Characterization of defense responses of susceptible and resistant tomato genotypes against bacterial wilt caused by Ralstonia solanacearum a proteomic approach Bacterial wilt of tomato proteomics and mass spectrometry Ralstonia solanacearum secretory protein stem cell wall and xylem sap proteome. Bakterielle Welke von Tomaten Proteome und die Massenspektrometrie sekretorische Proteine Stängel Zellwand und Xylemsaft Proteome