1
|
Cohen AA, Keeffe JR, Schiepers A, Dross SE, Greaney AJ, Rorick AV, Gao H, Gnanapragasam PN, Fan C, West AP, Ramsingh AI, Erasmus JH, Pata JD, Muramatsu H, Pardi N, Lin PJ, Baxter S, Cruz R, Quintanar-Audelo M, Robb E, Serrano-Amatriain C, Magneschi L, Fotheringham IG, Fuller DH, Victora GD, Bjorkman PJ. Mosaic sarbecovirus vaccination elicits cross-reactive responses in pre-immunized animals. bioRxiv 2024:2024.02.08.576722. [PMID: 38370696 PMCID: PMC10871317 DOI: 10.1101/2024.02.08.576722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Immunization with mosaic-8b [60-mer nanoparticles presenting 8 SARS-like betacoronavirus (sarbecovirus) receptor-binding domains (RBDs)] elicits more broadly cross-reactive antibodies than homotypic SARS-CoV-2 RBD-only nanoparticles and protects against sarbecoviruses. To investigate original antigenic sin (OAS) effects on mosaic-8b efficacy, we evaluated effects of prior COVID-19 vaccinations in non-human primates and mice on sarbecovirus response breadths elicited by mosaic-8b, admix-8b (8 homotypics), and homotypic SARS-CoV-2, finding greatest cross-reactivity for mosaic-8b. As demonstrated by molecular fate-mapping in which antibodies derived from specific cohorts of B cells are differentially detected, B cells primed by WA1 spike mRNA-LNP dominated antibody responses after RBD-nanoparticle boosting. While mosaic-8b- and homotypic-nanoparticles boosted cross-reactive antibodies, de novo antibodies were predominantly induced with mosaic-8b boosting, and these were specific for variant RBDs with increased identity to RBDs on mosaic-8b. These results inform OAS mechanisms and support using mosaic-8b to protect COVID-19 vaccinated/infected humans against as-yet-unknown SARS-CoV-2 variants and animal sarbecoviruses with human spillover potential.
Collapse
Affiliation(s)
- Alexander A. Cohen
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
- These authors contributed equally
| | - Jennifer R. Keeffe
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
- These authors contributed equally
| | - Ariën Schiepers
- Laboratory of Lymphocyte Dynamics, The Rockefeller University, New York, NY, 10065, USA
| | - Sandra E. Dross
- Department of Microbiology, University of Washington, Seattle, WA 98195, USA
- National Primate Research Center, Seattle, WA 98121, USA
| | - Allison J. Greaney
- Medical Scientist Training Program, University of Washington, Seattle, WA 98195, USA
| | - Annie V. Rorick
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Han Gao
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | | | - Chengcheng Fan
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | - Anthony P. West
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
| | | | | | - Janice D. Pata
- Wadsworth Center, New York State Department of Health and Department of Biomedical Sciences, University at Albany, Albany, NY, 12201, USA
| | - Hiromi Muramatsu
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Norbert Pardi
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | | | - Scott Baxter
- Ingenza Ltd, Roslin Innovation Centre, Charnock Bradley Building, Roslin, EH25 9RG, UK
| | - Rita Cruz
- Ingenza Ltd, Roslin Innovation Centre, Charnock Bradley Building, Roslin, EH25 9RG, UK
| | - Martina Quintanar-Audelo
- Ingenza Ltd, Roslin Innovation Centre, Charnock Bradley Building, Roslin, EH25 9RG, UK
- Present address: Centre for Inflammation Research and Institute of Regeneration and Repair, The University of Edinburgh, Edinburgh, EH16 4UU, UK
| | - Ellis Robb
- Ingenza Ltd, Roslin Innovation Centre, Charnock Bradley Building, Roslin, EH25 9RG, UK
| | | | - Leonardo Magneschi
- Ingenza Ltd, Roslin Innovation Centre, Charnock Bradley Building, Roslin, EH25 9RG, UK
| | - Ian G. Fotheringham
- Ingenza Ltd, Roslin Innovation Centre, Charnock Bradley Building, Roslin, EH25 9RG, UK
| | - Deborah H. Fuller
- Department of Microbiology, University of Washington, Seattle, WA 98195, USA
- National Primate Research Center, Seattle, WA 98121, USA
| | - Gabriel D. Victora
- Laboratory of Lymphocyte Dynamics, The Rockefeller University, New York, NY, 10065, USA
| | - Pamela J. Bjorkman
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA
- Lead contact
| |
Collapse
|
2
|
Kjeldsen A, Kay JE, Baxter S, McColm S, Serrano‐Amatriain C, Parker S, Robb E, Arnold SA, Gilmour C, Raper A, Robertson G, Fleming R, Smith BO, Fotheringham IG, Christie JM, Magneschi L. The fluorescent protein iLOV as a reporter for screening of high‐yield production of antimicrobial peptides in
Pichia pastoris. Microb Biotechnol 2022; 15:2126-2139. [PMID: 35312165 PMCID: PMC9249318 DOI: 10.1111/1751-7915.14034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 03/03/2022] [Accepted: 03/05/2022] [Indexed: 11/28/2022] Open
Abstract
The methylotrophic yeast Pichia pastoris is commonly used for the production of recombinant proteins at scale. The identification of an optimally overexpressing strain following transformation can be time and reagent consuming. Fluorescent reporters like GFP have been used to assist identification of superior producers, but their relatively big size, maturation requirements and narrow temperature range restrict their applications. Here, we introduce the use of iLOV, a flavin‐based fluorescent protein, as a fluorescent marker to identify P. pastoris high‐yielding strains easily and rapidly. The use of this fluorescent protein as a fusion partner is exemplified by the production of the antimicrobial peptide NI01, a difficult target to overexpress in its native form. iLOV fluorescence correlated well with protein expression level and copy number of the chromosomally integrated gene. An easy and simple medium‐throughput plate‐based screen directly following transformation is demonstrated for low complexity screening, while a high‐throughput method using fluorescence‐activated cell sorting (FACS) allowed for comprehensive library screening. Both codon optimization of the iLOV_NI01 fusion cassettes and different integration strategies into the P. pastoris genome were tested to produce and isolate a high‐yielding strain. Checking the genetic stability, process reproducibility and following the purification of the active native peptide are eased by visualization of and efficient cleavage from the iLOV reporter. We show that this system can be used for expression and screening of several different antimicrobial peptides recombinantly produced in P. pastoris.
Collapse
Affiliation(s)
- Annemette Kjeldsen
- Ingenza Ltd Roslin Innovation Centre Charnock Bradley Building Roslin EH25 9RG UK
- Institute of Molecular, Cell and Systems Biology College of Medical, Veterinary and Life Sciences University of Glasgow Bower Building Glasgow G12 8QQ UK
| | - Jack E. Kay
- Ingenza Ltd Roslin Innovation Centre Charnock Bradley Building Roslin EH25 9RG UK
| | - Scott Baxter
- Ingenza Ltd Roslin Innovation Centre Charnock Bradley Building Roslin EH25 9RG UK
| | - Stephen McColm
- Ingenza Ltd Roslin Innovation Centre Charnock Bradley Building Roslin EH25 9RG UK
| | | | - Scott Parker
- Ingenza Ltd Roslin Innovation Centre Charnock Bradley Building Roslin EH25 9RG UK
| | - Ellis Robb
- Ingenza Ltd Roslin Innovation Centre Charnock Bradley Building Roslin EH25 9RG UK
| | - S. Alison Arnold
- Ingenza Ltd Roslin Innovation Centre Charnock Bradley Building Roslin EH25 9RG UK
| | - Craig Gilmour
- Ingenza Ltd Roslin Innovation Centre Charnock Bradley Building Roslin EH25 9RG UK
| | - Anna Raper
- The Roslin Institute & Royal (Dick) School of Veterinary Studies University of Edinburgh Easter Bush Midlothian EH25 9RG UK
| | - Graeme Robertson
- The Roslin Institute & Royal (Dick) School of Veterinary Studies University of Edinburgh Easter Bush Midlothian EH25 9RG UK
| | - Robert Fleming
- The Roslin Institute & Royal (Dick) School of Veterinary Studies University of Edinburgh Easter Bush Midlothian EH25 9RG UK
| | - Brian O. Smith
- Institute of Molecular, Cell and Systems Biology College of Medical, Veterinary and Life Sciences University of Glasgow Bower Building Glasgow G12 8QQ UK
| | - Ian G. Fotheringham
- Ingenza Ltd Roslin Innovation Centre Charnock Bradley Building Roslin EH25 9RG UK
| | - John M. Christie
- Institute of Molecular, Cell and Systems Biology College of Medical, Veterinary and Life Sciences University of Glasgow Bower Building Glasgow G12 8QQ UK
| | - Leonardo Magneschi
- Ingenza Ltd Roslin Innovation Centre Charnock Bradley Building Roslin EH25 9RG UK
| |
Collapse
|
3
|
Bo DD, Magneschi L, Bedhomme M, Billey E, Deragon E, Storti M, Menneteau M, Richard C, Rak C, Lapeyre M, Lembrouk M, Conte M, Gros V, Tourcier G, Giustini C, Falconet D, Curien G, Allorent G, Petroutsos D, Laeuffer F, Fourage L, Jouhet J, Maréchal E, Finazzi G, Collin S. Consequences of Mixotrophy on Cell Energetic Metabolism in Microchloropsis gaditana Revealed by Genetic Engineering and Metabolic Approaches. Front Plant Sci 2021; 12:628684. [PMID: 34113360 PMCID: PMC8185151 DOI: 10.3389/fpls.2021.628684] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 03/31/2021] [Indexed: 06/12/2023]
Abstract
Algae belonging to the Microchloropsis genus are promising organisms for biotech purposes, being able to accumulate large amounts of lipid reserves. These organisms adapt to different trophic conditions, thriving in strict photoautotrophic conditions, as well as in the concomitant presence of light plus reduced external carbon as energy sources (mixotrophy). In this work, we investigated the mixotrophic responses of Microchloropsis gaditana (formerly Nannochloropsis gaditana). Using the Biolog growth test, in which cells are loaded into multiwell plates coated with different organic compounds, we could not find a suitable substrate for Microchloropsis mixotrophy. By contrast, addition of the Lysogeny broth (LB) to the inorganic growth medium had a benefit on growth, enhancing respiratory activity at the expense of photosynthetic performances. To further dissect the role of respiration in Microchloropsis mixotrophy, we focused on the mitochondrial alternative oxidase (AOX), a protein involved in energy management in other algae prospering in mixotrophy. Knocking-out the AOX1 gene by transcription activator-like effector nuclease (TALE-N) led to the loss of capacity to implement growth upon addition of LB supporting the hypothesis that the effect of this medium was related to a provision of reduced carbon. We conclude that mixotrophic growth in Microchloropsis is dominated by respiratory rather than by photosynthetic energetic metabolism and discuss the possible reasons for this behavior in relationship with fatty acid breakdown via β-oxidation in this oleaginous alga.
