Fig. 4
Spot assay of various strains on YPD plates containing no or various inhibitors. a No inhibitor, b mixed inhibitors, c acetic sodium, d furfurals, and e phenols. Two lines of each strain were determined. The concentrations of spotted cells were 6 × 10–1, 6 × 10–2, 6 × 10–3, and 6 × 10–4 (OD600), respectively