Cloning and expression of a wild eggplant cytochrome P450 gene, StoCYP77A2, involved in plant resistance to Verticillium dahliae
Differentially expressed genes in eggplant (Solanum torvum SW) during root infection with Verticillium dahliae were identified using cDNA-amplified restriction fragment polymorphism (cDNA-AFLP) approach. A total of 140 differential transcript-derived fragments (TDFs) were isolated, in which 79 TDFs were up-regulated, and 34 TDFs were down-regulated after inoculation. BLAST analysis showed that 51% of these TDFs belonged to function-known genes. Further analysis on six TDFs (TDF11, TDF14, TDF16, TDF25, TDF26, and TDF39), which represented different expression patterns, was done. TDF11, encoding cytochrome c oxidase, appeared in 24 h after inoculation; TDF14, encoding retrotransposon protein, disappeared in 6 h after treatment; TDF16, encoding bZIP transcription factor, began to express only in 72 h after inoculation; TDF25, encoding senescence-associated protein, was present between 6 and 24 h; TDF26, encoding cytochrome P450 monooxygenase, and TDF39, encoding metallophosphoesterase, were up-regulated during the entire period after inoculation. Results obtained demonstrated that the defense of S. torvum against V. dahliae is a complex multigene process, which studying is helpful for better understanding verticillium wilt resistance of S. torvum.