Expression data from Arabidopsis roots and shoots grown with or without iron

Iron-deficiency repsonses in Arabidopsis are controlled by several bHLH transcription factors. FIT, for example has been shown to direct iron-uptake responses. However, the role of shoot and root expressed genes bHLH100 and bHLH101 has not be clarified. We used microarray to study what genes might be miss-regulated in the double mutant bhlh100/bhlh101 background 10-day-old Arabidopsis plants were divided into root and shoot tissues and harvested for RNA extraction.