Collapse
Affiliation(s)
- Davide Dal Bo
- Université Grenoble Alpes (UGA), Centre National Recherche Scientifique (CNRS), Commissariat Energie Atomique, Energies Alternatives (CEA), Institut National Recherche Agriculture, Alimentation, Environnement (INRAE), Interdisciplinary Research Institute of Grenoble, IRIG-Laboratoire de Physiologie Cellulaire et Végétale, Grenoble, France
| | - Leonardo Magneschi
- Université Grenoble Alpes (UGA), Centre National Recherche Scientifique (CNRS), Commissariat Energie Atomique, Energies Alternatives (CEA), Institut National Recherche Agriculture, Alimentation, Environnement (INRAE), Interdisciplinary Research Institute of Grenoble, IRIG-Laboratoire de Physiologie Cellulaire et Végétale, Grenoble, France
| | - Mariette Bedhomme
- Université Grenoble Alpes (UGA), Centre National Recherche Scientifique (CNRS), Commissariat Energie Atomique, Energies Alternatives (CEA), Institut National Recherche Agriculture, Alimentation, Environnement (INRAE), Interdisciplinary Research Institute of Grenoble, IRIG-Laboratoire de Physiologie Cellulaire et Végétale, Grenoble, France
| | - Elodie Billey
- Université Grenoble Alpes (UGA), Centre National Recherche Scientifique (CNRS), Commissariat Energie Atomique, Energies Alternatives (CEA), Institut National Recherche Agriculture, Alimentation, Environnement (INRAE), Interdisciplinary Research Institute of Grenoble, IRIG-Laboratoire de Physiologie Cellulaire et Végétale, Grenoble, France
- Total Refining Chemicals, Tour Coupole, Paris La Défense, France
| | - Etienne Deragon
- Université Grenoble Alpes (UGA), Centre National Recherche Scientifique (CNRS), Commissariat Energie Atomique, Energies Alternatives (CEA), Institut National Recherche Agriculture, Alimentation, Environnement (INRAE), Interdisciplinary Research Institute of Grenoble, IRIG-Laboratoire de Physiologie Cellulaire et Végétale, Grenoble, France
| | - Mattia Storti
- Université Grenoble Alpes (UGA), Centre National Recherche Scientifique (CNRS), Commissariat Energie Atomique, Energies Alternatives (CEA), Institut National Recherche Agriculture, Alimentation, Environnement (INRAE), Interdisciplinary Research Institute of Grenoble, IRIG-Laboratoire de Physiologie Cellulaire et Végétale, Grenoble, France
| | - Mathilde Menneteau
- Université Grenoble Alpes (UGA), Centre National Recherche Scientifique (CNRS), Commissariat Energie Atomique, Energies Alternatives (CEA), Institut National Recherche Agriculture, Alimentation, Environnement (INRAE), Interdisciplinary Research Institute of Grenoble, IRIG-Laboratoire de Physiologie Cellulaire et Végétale, Grenoble, France
| | - Christelle Richard
- Université Grenoble Alpes (UGA), Centre National Recherche Scientifique (CNRS), Commissariat Energie Atomique, Energies Alternatives (CEA), Institut National Recherche Agriculture, Alimentation, Environnement (INRAE), Interdisciplinary Research Institute of Grenoble, IRIG-Laboratoire de Physiologie Cellulaire et Végétale, Grenoble, France
| | - Camille Rak
- Université Grenoble Alpes (UGA), Centre National Recherche Scientifique (CNRS), Commissariat Energie Atomique, Energies Alternatives (CEA), Institut National Recherche Agriculture, Alimentation, Environnement (INRAE), Interdisciplinary Research Institute of Grenoble, IRIG-Laboratoire de Physiologie Cellulaire et Végétale, Grenoble, France
| | - Morgane Lapeyre
- Université Grenoble Alpes (UGA), Centre National Recherche Scientifique (CNRS), Commissariat Energie Atomique, Energies Alternatives (CEA), Institut National Recherche Agriculture, Alimentation, Environnement (INRAE), Interdisciplinary Research Institute of Grenoble, IRIG-Laboratoire de Physiologie Cellulaire et Végétale, Grenoble, France
| | - Mehdi Lembrouk
- Université Grenoble Alpes (UGA), Centre National Recherche Scientifique (CNRS), Commissariat Energie Atomique, Energies Alternatives (CEA), Institut National Recherche Agriculture, Alimentation, Environnement (INRAE), Interdisciplinary Research Institute of Grenoble, IRIG-Laboratoire de Physiologie Cellulaire et Végétale, Grenoble, France
| | - Melissa Conte
- Université Grenoble Alpes (UGA), Centre National Recherche Scientifique (CNRS), Commissariat Energie Atomique, Energies Alternatives (CEA), Institut National Recherche Agriculture, Alimentation, Environnement (INRAE), Interdisciplinary Research Institute of Grenoble, IRIG-Laboratoire de Physiologie Cellulaire et Végétale, Grenoble, France
| | - Valérie Gros
- Université Grenoble Alpes (UGA), Centre National Recherche Scientifique (CNRS), Commissariat Energie Atomique, Energies Alternatives (CEA), Institut National Recherche Agriculture, Alimentation, Environnement (INRAE), Interdisciplinary Research Institute of Grenoble, IRIG-Laboratoire de Physiologie Cellulaire et Végétale, Grenoble, France
| | - Guillaume Tourcier
- Université Grenoble Alpes (UGA), Centre National Recherche Scientifique (CNRS), Commissariat Energie Atomique, Energies Alternatives (CEA), Institut National Recherche Agriculture, Alimentation, Environnement (INRAE), Interdisciplinary Research Institute of Grenoble, IRIG-Laboratoire de Physiologie Cellulaire et Végétale, Grenoble, France
| | - Cécile Giustini
- Université Grenoble Alpes (UGA), Centre National Recherche Scientifique (CNRS), Commissariat Energie Atomique, Energies Alternatives (CEA), Institut National Recherche Agriculture, Alimentation, Environnement (INRAE), Interdisciplinary Research Institute of Grenoble, IRIG-Laboratoire de Physiologie Cellulaire et Végétale, Grenoble, France
| | - Denis Falconet
- Université Grenoble Alpes (UGA), Centre National Recherche Scientifique (CNRS), Commissariat Energie Atomique, Energies Alternatives (CEA), Institut National Recherche Agriculture, Alimentation, Environnement (INRAE), Interdisciplinary Research Institute of Grenoble, IRIG-Laboratoire de Physiologie Cellulaire et Végétale, Grenoble, France
| | - Gilles Curien
- Université Grenoble Alpes (UGA), Centre National Recherche Scientifique (CNRS), Commissariat Energie Atomique, Energies Alternatives (CEA), Institut National Recherche Agriculture, Alimentation, Environnement (INRAE), Interdisciplinary Research Institute of Grenoble, IRIG-Laboratoire de Physiologie Cellulaire et Végétale, Grenoble, France
| | - Guillaume Allorent
- Université Grenoble Alpes (UGA), Centre National Recherche Scientifique (CNRS), Commissariat Energie Atomique, Energies Alternatives (CEA), Institut National Recherche Agriculture, Alimentation, Environnement (INRAE), Interdisciplinary Research Institute of Grenoble, IRIG-Laboratoire de Physiologie Cellulaire et Végétale, Grenoble, France
| | - Dimitris Petroutsos
- Université Grenoble Alpes (UGA), Centre National Recherche Scientifique (CNRS), Commissariat Energie Atomique, Energies Alternatives (CEA), Institut National Recherche Agriculture, Alimentation, Environnement (INRAE), Interdisciplinary Research Institute of Grenoble, IRIG-Laboratoire de Physiologie Cellulaire et Végétale, Grenoble, France
| | | | - Laurent Fourage
- Total Refining Chemicals, Tour Coupole, Paris La Défense, France
| | - Juliette Jouhet
- Université Grenoble Alpes (UGA), Centre National Recherche Scientifique (CNRS), Commissariat Energie Atomique, Energies Alternatives (CEA), Institut National Recherche Agriculture, Alimentation, Environnement (INRAE), Interdisciplinary Research Institute of Grenoble, IRIG-Laboratoire de Physiologie Cellulaire et Végétale, Grenoble, France
| | - Eric Maréchal
- Université Grenoble Alpes (UGA), Centre National Recherche Scientifique (CNRS), Commissariat Energie Atomique, Energies Alternatives (CEA), Institut National Recherche Agriculture, Alimentation, Environnement (INRAE), Interdisciplinary Research Institute of Grenoble, IRIG-Laboratoire de Physiologie Cellulaire et Végétale, Grenoble, France
| | - Giovanni Finazzi
- Université Grenoble Alpes (UGA), Centre National Recherche Scientifique (CNRS), Commissariat Energie Atomique, Energies Alternatives (CEA), Institut National Recherche Agriculture, Alimentation, Environnement (INRAE), Interdisciplinary Research Institute of Grenoble, IRIG-Laboratoire de Physiologie Cellulaire et Végétale, Grenoble, France
| | - Séverine Collin
- Université Grenoble Alpes (UGA), Centre National Recherche Scientifique (CNRS), Commissariat Energie Atomique, Energies Alternatives (CEA), Institut National Recherche Agriculture, Alimentation, Environnement (INRAE), Interdisciplinary Research Institute of Grenoble, IRIG-Laboratoire de Physiologie Cellulaire et Végétale, Grenoble, France
- Total Refining Chemicals, Tour Coupole, Paris La Défense, France
| |
Collapse
|
4
|
Billey E, Magneschi L, Leterme S, Bedhomme M, Andres-Robin A, Poulet L, Michaud M, Finazzi G, Dumas R, Crouzy S, Laueffer F, Fourage L, Rébeillé F, Amato A, Collin S, Jouhet J, Maréchal E. Characterization of the Bubblegum acyl-CoA synthetase of Microchloropsis gaditana. Plant Physiol 2021; 185:815-835. [PMID: 33793914 PMCID: PMC8133546 DOI: 10.1093/plphys/kiaa110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 12/15/2020] [Indexed: 05/15/2023]
Abstract
The metabolic pathways of glycerolipids are well described in cells containing chloroplasts limited by a two-membrane envelope but not in cells containing plastids limited by four membranes, including heterokonts. Fatty acids (FAs) produced in the plastid, palmitic and palmitoleic acids (16:0 and 16:1), are used in the cytosol for the synthesis of glycerolipids via various routes, requiring multiple acyl-Coenzyme A (CoA) synthetases (ACS). Here, we characterized an ACS of the Bubblegum subfamily in the photosynthetic eukaryote Microchloropsis gaditana, an oleaginous heterokont used for the production of lipids for multiple applications. Genome engineering with TALE-N allowed the generation of MgACSBG point mutations, but no knockout was obtained. Point mutations triggered an overall decrease of 16:1 in lipids, a specific increase of unsaturated 18-carbon acyls in phosphatidylcholine and decrease of 20-carbon acyls in the betaine lipid diacylglyceryl-trimethyl-homoserine. The profile of acyl-CoAs highlighted a decrease in 16:1-CoA and 18:3-CoA. Structural modeling supported that mutations affect accessibility of FA to the MgACSBG reaction site. Expression in yeast defective in acyl-CoA biosynthesis further confirmed that point mutations affect ACSBG activity. Altogether, this study supports a critical role of heterokont MgACSBG in the production of 16:1-CoA and 18:3-CoA. In M. gaditana mutants, the excess saturated and monounsaturated FAs were diverted to triacylglycerol, thus suggesting strategies to improve the oil content in this microalga.
