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Table 4 The number of strains of Pseudomonas syringae in phylogroup 2 and for all phylogroups considered together according to their host range extent and capacity to swarm on semi-solid nutrient medium. In both cases, there is a significant interaction of host range extent and swarming (Fisher’s exact test, P < 0.01). There were not sufficient strains to test the interaction of swarming and host range for phylogroups other than PG02

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

PG02 Swarming at 27 h No swarming at 48 h
 Extent of host range > 60% 10 4
 Extent of host range < 25% 1 8
All phylogroups
 Extent of host range > 60% 12 4
 Extent of host range < 25% 4 15