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GUS expression analysis driven by the WRKY53 promoter in different WHY1 transgenic plants. GUS fluorometric quantitative activity was measured from leaves of 8- or 10-week-old transgenic plants (oeWHY1-HA, why1-1, and the wild type [WT]) stably transformed with the Pwrky53:GUS construct. Means and se of nine independent measurements are shown. The same letters mean no significant difference at P ≤ 0.05 based on Student’s t test. 4MUG, 4-Methylumbelliferyl-β-D-glucuronide.