Collapse
Affiliation(s)
- Elodie Billey
- Laboratoire de Physiologie Cellulaire et Végétale, Unité mixte de Recherche 5168 CNRS–CEA–INRA–Univ. Grenoble-Alpes, IRIG, CEA Grenoble, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
- Total Raffinage-Chimie, Tour Coupole, 2 Place Jean Millier, 92078 Paris La Défense, France
| | - Leonardo Magneschi
- Laboratoire de Physiologie Cellulaire et Végétale, Unité mixte de Recherche 5168 CNRS–CEA–INRA–Univ. Grenoble-Alpes, IRIG, CEA Grenoble, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
| | - Sébastien Leterme
- Laboratoire de Physiologie Cellulaire et Végétale, Unité mixte de Recherche 5168 CNRS–CEA–INRA–Univ. Grenoble-Alpes, IRIG, CEA Grenoble, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
| | - Mariette Bedhomme
- Laboratoire de Physiologie Cellulaire et Végétale, Unité mixte de Recherche 5168 CNRS–CEA–INRA–Univ. Grenoble-Alpes, IRIG, CEA Grenoble, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
- Total Raffinage-Chimie, Tour Coupole, 2 Place Jean Millier, 92078 Paris La Défense, France
| | - Amélie Andres-Robin
- Laboratoire de Physiologie Cellulaire et Végétale, Unité mixte de Recherche 5168 CNRS–CEA–INRA–Univ. Grenoble-Alpes, IRIG, CEA Grenoble, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
| | - Laurent Poulet
- Laboratoire de Physiologie Cellulaire et Végétale, Unité mixte de Recherche 5168 CNRS–CEA–INRA–Univ. Grenoble-Alpes, IRIG, CEA Grenoble, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
| | - Morgane Michaud
- Laboratoire de Physiologie Cellulaire et Végétale, Unité mixte de Recherche 5168 CNRS–CEA–INRA–Univ. Grenoble-Alpes, IRIG, CEA Grenoble, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
| | - Giovanni Finazzi
- Laboratoire de Physiologie Cellulaire et Végétale, Unité mixte de Recherche 5168 CNRS–CEA–INRA–Univ. Grenoble-Alpes, IRIG, CEA Grenoble, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
| | - Renaud Dumas
- Laboratoire de Physiologie Cellulaire et Végétale, Unité mixte de Recherche 5168 CNRS–CEA–INRA–Univ. Grenoble-Alpes, IRIG, CEA Grenoble, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
| | - Serge Crouzy
- Laboratoire de Chimie et Biologie des Métaux, Unité mixte de Recherche 5249 CNRS–CEA–Univ. Grenoble Alpes, IRIG, CEA Grenoble, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
| | - Frédéric Laueffer
- Total Raffinage-Chimie, Tour Coupole, 2 Place Jean Millier, 92078 Paris La Défense, France
| | - Laurent Fourage
- Total Raffinage-Chimie, Tour Coupole, 2 Place Jean Millier, 92078 Paris La Défense, France
| | - Fabrice Rébeillé
- Laboratoire de Physiologie Cellulaire et Végétale, Unité mixte de Recherche 5168 CNRS–CEA–INRA–Univ. Grenoble-Alpes, IRIG, CEA Grenoble, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
| | - Alberto Amato
- Laboratoire de Physiologie Cellulaire et Végétale, Unité mixte de Recherche 5168 CNRS–CEA–INRA–Univ. Grenoble-Alpes, IRIG, CEA Grenoble, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
| | - Séverine Collin
- Total Raffinage-Chimie, Tour Coupole, 2 Place Jean Millier, 92078 Paris La Défense, France
| | - Juliette Jouhet
- Laboratoire de Physiologie Cellulaire et Végétale, Unité mixte de Recherche 5168 CNRS–CEA–INRA–Univ. Grenoble-Alpes, IRIG, CEA Grenoble, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
| | - Eric Maréchal
- Laboratoire de Physiologie Cellulaire et Végétale, Unité mixte de Recherche 5168 CNRS–CEA–INRA–Univ. Grenoble-Alpes, IRIG, CEA Grenoble, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
| |
Collapse
|
5
|
Ramundo S, Asakura Y, Salomé PA, Strenkert D, Boone M, Mackinder LCM, Takafuji K, Dinc E, Rahire M, Crèvecoeur M, Magneschi L, Schaad O, Hippler M, Jonikas MC, Merchant S, Nakai M, Rochaix JD, Walter P. Coexpressed subunits of dual genetic origin define a conserved supercomplex mediating essential protein import into chloroplasts. Proc Natl Acad Sci U S A 2020; 117:32739-32749. [PMID: 33273113 PMCID: PMC7768757 DOI: 10.1073/pnas.2014294117] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
In photosynthetic eukaryotes, thousands of proteins are translated in the cytosol and imported into the chloroplast through the concerted action of two translocons-termed TOC and TIC-located in the outer and inner membranes of the chloroplast envelope, respectively. The degree to which the molecular composition of the TOC and TIC complexes is conserved over phylogenetic distances has remained controversial. Here, we combine transcriptomic, biochemical, and genetic tools in the green alga Chlamydomonas (Chlamydomonas reinhardtii) to demonstrate that, despite a lack of evident sequence conservation for some of its components, the algal TIC complex mirrors the molecular composition of a TIC complex from Arabidopsis thaliana. The Chlamydomonas TIC complex contains three nuclear-encoded subunits, Tic20, Tic56, and Tic100, and one chloroplast-encoded subunit, Tic214, and interacts with the TOC complex, as well as with several uncharacterized proteins to form a stable supercomplex (TIC-TOC), indicating that protein import across both envelope membranes is mechanistically coupled. Expression of the nuclear and chloroplast genes encoding both known and uncharacterized TIC-TOC components is highly coordinated, suggesting that a mechanism for regulating its biogenesis across compartmental boundaries must exist. Conditional repression of Tic214, the only chloroplast-encoded subunit in the TIC-TOC complex, impairs the import of chloroplast proteins with essential roles in chloroplast ribosome biogenesis and protein folding and induces a pleiotropic stress response, including several proteins involved in the chloroplast unfolded protein response. These findings underscore the functional importance of the TIC-TOC supercomplex in maintaining chloroplast proteostasis.
Collapse
Affiliation(s)
- Silvia Ramundo
- Department of Biochemistry and Biophysics, University of California, San Francisco, CA 94143
- Howard Hughes Medical Institute, Chevy Chase, MD 20815
| | - Yukari Asakura
- Laboratory of Organelle Biology, Institute for Protein Research, Osaka University, Osaka 565-0871, Japan
| | - Patrice A Salomé
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095
| | - Daniela Strenkert
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095
| | - Morgane Boone
- Department of Biochemistry and Biophysics, University of California, San Francisco, CA 94143
- Howard Hughes Medical Institute, Chevy Chase, MD 20815
| | - Luke C M Mackinder
- Department of Biology, University of York, York YO10 5DD, United Kingdom
| | - Kazuaki Takafuji
- Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan
| | - Emine Dinc
- Department of Molecular Biology, University of Geneva, Geneva CH-1211, Switzerland
- Department of Plant Biology, University of Geneva, Geneva CH-1211, Switzerland
| | - Michèle Rahire
- Department of Molecular Biology, University of Geneva, Geneva CH-1211, Switzerland
- Department of Plant Biology, University of Geneva, Geneva CH-1211, Switzerland
| | - Michèle Crèvecoeur
- Department of Molecular Biology, University of Geneva, Geneva CH-1211, Switzerland
- Department of Plant Biology, University of Geneva, Geneva CH-1211, Switzerland
| | - Leonardo Magneschi
- Institute of Plant Biology and Biotechnology, University of Münster, Münster 48143, Germany
| | - Olivier Schaad
- Department of Biochemistry, University of Geneva, Geneva CH-1211, Switzerland
| | - Michael Hippler
- Institute of Plant Biology and Biotechnology, University of Münster, Münster 48143, Germany
- Institute of Plant Science and Resources, Okayama University, Kurashiki 710-0046, Japan
| | - Martin C Jonikas
- Department of Molecular Biology, Princeton University, Princeton, NJ 08540
- Howard Hughes Medical Institute, Chevy Chase, MD 20815
| | - Sabeeha Merchant
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095
| | - Masato Nakai
- Laboratory of Organelle Biology, Institute for Protein Research, Osaka University, Osaka 565-0871, Japan;
| | - Jean-David Rochaix
- Department of Molecular Biology, University of Geneva, Geneva CH-1211, Switzerland;
- Department of Plant Biology, University of Geneva, Geneva CH-1211, Switzerland
| | - Peter Walter
- Department of Biochemistry and Biophysics, University of California, San Francisco, CA 94143;
- Howard Hughes Medical Institute, Chevy Chase, MD 20815
| |
Collapse
|
6
|
Beaton A, Tucker N, Escalettes F, Magneschi L. Waste not, want not: enhancing the ability of yeast to utilise its own leftovers from the brewing industry to fuel the transport industry with ethanol. Access Microbiol 2019. [DOI: 10.1099/acmi.ac2019.po0412] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
|
7
|
Jouhet J, Lupette J, Clerc O, Magneschi L, Bedhomme M, Collin S, Roy S, Maréchal E, Rébeillé F. Correction: LC-MS/MS versus TLC plus GC methods: Consistency of glycerolipid and fatty acid profiles in microalgae and higher plant cells and effect of a nitrogen starvation. PLoS One 2018; 13:e0206397. [PMID: 30346991 PMCID: PMC6197656 DOI: 10.1371/journal.pone.0206397] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
|
8
|
Dolch LJ, Lupette J, Tourcier G, Bedhomme M, Collin S, Magneschi L, Conte M, Seddiki K, Richard C, Corre E, Fourage L, Laeuffer F, Richards R, Reith M, Rébeillé F, Jouhet J, McGinn P, Maréchal E. Nitric Oxide Mediates Nitrite-Sensing and Acclimation and Triggers a Remodeling of Lipids. Plant Physiol 2017; 175:1407-1423. [PMID: 28924015 PMCID: PMC5664477 DOI: 10.1104/pp.17.01042] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 09/13/2017] [Indexed: 05/20/2023]
Abstract
Nitric oxide (NO) is an intermediate of the nitrogen cycle, an industrial pollutant, and a marker of climate change. NO also acts as a gaseous transmitter in a variety of biological processes. The impact of environmental NO needs to be addressed. In diatoms, a dominant phylum in phytoplankton, NO was reported to mediate programmed cell death in response to diatom-derived polyunsaturated aldehydes. Here, using the Phaeodactylum Pt1 strain, 2E,4E-decadienal supplied in the micromolar concentration range led to a nonspecific cell toxicity. We reexamined NO biosynthesis and response in Phaeodactylum NO inhibits cell growth and triggers triacylglycerol (TAG) accumulation. Feeding experiments indicate that NO is not produced from Arg but via conversion of nitrite by the nitrate reductase. Genome-wide transcriptional analysis shows that NO up-regulates the expression of the plastid nitrite reductase and genes involved in the subsequent incorporation of ammonium into amino acids, via both Gln synthesis and Orn-urea pathway. The phosphoenolpyruvate dehydrogenase complex is also up-regulated, leading to the production of acetyl-CoA, which can feed TAG accumulation upon exposure to NO. Transcriptional reprogramming leading to higher TAG content is balanced with a decrease of monogalactosyldiacylglycerol (MGDG) in the plastid via posttranslational inhibition of MGDG synthase enzymatic activity by NO. Intracellular and transient NO emission acts therefore at the basis of a nitrite-sensing and acclimating system, whereas a long exposure to NO can additionally induce a redirection of carbon to neutral lipids and a stress response.
