The levels of ACR mRNA are differentially
regulated by salt, cold, and light/dark treatment. Total RNA (10 μg)
from 2-week-old Arabidopsis seedlings treated with 250 mm
NaCl for 0, 1, or 4 h (A), 4°C for 2 h (B), or light/dark
for 48 h (C) was used for northern analysis to detect levels of
ACR1 to ACR8 mRNA. C, Control; CS, cold stress; L, light; D, dark. The
transcripts of ACR2 and ACR6 were not detectable. The ethidium
bromide-stained gel is shown at the bottom.