Table 1.
Pathogenicity properties of wild-type strains of Xanthomonas campestris pv. campestris and the Xcc 8004 strain-specific mutants tested on various host plants
|
|
Average virulence level (standard deviation)a |
||||||||
|---|---|---|---|---|---|---|---|---|---|
|
|
Cabbage
|
Radish (Huaye)
|
Radish (Xiaojingzhong)
|
Chinese cabbage
|
Pakchoi cabbage
|
||||
| Wild-type strains | |||||||||
| Xcc 8004 | 4 (0.00) | 4 (0.00) | 4 (0.00) | 4 (0.00) | 4 (0.00) | ||||
| Xcc ATCC 33913 | 0.67 (0.49)b | 0 (0.00) | 4 (0.00) | 3.7 (0.49)b | 4 (0.00) | ||||
| Xcc 8004 strain-specific segment mutants | |||||||||
| XC2055 | 1.9 (0.20)b | 4 (0.00) | 4 (0.00) | 1.9 (0.20)b | 2.9 (0.20)b | ||||
| XC2068 | 1.8 (0.39)b | 2.3 (0.65)b | 3.3 (0.87)b | 3.8 (0.62) | 3.8 (0.45) | ||||
| XC2416 | 2.0 (0.14)b | 0.3 (0.49)b | 3.8 (0.39) | 2.9 (0.52)b | 4 (0.00) | ||||
| Control
|
0
|
0
|
0
|
0
|
0
|
||||
-
↵a Virulence level scale and plant inoculation approach are described in Methods (Dow et al. 1990). Each average virulence level was calculated from a data set consisting of ≥36 inoculation sites distributed over ≥3 leaves on ≥6 individual plants. Symptoms were scored on the 10th day post-inoculation. Standard deviations are shown in the parentheses.
-
↵b P < 0.05 vs. Xcc 8004, by t-test.