Collapse
Affiliation(s)
- Lina-Juana Dolch
- Laboratoire de Physiologie Cellulaire et Végétale, Unité mixte de recherche 5168 CNRS - CEA - INRA - Université Grenoble Alpes, Institut de Biosciences Biotechnologies de Grenoble, CEA Grenoble, 17 rue des Martyrs, 38054, Grenoble Cedex 9, France
| | - Josselin Lupette
- Laboratoire de Physiologie Cellulaire et Végétale, Unité mixte de recherche 5168 CNRS - CEA - INRA - Université Grenoble Alpes, Institut de Biosciences Biotechnologies de Grenoble, CEA Grenoble, 17 rue des Martyrs, 38054, Grenoble Cedex 9, France
| | - Guillaume Tourcier
- Laboratoire de Physiologie Cellulaire et Végétale, Unité mixte de recherche 5168 CNRS - CEA - INRA - Université Grenoble Alpes, Institut de Biosciences Biotechnologies de Grenoble, CEA Grenoble, 17 rue des Martyrs, 38054, Grenoble Cedex 9, France
| | - Mariette Bedhomme
- Laboratoire de Physiologie Cellulaire et Végétale, Unité mixte de recherche 5168 CNRS - CEA - INRA - Université Grenoble Alpes, Institut de Biosciences Biotechnologies de Grenoble, CEA Grenoble, 17 rue des Martyrs, 38054, Grenoble Cedex 9, France
- Total Refining Chemicals, Tour Michelet, 24 Cours Michelet - La Défense 10, 92069 Paris La Défense Cedex, France
| | - Séverine Collin
- Total Refining Chemicals, Tour Michelet, 24 Cours Michelet - La Défense 10, 92069 Paris La Défense Cedex, France
| | - Leonardo Magneschi
- Laboratoire de Physiologie Cellulaire et Végétale, Unité mixte de recherche 5168 CNRS - CEA - INRA - Université Grenoble Alpes, Institut de Biosciences Biotechnologies de Grenoble, CEA Grenoble, 17 rue des Martyrs, 38054, Grenoble Cedex 9, France
| | - Melissa Conte
- Laboratoire de Physiologie Cellulaire et Végétale, Unité mixte de recherche 5168 CNRS - CEA - INRA - Université Grenoble Alpes, Institut de Biosciences Biotechnologies de Grenoble, CEA Grenoble, 17 rue des Martyrs, 38054, Grenoble Cedex 9, France
| | - Khawla Seddiki
- Laboratoire de Physiologie Cellulaire et Végétale, Unité mixte de recherche 5168 CNRS - CEA - INRA - Université Grenoble Alpes, Institut de Biosciences Biotechnologies de Grenoble, CEA Grenoble, 17 rue des Martyrs, 38054, Grenoble Cedex 9, France
| | - Christelle Richard
- Laboratoire de Physiologie Cellulaire et Végétale, Unité mixte de recherche 5168 CNRS - CEA - INRA - Université Grenoble Alpes, Institut de Biosciences Biotechnologies de Grenoble, CEA Grenoble, 17 rue des Martyrs, 38054, Grenoble Cedex 9, France
| | - Erwan Corre
- Station Biologique de Roscoff, CNRS - Université Pierre et Marie Curie, Analyses and Bioinformatics for Marine Science, 29680 Roscoff, France
| | - Laurent Fourage
- Total Refining Chemicals, Tour Michelet, 24 Cours Michelet - La Défense 10, 92069 Paris La Défense Cedex, France
| | - Frédéric Laeuffer
- Total Refining Chemicals, Tour Michelet, 24 Cours Michelet - La Défense 10, 92069 Paris La Défense Cedex, France
| | - Robert Richards
- National Research Council of Canada, Aquatic and Crop Resource Development, 1411 Oxford Street, Halifax, Nova Scotia B3H3Z1, Canada
| | - Michael Reith
- National Research Council of Canada, Aquatic and Crop Resource Development, 1411 Oxford Street, Halifax, Nova Scotia B3H3Z1, Canada
| | - Fabrice Rébeillé
- Laboratoire de Physiologie Cellulaire et Végétale, Unité mixte de recherche 5168 CNRS - CEA - INRA - Université Grenoble Alpes, Institut de Biosciences Biotechnologies de Grenoble, CEA Grenoble, 17 rue des Martyrs, 38054, Grenoble Cedex 9, France
| | - Juliette Jouhet
- Laboratoire de Physiologie Cellulaire et Végétale, Unité mixte de recherche 5168 CNRS - CEA - INRA - Université Grenoble Alpes, Institut de Biosciences Biotechnologies de Grenoble, CEA Grenoble, 17 rue des Martyrs, 38054, Grenoble Cedex 9, France
| | - Patrick McGinn
- National Research Council of Canada, Aquatic and Crop Resource Development, 1411 Oxford Street, Halifax, Nova Scotia B3H3Z1, Canada
| | - Eric Maréchal
- Laboratoire de Physiologie Cellulaire et Végétale, Unité mixte de recherche 5168 CNRS - CEA - INRA - Université Grenoble Alpes, Institut de Biosciences Biotechnologies de Grenoble, CEA Grenoble, 17 rue des Martyrs, 38054, Grenoble Cedex 9, France
| |
Collapse
|
9
|
Jouhet J, Lupette J, Clerc O, Magneschi L, Bedhomme M, Collin S, Roy S, Maréchal E, Rébeillé F. LC-MS/MS versus TLC plus GC methods: Consistency of glycerolipid and fatty acid profiles in microalgae and higher plant cells and effect of a nitrogen starvation. PLoS One 2017; 12:e0182423. [PMID: 28771624 PMCID: PMC5542700 DOI: 10.1371/journal.pone.0182423] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 07/18/2017] [Indexed: 11/18/2022] Open
Abstract
Methods to analyze lipidomes have considerably evolved, more and more based on mass spectrometry technics (LC-MS/MS). However, accurate quantifications using these methods require 13C-labeled standards for each lipid, which is not feasible because of the very large number of molecules. Thus, quantifications rely on standard molecules representative of a whole class of lipids, which might lead to false estimations of some molecular species. Here, we determined and compared glycerolipid distributions from three different types of cells, two microalgae (Phaeodactylum tricornutum, Nannochloropsis gaditana) and one higher plant (Arabidopsis thaliana), using either LC-MS/MS or Thin Layer Chromatography coupled with Gas Chromatography (TLC-GC), this last approach relying on the precise quantification of the fatty acids present in each glycerolipid class. Our results showed that the glycerolipid distribution was significantly different depending on the method used. How can one reconcile these two analytical methods? Here we propose that the possible bias with MS data can be circumvented by systematically running in tandem with the sample to be analyzed a lipid extract from a qualified control (QC) of each type of cells, previously analyzed by TLC-GC, and used as an external standard to quantify the MS results. As a case study, we applied this method to compare the impact of a nitrogen deficiency on the three types of cells.
Collapse
Affiliation(s)
- Juliette Jouhet
- Laboratoire de Physiologie Cellulaire Végétale, Unité mixte de recherche 5168 CNRS - CEA - INRA - Université Grenoble Alpes, Bioscience and Biotechnologies Institute of Grenoble, CEA Grenoble, Grenoble, France
| | - Josselin Lupette
- Laboratoire de Physiologie Cellulaire Végétale, Unité mixte de recherche 5168 CNRS - CEA - INRA - Université Grenoble Alpes, Bioscience and Biotechnologies Institute of Grenoble, CEA Grenoble, Grenoble, France
| | - Olivier Clerc
- Laboratoire de Physiologie Cellulaire Végétale, Unité mixte de recherche 5168 CNRS - CEA - INRA - Université Grenoble Alpes, Bioscience and Biotechnologies Institute of Grenoble, CEA Grenoble, Grenoble, France
| | - Leonardo Magneschi
- Laboratoire de Physiologie Cellulaire Végétale, Unité mixte de recherche 5168 CNRS - CEA - INRA - Université Grenoble Alpes, Bioscience and Biotechnologies Institute of Grenoble, CEA Grenoble, Grenoble, France
| | - Mariette Bedhomme
- Laboratoire de Physiologie Cellulaire Végétale, Unité mixte de recherche 5168 CNRS - CEA - INRA - Université Grenoble Alpes, Bioscience and Biotechnologies Institute of Grenoble, CEA Grenoble, Grenoble, France
| | - Séverine Collin
- Laboratoire de Physiologie Cellulaire Végétale, Unité mixte de recherche 5168 CNRS - CEA - INRA - Université Grenoble Alpes, Bioscience and Biotechnologies Institute of Grenoble, CEA Grenoble, Grenoble, France
| | - Sylvaine Roy
- Laboratoire de Physiologie Cellulaire Végétale, Unité mixte de recherche 5168 CNRS - CEA - INRA - Université Grenoble Alpes, Bioscience and Biotechnologies Institute of Grenoble, CEA Grenoble, Grenoble, France
| | - Eric Maréchal
- Laboratoire de Physiologie Cellulaire Végétale, Unité mixte de recherche 5168 CNRS - CEA - INRA - Université Grenoble Alpes, Bioscience and Biotechnologies Institute of Grenoble, CEA Grenoble, Grenoble, France
| | - Fabrice Rébeillé
- Laboratoire de Physiologie Cellulaire Végétale, Unité mixte de recherche 5168 CNRS - CEA - INRA - Université Grenoble Alpes, Bioscience and Biotechnologies Institute of Grenoble, CEA Grenoble, Grenoble, France
- * E-mail:
| |
Collapse
|
10
|
Curien G, Flori S, Villanova V, Magneschi L, Giustini C, Forti G, Matringe M, Petroutsos D, Kuntz M, Finazzi G. The Water to Water Cycles in Microalgae. Plant Cell Physiol 2016; 57:1354-1363. [PMID: 26955846 DOI: 10.1093/pcp/pcw048] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 02/23/2016] [Indexed: 05/28/2023]
Abstract
In oxygenic photosynthesis, light produces ATP plus NADPH via linear electron transfer, i.e. the in-series activity of the two photosystems: PSI and PSII. This process, however, is thought not to be sufficient to provide enough ATP per NADPH for carbon assimilation in the Calvin-Benson-Bassham cycle. Thus, it is assumed that additional ATP can be generated by alternative electron pathways. These circuits produce an electrochemical proton gradient without NADPH synthesis, and, although they often represent a small proportion of the linear electron flow, they could have a huge importance in optimizing CO2 assimilation. In Viridiplantae, there is a consensus that alternative electron flow comprises cyclic electron flow around PSI and the water to water cycles. The latter processes include photosynthetic O2 reduction via the Mehler reaction at PSI, the plastoquinone terminal oxidase downstream of PSII, photorespiration (the oxygenase activity of Rubisco) and the export of reducing equivalents towards the mitochondrial oxidases, through the malate shuttle. In this review, we summarize current knowledge about the role of the water to water cycles in photosynthesis, with a special focus on their occurrence and physiological roles in microalgae.
