Table 1.

Dynamic Instability Properties of Cortical Microtubules during Interphase

Dynamic Instability ParametersMBD-DsRedYFP-TUA6
Growth rate (μm/min)5.60 ± 1.92 (64)6.15 ± 3.05 (23)
Shrinkage rate (μm/min)10.09 ± 3.52 (92)10.03 ± 3.11 (35)
frescue (events/min)3.26 ± 1.75 (61)2.99 ± 1.83 (12)
fcatastrophe (events/min)1.61 ± 1.40 (56)2.32 ± 1.51 (22)
Dynamicity (μm/min)6.91 ± 3.28 (114)6.98 ± 3.04 (51)
Growth time31%33%
Shrinkage time40%42%
Pause time29%25%
  • The data represent the average ± sd (n = microtubules) for the plus-ends of microtubules in either MBD-DsRed- or YFP-TUA6–expressing BY-2 cells. The dynamic instability parameters are statistically indistinguishable between the two cell lines (P-value > 0.05 using the t test). frescue, frequency of microtubule rescue events; fcatastrophe, frequency of microtubule catastrophe events.