A unique lipid signature guides cytokinesis in plant cells

Publication of the RDP in the journal Science Advances, on July 19, 2023. Communication of CNRS-INSB on August 28, 2023. Cytokinesis in multicellular organisms dictates how cells are organized in a tissue, their identities and functions. A study conducted by the Plant Reproduction and Development Laboratory (RDP - CNRS/ENS de Lyon/Inrae) and published in Science Advances , presents a quantitative analysis of cytokinesis steps in the model plant Arabidopsis using high-resolution microscopy approaches. This work describes the molecular mechanism by which the lipid signature at the membrane acts as a signal for the recruitment of the microtubule cytoskeleton during cell division in plants. Plant cytokinesis, which fundamentally differs from that in animals, requires the outward expansion of a plasma membrane precursor named the cell plate. How the transition from a cell plate to a plasma membrane occurs remains poorly understood.
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