Collapse
Affiliation(s)
- Gilles Curien
- Laboratoire de Physiologie Cellulaire et Végétale, UMR 5168, Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'Energie Atomique-Université Grenoble Alpes, UMR 1414 Institut National de la Recherche Agronomique (INRA) Biosciences and Biotechnology Institute of Grenoble (BIG), Commissariat à l'Energie Atomique (CEA) Grenoble, 38054 Grenoble cedex 9, France
| | - Serena Flori
- Laboratoire de Physiologie Cellulaire et Végétale, UMR 5168, Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'Energie Atomique-Université Grenoble Alpes, UMR 1414 Institut National de la Recherche Agronomique (INRA) Biosciences and Biotechnology Institute of Grenoble (BIG), Commissariat à l'Energie Atomique (CEA) Grenoble, 38054 Grenoble cedex 9, France
| | | | - Leonardo Magneschi
- Laboratoire de Physiologie Cellulaire et Végétale, UMR 5168, Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'Energie Atomique-Université Grenoble Alpes, UMR 1414 Institut National de la Recherche Agronomique (INRA) Biosciences and Biotechnology Institute of Grenoble (BIG), Commissariat à l'Energie Atomique (CEA) Grenoble, 38054 Grenoble cedex 9, France
| | - Cécile Giustini
- Laboratoire de Physiologie Cellulaire et Végétale, UMR 5168, Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'Energie Atomique-Université Grenoble Alpes, UMR 1414 Institut National de la Recherche Agronomique (INRA) Biosciences and Biotechnology Institute of Grenoble (BIG), Commissariat à l'Energie Atomique (CEA) Grenoble, 38054 Grenoble cedex 9, France
| | - Giorgio Forti
- Istituto di Biofisica, Consiglio Nazionale delle Ricerche, Università degli Studi di Milano, Via Celoria 26, 20133 Milan, Italy
| | - Michel Matringe
- Laboratoire de Physiologie Cellulaire et Végétale, UMR 5168, Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'Energie Atomique-Université Grenoble Alpes, UMR 1414 Institut National de la Recherche Agronomique (INRA) Biosciences and Biotechnology Institute of Grenoble (BIG), Commissariat à l'Energie Atomique (CEA) Grenoble, 38054 Grenoble cedex 9, France
| | - Dimitris Petroutsos
- Laboratoire de Physiologie Cellulaire et Végétale, UMR 5168, Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'Energie Atomique-Université Grenoble Alpes, UMR 1414 Institut National de la Recherche Agronomique (INRA) Biosciences and Biotechnology Institute of Grenoble (BIG), Commissariat à l'Energie Atomique (CEA) Grenoble, 38054 Grenoble cedex 9, France
| | - Marcel Kuntz
- Laboratoire de Physiologie Cellulaire et Végétale, UMR 5168, Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'Energie Atomique-Université Grenoble Alpes, UMR 1414 Institut National de la Recherche Agronomique (INRA) Biosciences and Biotechnology Institute of Grenoble (BIG), Commissariat à l'Energie Atomique (CEA) Grenoble, 38054 Grenoble cedex 9, France
| | - Giovanni Finazzi
- Laboratoire de Physiologie Cellulaire et Végétale, UMR 5168, Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'Energie Atomique-Université Grenoble Alpes, UMR 1414 Institut National de la Recherche Agronomique (INRA) Biosciences and Biotechnology Institute of Grenoble (BIG), Commissariat à l'Energie Atomique (CEA) Grenoble, 38054 Grenoble cedex 9, France
| |
Collapse
|
11
|
Steinbeck J, Nikolova D, Weingarten R, Johnson X, Richaud P, Peltier G, Hermann M, Magneschi L, Hippler M. Deletion of Proton Gradient Regulation 5 (PGR5) and PGR5-Like 1 (PGRL1) proteins promote sustainable light-driven hydrogen production in Chlamydomonas reinhardtii due to increased PSII activity under sulfur deprivation. Front Plant Sci 2015; 6:892. [PMID: 26579146 PMCID: PMC4621405 DOI: 10.3389/fpls.2015.00892] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 10/07/2015] [Indexed: 05/19/2023]
Abstract
Continuous hydrogen photo-production under sulfur deprivation was studied in the Chlamydomonas reinhardtii pgr5 pgrl1 double mutant and respective single mutants. Under medium light conditions, the pgr5 exhibited the highest performance and produced about eight times more hydrogen than the wild type, making pgr5 one of the most efficient hydrogen producer reported so far. The pgr5 pgrl1 double mutant showed an increased hydrogen burst at the beginning of sulfur deprivation under high light conditions, but in this case the overall amount of hydrogen produced by pgr5 pgrl1 as well as pgr5 was diminished due to photo-inhibition and increased degradation of PSI. In contrast, the pgrl1 was effective in hydrogen production in both high and low light. Blocking photosynthetic electron transfer by DCMU stopped hydrogen production almost completely in the mutant strains, indicating that the main pathway of electrons toward enhanced hydrogen production is via linear electron transport. Indeed, PSII remained more active and stable in the pgr mutant strains as compared to the wild type. Since transition to anaerobiosis was faster and could be maintained due to an increased oxygen consumption capacity, this likely preserves PSII from photo-oxidative damage in the pgr mutants. Hence, we conclude that increased hydrogen production under sulfur deprivation in the pgr5 and pgrl1 mutants is caused by an increased stability of PSII permitting sustainable light-driven hydrogen production in Chlamydomonas reinhardtii.
Collapse
Affiliation(s)
- Janina Steinbeck
- Institute of Plant Biology and Biotechnology, University of MünsterMünster, Germany
| | - Denitsa Nikolova
- Institute of Plant Biology and Biotechnology, University of MünsterMünster, Germany
| | - Robert Weingarten
- Institute of Plant Biology and Biotechnology, University of MünsterMünster, Germany
| | - Xenie Johnson
- Laboratoire de Bioénergétique et Biotechnologie des Bactéries et Microalgues, Institut de Biologie Environnementale et de Biotechnologie, Direction des Sciences du Vivant, Commissariat à l’Energie Atomique et aux Energies AlternativesSaint-Paul-lez-Durance, France
- CNRS, UMR 7265, Biologie Végétale et Microbiologie EnvironnementaleSaint-Paul-lez-Durance, France
- Laboratoire de Bioénergétique et Biotechnologie des Bactéries et Microalgues, Aix Marseille UniversitéSaint-Paul-lez-Durance, France
| | - Pierre Richaud
- Laboratoire de Bioénergétique et Biotechnologie des Bactéries et Microalgues, Institut de Biologie Environnementale et de Biotechnologie, Direction des Sciences du Vivant, Commissariat à l’Energie Atomique et aux Energies AlternativesSaint-Paul-lez-Durance, France
- CNRS, UMR 7265, Biologie Végétale et Microbiologie EnvironnementaleSaint-Paul-lez-Durance, France
- Laboratoire de Bioénergétique et Biotechnologie des Bactéries et Microalgues, Aix Marseille UniversitéSaint-Paul-lez-Durance, France
| | - Gilles Peltier
- Laboratoire de Bioénergétique et Biotechnologie des Bactéries et Microalgues, Institut de Biologie Environnementale et de Biotechnologie, Direction des Sciences du Vivant, Commissariat à l’Energie Atomique et aux Energies AlternativesSaint-Paul-lez-Durance, France
- CNRS, UMR 7265, Biologie Végétale et Microbiologie EnvironnementaleSaint-Paul-lez-Durance, France
- Laboratoire de Bioénergétique et Biotechnologie des Bactéries et Microalgues, Aix Marseille UniversitéSaint-Paul-lez-Durance, France
| | - Marita Hermann
- Institute of Plant Biology and Biotechnology, University of MünsterMünster, Germany
| | - Leonardo Magneschi
- Institute of Plant Biology and Biotechnology, University of MünsterMünster, Germany
| | - Michael Hippler
- Institute of Plant Biology and Biotechnology, University of MünsterMünster, Germany
- *Correspondence: Michael Hippler,
| |
Collapse
|
12
|
Kukuczka B, Magneschi L, Petroutsos D, Steinbeck J, Bald T, Powikrowska M, Fufezan C, Finazzi G, Hippler M. Proton Gradient Regulation5-Like1-Mediated Cyclic Electron Flow Is Crucial for Acclimation to Anoxia and Complementary to Nonphotochemical Quenching in Stress Adaptation. Plant Physiol 2014; 165:1604-1617. [PMID: 24948831 PMCID: PMC4119042 DOI: 10.1104/pp.114.240648] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
To investigate the functional importance of Proton Gradient Regulation5-Like1 (PGRL1) for photosynthetic performances in the moss Physcomitrella patens, we generated a pgrl1 knockout mutant. Functional analysis revealed diminished nonphotochemical quenching (NPQ) as well as decreased capacity for cyclic electron flow (CEF) in pgrl1. Under anoxia, where CEF is induced, quantitative proteomics evidenced severe down-regulation of photosystems but up-regulation of the chloroplast NADH dehydrogenase complex, plastocyanin, and Ca2+ sensors in the mutant, indicating that the absence of PGRL1 triggered a mechanism compensatory for diminished CEF. On the other hand, proteins required for NPQ, such as light-harvesting complex stress-related protein1 (LHCSR1), violaxanthin de-epoxidase, and PSII subunit S, remained stable. To further investigate the interrelation between CEF and NPQ, we generated a pgrl1 npq4 double mutant in the green alga Chlamydomonas reinhardtii lacking both PGRL1 and LHCSR3 expression. Phenotypic comparative analyses of this double mutant, together with the single knockout strains and with the P. patens pgrl1, demonstrated that PGRL1 is crucial for acclimation to high light and anoxia in both organisms. Moreover, the data generated for the C. reinhardtii double mutant clearly showed a complementary role of PGRL1 and LHCSR3 in managing high light stress response. We conclude that both proteins are needed for photoprotection and for survival under low oxygen, underpinning a tight link between CEF and NPQ in oxygenic photosynthesis. Given the complementarity of the energy-dependent component of NPQ (qE) and PGRL1-mediated CEF, we suggest that PGRL1 is a capacitor linked to the evolution of the PSII subunit S-dependent qE in terrestrial plants.
