Seventeen leaves used for the isolation described above were freeze-dried. Totalgenomic DNA was extracted using QIAGEN DNeasy Plant Mini Kit (Qiagen,Hilden, Germany) according to the manufacturer's instructions. A nested PCRapproach was used to amplify a region of ITS spanning from 18S to 5.8S rDNA.The first set of primers was NSA3 (50-AAACTCTGTCGTGCTGGGGATA-30)/NLC2(50-GAGCTGCATTCCCAAACAACTC-30) (Martin & Rygiewicz, 2005) and thesecond set was ITS1-F_KYO1 (50-CTHGGTCATTTAGAGGAASTAA-30)/ITS2 (50-GCTGCGTTCTTCATCGATGC-30) (White et al., 1990; Toju et al., 2012). Adapters wereadded to the 50 end of the primers ITS1-F_KYO1 and ITS2. PCR amplification cyclewith NSA3/NLC2 primers consisted of an initial denaturation step of 94 C for 5 min,followed by 35 cycles of 94 C for 30 s, 55 C for 30 s and 72 C for 30 s, and a final 5-minelongation step at 72 C.