Table 1. Phenotype analysis of the wild type, ∆Fgmon1 and ∆Fgrab7 mutants, ∆Fgmon1/FgRAB7 Q67L and WT/FgRAB7 Q67L transformant in F. graminearum.
| Strain | Colony Diameter (cm)a |
Conidiation (x106/ml)b | Conidial Length (μm)c | Conidial Morphology (%)d |
DONe (mg mg-1ergosterol) | ||||
|---|---|---|---|---|---|---|---|---|---|
| CM | V8 | 5xYEG | MM | ≥3 Septa | ≤2 Septa | ||||
| PH-1 | 7.3 ± 0.1 | 5.8 ± 0.1 | 5.3 ± 0.1 | 5.1± 0.1 | 1.23 ± 0.16 | 47.77 ± 4.94 | 91.2 ± 2.2 | 8.8 ± 2.2 | 4.10 ±0.10 |
| ∆Fgmon1 | 2.5 ± 0.1* | 2.6 ± 0.1* | 2.5 ± 0.1* | 1.6 ± 0.1* | 0.21 ± 0.04* | 32.90 ± 3.96* | 45.8 ± 3.1* | 54.2 ± 3.1* | 0.016 ±0.001* |
| ∆Fgrab7 | 1.3 ± 0.1* | 2.1 ± 0.1* | 1.5 ± 0.1* | 0.8 ± 0.1* | 0.18 ± 0.03* | 28.82 ± 5.40* | 47.3 ± 2.8* | 52.7 ± 2.8* | 0.01±0.001* |
| ∆Fgmon1/FgMON1 | 7.2 ± 0.1 | 5.8 ± 0.1 | 5.4 ± 0.1 | 5.1 ± 0.1 | 1.18 ± 0.11 | 47.10 ± 5.82 | 89.0 ± 4.5 | 11.0 ± 4.5 | NA |
| ∆Fgrab7/FgRAB7 | 6.7 ± 0.1 | 5.6 ± 0.1 | 5.1 ± 0.1 | 4.7 ± 0.1 | 1.14 ± 0.17 | 47.36 ± 4.76 | 88.7 ± 2.7 | 11.3 ± 2.7 | NA |
| ∆Fgmon1/FgRAB7Q67L | NA | 5.2 ± 0.1 | NA | NA | 1.20 ± 0.09 | 47.11 ± 5.02 | 89.2 ± 3.2 | 10.8 ± 3.2 | NA |
| WT/FgRAB7Q67L | NA | 5.7 ± 0.1 | NA | NA | 1.21 ± 0.18 | 46.75 ± 5.36 | 88.3 ± 2.5 | 11.7 ± 2.5 | NA |
aColony diameter of the indicated strains on different media after 3 days incubation at 25 °C.
bQuantification of the conidial production of the indicated strains form CMC cultures.
cMeasurement of the conidial length of the indicated strains.
dPercentage of the abnormal conidia of the indicated strains.
ePercentage of DON production of each mutant in comparison with that of the wild-type. ±SD was calculated from three repeated experiments and asterisks indicate statistically significant differences (p < 0.01). NA, not assayed.