Table 6. Mutation and deduced amino acid substitution in the partial sequence of the β-tubulin gene at codons 198 and 200 in isolates of CGSC with different responses to benzimidazole fungicides benomyl, carbendazim, and thiabendazole.
| CGSC isolate | EC50 (µg a.i./mL) value of benzimidazole | Sequence in codon (amino acid) | |||
|---|---|---|---|---|---|
| Benomyl | Carbendazim | Thiabendazole | 198 | 200 | |
| MLDH63 | >500 | >500 | >500 | GCG (Ala) | TTC (Phe) |
| MLDH68 | >500 | >500 | >500 | GCG (Ala) | TTC (Phe) |
| MLTA183 | >500 | >500 | >500 | GCG (Ala) | TTC (Phe) |
| HCKS11 | >500 | >500 | 354.8±8.7 | GCG (Ala) | TTC (Phe) |
| MLDH62 | 183.5±7.9b) | >500 | 410.6±11.6 | GCG (Ala) | TTC (Phe) |
| HCKS15 | 397.2±5.4 | 459.5±11.9 | 395.5±9.9 | GCG (Ala) | TTC (Phe) |
| NTGS35 | 492.3±1.1 | 472.1±6.1 | 246.1±13.3 | GCG (Ala) | TTC (Phe) |
| MLDH92a) | 379.4±1.2 | 332.9±2.5 | 186.9±5.9 | GCG (Ala) | TTC (Phe) |
| MLST125a) | 219.1±5.3 | 286.2±2.5 | 257.7±3.4 | GCG (Ala) | TTC (Phe) |
| HCKS12a) | 253.4±1.9 | 228.3±2.9 | 225.7±5.7 | GCG (Ala) | TTC (Phe) |
| NTGS123 | 43.5±1.1 | 61.4±1.6 | 46.1±0.8 | GAG (Glu) | TTC (Phe) |
| MLDH67 | 7.9±0.2 | 36.8±0.5 | 61.4±1.9 | GAG (Glu) | TTC (Phe) |
| MLGG169 | 5.4±0.3 | 9.2±0.7 | 6.2±0.2 | GAG (Glu) | TTC (Phe) |
| TPNH11 | 62.5±0.8 | 63.2±1.4 | 8.5±0.5 | GAG (Glu) | TTC (Phe) |
| TCHU03 | 2.2±0.3 | 1.5±0.2 | 4.2±0.2 | GAG (Glu) | TTC (Phe) |
a) C. fructicola. b) Mean±standard error (n=4).