Gene expression of Fe deficiency response genes in various SA mutants and wild type plants.

<p>A, <i>FIT</i>, <i>FRO2</i>, <i>IRT1</i>; B, <i>BHLH38</i>, <i>BHLH39</i>; SA mutants and wild type seedlings were grown for 11 d at + and −Fe. Roots were harvested for analysis. n = 2; * indicates a significant change (p<0.05) of −Fe versus +Fe; + indicates a significant change (p<0.05) of SA mutant versus WT. Gene expression was studied using reverse transcription-qPCR.