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Fig. 2. The effect of hst on seedling morphology. (A) Three-day-old
wild-type (left) and hst-1 (right) seedlings grown in the dark. (B)
Seven-day-old wild-type (left) and hst-1 (right) seedlings grown in
the light. (C-E) Anatomy of 3-day-old wild-type seedlings. (F-H) Anatomy of
3-day-old hst-1 seedlings. (C,F) Median longitudinal section of the
shoot apex; the meristem is marked with an asterisk. (D,G) Cross-section of
the hypocotyl. (E,H) Cross-section of the root. (I) Length of the hypocotyl
and root in dark- and light-grown seedlings. Black, wild-type hypocotyl;
white, wild-type root; white hatching on black, hst-1 hypocotyl;
black hatching on white, hst-1 root. Scale bars: 50 µm.
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