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The shr mutation blocks mitotic activity in the RAM following germination. A, CyclinB1:1:GUS expression during wild-type (WT) and shr embryo development. B, CyclinB1:1:GUS postgermination expression in the RAM of the wild type and shr at different DAG. C, LAX3pro:GUS expression in the RAM of shr at different DAG. The red line indicates the position of the QC, and the black bar indicates the start of the elongation zone coinciding with the LAX3pro:GUS expression.
