<i>ΔpdeH</i> mutants have a defect in cell-wall integrity.

<p>Growth of wild type and mutant strains on complete media (CM) without 1 M sorbitol (top); growth of strains on CM with 1 M sorbitol (middle); growth of strains on straw decoction and corn media (SDC) without sorbitol (bottom). The <i>ΔpdeH</i> and <i>ΔpdeH ΔpdeL</i> mutants undergo progressive autolysis on CM in the absence of osmotic stabilization. Radial growth rates are identical to those of the wild-type strains.</p>