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Nguyen HT, Cheaib M, Fournel M, Rios M, Gantet P, Laplaze L, Guyomarc’h S, Riemann M, Heitz T, Petitot AS, Champion A. Genetic analysis of the rice jasmonate receptors reveals specialized functions for OsCOI2. PLoS One 2023; 18:e0291385. [PMID: 37682975 PMCID: PMC10490909 DOI: 10.1371/journal.pone.0291385] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 08/25/2023] [Indexed: 09/10/2023] Open
Abstract
COI1-mediated perception of jasmonate is critical for plant development and responses to environmental stresses. Monocots such as rice have two groups of COI genes due to gene duplication: OsCOI1a and OsCOI1b that are functionally equivalent to the dicotyledons COI1 and OsCOI2 whose function remains unclear. In order to assess the function of OsCOI2 and its functional redundancy with COI1 genes, we developed a series of rice mutants in the 3 genes OsCOI1a, OsCOI1b and OsCOI2 by CRISPR Cas9-mediated editing and characterized their phenotype and responses to jasmonate. Characterization of OsCOI2 uncovered its important roles in root, leaf and flower development. In particular, we show that crown root growth inhibition by jasmonate relies on OsCOI2 and not on OsCOI1a nor on OsCOI1b, revealing a major function for the non-canonical OsCOI2 in jasmonate-dependent control of rice root growth. Collectively, these results point to a specialized function of OsCOI2 in the regulation of plant development in rice and indicate that sub-functionalisation of jasmonate receptors has occurred in the monocot phylum.
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Affiliation(s)
| | | | - Marie Fournel
- DIADE, IRD, Univ Montpellier, Montpellier, France
- IBMP, CNRS, Univ Strasbourg, Strasbourg, France
| | - Maelle Rios
- DIADE, IRD, Univ Montpellier, Montpellier, France
| | | | | | | | - Michael Riemann
- Karlsruhe Institute of Technology, Botanical Institute, Karlsruhe, Germany
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Bellande K, Trinh DC, Gonzalez AA, Dubois E, Petitot AS, Lucas M, Champion A, Gantet P, Laplaze L, Guyomarc’h S. PUCHI represses early meristem formation in developing lateral roots of Arabidopsis thaliana. J Exp Bot 2022; 73:3496-3510. [PMID: 35224628 PMCID: PMC9162184 DOI: 10.1093/jxb/erac079] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 02/25/2022] [Indexed: 05/21/2023]
Abstract
Lateral root organogenesis is a key process in the development of a plant's root system and its adaptation to the environment. During lateral root formation, an early phase of cell proliferation first produces a four-cell-layered primordium, and only from this stage onwards is a root meristem-like structure, expressing root stem cell niche marker genes, being established in the developing organ. Previous studies reported that the gene regulatory network controlling lateral root formation is organized into two subnetworks whose mutual inhibition may contribute to organ patterning. PUCHI encodes an AP2/ERF transcription factor expressed early during lateral root primordium development and required for correct lateral root formation. To dissect the molecular events occurring during this early phase, we generated time-series transcriptomic datasets profiling lateral root development in puchi-1 mutants and wild types. Transcriptomic and reporter analyses revealed that meristem-related genes were expressed ectopically at early stages of lateral root formation in puchi-1 mutants. We conclude that, consistent with the inhibition of genetic modules contributing to lateral root development, PUCHI represses ectopic establishment of meristematic cell identities at early stages of organ development. These findings shed light on gene network properties that orchestrate correct timing and patterning during lateral root formation.
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Affiliation(s)
| | | | - Anne-Alicia Gonzalez
- Univ Montpellier, CNRS, INSERM, Montpellier, France
- Montpellier GenomiX, France Génomique, Montpellier, France
| | - Emeric Dubois
- Univ Montpellier, CNRS, INSERM, Montpellier, France
- Montpellier GenomiX, France Génomique, Montpellier, France
| | | | - Mikaël Lucas
- DIADE, Univ Montpellier, IRD, Montpellier, France
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Passot S, Gnacko F, Moukouanga D, Lucas M, Guyomarc’h S, Ortega BM, Atkinson JA, Belko MN, Bennett MJ, Gantet P, Wells DM, Guédon Y, Vigouroux Y, Verdeil JL, Muller B, Laplaze L. Characterization of Pearl Millet Root Architecture and Anatomy Reveals Three Types of Lateral Roots. Front Plant Sci 2016; 7:829. [PMID: 27379124 PMCID: PMC4904005 DOI: 10.3389/fpls.2016.00829] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 05/26/2016] [Indexed: 05/04/2023]
Abstract
Pearl millet plays an important role for food security in arid regions of Africa and India. Nevertheless, it is considered an orphan crop as it lags far behind other cereals in terms of genetic improvement efforts. Breeding pearl millet varieties with improved root traits promises to deliver benefits in water and nutrient acquisition. Here, we characterize early pearl millet root system development using several different root phenotyping approaches that include rhizotrons and microCT. We report that early stage pearl millet root system development is characterized by a fast growing primary root that quickly colonizes deeper soil horizons. We also describe root anatomical studies that revealed three distinct types of lateral roots that form on both primary roots and crown roots. Finally, we detected significant variation for two root architectural traits, primary root lenght and lateral root density, in pearl millet inbred lines. This study provides the basis for subsequent genetic experiments to identify loci associated with interesting early root development traits in this important cereal.
