miR172 levels are reduced in <i>spl</i> mutants.

<p>The abundance of (A) pri-miR172b, (B) miR172 and (C) <i>SPL3</i> and <i>SPL5</i> mRNA in the shoot apices of 16-day-old <i>spl</i> mutants. Values are the average of 3 biological replicates, ± SE.</p>