Overproliferation phenotypes of <i>pas2-1</i> mutants.

<p>(A) True leaf of a 2-wk-old <i>pas2-1</i> mutant seedling. (B) 5-d-old wild-type and <i>pas2-1</i> seedlings. (C) Cross sections of 5-d-old hypocotyls. (D) Transverse sections of shoot apices of 7-d-old seedlings. Bars, 1 mm (A), 500 µm (B), and 100 µm (C, D).