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Table 3 Estimation and statistical significance of nestedness and modularity in the Pseudomonas syringae-plant symptomatology matrices

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

  1. aDisease scores, as described in the Methods section, were combined into two groups reflecting different thresholds for disease category “0” (no symptoms, no virulence) vs. disease category “1” (sensitive host, virulent pathogen). bValues of nestedness or modularity for the actual pathogenicity matrix. Estimated values were rescaled in order that minimum and maximum were 0 and 100, respectively. Statistical significance is indicated between parentheses as the numbers of simulations (over 1000 for nestedness and over 100 for modularity) under the probabilistic degree (first figure) and Bernoulli (second figure) null models showing higher values than the actual pathogenicity matrix. All tests for nestedness were significant under the Bernoulli null model and in all but one case for the probabilistic degree model. Only one test out of 40 showed significant modularity. In some cases (indicated NA) the algorithm was not applicable to calculating modularity because the level of modularity was too low. cProbabilities highlighted in black indicate tests that are significant at P < 0.05