Figure 1. Lateral root and root hair phenotype of wild-type (WT) and nal2/3 plants with exogenous auxin treatment. Surface-sterilized rice seeds were germinated and grown on Murashige and Skoog (MS) agar medium for 1 or 2 d. Then, germinated seeds were transferred to MS agar plates containing 0.1 μM IAA (+IAA), or to control plates (-IAA) and grown vertically in the growth chamber. Two-week-old plants were observed. (A-H) Lateral roots and root hair phenotypes of WT and nal2/3 seedlings grown on +IAA (A-D) or -IAA (E-H) agar plates. White asterisks indicate emerging lateral roots. LR, lateral root; PR, primary root; RH, root hair. Bars = 2 mm in (A-D) and 0.3 mm in (E-H).