Microbial arms race: Ballistic “nematocysts” in dinoflagellates represent a new extreme in organelle complexity [PDF]
Science Advances, 2017 We examine the origin of harpoon-like secretory organelles (nematocysts) in dinoflagellate protists. These ballistic organelles have been hypothesized to be homologous to similarly complex structures in animals (cnidarians); but we show, using structural,
Kevin C Wakeman +2 more
exaly +4 more sources
Frontiers in Marine Science, 2019 Marine sponges thrive in benthic environments despite intense spatial competition and predator pressure. The sessile filter-feeders usually compensate their lack of physical defense and behavioral escape by a high level of bioactivity.
Jessica Reichert +2 more
exaly +4 more sources
Journal of Biological Research, 2021 Some species of Cnidarians, well known venomous organisms, are able to induce serious health problems as well as economic and social trouble. A lot of data show that cnidarian venoms can be cytotoxic to cultured cells.
Rossana Morabito +6 more
doaj +2 more sources
Obtainment of Two Monomorphic Nematocysts from Nemopilema nomurai (Cnidaria: Scyphozoa) and Comparative Analysis of the Biological Activities of Their Contents [PDF]
Marine DrugsNemopilema nomurai is a species of common large toxic jellyfish in China seas, and its tentacle tissues contain various types of nematocysts. However, the correlation between the morphology and function of nematocysts still remains unclear. In this study,
Yongfei Lyu +13 more
doaj +2 more sources
Predation on scyphozoan polyps and selective hydrozoan nematocyst incorporation dynamics in an alien aeolid nudibranch [PDF]
Frontiers in ZoologyBackground Aeolid nudibranchs prey on various cnidarians and incorporate nematocysts from their prey into the cnidosac, located at the tip of their cerata for self-defense. This study examined the predator–prey interactions between two nudibranch species,
Hila Dror, Tamar Lotan, Dror Angel
doaj +2 more sources
Nematocyst Types and Characteristics in the Tentacles of Gershwinia thailandensis and Morbakka sp. (Cubozoa: Carybdeida) from the Gulf of Thailand [PDF]
BiologyNematocysts, specialized stinging cells in cnidarians, play a crucial role in both defense and prey capture, containing venomous, coiled tubes within a capsule.
Thippawan Yasanga +6 more
doaj +2 more sources
Non-muscle myosin II drives critical steps of nematocyst morphogenesis [PDF]
iScience, 2023 Summary: Nematocysts are generated by secretion of proteins into a post-Golgi compartment. They consist of a capsule that elongates into a long tube, which is coiled inside the capsule matrix and expelled during its nano-second discharge deployed for ...
Niharika Garg +12 more
doaj +2 more sources
Localization of Multiple Jellyfish Toxins Shows Specificity for Functionally Distinct Polyps and Nematocyst Types in a Colonial Hydrozoan [PDF]
Toxins, 2023 Hydractinia symbiolongicarpus is a colonial hydrozoan that displays a division of labor through morphologically distinct and functionally specialized polyp types.
Anna M. L. Klompen +2 more
doaj +2 more sources
The proteotranscriptomic characterization of venom in the white seafan Eunicella singularis elucidates the evolution of Octocorallia arsenal [PDF]
Open BiologyAll the members of the phylum Cnidaria are characterized by the production of venom in specialized structures, the nematocysts. Venom of jellyfish (Medusozoa) and sea anemones (Anthozoa) has been investigated since the 1970s, revealing a remarkable ...
Maria Vittoria Modica +9 more
doaj +2 more sources
Proteomic analysis of FACS-enriched whole nematocysts from the colonial hydrozoan Hydractinia symbiolongicarpus [PDF]
Toxicon: XCnidarians possess a cell-based venom system in the form of nematocytes or “stinging cells” that are found across various tissues. The scattered distribution of these venom-containing cells makes isolation difficult, particularly for proteomic studies ...
Anna M.L. Klompen +5 more
doaj +2 more sources