Fig. 4. Quantitative PCR analysis of Na+/K+-ATPase
-subunit mRNA abundance in individual gill preparations from
Pachygrapsus marmoratus following transfer for various time periods
(248 h) from 36
seawater to 10
(A,B) or to 45
(C,D). Values are means ± s.d. (N=3 or 4 measurements at each
time point using gills pooled from three or four animals) of data obtained
with primers NAKPMF1 and NAKPMR1 designed to detect both isoforms
simultaneously (Table 1). Two
independent experiments from 2002 (A,C) and 2003 (B,D) are presented. Relative
expression levels are indicated in relation to a standard reference (one
sample of gill 6 at 48 h after transfer to 10
). Significant
differences from zero time values (crabs in 36
seawater) are
indicated: *P<0.001;
P<0.01.