Table 1. Single filament dynamics in wild-type treated with mock or 10 µm TIBA

Values given are the mean ± se, with n > 50 filaments from n > 10 root epidermal cells and at least 10 seedlings per treatment. Significantly different from mock control value by t test; **P < 0.01, ***P < 0.001. nd, Not significantly different from mock control value by t test; P > 0.05.

Stochastic Dynamics ParametersMockTIBA
Elongation rate (µm/s)1.5 ± 0.11.8 ± 0.1**
Max. filament length (µm)7.1 ± 0.39.6 ± 0.5***
Max. filament lifetime (s)14.7 ± 1.323.1 ± 1.7***
Severing frequency (breaks/µm/s; 10−2)3.1 ± 0.21.8 ± 0.2***
Regrowth frequency (%)2.4 ± 0.12.2 ± 1.1 (nd)
Annealing frequency (%)11.7 ± 3.916.4 ± 3.6 (nd)
Bundling frequency (events/µm2/filament/s; 10−6)6.1 ± 1.117.4 ± 2.3***
Debundling frequency (events/µm2/filament/s; 10−6)1.7 ± 0.62.3 ± 0.9 (nd)