Survival of the aligned: ordering of the plant cortical microtubule array

Details Survival of the aligned: ordering of the plant cortical microtubule array Survival of the aligned: ordering of the plant cortical microtubule array

2009-06-17

arxiv.org/abs/0906.3178v2

Phys. Rev. Lett. 104, 058103 (2010)

Biology

Quantitative Biology

Subcellular Processes

4+ pages, 3 figures v2: significantly revised the exposition of the analytical model and expanded the discussion on our choice

Scientific paper

10.1103/PhysRevLett.104.058103

The cortical array is a structure consisting of highly aligned microtubules which plays a crucial role in the characteristic uniaxial expansion of all growing plant cells. Recent experiments have shown polymerization-driven collisions between the membrane-bound cortical microtubules, suggesting a possible mechanism for their alignment. We present both a coarse-grained theoretical model and stochastic particle-based simulations of this mechanism, and compare the results from these complementary approaches. Our results indicate that collisions that induce depolymerization are sufficient to generate the alignment of microtubules in the cortical array.

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