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A model for combinatorial regulation of the petunia R2R3-MYB transcription factor ODORANT1

  • Alex Van Moerkercke
  • Michel A Haring
  • Robert C Schuurink
Publishing year: 2012-04
Language: English
Pages: 20-518
Publication/Series: Plant Signaling and Behavior
Volume: 7
Issue: 4
Document type: Journal article
Publisher: Landes Bioscience

Abstract english

The emission of floral volatiles requires coordinated expression of biosynthetic genes. In the regulatory network of the volatile benzenoid/phenylpropanoid pathway in Petunia hybrida two master regulators of the pathway have been identified. The R2R3-MYB transcription factor EMISSION OF BENZENOIDS II (EOBII) utilizes a specific MYB binding site to activate the expression of the R2R3-MYB ODORANT1 (ODO1). However, because EOBII is expressed early in flower development, when ODO1 is not, there must be other factors that play a role in regulating expression of ODO1. Through functional analyses of ODO1 promoter fragments from fragrant and non-fragrant flowers, we provide evidence for additional players and present a model for combinatorial regulation of ODO1 expression in Petunia.


  • Biochemistry and Molecular Biology
  • Gene Expression Regulation, Plant
  • Models, Biological
  • Petunia
  • Plant Proteins
  • Promoter Regions, Genetic
  • Transcription Factors


  • ISSN: 1559-2316
Alex Van Moerkercke
E-mail: alex [dot] van_moerkercke [at] biol [dot] lu [dot] se

Postdoctoral fellow

Molecular Cell Biology

+46 46 222 49 49


Sölvegatan 35, Lund


Research group

Plant Biology



Postdoc host

Olivier Van Aken