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Microtubule-based nucleation results in a large sensitivity to cell geometry of the plant cortical array

Fig 4

LDD microtubule-based nucleation increases the sensitivity of array orientation to cell geometry.

Fraction of aligned arrays at s (8 h, 20 min) with a transverse (T, histograms to the right or filled symbols; when ), or longitudinal (L, histograms to the left or empty symbols; when ) orientation out of n = 2000 independent runs each, with or without directional biases: (A,B) 8% increase in catastrophe rate at the cylinder caps for the global bias; and 8% increase in maximum rescue rate on the cylinder mantle according to Eq (12) for the local bias, and (C,D) for different values of the local bias in according to Eq (12); (C,D): in the left half of each panel, the local bias is implemented in the transverse direction, in the right half in the longitudinal direction. Note that, with these parameters, a bias of 0.04 in corresponds to a change of 0.01 in G in the same direction. The simulation domain is a cylinder of (A,C) m length and m diameter, and (B,D) m length and m diameter. (A,B) Error bars represent 95% confidence interval according to a binomial model (computed using the binom.test function in R statistical package version 3.6.3). (C,D) Error bars have been omitted because they are approximately the same size as the symbols. In these simulations, r_c = 0.00225 s⁻¹.

doi: https://doi.org/10.1371/journal.pcbi.1013282.g004