SPIRAL2 Determines Plant Microtubule Organization by Modulating Microtubule Severing
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SPIRAL2 Determines Plant Microtubule Organization by Modulating Microtubule Severing
One of the defining characteristics of plant growth and morphology is the pivotal role of cell expansion. While the mechanical properties of the cell wall determine both the extent and direction of cell expansion, the cortical microtubule array plays a critical role in cell wall organization and, consequently, determining directional (anisotropic) cell expansion. The microtubule-severing enzyme...
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The noncentrosomal cortical microtubules (CMTs) of land plants form highly ordered parallel arrays that mediate cell morphogenesis by orienting cellulose deposition. Since new CMTs initiate from dispersed cortical sites at random orientations, parallel array organization is hypothesized to require selective pruning of CMTs that are not in the dominant orientation. Severing of CMTs at crossover ...
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ژورنال
عنوان ژورنال: Current Biology
سال: 2013
ISSN: 0960-9822
DOI: 10.1016/j.cub.2013.07.061