SHR overexpression induces the formation of supernumerary cell layers with cortex cell identity in rice

Henry Sophia, Dievart Anne, Divol Fanchon, Pauluzzi Germain, Meynard Donaldo, Swarup Ranjan, Wu Shuangyang, Gallagher Kimberly, Périn Christophe. 2017. SHR overexpression induces the formation of supernumerary cell layers with cortex cell identity in rice. Developmental Biology, 425 (1) : pp. 1-7.

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Abstract : The number of root cortex cell layers varies among plants, and many species have several cortical cell layers. We recently demonstrated that the two rice orthologs of the Arabidopsis SHR gene, OsSHR1 and OsSHR2, could complement the A. thaliana shr mutant. Moreover, OsSHR1 and OsSHR2 expression in A. thaliana roots induced the formation of extra root cortical cell layers. In this article, we demonstrate that the overexpression of AtSHR and OsSHR2 in rice roots leads to plants with wide and short roots that contain a high number of extra cortical cell layers. We hypothesize that SHR genes share a conserved function in the control of cortical cell layer division and the number of ground tissue cell layers in land plants. (Résumé d'auteur)

Mots-clés Agrovoc : Oryza sativa, Arabidopsis thaliana, Expression des gènes, Gène, Cortex, Différenciation cellulaire, Système racinaire, Développement biologique, Modèle végétal, Modèle de simulation, Transcription génique

Classification Agris : F62 - Plant physiology - Growth and development
F60 - Plant physiology and biochemistry
F50 - Plant structure
U10 - Computer science, mathematics and statistics

Champ stratégique Cirad : Axe 1 (2014-2018) - Agriculture écologiquement intensive

Auteurs et affiliations

  • Henry Sophia, CIRAD-BIOS-UMR AGAP (FRA)
  • Dievart Anne, CIRAD-BIOS-UMR AGAP (FRA) ORCID: 0000-0001-9460-4638
  • Divol Fanchon
  • Pauluzzi Germain
  • Meynard Donaldo, CIRAD-BIOS-UMR AGAP (FRA)
  • Swarup Ranjan, Nottingham University (GBR)
  • Wu Shuangyang, CIRAD-BIOS-UMR AGAP (FRA)
  • Gallagher Kimberly, CIRAD-BIOS-UMR AGAP (FRA)
  • Périn Christophe, CIRAD-BIOS-UMR AGAP (FRA)

Source : Cirad-Agritrop (

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