Figure 3From: Identification and functional characterisation of the promoter of the calcium sensor gene CBL1 from the xerophyte Ammopiptanthus mongolicusHistochemical analysis of GUS activity. GUS expression activity was detected by vacuuming seedlings in X-Gluc solution overnight using one-week-old transgenic tobacco seedlings, directed by AmCBL1 promoter construct S1, S2, S3 and B1S3. For positive and negative controls, 35S and WT were used separately.Back to article page