Collapse
Affiliation(s)
- Bernadeta Kukuczka
- Institute of Plant Biology and Biotechnology, University of Münster, 48143 Muenster, Germany (B.K., L.M., D.P., J.S., T.B., C.F., M.H.);Centre National Recherche Scientifique, Unité Mixte Recherche 5168, Laboratoire Physiologie Cellulaire et Végétale, F-38054 Grenoble, France (D.P., G.F.);Commissariat à l'Energie Atomique et Energies Alternatives, l'Institut de Recherches en Technologies et Sciences pour le Vivant, F-38054 Grenoble, France (D.P., G.F.);Institut National Recherche Agronomique, Unité Mixte Recherche 1200, F-38054 Grenoble, France (D.P., G.F.);Université Grenoble Alpes, F-38041 Grenoble, France (D.P., G.F.); andDepartment of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg C 1871, Denmark (M.P.)
| | - Leonardo Magneschi
- Institute of Plant Biology and Biotechnology, University of Münster, 48143 Muenster, Germany (B.K., L.M., D.P., J.S., T.B., C.F., M.H.);Centre National Recherche Scientifique, Unité Mixte Recherche 5168, Laboratoire Physiologie Cellulaire et Végétale, F-38054 Grenoble, France (D.P., G.F.);Commissariat à l'Energie Atomique et Energies Alternatives, l'Institut de Recherches en Technologies et Sciences pour le Vivant, F-38054 Grenoble, France (D.P., G.F.);Institut National Recherche Agronomique, Unité Mixte Recherche 1200, F-38054 Grenoble, France (D.P., G.F.);Université Grenoble Alpes, F-38041 Grenoble, France (D.P., G.F.); andDepartment of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg C 1871, Denmark (M.P.)
| | - Dimitris Petroutsos
- Institute of Plant Biology and Biotechnology, University of Münster, 48143 Muenster, Germany (B.K., L.M., D.P., J.S., T.B., C.F., M.H.);Centre National Recherche Scientifique, Unité Mixte Recherche 5168, Laboratoire Physiologie Cellulaire et Végétale, F-38054 Grenoble, France (D.P., G.F.);Commissariat à l'Energie Atomique et Energies Alternatives, l'Institut de Recherches en Technologies et Sciences pour le Vivant, F-38054 Grenoble, France (D.P., G.F.);Institut National Recherche Agronomique, Unité Mixte Recherche 1200, F-38054 Grenoble, France (D.P., G.F.);Université Grenoble Alpes, F-38041 Grenoble, France (D.P., G.F.); andDepartment of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg C 1871, Denmark (M.P.)
| | - Janina Steinbeck
- Institute of Plant Biology and Biotechnology, University of Münster, 48143 Muenster, Germany (B.K., L.M., D.P., J.S., T.B., C.F., M.H.);Centre National Recherche Scientifique, Unité Mixte Recherche 5168, Laboratoire Physiologie Cellulaire et Végétale, F-38054 Grenoble, France (D.P., G.F.);Commissariat à l'Energie Atomique et Energies Alternatives, l'Institut de Recherches en Technologies et Sciences pour le Vivant, F-38054 Grenoble, France (D.P., G.F.);Institut National Recherche Agronomique, Unité Mixte Recherche 1200, F-38054 Grenoble, France (D.P., G.F.);Université Grenoble Alpes, F-38041 Grenoble, France (D.P., G.F.); andDepartment of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg C 1871, Denmark (M.P.)
| | - Till Bald
- Institute of Plant Biology and Biotechnology, University of Münster, 48143 Muenster, Germany (B.K., L.M., D.P., J.S., T.B., C.F., M.H.);Centre National Recherche Scientifique, Unité Mixte Recherche 5168, Laboratoire Physiologie Cellulaire et Végétale, F-38054 Grenoble, France (D.P., G.F.);Commissariat à l'Energie Atomique et Energies Alternatives, l'Institut de Recherches en Technologies et Sciences pour le Vivant, F-38054 Grenoble, France (D.P., G.F.);Institut National Recherche Agronomique, Unité Mixte Recherche 1200, F-38054 Grenoble, France (D.P., G.F.);Université Grenoble Alpes, F-38041 Grenoble, France (D.P., G.F.); andDepartment of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg C 1871, Denmark (M.P.)
| | - Marta Powikrowska
- Institute of Plant Biology and Biotechnology, University of Münster, 48143 Muenster, Germany (B.K., L.M., D.P., J.S., T.B., C.F., M.H.);Centre National Recherche Scientifique, Unité Mixte Recherche 5168, Laboratoire Physiologie Cellulaire et Végétale, F-38054 Grenoble, France (D.P., G.F.);Commissariat à l'Energie Atomique et Energies Alternatives, l'Institut de Recherches en Technologies et Sciences pour le Vivant, F-38054 Grenoble, France (D.P., G.F.);Institut National Recherche Agronomique, Unité Mixte Recherche 1200, F-38054 Grenoble, France (D.P., G.F.);Université Grenoble Alpes, F-38041 Grenoble, France (D.P., G.F.); andDepartment of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg C 1871, Denmark (M.P.)
| | - Christian Fufezan
- Institute of Plant Biology and Biotechnology, University of Münster, 48143 Muenster, Germany (B.K., L.M., D.P., J.S., T.B., C.F., M.H.);Centre National Recherche Scientifique, Unité Mixte Recherche 5168, Laboratoire Physiologie Cellulaire et Végétale, F-38054 Grenoble, France (D.P., G.F.);Commissariat à l'Energie Atomique et Energies Alternatives, l'Institut de Recherches en Technologies et Sciences pour le Vivant, F-38054 Grenoble, France (D.P., G.F.);Institut National Recherche Agronomique, Unité Mixte Recherche 1200, F-38054 Grenoble, France (D.P., G.F.);Université Grenoble Alpes, F-38041 Grenoble, France (D.P., G.F.); andDepartment of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg C 1871, Denmark (M.P.)
| | - Giovanni Finazzi
- Institute of Plant Biology and Biotechnology, University of Münster, 48143 Muenster, Germany (B.K., L.M., D.P., J.S., T.B., C.F., M.H.);Centre National Recherche Scientifique, Unité Mixte Recherche 5168, Laboratoire Physiologie Cellulaire et Végétale, F-38054 Grenoble, France (D.P., G.F.);Commissariat à l'Energie Atomique et Energies Alternatives, l'Institut de Recherches en Technologies et Sciences pour le Vivant, F-38054 Grenoble, France (D.P., G.F.);Institut National Recherche Agronomique, Unité Mixte Recherche 1200, F-38054 Grenoble, France (D.P., G.F.);Université Grenoble Alpes, F-38041 Grenoble, France (D.P., G.F.); andDepartment of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg C 1871, Denmark (M.P.)
| | - Michael Hippler
- Institute of Plant Biology and Biotechnology, University of Münster, 48143 Muenster, Germany (B.K., L.M., D.P., J.S., T.B., C.F., M.H.);Centre National Recherche Scientifique, Unité Mixte Recherche 5168, Laboratoire Physiologie Cellulaire et Végétale, F-38054 Grenoble, France (D.P., G.F.);Commissariat à l'Energie Atomique et Energies Alternatives, l'Institut de Recherches en Technologies et Sciences pour le Vivant, F-38054 Grenoble, France (D.P., G.F.);Institut National Recherche Agronomique, Unité Mixte Recherche 1200, F-38054 Grenoble, France (D.P., G.F.);Université Grenoble Alpes, F-38041 Grenoble, France (D.P., G.F.); andDepartment of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, Frederiksberg C 1871, Denmark (M.P.)
| |
Collapse
|
13
|
Höhner R, Barth J, Magneschi L, Jaeger D, Niehues A, Bald T, Grossman A, Fufezan C, Hippler M. The metabolic status drives acclimation of iron deficiency responses in Chlamydomonas reinhardtii as revealed by proteomics based hierarchical clustering and reverse genetics. Mol Cell Proteomics 2013; 12:2774-90. [PMID: 23820728 PMCID: PMC3790290 DOI: 10.1074/mcp.m113.029991] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 06/04/2013] [Indexed: 11/06/2022] Open
Abstract
Iron is a crucial cofactor in numerous redox-active proteins operating in bioenergetic pathways including respiration and photosynthesis. Cellular iron management is essential to sustain sufficient energy production and minimize oxidative stress. To produce energy for cell growth, the green alga Chlamydomonas reinhardtii possesses the metabolic flexibility to use light and/or carbon sources such as acetate. To investigate the interplay between the iron-deficiency response and growth requirements under distinct trophic conditions, we took a quantitative proteomics approach coupled to innovative hierarchical clustering using different "distance-linkage combinations" and random noise injection. Protein co-expression analyses of the combined data sets revealed insights into cellular responses governing acclimation to iron deprivation and regulation associated with photosynthesis dependent growth. Photoautotrophic growth requirements as well as the iron deficiency induced specific metabolic enzymes and stress related proteins, and yet differences in the set of induced enzymes, proteases, and redox-related polypeptides were evident, implying the establishment of distinct response networks under the different conditions. Moreover, our data clearly support the notion that the iron deficiency response includes a hierarchy for iron allocation within organelles in C. reinhardtii. Importantly, deletion of a bifunctional alcohol and acetaldehyde dehydrogenase (ADH1), which is induced under low iron based on the proteomic data, attenuates the remodeling of the photosynthetic machinery in response to iron deficiency, and at the same time stimulates expression of stress-related proteins such as NDA2, LHCSR3, and PGRL1. This finding provides evidence that the coordinated regulation of bioenergetics pathways and iron deficiency response is sensitive to the cellular and chloroplast metabolic and/or redox status, consistent with systems approach data.
