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Table 1 Variability in the response of plants to inoculation with strains of Pseudomonas syringae for each of the four tests and for woody and herbaceous plants

From: The overlapping continuum of host range among strains in the Pseudomonas syringae complex

Test A-1998 B-2003 C-2013 C-2013 C-2013 D-2017
Type of plants Herbaceous annual Herbaceous annual Herbaceous annual Woody perennial (external symptoms) Woody perennial (internal symptoms) Herbaceous annual
No. of bacterial strains 45 44 38 38 38 20
No. of plant species tested 18 16 12 10 10 16
No. of combinations inoculated (bacterial stains x plant species) 810 704 456 380 380 320
No. of combinations with symptomsa on at least 1 replicate plant 539 335 179 126 246 255
 % of the total combinations 66.5 47.6 39.3 33.2 64.7 79.7
No. of combinations with symptoms on ≥ half of the replicate plants 336 170 169 105 181 217
 % of the combinations with symptoms on at least 1 plant 62.3 50.7 94.4 83.3 73.6 85.1
No. of combinations with symptoms in both blocks 258.0 129.0 nd nd nd nd
 % of the combinations with symptoms on ≥ half of the plants 76.8 75.9 nd nd nd nd
No. of combinations with symptoms on > 2/3 of the replicate plants 224 112 151 87 135 189
 % of the combinations with symptoms on at least 1 plant 41.6 33.4 84.4 69.0 54.9 74.1
No. of combinations with symptoms on ≥1 but < half of the replicate plants 203 165 10 21 65 38
 % of the combinations with symptoms on at least 1 plant 37.7 49.3 5.6 16.7 26.4 14.9
  1. aFor tests A and B, plants with scores ≥2 were considered to have symptoms. For test C, herbaceous plants were considered to have symptoms if scores were ≥ 2 and woody plants were considered to have symptoms if lesion length was > 0.1 cm for external symptoms and > 0.3 for internal symptoms. For test D, plants were considered to have symptoms if scores were > 2. ‘nd’ indicates missing data
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