0 × 101 to SB203580 3.0 × 10−2 ng μL−1 of 15-ADON strain DNAs for Tox5-1/2 primer set). Values of the threshold cycles (Ct) were recorded and obtained by the opticon monitor™ software version 3.1 (Bio-Rad Laboratories). Standard curves for different primer sets were constructed by plotting the Ct value vs. the logarithm (log10) of the concentration of 10-fold serial-diluted

F. graminearum DNAs as described above. Amplifications with different primer sets on the genomic DNAs of two F. graminearum chemotypes were run in triplicate to obtain the mean and SD of each 10-fold serial dilution. Real-time PCR amplifications on total genomic DNA extracted from the sampling zones (as described above) were performed using MiniOpticon (Bio-Rad Laboratories). All real-time PCR reactions were performed utilizing

the real-time PCR MJ white tubes (Bio-Rad Laboratories) in a total volume of 25 μL. The reaction mixture for all real-time PCR assays were: 12.5 μL of IQ Supermix (Bio-Rad Laboratories), 1 μL of each 10 μM forward/reverse primers (Invitrogen), 9.5 μL of sterilized UltraPure Millipore water and 1 μL of DNA template. Real-time PCR conditions for the Fg16NF/R primer set used are outlined in Nicholson et al. (1998) with melting curve analysis at 60–95 °C. Parameters for the Tox5-1/2 primer set are as described Galunisertib nmr in Schnerr et al. (2001). Ascospore germination of S. mycoparasitica was not normally distributed. Therefore, differences between suspensions of six different Fusarium filtrates and water control were analyzed using the Kruskal–Wallis test (SPSS, 1990). Differences between linear mycelial growth

of F. graminearum (3- and 15-ADON) and controls, S. mycoparasitica coinoculated, and S. mycoparasitica preinoculated treatments for 5 days of incubation were analyzed using anova−least significant difference (SPSS, 1990). Differences between S. mycoparasitica-infected (penetrated) or -noninfected (nonpenetrated) F. graminearum (3- and 15-ADON) host cell diameters were analyzed utilizing the t-test (SPSS, 1990). For comparison between different F. graminearum DNA concentrations (with Tox5-1/2 or Fg16NF/R primer set) in different Sclareol treatments, the t-test was employed to analyze the differences between them. Log10 transformations were carried out whenever required to meet the anova requirements (Lehmann, 1975). Sphaerodes mycoparasitica spore germination suspended in both F. graminearum chemotype 3-ADON and 15-ADON filtrates was lower compared with F. avenaceum for the first incubation day, and compared with both F. avenaceum and F. oxysporum for the remaining incubation days (P=0.05; with Kruskal–Wallis test) (Fig. 1). No significant differences in germination of F. graminearum, F. proliferatum and F. sporotrichioides filtrate treatments were observed for the first two incubation days. However, treatments with F. graminearum filtrates showed significantly higher germination rate of S. mycoparasitica compared with F.