Actin dynamics in plant cells: a team effort from multiple proteins orchestrates this very fast-paced game

摘要: Gazing at a giant redwood tree in the Pacific Northwest, that has grown to enormous heights over centuries, does little convince one plants are built for speed and versatility. Even cellular level, system of polymers — the cell skeleton or cytoskeleton — integrates signals generates subcellular structures spanning scales few nanometers hundreds micrometers coordinate growth. The term cytoskeleton itself connotes stable structure. Clearly, this is not case. Recent studies using advanced imaging modalities reveal plant actin be highly dynamic, ever changing assemblage polymers. These insights along with growing evidence about biochemical/biophysical properties cytoskeletal polymers, especially those obtained by single filament reconstituted systems purified proteins analyzed total internal reflection fluorescence microscopy, allow generation unique model dynamic turnover filaments, termed stochastic dynamics. Here, we review several significant advances highlight opportunities will position vanguard research on organization turnover. A challenge future apply power reverse-genetics organisms test molecular details new model.