s.l., small subunit (SSU) was
amplified, sequenced, and blasted using the Megablast algorithm against the entire
Fungi (taxid:4751) nucleotide collection (nr/nt) (blastn, NCBI). Genomic DNA
extraction was performed on flash frozen fungal mycelium mechanically disrupted
inside a frozen 2 mL eppendorf with two 5/32 inch metal balls (Wheels
Manufacturing Inc.) using a TissueLyser II (Qiagen) and a chilled adapter set
(Qiagen) at 24 freq/sec for 60 sec. DNA was taken up in 900 μL extraction buffer
(1% SDS, 155 mM 4-aminosalicyclic acid and 0.2 mL/mL 5× RNB (1.0 M Tris, 1.25 M
NaCl, 0.25 M EGTA, pH 8.5)), and 900 μL phenol:chloroform:isoamyl alcohol 25:24:1.
After centrifugation for 10 min. at 10.000 × g the water phase was taken up in 5
volumes PB buffer (Qiagen) and the DNA was purified using the columns, reagents
and protocol of the QIAquick PCR Purfication Kit (Qiagen). SSU was amplified with primers NS1 and NS4 [58 ] using Platinum Taq DNA polymerase
(Invitrogen), reaction conditions advised by the manufacturer of the enzyme, and
the cycler program described in [59 (link)].
The PCR product was sequenced by Macrogen (Maryland, USA) with the same primers
for initial amplification.