Fig. 3.
Relationship between the root slanting angles and pitch angles of cortical microtubules. Roots that grew toward the right side of the hard-agar plate were assigned the plus sign, whereas roots that grew in the opposite direction had the minus sign in the root-slanting angles. The right-handed helices of cortical microtubules were assigned the plus sign, whereas the left-handed helices had the minus sign. The wild type and all tubulin mutants had the Col background. 1, tub4S351F; 2, tub4T178I; 3, tua2T349I; 4, tua3D205N; 5, tua4S178Δ; 6, tua3R390W; 7, tub4L250F; 8, tub4E288K; 9, tua4R2K; 10, tub4P220S; 11, tub3P287L; 12, tub2P287L; 13, tua6T56I; 14, tua2E284K; 15, tua6M268I; 16, tua6S277F; 17, tua6V62I; 18, tua5D251N; 19, tub1S96F; 20, tua4T56I; 21, tub4G96D; 22, tua4S277F; 23, tua6P325S; and 24, tua6A281T.