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Affiliation(s)
- Sixtine Passot
- UMR DIADE, Institut de Recherche pour le Développement, MontpellierFrance
- UMR AGAP, Centre International de Recherche Agronomique pour le Développement–Virtual Plants, Institut National de Recherche en Informatique et en Automatique, MontpellierFrance
| | - Fatoumata Gnacko
- UMR DIADE, Institut de Recherche pour le Développement, MontpellierFrance
| | - Daniel Moukouanga
- UMR DIADE, Institut de Recherche pour le Développement, MontpellierFrance
- Laboratoire Mixte International Adaptation des Plantes et Microorganismes Associés aux Stress Environnementaux, DakarSénégal
| | - Mikaël Lucas
- UMR DIADE, Institut de Recherche pour le Développement, MontpellierFrance
- Laboratoire Mixte International Adaptation des Plantes et Microorganismes Associés aux Stress Environnementaux, DakarSénégal
- Laboratoire Commun de Microbiologie IRD/ISRA/UCAD, DakarSénégal
| | | | - Beatriz Moreno Ortega
- Laboratoire d’Ecophysiologie des Plantes sous Stress Environnementaux (UMR LEPSE, INRA-Supagro), MontpellierFrance
| | - Jonathan A. Atkinson
- Centre for Plant Integrative Biology, School of Biosciences, University of Nottingham, Sutton BoningtonUK
| | - Marème N. Belko
- Laboratoire Mixte International Adaptation des Plantes et Microorganismes Associés aux Stress Environnementaux, DakarSénégal
- Centre d’Etude Régional pour l’Amélioration de l’Adaptation à la Sécheresse, Institut Sénégalais des Recherches Agricoles, ThièsSénégal
| | - Malcolm J. Bennett
- Centre for Plant Integrative Biology, School of Biosciences, University of Nottingham, Sutton BoningtonUK
| | - Pascal Gantet
- UMR DIADE, Université de Montpellier, MontpellierFrance
| | - Darren M. Wells
- Centre for Plant Integrative Biology, School of Biosciences, University of Nottingham, Sutton BoningtonUK
| | - Yann Guédon
- UMR AGAP, Centre International de Recherche Agronomique pour le Développement–Virtual Plants, Institut National de Recherche en Informatique et en Automatique, MontpellierFrance
| | - Yves Vigouroux
- UMR DIADE, Institut de Recherche pour le Développement, MontpellierFrance
- Laboratoire Mixte International Adaptation des Plantes et Microorganismes Associés aux Stress Environnementaux, DakarSénégal
| | - Jean-Luc Verdeil
- Plateforme PHIV, UMR AGAP, Centre International de Recherche Agricole pour le Développement, MontpellierFrance
| | - Bertrand Muller
- Laboratoire d’Ecophysiologie des Plantes sous Stress Environnementaux (UMR LEPSE, INRA-Supagro), MontpellierFrance
| | - Laurent Laplaze
- UMR DIADE, Institut de Recherche pour le Développement, MontpellierFrance
- Laboratoire Mixte International Adaptation des Plantes et Microorganismes Associés aux Stress Environnementaux, DakarSénégal
- Laboratoire Commun de Microbiologie IRD/ISRA/UCAD, DakarSénégal
- *Correspondence: Laurent Laplaze,
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Lucas M, Kenobi K, von Wangenheim D, Voβ U, Swarup K, De Smet I, Van Damme D, Lawrence T, Péret B, Moscardi E, Barbeau D, Godin C, Salt D, Guyomarc’h S, Stelzer EHK, Maizel A, Laplaze L, Bennett MJ. Lateral root morphogenesis is dependent on the mechanical properties of the overlaying tissues. Proc Natl Acad Sci U S A 2013; 110:5229-34. [PMID: 23479644 PMCID: PMC3612681 DOI: 10.1073/pnas.1210807110] [Citation(s) in RCA: 171] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
