Fig. 5. Intracellular localization of AN and comparison of the microtubule organization. (A) Intracellular localization of GFP–AN in onion cells. Microtubule organization in trichomes using the GL2–GFP4–MAP4 line. (B and D) Wild type. (C and E) an mutant. (B and C) An incipient trichome shortly after growing out of the leaf surface. While wild-type trichomes show a denser network in the tip region, an mutants show an even distribution. (D and E) An elongated young trichome before branch initiation. Note that only the wild type has a denser microtubule network in the tip region.