1. Genomics of crucifers' host-pathosystem - Prologue -- 2. Crucifers' pathogens genome -- 3. Genomics of host- pathogen interaction -- 4. Molecular detection and Identification of pathogens, pathotypes and genes -- 5. Pathogenomics of pathogenic variability -- 6. Bio-metabolomics of crucifer's host-pathosystem -- 7. Genomics of crucifer's host-pathosystem at a glance -- 8. Protocols to study host-pathosystem -- 9. Future research priorities of crucifers' host pathosystem -- 10. Subject index.