Volvox as a Model for Studying Cell Death and Senescence
2021
The spherical green alga Volvox consists of several hundred or thousand of somatic cells that undergo terminal differentiation, senescence and death, and a small number of gonidia (asexual reproductive cells) that give rise to the next generation. In the first part of this paper, the ontogenetic diversity of the genus Volvox is briefly considered, as well as the mechanisms of differentiation into the two types of cells mentioned above, which have been thoroughly studied during recent years in Volvox carteri. Then, a detailed critical analysis of the literature and some of my own data on senescence and cell death (mainly in V. carteri and, to a lesser extent, in V. aureus) was carried out, and it was noted that this aspect of Volvox developmental biology has not been sufficiently studied. Some perspectives of further research of the processes of cell death and senescence in representatives of the genus Volvox in a comparative aspect are indicated.
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