FIG 7.

Switchgrass solubilization by mixed cultures of GDL knockout strains. Biotic solubilization values on switchgrass were determined for GDL knockout strains (RKCB120, RKCB121, RKCB127, and RKCB130) alone and combined in mixed cultures inoculated with equal proportions of two strains. Data for three replicates of C. bescii containing the full GDL (C. bescii wild type and C. bescii strain JWCB005) are shown at the left for comparison. The genes contained in each strain are marked in the table (×). Genes marked “××” for a mixed culture represent enzymes produced by each of the two strains in the mixture. Error bars represent standard deviations (n = 3).