2.4. DNA extraction, amplification, and sequencing
Mushroom DNA was extracted from dried tissue using High Pure PCR Template preparation kit (Roche, Germany) according to the manufacturer’s instructions.
Following DNA extraction, the ITS region of the nuclear rDNA was amplified by polymerase chain reaction (PCR) using primers ITS1-F (5 CTTGGTCATTTAGAGGAAGTAA 3) and ITS4-R (5 CAGGAGACTTGTACACGGTCCAG 3).
The PCR conditions were as follows; initial denaturation at 94 C for 2 min followed by 30 cycles of denaturation (at 98 C for 10 s), annealing (at 55 C for 30 s) and an extension (at 72 C for 50 s).
These cycles were then followed by a final extension step at 72 C for 5 min.
The PCR product was purified with a High Pure PCR Purification Kit (Roche,Germany).
The purified products were sequenced with primers ITS1-F and ITS4-R at the RefGen (Ankara, Turkey).
A sequence analysis and a multiple sequence analysis were performed using the CLC-BIO main workbench.
A close sequence searching was performed using BLASTn at NCBI.