Figure 1From: The bHLH transcription factor SPATULA regulates root growth by controlling the size of the root meristemspt mutants have larger RAMs than wild type. (A) Micrographs of 5 DAG roots. Arrowheads indicate the zone of cell division. (B) RAM size expressed as number of cells in the cortex. (C) Length of the RAM. Values are means (n = 15) ± standard error. Asterisks indicate values significantly different from wild type at P < 0.05. Scale bars indicate 100 μm.Back to article page