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A transposon-induced epigenetic change leads to sex determination in melon

Author

Listed:
  • Antoine Martin

    (INRA-CNRS, UMR1165, Unité de Recherche en Génomique Végétale, 2 rue Gaston Crémieux, F-91057 Evry, France)

  • Christelle Troadec

    (INRA-CNRS, UMR1165, Unité de Recherche en Génomique Végétale, 2 rue Gaston Crémieux, F-91057 Evry, France)

  • Adnane Boualem

    (INRA-CNRS, UMR1165, Unité de Recherche en Génomique Végétale, 2 rue Gaston Crémieux, F-91057 Evry, France)

  • Mazen Rajab

    (INRA-CNRS, UMR1165, Unité de Recherche en Génomique Végétale, 2 rue Gaston Crémieux, F-91057 Evry, France)

  • Ronan Fernandez

    (INRA-CNRS, UMR1165, Unité de Recherche en Génomique Végétale, 2 rue Gaston Crémieux, F-91057 Evry, France)

  • Halima Morin

    (Plateforme de Cytologie et d’Imagerie Végétale, Institut Jean Pierre Bourgin, INRA, 78026 Versailles Cedex, France)

  • Michel Pitrat

    (INRA, UR 1052, Unité de Génétique et d’Amélioration des Fruits et Légumes, BP 94, F-84143 Montfavet, France)

  • Catherine Dogimont

    (INRA, UR 1052, Unité de Génétique et d’Amélioration des Fruits et Légumes, BP 94, F-84143 Montfavet, France)

  • Abdelhafid Bendahmane

    (INRA-CNRS, UMR1165, Unité de Recherche en Génomique Végétale, 2 rue Gaston Crémieux, F-91057 Evry, France)

Abstract

Epigenetic changes determine sex in melon During the development of flowering plants, sex determination leads to the physical separation of male and female flowers from an originally bisexual floral meristem. Here, in melon, the transition from male to female flowers is shown to result from epigenetic changes in the promoter of a transcription factor, CmWIP1. These epigenetic changes are caused by insertion of a neighbouring transposon, which is required for initiation and maintenance of DNA methylation that spreads to the CmWIP1 promoter resulting in silencing of the gene. A model for the development of male, female and hermaphrodite flowers is proposed.

Suggested Citation

  • Antoine Martin & Christelle Troadec & Adnane Boualem & Mazen Rajab & Ronan Fernandez & Halima Morin & Michel Pitrat & Catherine Dogimont & Abdelhafid Bendahmane, 2009. "A transposon-induced epigenetic change leads to sex determination in melon," Nature, Nature, vol. 461(7267), pages 1135-1138, October.
    • Handle: RePEc:nat:nature:v:461:y:2009:i:7267:d:10.1038_nature08498
    DOI: 10.1038/nature08498
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    Cited by:

    1. Marine Duhamel & Michael E. Hood & Ricardo C. Rodríguez de la Vega & Tatiana Giraud, 2023. "Dynamics of transposable element accumulation in the non-recombining regions of mating-type chromosomes in anther-smut fungi," Nature Communications, Nature, vol. 14(1), pages 1-18, December.

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