Light-regulated collective contractility in a multicellular choanoflagellate
| Autor: | Kent L. McDonald, Thibaut Brunet, Mark J. A. Vermeij, Tess A. Linden, Ben T. Larson, Nicole King |
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| Přispěvatelé: | Freshwater and Marine Ecology (IBED, FNWI) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Light
Movement Cell Morphogenesis Protozoan Proteins Contractility 03 medical and health sciences 0302 clinical medicine medicine Animals Sensory Rhodopsins 10. No inequality Choanoflagellate Cyclic GMP Choanoflagellata 030304 developmental biology 0303 health sciences Multidisciplinary biology Microvilli Phosphoric Diester Hydrolases 030302 biochemistry & molecular biology Inversion (evolutionary biology) Biological evolution Actomyosin biology.organism_classification Biological Evolution Cell biology Multicellular organism medicine.anatomical_structure Evolutionary biology 030217 neurology & neurosurgery |
| Zdroj: | Science (New York, N.Y.), 366(6463), 326-334. American Association for the Advancement of Science |
| ISSN: | 0036-8075 |
| Popis: | Origins of collective contraction In contrast to plants and fungi, animals can deform their bodies by the collective activity of contractile cells. Collective contractility underlies processes such as gastrulation and muscle-based motility. Brunet et al. report that a close relative of animals, a choanoflagellate they name Choanoeca flexa , forms cup-shaped colonies that undergo collective contractility, leading to a rapid change in colony morphology (see the Perspective by Tomancak). C. flexa colonies are each composed of a monolayer of polarized cells. In response to sudden darkness, a light-sensing protein triggers coordinated, polarized contraction of C. flexa cells, which results in colony inversion. The cellular mechanisms underlying this process are conserved between C. flexa and animals, indicating that their last common ancestor was also capable of polarized cell contraction. Science , this issue p. 326 ; see also p. 300 |
| Databáze: | OpenAIRE |
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