Collapse
Affiliation(s)
- Ricarda Höhner
- From the ‡Institute of Plant Biology and Biotechnology, University of Münster, Schlossplatz 8, Münster 48143, Germany
| | - Johannes Barth
- From the ‡Institute of Plant Biology and Biotechnology, University of Münster, Schlossplatz 8, Münster 48143, Germany
| | - Leonardo Magneschi
- From the ‡Institute of Plant Biology and Biotechnology, University of Münster, Schlossplatz 8, Münster 48143, Germany
| | - Daniel Jaeger
- From the ‡Institute of Plant Biology and Biotechnology, University of Münster, Schlossplatz 8, Münster 48143, Germany
| | - Anna Niehues
- From the ‡Institute of Plant Biology and Biotechnology, University of Münster, Schlossplatz 8, Münster 48143, Germany
| | - Till Bald
- From the ‡Institute of Plant Biology and Biotechnology, University of Münster, Schlossplatz 8, Münster 48143, Germany
| | - Arthur Grossman
- §Department of Plant Biology, Carnegie Institution for Science, Stanford, California 94305
| | - Christian Fufezan
- From the ‡Institute of Plant Biology and Biotechnology, University of Münster, Schlossplatz 8, Münster 48143, Germany
| | - Michael Hippler
- From the ‡Institute of Plant Biology and Biotechnology, University of Münster, Schlossplatz 8, Münster 48143, Germany
| |
Collapse
|
14
|
Banti V, Giuntoli B, Gonzali S, Loreti E, Magneschi L, Novi G, Paparelli E, Parlanti S, Pucciariello C, Santaniello A, Perata P. Low oxygen response mechanisms in green organisms. Int J Mol Sci 2013; 14:4734-61. [PMID: 23446868 PMCID: PMC3634410 DOI: 10.3390/ijms14034734] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Revised: 02/20/2013] [Accepted: 02/21/2013] [Indexed: 01/04/2023] Open
Abstract
Low oxygen stress often occurs during the life of green organisms, mostly due to the environmental conditions affecting oxygen availability. Both plants and algae respond to low oxygen by resetting their metabolism. The shift from mitochondrial respiration to fermentation is the hallmark of anaerobic metabolism in most organisms. This involves a modified carbohydrate metabolism coupled with glycolysis and fermentation. For a coordinated response to low oxygen, plants exploit various molecular mechanisms to sense when oxygen is either absent or in limited amounts. In Arabidopsis thaliana, a direct oxygen sensing system has recently been discovered, where a conserved N-terminal motif on some ethylene responsive factors (ERFs), targets the fate of the protein under normoxia/hypoxia. In Oryza sativa, this same group of ERFs drives physiological and anatomical modifications that vary in relation to the genotype studied. The microalga Chlamydomonas reinhardtii responses to low oxygen seem to have evolved independently of higher plants, posing questions on how the fermentative metabolism is modulated. In this review, we summarize the most recent findings related to these topics, highlighting promising developments for the future.
Collapse
Affiliation(s)
- Valeria Banti
- PlantLab, Institute of Life Sciences, Scuola Superiore Sant’Anna, Via Mariscoglio 34, Pisa 56124, Italy; E-Mails: (V.B.); (B.G.); (S.G.); (G.N.); (E.P.); (S.P.); (C.P.); (A.S.)
| | - Beatrice Giuntoli
- PlantLab, Institute of Life Sciences, Scuola Superiore Sant’Anna, Via Mariscoglio 34, Pisa 56124, Italy; E-Mails: (V.B.); (B.G.); (S.G.); (G.N.); (E.P.); (S.P.); (C.P.); (A.S.)
| | - Silvia Gonzali
- PlantLab, Institute of Life Sciences, Scuola Superiore Sant’Anna, Via Mariscoglio 34, Pisa 56124, Italy; E-Mails: (V.B.); (B.G.); (S.G.); (G.N.); (E.P.); (S.P.); (C.P.); (A.S.)
| | - Elena Loreti
- Institute of Agricultural Biology and Biotechnology, National Research Council, Via Moruzzi 1, Pisa 56100, Italy; E-Mail:
| | - Leonardo Magneschi
- Institute of Plant Biochemistry and Biotechnology, University of Münster, Schlossplatz 8, Münster 48143, Germany; E-Mail:
| | - Giacomo Novi
- PlantLab, Institute of Life Sciences, Scuola Superiore Sant’Anna, Via Mariscoglio 34, Pisa 56124, Italy; E-Mails: (V.B.); (B.G.); (S.G.); (G.N.); (E.P.); (S.P.); (C.P.); (A.S.)
| | - Eleonora Paparelli
- PlantLab, Institute of Life Sciences, Scuola Superiore Sant’Anna, Via Mariscoglio 34, Pisa 56124, Italy; E-Mails: (V.B.); (B.G.); (S.G.); (G.N.); (E.P.); (S.P.); (C.P.); (A.S.)
| | - Sandro Parlanti
- PlantLab, Institute of Life Sciences, Scuola Superiore Sant’Anna, Via Mariscoglio 34, Pisa 56124, Italy; E-Mails: (V.B.); (B.G.); (S.G.); (G.N.); (E.P.); (S.P.); (C.P.); (A.S.)
| | - Chiara Pucciariello
- PlantLab, Institute of Life Sciences, Scuola Superiore Sant’Anna, Via Mariscoglio 34, Pisa 56124, Italy; E-Mails: (V.B.); (B.G.); (S.G.); (G.N.); (E.P.); (S.P.); (C.P.); (A.S.)
| | - Antonietta Santaniello
- PlantLab, Institute of Life Sciences, Scuola Superiore Sant’Anna, Via Mariscoglio 34, Pisa 56124, Italy; E-Mails: (V.B.); (B.G.); (S.G.); (G.N.); (E.P.); (S.P.); (C.P.); (A.S.)
| | - Pierdomenico Perata
- PlantLab, Institute of Life Sciences, Scuola Superiore Sant’Anna, Via Mariscoglio 34, Pisa 56124, Italy; E-Mails: (V.B.); (B.G.); (S.G.); (G.N.); (E.P.); (S.P.); (C.P.); (A.S.)
| |
Collapse
|
15
|
Magneschi L, Catalanotti C, Subramanian V, Dubini A, Yang W, Mus F, Posewitz MC, Seibert M, Perata P, Grossman AR. A mutant in the ADH1 gene of Chlamydomonas reinhardtii elicits metabolic restructuring during anaerobiosis. Plant Physiol 2012; 158:1293-305. [PMID: 22271746 PMCID: PMC3291268 DOI: 10.1104/pp.111.191569] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2011] [Accepted: 01/21/2012] [Indexed: 05/20/2023]
Abstract
The green alga Chlamydomonas reinhardtii has numerous genes encoding enzymes that function in fermentative pathways. Among these, the bifunctional alcohol/acetaldehyde dehydrogenase (ADH1), highly homologous to the Escherichia coli AdhE enzyme, is proposed to be a key component of fermentative metabolism. To investigate the physiological role of ADH1 in dark anoxic metabolism, a Chlamydomonas adh1 mutant was generated. We detected no ethanol synthesis in this mutant when it was placed under anoxia; the two other ADH homologs encoded on the Chlamydomonas genome do not appear to participate in ethanol production under our experimental conditions. Pyruvate formate lyase, acetate kinase, and hydrogenase protein levels were similar in wild-type cells and the adh1 mutant, while the mutant had significantly more pyruvate:ferredoxin oxidoreductase. Furthermore, a marked change in metabolite levels (in addition to ethanol) synthesized by the mutant under anoxic conditions was observed; formate levels were reduced, acetate levels were elevated, and the production of CO(2) was significantly reduced, but fermentative H(2) production was unchanged relative to wild-type cells. Of particular interest is the finding that the mutant accumulates high levels of extracellular glycerol, which requires NADH as a substrate for its synthesis. Lactate production is also increased slightly in the mutant relative to the control strain. These findings demonstrate a restructuring of fermentative metabolism in the adh1 mutant in a way that sustains the recycling (oxidation) of NADH and the survival of the mutant (similar to wild-type cell survival) during dark anoxic growth.
Collapse
Affiliation(s)
- Leonardo Magneschi
- Department of Plant Biology, Carnegie Institution for Science, Stanford, California 94305, USA.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
16
|
Catalanotti C, Dubini A, Subramanian V, Yang W, Magneschi L, Mus F, Seibert M, Posewitz MC, Grossman AR. Altered fermentative metabolism in Chlamydomonas reinhardtii mutants lacking pyruvate formate lyase and both pyruvate formate lyase and alcohol dehydrogenase. Plant Cell 2012; 24:692-707. [PMID: 22353371 PMCID: PMC3315241 DOI: 10.1105/tpc.111.093146] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2011] [Revised: 01/05/2012] [Accepted: 01/25/2012] [Indexed: 05/20/2023]
Abstract
Chlamydomonas reinhardtii, a unicellular green alga, often experiences hypoxic/anoxic soil conditions that activate fermentation metabolism. We isolated three Chlamydomonas mutants disrupted for the pyruvate formate lyase (PFL1) gene; the encoded PFL1 protein catalyzes a major fermentative pathway in wild-type Chlamydomonas cells. When the pfl1 mutants were subjected to dark fermentative conditions, they displayed an increased flux of pyruvate to lactate, elevated pyruvate decarboxylation, ethanol accumulation, diminished pyruvate oxidation by pyruvate ferredoxin oxidoreductase, and lowered H(2) production. The pfl1-1 mutant also accumulated high intracellular levels of lactate, succinate, alanine, malate, and fumarate. To further probe the system, we generated a double mutant (pfl1-1 adh1) that is unable to synthesize both formate and ethanol. This strain, like the pfl1 mutants, secreted lactate, but it also exhibited a significant increase in the levels of extracellular glycerol, acetate, and intracellular reduced sugars and a decrease in dark, fermentative H(2) production. Whereas wild-type Chlamydomonas fermentation primarily produces formate and ethanol, the double mutant reroutes glycolytic carbon to lactate and glycerol. Although the metabolic adjustments observed in the mutants facilitate NADH reoxidation and sustained glycolysis under dark, anoxic conditions, the observed changes could not have been predicted given our current knowledge of the regulation of fermentation metabolism.
