Northern analysis of RNA isolated from various
potato tissues and probed with either potato FDH cDNA or pea SHMT cDNA.
Transcript sizes are, respectively, 1.4 and 1.5 kb. Ten micrograms of
RNA was loaded onto each lane, except for developing tubers, the lanes
of which were loaded with only 5 μg of RNA. Lf, Leaves; Ve, veins;
Ste, stems; Sto, stolons; Rt, roots; sfF, stamen-free flowers; Sta,
stamens; and dT, developing tubers. The autoradiographs were scanned
using the leaf sample as the reference for both probes, and the figures
were corrected according to the RNA loadings.