Figure 5.
Fe deficiency activates MPK3 and MPK6. (A) Transcription levels of MPK3 and MPK6 in the leaf and root of WT seedlings under Fe-sufficient (50 μM EDTA-Fe) and -deficient (0 μM EDTA-Fe) conditions. All values are expressed relative to the expression level under Fe-sufficient conditions (control—set to 1.0) as appropriate. Data are shown as the mean ±SEM (n = 3). (B) Immunoprecipitation kinase assay of MPK3 and MPK6 activity using Anti-p44/42 MAPK antibody. Ten-day-old seedlings were transferred to Fe-sufficient or -deficient nutrient solutions. Column marked with “**” indicate a highly significantly difference (P < 0.01).