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The paper identifies cell position as the main factor determining cell identity in Ectocarpus filaments, with shape playing a secondary role.

The study defines PpROP functions in P. patens development through knock-out, complementation, and overexpression experiments, showing distinct total activity requirements for different processes.

The paper shows that actin filaments control alginate distribution in kelp embryos, forming a corset that restricts growth and establishes the apico-basal axis.

This study identifies a BAR-RhoGAP protein essential for tip growth in the brown alga Ectocarpus, functioning independently of F-actin organization.