Analysis of nestedness and modularity of the bacterial growth inhibition network combining 44 strains of the P. syringae species complex and 23 phages. Null models are described in Moury et al. [30]. For

each null model and each algorithm, the frequency of simulations, among 100, showing a strictly higher nestedness (or modularity) score than that of the actual matrix is indicated. Significantly nested or modular networks (p ≤ 0.05) are indicated in red.