Table 3. Phenotypes of the cap1 mutant in growth, conidiation, and plant infection.
| Strain | Growth rate (mm/day)a | Conidiation (×105 spores/plate) | Appressoria/germ tubeb (%) | Lesions/5 cm leaf tipc | Appressorium penetrationd (%) |
| Ku80 (wt) | 3.3±0.1 | 296.3±28.8 | 96.2±1.8 A* | 51.3±4.5 A | 68.4±5.4 A |
| HC83 (Δcap1) | 1.7±0.2 | 112.1±13.4 | 51.3±1.7 C | 9.4±2.1 D | 15.2±3.2 D |
| CH07 (Δcap1/CAP1) | 3.3±0.1 | 310.5±21.2 | 95.0±2.0 A | 47.3±5.2 A | 62.5±4.8 A |
| HC10 (CAP1 ΔAB) | 2.7±0.1 | 259.7±5.9 | 91.5±1.4 A | 31.5±1.3 B | 49.6±5.1 B |
| XY111 (CAP1 ΔACB) | 1.8±0.1 | 153.6±11.6 | 59.6±2.7 C | 11.5±2.9 D | NA |
| XY244 (CAP1 ΔP2) | 3.1±0.2 | 307.3±25.3 | 69.0±1.2 C | 17.3±4.3 C | 33.2±1.9 C |
a
Growth rate and conidiation were measured on complete medium (CM). Mean and standard deviation were calculated with results from three replicates.
b
Appressorium formation is expressed as the percentage of germ tubes producing appressorium.
c
Lesion formation was examined on infected rice leaves 7 days post-inoculation.
Means and SD values were calculated from at least three independent experiments.
d
Appressorium penetration was assayed on onion epidermis at 48 h after inoculation.
*
The same letter indicated there was no significant difference. Different letters were used to mark statistically significant differences (P = 0.05).