Fig 3. Light dependence of lesion initiation.
a No lesion spots were observed in the middle segment of the leaves in the lm3 mutant, which was hidden from the light. b Effect of light intensity on lesion formation. Fewer lesion spots were observed under the treatment with 100 μmol m−2 s−1 (μE) compared with 200 μE in the lm3 mutant. c Effect of photoperiod on lesion formation. Several larger lesion spots were observed on the lm3 leaves after a longer day-length treatment. Two representative leaves are shown for each treatment, and the samples on the right are shown as the wildtype plant (3–1) in each panel.