A Plausible Microtubule-Based Mechanism for Cell Division Orientation in Plant Embryogenesis.

摘要: Summary Oriented cell divisions are significant in plant morphogenesis because cells embedded walls and cannot relocate. Cell follow various regular orientations, but the underlying mechanisms have not been clarified. We propose that cell-shape-dependent self-organization of cortical microtubule arrays is able to provide a mechanism for determining planes early tissue-generating may form basis robust control division orientation embryo. To show this, we simulate microtubules on actual surface shapes, from which derive minimal set three rules proper array orientation. The first rule captures effects shape alone organization, second describes regulation stability at edges, third includes differential effect of auxin local stability. These generate embryonic plane orientations potentially offer framework understanding patterned morphogenesis.