MYB40 is an As(V) response transcription factor.
(A) Subcellular localization of MYB40–GFP fusion protein in Nicotiana benthamiana leaves. GFP alone was used as the control. Scale bar corresponds to 50 μm.
(B) qRT–PCR analysis of MYB40 in wild-type plants under As(V) stress. Seven-d-old wild-type seedlings were transferred to ½ MS medium containing 200 μM As(V), then harvested at the indicated time for qRT–PCR analysis. The qRT–PCR was performed with three technical replicates, and the experiment was repeated at least three times with similar results.