Figure 1
Assay of copper tolerance in yeast strains. Five μl of 1:10 serial dilutions were plated on minimal medium without or with 0.5 g · L-1 CuSO4 (a) or YPD medium containing 0-2.5 g · L-1 CuSO4 (b). Plates were incubated two days at 30°C. AL5 is the C. humilis strain; BL7, EL1 and GL6 are different S. cerevisiae strains.