Fig. 9

Fluorescence intensity measurements of cortical microtubules of wild-type roots. Prior to 200 nM oryzalin treatment for 6 h, seedlings were transplanted to media containing either 400 nM DCB for 28 h or 10 mg L^− 1 Congo red for 22 h. Oryzalin-treated seedlings showed the lowest fluorescence intensity. The fluorescence intensity difference was statistically significant for DCB, Congo red and combined treatment of Congo red and oryzalin, compared to the control (p < 0.0001, n = 10). No statistical significance was observed for intensity fluorescence when oryzalin-treated and combined oryzalin- and DCB-treated roots were compared (p = 0.6835, n = 10). Error bars indicate standard error