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

Henry Sophia, Diévart 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) : 1-7.

Quartile : Q1, Sujet : DEVELOPMENTAL BIOLOGY

Résumé : 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.

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 - Physiologie végétale - Croissance et développement
F60 - Physiologie et biochimie végétale
F50 - Anatomie et morphologie des plantes
U10 - Informatique, mathématiques et statistiques

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

Auteurs et affiliations

• Henry Sophia, CIRAD-BIOS-UMR AGAP (FRA)
• Diévart Anne, CIRAD-BIOS-UMR AGAP (CHN) 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) ORCID: 0000-0002-2469-310X

Source : Cirad-Agritrop (https://agritrop.cirad.fr/584195/)

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