Our previous work indicated that CaWRKY40 mRNA transcript can be induced by pathogen affection and high temperature shock and take vital role in plant's resistance to pathogen and tolerance to high temperature. However, the mechanism of CaWRKY40 regulated by upstream transcription factor is still unclear. For this study, the promoter region of CaWRKY40p(W40p) associated with pathogen and heat shock was used as bait in the yeast one hybrid system to isolate the underlying regulated factor from the pepper cDN...