Molecular and cellular dynamics of early embryonic cell divisions in Volvox carteri

von der Heyde EL, Hallmann A (2022)
Plant Cell.

Zeitschriftenaufsatz | E-Veröff. vor dem Druck | Englisch
 
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Abstract / Bemerkung
Cell division is fundamental to all organisms, and the green alga used here exhibits both key animal and plant functions. Specifically, we analyzed the molecular and cellular dynamics of early embryonic divisions of the multicellular green alga Volvox carteri (Chlamydomonadales). Relevant proteins related to mitosis and cytokinesis were identified in silico, the corresponding genes were cloned, fused to yfp, and stably expressed in Volvox, and the tagged proteins were studied by live-cell imaging. We reveal rearrangements of the microtubule cytoskeleton during centrosome separation, spindle formation, establishment of the phycoplast and generation of previously unknown structures. The centrosomes participate in initiation of spindle formation and determination of spindle orientation. Although the nuclear envelope does not break down during early mitosis, intermixing of cytoplasm and nucleoplasm results in loss of nuclear identity. Finally, we present a model for mitosis in Volvox. Our study reveals enormous dynamics, clarifies spatio-temporal relationships of subcellular structures and provides insight into the evolution of cell division. © The Author(s) 2022. Published by Oxford University Press on behalf of American Society of Plant Biologists.
Erscheinungsjahr
2022
Zeitschriftentitel
Plant Cell
ISSN
1532-298X
Page URI
https://pub.uni-bielefeld.de/record/2960624

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von der Heyde EL, Hallmann A. Molecular and cellular dynamics of early embryonic cell divisions in Volvox carteri. Plant Cell. 2022.
von der Heyde, E. L., & Hallmann, A. (2022). Molecular and cellular dynamics of early embryonic cell divisions in Volvox carteri. Plant Cell. https://doi.org/10.1093/plcell/koac004
von der Heyde, E. L., and Hallmann, A. (2022). Molecular and cellular dynamics of early embryonic cell divisions in Volvox carteri. Plant Cell.
von der Heyde, E.L., & Hallmann, A., 2022. Molecular and cellular dynamics of early embryonic cell divisions in Volvox carteri. Plant Cell.
E.L. von der Heyde and A. Hallmann, “Molecular and cellular dynamics of early embryonic cell divisions in Volvox carteri”, Plant Cell, 2022.
von der Heyde, E.L., Hallmann, A.: Molecular and cellular dynamics of early embryonic cell divisions in Volvox carteri. Plant Cell. (2022).
von der Heyde, Eva Laura, and Hallmann, Armin. “Molecular and cellular dynamics of early embryonic cell divisions in Volvox carteri”. Plant Cell (2022).
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