Collapse
Affiliation(s)
- Claudia Catalanotti
- Department of Plant Biology, Carnegie Institution for Science, Stanford, California 94305, USA.
| | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Gonzalez-Ballester D, Pootakham W, Mus F, Yang W, Catalanotti C, Magneschi L, de Montaigu A, Higuera JJ, Prior M, Galván A, Fernandez E, Grossman AR. Reverse genetics in Chlamydomonas: a platform for isolating insertional mutants. Plant Methods 2011; 7:24. [PMID: 21794168 PMCID: PMC3161022 DOI: 10.1186/1746-4811-7-24] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2011] [Accepted: 07/27/2011] [Indexed: 05/03/2023]
Abstract
A method was developed to identify insertional mutants of Chlamydomonas reinhardtii disrupted for selected target genes. The approach relies on the generation of thousands of transformants followed by PCR-based screenings that allow for identification of strains harboring the introduced marker gene within specific genes of interest. Our results highlight the strengths and limitations of two independent screens that differed in the nature of the marker DNA used (PCR-amplified fragment containing the plasmid-free marker versus entire linearized plasmid with the marker) and in the strategies used to maintain and store transformants.
Collapse
Affiliation(s)
- David Gonzalez-Ballester
- Department of Plant Biology, The Carnegie Institution for Science, Stanford, CA 94305, USA
- Departamento de Bioquímica y Biología Molecular, Universidad de Córdoba, Córdoba 14071, Spain
| | - Wirulda Pootakham
- Department of Plant Biology, The Carnegie Institution for Science, Stanford, CA 94305, USA
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency, Pathumthani, 12120, Thailand
| | - Florence Mus
- Department of Plant Biology, The Carnegie Institution for Science, Stanford, CA 94305, USA
- Montana State University, Department of Chemical and Biological Engineering, and Department of Microbiology, Bozeman, MT 59171, USA
| | - Wenqiang Yang
- Department of Plant Biology, The Carnegie Institution for Science, Stanford, CA 94305, USA
| | - Claudia Catalanotti
- Department of Plant Biology, The Carnegie Institution for Science, Stanford, CA 94305, USA
| | - Leonardo Magneschi
- Department of Plant Biology, The Carnegie Institution for Science, Stanford, CA 94305, USA
- PlantLab, Scuola Superiore Sant'Anna, 56127 Pisa, Italy
| | - Amaury de Montaigu
- Departamento de Bioquímica y Biología Molecular, Universidad de Córdoba, Córdoba 14071, Spain
- Max Planck Insitute for Plant Breeding Research, Department of Plant Developmental Biology, D-50829, Köln, Germany
| | - Jose J Higuera
- Departamento de Bioquímica y Biología Molecular, Universidad de Córdoba, Córdoba 14071, Spain
| | - Matthew Prior
- Department of Plant Biology, The Carnegie Institution for Science, Stanford, CA 94305, USA
| | - Aurora Galván
- Departamento de Bioquímica y Biología Molecular, Universidad de Córdoba, Córdoba 14071, Spain
| | - Emilio Fernandez
- Departamento de Bioquímica y Biología Molecular, Universidad de Córdoba, Córdoba 14071, Spain
| | - Arthur R Grossman
- Department of Plant Biology, The Carnegie Institution for Science, Stanford, CA 94305, USA
| |
Collapse
|
18
|
Grossman AR, Catalanotti C, Yang W, Dubini A, Magneschi L, Subramanian V, Posewitz MC, Seibert M. Multiple facets of anoxic metabolism and hydrogen production in the unicellular green alga Chlamydomonas reinhardtii. New Phytol 2011; 190:279-88. [PMID: 21563367 DOI: 10.1111/j.1469-8137.2010.03534.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Many microbes in the soil environment experience micro-oxic or anoxic conditions for much of the late afternoon and night, which inhibit or prevent respiratory metabolism. To sustain the production of energy and maintain vital cellular processes during the night, organisms have developed numerous pathways for fermentative metabolism. This review discusses fermentation pathways identified for the soil-dwelling model alga Chlamydomonas reinhardtii, its ability to produce molecular hydrogen under anoxic conditions through the activity of hydrogenases, and the molecular flexibility associated with fermentative metabolism that has only recently been revealed through the analysis of specific mutant strains.
Collapse
Affiliation(s)
- Arthur R Grossman
- Department of Plant Biology, Carnegie Institution for Science, Stanford, CA 94305, USA.
| | | | | | | | | | | | | | | |
Collapse
|
19
|
Magneschi L, Kudahettige RL, Alpi A, Perata P. Expansin gene expression and anoxic coleoptile elongation in rice cultivars. J Plant Physiol 2009; 166:1576-80. [PMID: 19410334 DOI: 10.1016/j.jplph.2009.03.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2009] [Revised: 03/23/2009] [Accepted: 03/23/2009] [Indexed: 05/14/2023]
Abstract
Coleoptiles of rice seeds that germinate under anoxia usually elongate to a length far exceeding the elongation that takes place under aerobic conditions. It has been suggested that expansins play a role in this process, but studies examining correlations between transcript levels of expansin genes and anoxic growth of rice coleoptiles are limited. In this study, we used real-time quantitative PCR (qPCR) analysis to develop a picture of expansin gene expression (seven alpha- and eight beta-expansins) (EXPA and EXPB) in two rice cultivars showing long (cv. Arborio Precoce) or short (cv. Lamone) coleoptiles when germinated under anoxia. Our qPCR analysis suggested up-regulation occurred for several expansin genes in anoxic coleoptiles in both rice cultivars. However, we found no correlation between transcript levels and the ability to elongate the coleoptile under anoxia.
Collapse
Affiliation(s)
- Leonardo Magneschi
- Plant Lab, Scuola Superiore Sant'Anna, Via Mariscoglio 34, 56124 Pisa, Italy.
| | | | | | | |
Collapse
|
20
|
Magneschi L, Kudahettige RL, Alpi A, Perata P. Comparative analysis of anoxic coleoptile elongation in rice varieties: relationship between coleoptile length and carbohydrate levels, fermentative metabolism and anaerobic gene expression. Plant Biol (Stuttg) 2009; 11:561-73. [PMID: 19538394 DOI: 10.1111/j.1438-8677.2008.00150.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Rice (Oryza sativa L.) seeds can germinate under anoxia and can show coleoptile elongation. The anoxic coleoptile is usually longer than aerobic coleoptiles. Although several hypotheses have been proposed to explain the ability of rice to elongate coleoptiles under anoxia, conclusive experimental evidence explaining this physiological trait is lacking. In order to investigate whether metabolic and molecular markers correlate with anoxic coleoptile length, we screened 141 Italian and 23 Sri Lankan rice cultivars for their ability to elongate coleoptiles under anoxia. Differences in anoxic coleoptile length were used to evaluate whether a correlation exists between coleoptile length and biochemical and molecular parameters. The expression of genes coding for glycolytic and fermentative enzymes showed a very low correlation with anoxic coleoptile length. Although differences were found in carbohydrate content between the varieties tested, this parameter also does not appear to be critical in terms of coleoptile elongation. Efficient ethanol fermentation does, however, correlate well with the elongation of coleoptiles under anoxic conditions.
Collapse
Affiliation(s)
- L Magneschi
- Plant Lab, Scuola Superiore Sant'Anna, Pisa, Italy
| | | | | | | |
Collapse
|
21
|
Magneschi L, Perata P. Rice germination and seedling growth in the absence of oxygen. Ann Bot 2009; 103:181-96. [PMID: 18660495 PMCID: PMC2707302 DOI: 10.1093/aob/mcn121] [Citation(s) in RCA: 143] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2008] [Revised: 04/08/2008] [Accepted: 06/03/2008] [Indexed: 05/20/2023]
Abstract
BACKGROUND Higher plants are aerobic organisms which suffer from the oxygen deficiency imposed by partial or total submergence. However, some plant species have developed strategies to avoid or withstand severe oxygen shortage and, in some cases, the complete absence of oxygen (tissue anoxia) for considerable periods of time. SCOPE Rice (Oryza sativa) is one of the few plant species that can tolerate prolonged soil flooding or complete submergence thanks to an array of adaptive mechanisms. These include an ability to elongate submerged shoot organs at faster than normal rates and to develop aerenchyma, allowing the efficient internal transport of oxygen from the re-emerged elongated shoot to submerged parts. However, rice seeds are able to germinate anaerobically by means of coleoptile elongation. This cannot be explained in terms of oxygen transport through an emerged shoot. This review provides an overview of anoxic rice germination that is mediated through coleoptile rather than root emergence. CONCLUSIONS Although there is still much to learn about the biochemical and molecular basis of anaerobic rice germination, the ability of rice to maintain an active fermentative metabolism (i.e. by fuelling the glycolytic pathway with readily fermentable carbohydrates) is certainly crucial. The results obtained through microarray-based transcript profiling confirm most of the previous evidence based on single-gene studies and biochemical analysis, and highlight new aspects of the molecular response of the rice coleoptile to anoxia.
Collapse
Affiliation(s)
| | - Pierdomenico Perata
- Plant & Crop Physiology Lab, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy
| |
Collapse
|
22
|
Sarrocco S, Gambineri F, Magneschi L, Valentini G, Vannacci G. Growth evaluation of an antagonistic Trichoderma virens isolate by using a BOD OxiTop® respirometric apparatus. J GEN APPL MICROBIOL 2008; 54:311-5. [DOI: 10.2323/jgam.54.311] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
23
|
Lasanthi-Kudahettige R, Magneschi L, Loreti E, Gonzali S, Licausi F, Novi G, Beretta O, Vitulli F, Alpi A, Perata P. Transcript profiling of the anoxic rice coleoptile. Plant Physiol 2007; 144:218-31. [PMID: 17369434 PMCID: PMC1913783 DOI: 10.1104/pp.106.093997] [Citation(s) in RCA: 209] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2006] [Accepted: 03/06/2007] [Indexed: 05/14/2023]
Abstract
Rice (Oryza sativa) seeds can germinate in the complete absence of oxygen. Under anoxia, the rice coleoptile elongates, reaching a length greater than that of the aerobic one. In this article, we compared and investigated the transcriptome of rice coleoptiles grown under aerobic and anaerobic conditions. The results allow drawing a detailed picture of the modulation of the transcripts involved in anaerobic carbohydrate metabolism, suggesting up-regulation of the steps required to produce and metabolize pyruvate and its derivatives. Sugars appear to play a signaling role under anoxia, with several genes indirectly up-regulated by anoxia-driven sugar starvation. Analysis of the effects of anoxia on the expansin gene families revealed that EXPA7 and EXPB12 are likely to be involved in rice coleoptile elongation under anoxia. Genes coding for ethylene response factors and heat shock proteins are among the genes modulated by anoxia in both rice and Arabidopsis (Arabidopsis thaliana). Identification of anoxia-induced ethylene response factors is suggestive because genes belonging to this gene family play a crucial role in rice tolerance to submergence, a process closely related to, but independent from, the ability to germinate under anoxia. Genes coding for some enzymes requiring oxygen for their activity are dramatically down-regulated under anoxia, suggesting the existence of an energy-saving strategy in the regulation of gene expression.
Collapse
|