Figure 7.

Root Development in L. japonicus Wild-Type Gifu, nap1-1, pir1-1, and pir1-1 nap1-1 Mutants.

(A) Light microscopy images of root segments (root tip toward bottom) showing diminished root hair development in the mutant plants compared with the wild-type control. The depicted differences in root hair density between individual mutant lines reflect the range of variation observed independently in each mutant genetic background tested.

(B) Root length of 7-d-old seedlings, showing significantly (*P < 0.05 in a t test) reduced elongation of the mutant roots. Mean values ± 95% confidence intervals are given for each genotype (n = 20).