FIG 3.

The odc-elevated Congo red and biofilm phenotypes require the cel genes. (A) Congo red staining on ATGN-CR agar plates; (B) biofilm assays on coverslips (prepared as described in the legend to Fig. 2). Additional deletions in the cellulose biosynthesis genes (Cel⁻) or the UPP biosynthesis genes (UPP⁻) were introduced into the Δodc mutant to create Cel⁻ UPP⁺ and Cel⁺ UPP⁻ mutant derivatives. Error bars show the standard deviations from a minimum of three biological replicates. *, P < 0.08 compared to the wild type; **, P < 0.03 compared to the Δodc mutant.