Figure 2. GFP silencing in grapevine tissues.

(A) Silencing of the GFP is efficient in somatic tissues of GFFG+GFP transgenic grapevines but is impaired in meristematic tissues such as apical bud or occasional root apex and suppressed in calli. (B) Semi-quantitative analysis of the fluorescence in the tissues depicted in A. Fluorescence intensity is represented as grey level intensity/pixel. Means and standard deviations are calculated from at least 3 experimental repetitions of 5 different plants.