title: SHR overexpression induces the formation of supernumerary cell layers with cortex cell identity in rice.
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.
authors.affiliation: CIRAD, UMR AGAP, 34398 Montpellier Cedex 5, France.
authors.forename: S
authors.initials: S
authors.lastname: Henry
authors.affiliation: CIRAD, UMR AGAP, 34398 Montpellier Cedex 5, France.
authors.forename: A
authors.initials: A
authors.lastname: Dievart
authors.affiliation: CIRAD, UMR AGAP, 34398 Montpellier Cedex 5, France.
authors.forename: F
authors.initials: F
authors.lastname: Divol
authors.affiliation: CIRAD, UMR AGAP, 34398 Montpellier Cedex 5, France.
authors.forename: G
authors.initials: G
authors.lastname: Pauluzzi
authors.affiliation: CIRAD, UMR AGAP, 34398 Montpellier Cedex 5, France.
authors.forename: D
authors.initials: D
authors.lastname: Meynard
authors.affiliation: Centre for Plant Integrative Biology and School of Biosciences, University of Nottingham, Sutton Bonington LE12 5RD, UK.
authors.forename: R
authors.initials: R
authors.lastname: Swarup
authors.affiliation: Department of Biology, University of Pennsylvania, Philadelphia, PA 19104, USA.
authors.forename: S
authors.initials: S
authors.lastname: Wu
authors.affiliation: Department of Biology, University of Pennsylvania, Philadelphia, PA 19104, USA.
authors.forename: K L
authors.initials: KL
authors.lastname: Gallagher
authors.affiliation: CIRAD, UMR AGAP, 34398 Montpellier Cedex 5, France. Electronic address: perin@cirad.fr.
authors.forename: C
authors.initials: C
authors.lastname: Périn
mesh_terms: D017360:Arabidopsis / Q000166:cytology / Q000235:genetics / Q000378:metabolism; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism; D002455:Cell Division / Q000235:genetics; D018506:Gene Expression Regulation, Plant; D005816:Genetic Complementation Test; D018613:Microscopy, Confocal; D009154:Mutation; D012275:Oryza / Q000166:cytology / Q000235:genetics* / Q000378:metabolism; D010940:Plant Proteins / Q000235:genetics* / Q000378:metabolism; D018517:Plant Roots / Q000166:cytology / Q000235:genetics* / Q000378:metabolism; D030821:Plants, Genetically Modified; D020133:Reverse Transcriptase Polymerase Chain Reaction; D014157:Transcription Factors / Q000235:genetics / Q000378:metabolism
chemical_list: D029681:Arabidopsis Proteins; D010940:Plant Proteins; C410510:SHORT ROOT protein, Arabidopsis; D014157:Transcription Factors
keywords: AtSHR; CEID (cortical endodermis initial daughter); Cortex; Endodermis; OsSHR2; Rice; Root development