Plant Molecular Biology

, Volume 49, Issue 3–4, pp 373–385 | Cite as

Auxin-responsive gene expression: genes, promoters and regulatory factors

  • Gretchen Hagen
  • Tom Guilfoyle


A molecular approach to investigate auxin signaling in plants has led to the identification of several classes of early/primary auxin response genes. Within the promoters of these genes, cis elements that confer auxin responsiveness (referred to as auxin-response elements or AuxREs) have been defined, and a family of trans-acting transcription factors (auxin-response factors or ARFs) that bind with specificity to AuxREs has been characterized. A family of auxin regulated proteins referred to as Aux/IAA proteins also play a key role in regulating these auxin-response genes. Auxin may regulate transcription on early response genes by influencing the types of interactions between ARFs and Aux/IAAs.

auxin response elements (AuxREs) auxin response factors (ARFs) auxin response genes 


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Copyright information

© Kluwer Academic Publishers 2002

Authors and Affiliations

  • Gretchen Hagen
    • 1
  • Tom Guilfoyle
    • 1
  1. 1.Department of BiochemistryUniversity of MissouriColumbiaUSA

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