Expression patterns of five candidate defense-related genes among different genotypes and tissues
Patterns of gene expression can provide important clues to the analysis of involvement of defense-related genes in defense processes because it is believed that genes that share the same expression pattern are likely to be connected with regard to their functions. Moreover, comparing the expression patterns of the five genes encoding CsLecRK6.1 ,CsWRKY20 , PR3 , PR1-1a and LOX1 in root collars and leaves of four cucumber genotypes with different degrees of resistance in response to P. melonis , helps in the analysis of the differences and commonalities between these two tissues in response to damping-off. The results are shown as fold change in gene expression of the inoculated samples at 24, 48 and 72 hours post inoculation versus the control at 0 (hours before inoculation).