Fig. 6. The expression of a cortex/endodermis-specific enhancer trap is altered in the scz meristem. Expression of the GFP-enhancer trap line J0571 in 3-day-old wild-type (A) and scz (B) meristems. (A) In wild type the marker is expressed in the quiescent centre, the cortex/endodermis initial, the cortex/endodermis daughter cells and in all the cells of the cortex and the endodermis. (B) The expression of the marker is displaced upwards (asterisk) in scz mutants. The expression is discontinuous (arrow). There are clusters of cells in the extra outer ground tissue layer that show low levels of expression (arrowhead). Bar, 25 µm.

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