X. , Percentage value is indicated in brackets only for spacers for which the percentage identity is less than 100%

, Abbreviations ABC: ATP-binding cassette; BLAST: Basic Local Alignment Search Tool

, CRISPRs: Clustered Regularly Interspaced Short Palindromic Repeats systems; CU: Chaperone-Usher; DSF: Diffusible Signal Factor; Hrp: Hypersensitive Response and Pathogenicity; IS: Insertion Sequence; LPS: Lipopolysaccharides; MCP: Methyl-accepting Chemotaxis Proteins; MDR: Multidrug resistance; MLSA: Multilocus sequence analysis, CBD: Cellulose Binding Domain

, NRPS: Nonribosomal peptide synthetases; PAMP: Pathogen-Associated Molecular Pattern, NCBI: National Center for Biotechnology Information

, PFGE: Pulsed-Field Gel Electrophoresis; PSL: Polyserine linker

. Rhs, Recombination hot spot; rpf: Regulation of pathogenicity factors; SPI- 1: Salmonella Pathogenicity Island-1; SSH: Suppression Subtractive Hybridization; T1SS: Type I Secretion System; T2SS: Type II Secretion System

, T4SS: Type IV Secretion System; T5SS: Type V Secretion System; T6SS: Type VI Secretion System; TBDT: TonB-Dependent Transporters; TCSTS: Two-Component Signal Transduction Systems, T3SS: Type III Secretion System TPS: Two- Partner System

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