In Arabidopsis, lateral root primordia (LRPs) originate from pericycle cells located deep within the parental root and have to emerge through endodermal, cortical, and epidermal tissues. These overlaying tissues place biomechanical constraints on the LRPs that are likely to impact their morphogenesis. This study probes the interplay between the patterns of cell division, organ shape, and overlaying tissues on LRP morphogenesis by exploiting recent advances in live plant cell imaging and image analysis. Our 3D/4D image analysis revealed that early stage LRPs exhibit tangential divisions that create a ring of cells corralling a population of rapidly dividing cells at its center. The patterns of division in the latter population of cells during LRP morphogenesis are not stereotypical. In contrast, statistical analysis demonstrated that the shape of new LRPs is highly conserved. We tested the relative importance of cell division pattern versus overlaying tissues on LRP morphogenesis using mutant and transgenic approaches. The double mutant aurora1 (aur1) aur2 disrupts the pattern of LRP cell divisions and impacts its growth dynamics, yet the new organ's dome shape remains normal. In contrast, manipulating the properties of overlaying tissues disrupted LRP morphogenesis. We conclude that the interaction with overlaying tissues, rather than the precise pattern of divisions, is most important for LRP morphogenesis and optimizes the process of lateral root emergence.
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Affiliation(s)
- Mikaël Lucas
- Centre for Plant Integrative Biology, University of Nottingham, Nottingham LE12 5RD, United Kingdom
- Institut de Recherche pour le Développement, Unité Mixte de Recherche (UMR) Diversité Adaptation et Développement des Plantes (DIADE), 34394 Montpellier Cedex 5, France
| | - Kim Kenobi
- Centre for Plant Integrative Biology, University of Nottingham, Nottingham LE12 5RD, United Kingdom
| | - Daniel von Wangenheim
- Buchmann Institute for Molecular Life Sciences, Goethe University Frankfurt, D-60438 Frankfurt am Main, Germany
- Center for Organismal Studies, University of Heidelberg, D-69120 Heidelberg, Germany
| | - Ute Voβ
- Centre for Plant Integrative Biology, University of Nottingham, Nottingham LE12 5RD, United Kingdom
| | - Kamal Swarup
- Centre for Plant Integrative Biology, University of Nottingham, Nottingham LE12 5RD, United Kingdom
| | - Ive De Smet
- Centre for Plant Integrative Biology, University of Nottingham, Nottingham LE12 5RD, United Kingdom
- Division of Plant and Crop Sciences, School of Biosciences, University of Nottingham, Loughborough LE12 5RD, United Kingdom
| | - Daniël Van Damme
- Department of Plant Systems Biology, VIB, B-9052 Gent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Gent, Belgium
| | - Tara Lawrence
- Centre for Plant Integrative Biology, University of Nottingham, Nottingham LE12 5RD, United Kingdom
| | - Benjamin Péret
- Centre for Plant Integrative Biology, University of Nottingham, Nottingham LE12 5RD, United Kingdom
| | - Eric Moscardi
- Institut National de Recherche en Informatique et Automatique, Virtual Plants team, Unité Mixte de Recherche Amélioration Génétique et Adaptation des Plantes, 34095 Montpellier, France
| | - Daniel Barbeau
- Institut National de Recherche en Informatique et Automatique, Virtual Plants team, Unité Mixte de Recherche Amélioration Génétique et Adaptation des Plantes, 34095 Montpellier, France
| | - Christophe Godin
- Institut National de Recherche en Informatique et Automatique, Virtual Plants team, Unité Mixte de Recherche Amélioration Génétique et Adaptation des Plantes, 34095 Montpellier, France
| | - David Salt
- Institute of Biological and Environmental Sciences, University of Aberdeen, Aberdeen AB24 3UU, United Kingdom; and
| | | | - Ernst H. K. Stelzer
- Buchmann Institute for Molecular Life Sciences, Goethe University Frankfurt, D-60438 Frankfurt am Main, Germany
| | - Alexis Maizel
- Center for Organismal Studies, University of Heidelberg, D-69120 Heidelberg, Germany
| | - Laurent Laplaze
- Institut de Recherche pour le Développement, Unité Mixte de Recherche (UMR) Diversité Adaptation et Développement des Plantes (DIADE), 34394 Montpellier Cedex 5, France
| | - Malcolm J. Bennett
- Centre for Plant Integrative Biology, University of Nottingham, Nottingham LE12 5RD, United Kingdom
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