Transcription profiling by array of Arabidopsis roots exposed to roots of Hieracium pilosella to study root-root interactions

Plant roots perceive neighbouring roots even when resource depletion is low. The transcriptomic response to the presence or absence of an inferior competitor (Hieracium pilosella) is therefore examined in roots of A. thaliana. The experiment was set up in pots filled with non-sterile sand, that allowed to sample roots of eight week old Arabidopsis plants. 3 biological replicates per treatment were examined. Each of these replicates represents 3 pooled samples from individual plants.

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Schmid C, Bauer S, Müller B, Bartelheimer M