Figure 4. Phenotypic analysis of root hair development in lsf2-1 mutant and wild type plants under oxidative stress conditions.

Morphology of root hairs (a) of seedlings was grown under oxidative stress. Average number of root hairs per mm (b) and root hair length (c) were determined in seedlings which were grown on MS medium containing 10 μM SA, 0.1 mM H₂O₂, or 2 nM MV (n = 20; student’s t-test, **P < 0.01). (d) The relative expression of RHD6 under oxidative stress was detected by qPCR (n = 3; student’s t-test, **P < 0.01).