Table 3.
Comparison of pathogenicity symptoms induced by wild‐type and IAA mutant strains.
| Inoculum | Inoculated plants (n) | Symptoms (percentage of inoculated plants)* | ||||
|---|---|---|---|---|---|---|
| chl | nod | leaf | stem | total | ||
| Series 1 (9 dpi)† | ||||||
| FB1 × FB2 | 105 | 89/85 | 7/7 | 25/24 | 25/24 | 57/54 |
| BH7 × BH13 | 107 | 86/80 | 3/3 | 31/29 | 17/16 | 51/48 |
| Series 2 (10 dpi)† | ||||||
| FB1 × FB2 | 58 | 56/97 | 3/5 | 18/31 | 24/41 | 45/78 |
| GRN7 × GRN8 | 66 | 64/97 | 3/5 | 25/38 | 21/32 | 49/74 |
| GRN7Δtam1 × GRN8Δtam1 (#1)‡ | 62 | 60/97 | 3/5 | 22/35 | 13/21 | 38/61 |
| GRN7Δtam1 × GRN8Δtam1 (#2)‡ | 54 | 54/100 | 3/6 | 18/33 | 16/30 | 37/69 |
| Series 3 (6 dpi)† | ||||||
| FB1 × FB2 | 36 | 35/97 | 0/0 | 9/25 | 22/61 | 31/86 |
| GRN7Δtam1 × GRN8Δtam1 | 27 | 26/96 | 0/0 | 10/37 | 14/52 | 24/89 |
| GRN7Δtam1Δtam2 × GRN8Δtam1Δtam2 (#1)‡ | 33 | 33/100 | 2/6 | 6/18 | 24/73 | 32/97 |
| GRN7Δtam1Δtam2 × GRN8Δtam1Δtam2 (#2)‡ | 29 | 29/100 | 1/3 | 3/10 | 22/76 | 26/90 |
(*)
Symptoms of infected plants: chl, chlorosis only; nod, number of plants with tumours exclusively on nodal shoots; leaf, number of plants with leaf tumours (excluding stem tumours); stem, number of plants with stem tumours .
(†)
Time point (days post inoculation, dpi) of plant inspection (†).
(‡)
Independent combinations of mutant strains . Plants from Series 1 and 3 were used for IAA analysis (see Fig. 6).