DNA extraction and PCR conditions
Yeast cells were pregrown in YPG, pH 5Æ6 at 28C for
48 h. The yeast DNA was extracted from the pure cultures
according to the method described by Duarte et al.
(2009). The 25 ll PCR mixture contained 12Æ5 ll de Mix
GoTaq Green Master 2X (Promega), 2 ll of DNA
diluted to 10 ng ll)1 and 0Æ5 lmol l)1 of each primer.
The sequences of the primers utilized in this study and
the amplification conditions are shown in Table 2. Amplification
products were separated by electrophoresis on a
0Æ8% (w ⁄ v) agarose gel and stained with Syber Green (Invitrogen,
USA). DNA fragments were visualized by UV
transillumination, and images were captured using a
Polaroid camera. A ladder marker (GeneRuler 100 bp
DNA Ladder Plus) was used as a size reference