Expression profile of MtCBF4. Expression profiles of 2138 transcription factors were re-clustered using the TIGR MeV tool. (a) Expression profile to which MtCBF4 belongs. The pink line represents the main trend line. (b) Euclidian distance map of this profile. (c) Heatmap display of this profile. The color scale bar represents log2-transformed expression values from 4 to 12. The label at the right of each row represents the transcription factor family to which the probe set belongs. CK, control sample; ST, salt-treated sample; 6, 24, 48 are the time-points for salt stress measurement; 1, 2, and 3 indicate three biological replicates.