics wall formation two model diatom species, using live-cell confocal microscopy, transmission electron microscopy cryo-electron tomography. Our results show that mineral phase it...