Figure 6.

Steady-state mRNA levels of DcSUT1 in lamina of different size classes of carrot leaves. Leaf lamina from 12-week-old carrot plants were separated into five size classes as shown in the schematic representation (upper panel). The bar above the smallest leaf (class 1) indicates a length of 10 cm. A northern blot with total RNA (10 μg/lane) was hybridized with the ³²P-labeled probe for DcSUT1 (A). As a probe for a constitutively expressed gene, a fragment of the 18S rRNA gene from tomato was used (middle).