Comparative Transcriptome Analysis Reveals Potential Genes Conferring Resistance or Susceptibility to Bacterial Canker in Tomato

Bacterial canker of tomato is a systemic disease caused by Clavibacter michiganensis (Cm), which poses grave threat to production worldwide. Towards the identification genes underlying resistance Cm infection, transcriptome resistant inbred backcross line IBL2353 carrying Rcm2.0 locus derived from Solanum habrochaites LA407 and susceptible lycopersicum Ohio88119 was comparatively analyzed after inoculation, analysis focused on with different expression patterns between lines. Gene ontology (GO) revealed that top terms differentially expressed comprised ubiquitin protein ligases, transcription factors, receptor kinases. Then we screened out some are potentially associated defense response against infection in including wall-associated kinase-like 20 (WAKL20), virus-induced gene silencing showed it contributes infection. In addition Cm-induced related resistance, eight homologs six susceptibility (S) families analyzed. These putative valuable resources for molecular breeding contribute development new control methods tomato.