Patterning and Lifetime of Plasma Membrane-Localized Cellulose Synthase Is Dependent on Actin Organization in Arabidopsis Interphase Cells
Arun Sampathkumar, Ryan Gutierrez, Heather E McFarlane, Martin Bringmann, Jelmer Lindeboom, Anne-Mie Emons, Lacey Samuels, Tijs Ketelaar, David W Ehrhardt, Staffan Persson
PLANT PHYSIOLOGY | AMER SOC PLANT BIOLOGISTS | Published : 2013
The actin and microtubule cytoskeletons regulate cell shape across phyla, from bacteria to metazoans. In organisms with cell walls, the wall acts as a primary constraint of shape, and generation of specific cell shape depends on cytoskeletal organization for wall deposition and/or cell expansion. In higher plants, cortical microtubules help to organize cell wall construction by positioning the delivery of cellulose synthase (CesA) complexes and guiding their trajectories to orient newly synthesized cellulose microfibrils. The actin cytoskeleton is required for normal distribution of CesAs to the plasma membrane, but more specific roles for actin in cell wall assembly and organization remain ..View full abstract
This work was supported by the Max Planck Society (to A. S., M. B., and S. P.) and a Canadian Natural Sciences and Engineering Research Council Discovery Grant (to H.M. and L.S.).