Survival of the aligned

Ordering of the plant cortical microtubule array

Journal article (2010)

Authors

Simon H. Tindemans Institute for Atomic and Molecular Physics
Rhoda J. Hawkins Institute for Atomic and Molecular Physics
Bela M. Mulder Institute for Atomic and Molecular Physics
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Published Date

05-02-2010

Language

English

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Abstract

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 we 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.