Growth of wild type (WT), Klzwf1Δ mutant (Δ), and Klzwf1Δ mutant complemented with the KlZWF1 gene (Δ + ZWF1) on different carbon sources. Plates contained synthetic medium with 2% glucose (SD), 2% glycerol (SG), 2% lactate (SL), 2% ethanol (SE), 1% acetate (SAc), or 1% succinate (SSuc). Each spot was 5 μl of a 10-fold cell suspension dilution series. The initial cell concentration was about 1 × 107 ml−1.