Figure 4

GUS quantitative assays of enhancer trap lines with insertions into two NBS-LRR-encoding and one related gene. GUS expression levels of each enhancer trap line untreated or five days after application of JA or BTH. Treatments with ethanol (EtOH) or BTH carrier (carrier) were used as controls. Average GUS expression levels and standard deviations were based on three biological replicates. The background levels of GUS activity in untreated Col-0 plants were below 20 pmol 4-MU/μg protein/min.