Plant Molecular Biology

, Volume 18, Issue 6, pp 1083–1089

The activation process of Arabidopsis thaliana A1 gene encoding the translation elongation factor EF-1α is conserved among angiosperms

  • Catherine Curie
  • Thierry Liboz
  • Marie-Hélène Montané
  • Dominique Rouan
  • Michèle Axelos
  • Bernard Lescure
Research Articles

DOI: 10.1007/BF00047711

Cite this article as:
Curie, C., Liboz, T., Montané, MH. et al. Plant Mol Biol (1992) 18: 1083. doi:10.1007/BF00047711

Abstract

In Arabidopsis thaliana, the activation process of the A1 EF-1α gene depends on several elements. Using the GUS reporter gene, transient expression experiments have shown that mutations of upstream cis-acting elements of the A1 promoter, or the deletion of an intron located within the 5′ non-coding region, similarly affect expression in dicot or monocot protoplasts. The results reported here strongly suggest that this 5′ intron is properly spliced in Zea mays. We show that two trans-acting factors, specifically interacting with an upstream activating sequence (the TEF 1 box), are present in nuclear extracts prepared from A. thaliana, Brassica rapa, Nicotiana tabacum and Z. mays. In addition, a DNA sequence homologous to the TEF 1 box, found at approximately the same location within a Lycopersicon esculentum EF-1α promoter, interacts with the same trans-acting factors. Homologies found between the A. thaliana and L. esculentum TEF 1 box sequences have allowed us to define mutations of this upstream element which affect the interaction with the corresponding trans-acting factors. These results support the notion that the activation processes of A. thaliana EF-1α genes have been conserved among angiosperms and provide interesting data on the functional structure of the TEF 1 box.

Key words

translation elongation factor genespromoter analysisevolution

Copyright information

© Kluwer Academic Publishers 1992

Authors and Affiliations

  • Catherine Curie
    • 1
  • Thierry Liboz
    • 1
  • Marie-Hélène Montané
    • 2
  • Dominique Rouan
    • 1
  • Michèle Axelos
    • 1
  • Bernard Lescure
    • 1
  1. 1.Laboratoire de Biologie Moléculaire des Relations Plantes-MicroorganismesCNRS-INRACastanet-Tolosan CedexFrance
  2. 2.Rhône Poulenc Secteur AgroLyon Cedex 09France