<p>A. The number and orientation of <i>VVE</i> tandems is illustrated (not to scale). <i>VVE</i>, represented with black arrows, is placed upstream of the minimal 35S promoter (−65; black box) to drive <i>uidA</i> (blank box) expression (see “Materials and methods”). B. Quantitative GUS activity analysis of the tandem construction in leaves of 10 d transgenic Arabidopsis seedlings. pFGC-DR and pFGC-MiniGUS were used as positive and negative controls, respectively. GUS activity in pFGC-DR transgenic seedlings was assigned as 100%. GUS activity is replicated three times of each collection of seedlings from independent transgenic lines (indicated in parentheses) per construction. Error bars are standard deviations.</p
