Epithelial folding in the morphogenesis of the colonial marine hydrozoan, Dynamena pumila

Kupaeva, D.M.; Vetrova, A.A.; Kraus, Y.A.; Kremnyov, S.V.

Авторы: Kupaeva Daria M., Vetrova Alexandra A., Kraus Yulia A., Kremnyov Stanislav V.
Журнал: BioSystems
Том: 173
Год издания: 2018
Издательство: Elsevier BV
Местоположение издательства: Netherlands
Первая страница: 157
Последняя страница: 164
DOI: 10.1016/j.biosystems.2018.09.008
Аннотация: Epithelial folding (EF) is a fundamental morphogenetic process that can be observed in the development of many organisms ranging from metazoans to green algae. Being early branching metazoans, cnidarians represent the best models to study evolutionarily conserved morphogenetic processes, including EF. Hydrozoa is the most evolutionary advanced group of the phylum Cnidaria. All colonial hydrozoans grow continuously, changing the shape of their colonies and spreading over the substrate with the help of elongating stolons. Owing to high diversity of colony architecture, they are ideal objects for comparative and evolutionary morphology. In the hydrozoan Dynamena pumila, the growth of the colony proceeds via a variety of morphogenetic processes. Our work is focused on the formation of the anchoring disk of the stolon, which is accompanied by inward-folding morphogenesis of the ectodermal layer. Successive stages of anchoring disk development were described with light, confocal transmission electron microscopy. We have shown that EF in Dynamena is associated with accumulation of F-actin in the constricting apical domains of forming bottle cells located at the bottom of the emerging fold. In addition, the nuclei of these cells are displaced to the basal domains. Taken together, these features may indicate that EF in Dynamena proceeds as an active invagination, although this process has never been described in the development of hydrozoans. Apparently, development of the anchoring disk can be viewed as a reliable and versatile model system for studying the cell-shape-change-driven epithelial sheet morphogenesis, which can be easily observed and analysed.
Добавил в систему: Кремнёв Станислав Валерьевич

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Epithelial folding in the morphogenesis of the colonial marine hydrozoan, Dynamena pumilaстатья Исследовательская статья

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