Total RNA was isolated following the incubation
in water or in 100 mm mannitol (Man),
3-o-methylglucose (OMG), Glc, Fru, or Suc for 15 h.
After quantifying abundance of mRNA with a phosphor imager, the x-ray
film was exposed for 12 and 2 d, respectively, for Frk1 and
Frk2.