Fig. 5.
cals5 and cals12 seedlings have altered responses to excess iron. (A–D) Aniline blue staining of callose in (A and A') the wild type, (B and B') cals5-2, and (C and C') cals12-1 under (A–C) control conditions, and (A'–C') 24 h after treatment with 600 µM Fe. (D) Quantification of callose levels in cals5-2 and cals12-1 roots after 24 h of growth on control medium or medium containing 600 μM Fe. Asterisks indicate P<0.05, two-tailed t-test, n>19. (E–G') Treatment of cals5 and cals12 seedlings with 600 µM Fe has no effect on the movement of GFP. GFP localization in 6-day-old wild-type, cals5, and cals12 seedlings expressing SUC2:GFP 24 h after transfer to (E–G) standard MS (control) medium or (E'–G') medium containing 600 µM iron. QC:P ratios (as shown in Fig. 2) for (F( and (F') are 0.49 and 0.51, respectively, and 0.63 and 0.64 for (G) and (G'), respectively. Scale bars in A–G'=100 µm.
