Fig. 8From: Inhibition of cell expansion enhances cortical microtubule stability in the root apex of Arabidopsis thaliana DCB treatment increases microtubule resistance to oryzalin. Effects of combined treatment with DCB and oryzalin on wild-type roots. a, b Effect of 6 h treatment with 200 nM oryzalin on meristematic zone cells without a or after b 400 nM DCB treatment. Disordered phragmoplasts and incomplete cell walls can be observed in both cases (a, b). c Oryzalin-affected transition/fast elongation zone cells exhibit disrupted and depolymerized cortical microtubules. d Roots of seedlings transplanted for 28 h in medium with 400 nM DCB exhibit short cells with unaffected cortical microtubules. e In roots treated for 6 h with 400 nM DCB and 200 nM oryzalin, after been transplanted for 22 h in medium containing 400 nM DCB, cortical microtubules appear unaffected by oryzalin in the transition and fast elongation zone (e compare to d). Scale bars: 20 μmBack to article page