Figure 4.

rack1b-2 and rack1c-1 mutations enhance the root phenotype of rack1a mutants. (A) The length of primary root of rack1 mutants. (B) The number of lateral roots of rack1 mutants. The length of primary root and the number of lateral roots were measured from 10 d-old, light-grown seedlings (under 14/10 h photoperiod). Shown are the averages of at least 15 seedlings ± S.E. *, significant difference from Col, P < 0.05. #, significant difference from rack1a single mutant, P < 0.05. **, significant difference from rack1a-1 rack1b-2 double mutant, P < 0.05.