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The mutant hmr exhibits increased UV sensitivity. (a) Hypocotyl and root growth in dark-incubated seedlings analyzed 3 days after UV treatment, expressed as relative to the untreated controls (n = 20). (b) Root growth in light- and dark-incubated seedlings analyzed 2 days after UV treatment, expressed as relative to the untreated controls (n = 20). The values are means ± SE, * = p < 0.05 for the mutant versus Col-0 wild type in the same conditions.
