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Rosnoblet C, Chatelain P, Klinguer A, Bègue H, Winckler P, Pichereaux C, Wendehenne D. The chaperone-like protein Cdc48 regulates ubiquitin-proteasome system in plants. PLANT, CELL & ENVIRONMENT 2021; 44:2636-2655. [PMID: 33908641 DOI: 10.1111/pce.14073] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 03/23/2021] [Accepted: 04/22/2021] [Indexed: 06/12/2023]
Abstract
The degradation of misfolded proteins is mainly mediated by the ubiquitin-proteasome system (UPS). UPS can be assisted by the protein Cdc48 but the relationship between UPS and Cdc48 in plants has been poorly investigated. Here, we analysed the regulation of UPS by Cdc48 in tobacco thanks to two independent cell lines overexpressing Cdc48 constitutively and plant leaves overexpressing Cdc48 transiently. In the cell lines, the accumulation of ubiquitinated proteins was affected both quantitatively and qualitatively and the number of proteasomal subunits was modified, while proteolytic activities were unchanged. Similarly, the over-expression of Cdc48 in planta impacted the accumulation of ubiquitinated proteins. A similar process occurred in leaves overexpressing transiently Rpn3, a proteasome subunit. Cdc48 being involved in plant immunity, its regulation of UPS was also investigated in response to cryptogein, an elicitor of immune responses. In the cell lines stably overexpressing Cdc48 and in leaves transiently overexpressing Cdc48 and/or Rpn3, cryptogein triggered a premature cell death while no increase of the proteasomal activity occurred. Overall, this study highlights a role for Cdc48 in ubiquitin homeostasis and confirms its involvement, as well as that of Rpn3, in the processes underlying the hypersensitive response.
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Affiliation(s)
- Claire Rosnoblet
- Agroécologie, AgroSup Dijon, CNRS, INRAE, Université de Bourgogne, Université Bourgogne Franche-Comté, Dijon, France
| | - Pauline Chatelain
- Agroécologie, AgroSup Dijon, CNRS, INRAE, Université de Bourgogne, Université Bourgogne Franche-Comté, Dijon, France
| | - Agnès Klinguer
- Agroécologie, AgroSup Dijon, CNRS, INRAE, Université de Bourgogne, Université Bourgogne Franche-Comté, Dijon, France
| | - Hervé Bègue
- Agroécologie, AgroSup Dijon, CNRS, INRAE, Université de Bourgogne, Université Bourgogne Franche-Comté, Dijon, France
- Laboratory of Parasitology and Mycology, Dijon University Hospital, Dijon, France
| | - Pascale Winckler
- Plateforme DimaCell, PAM UMR A 02.102, Université Bourgogne Franche-Comté, AgroSup Dijon, Dijon, France
| | - Carole Pichereaux
- Fédération de Recherche (FR3450), Agrobiosciences, Interactions et Biodiversité (AIB), CNRS, Toulouse, France
- Institut de Pharmacologie et de Biologie Structurale (IPBS), Université de Toulouse UPS, CNRS, Toulouse, France
| | - David Wendehenne
- Agroécologie, AgroSup Dijon, CNRS, INRAE, Université de Bourgogne, Université Bourgogne Franche-Comté, Dijon, France
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Heng S, Chen F, Wei C, Hu K, Yang Z, Wen J, Yi B, Ma C, Tu J, Si P, Fu T, Shen J. Identification of different cytoplasms based on newly developed mitotype-specific markers for marker-assisted selection breeding in Brassica napus L. PLANT CELL REPORTS 2017; 36:901-909. [PMID: 28265748 DOI: 10.1007/s00299-017-2121-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 02/15/2017] [Indexed: 06/06/2023]
Abstract
Different mitotype-specific markers were developed to distinguish different cytoplasms in Brassica napus L. Mitotype-specific markers have been developed to distinguish different mitotypes in plant. And use of molecular markers to identify different mitotypes in Brassica napus would enhance breeding efficiency. Here, we comparatively analyzed six sequenced mitochondrial genomes in Brassica napus and identified collinear block sequences and mitotype-specific sequences (MSSs) of these mitochondrial genomes. The collinear block sequences between mitochondrial genomes of nap, cam, and pol cytoplasmic male sterility (CMS) lines were higher than those of other lines. After comparative analysis of the six sequenced mitochondrial genomes (cam, nap, ole, pol CMS, ogu CMS, and hau CMS), 90 MSSs with sizes ranging from 101 to 9981 bp and a total length of 103,756 bp (accounting for 6.77% of the mitochondrial genome sequences) were identified. Additionally, 12 mitotype-specific markers were developed based on the mitochondrial genome-specific sequences in order to distinguish among these different mitotypes. Cytoplasms of 570 different inbred lines collected across scientific research institutes in China were identified using the MSS markers developed in our study. In addition to confirming the accuracy of the cytoplasmic identification, we also identified mitotypes that have not been reported in Brassica napus. Our study may provide guidance for the classification of different mitotypes in B. napus breeding.
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Affiliation(s)
- Shuangping Heng
- National Key Laboratory of Crop Genetic Improvement, National Engineering Research Center of Rapeseed, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
- College of Life Science, Xinyang Normal University, Xinyang, 464000, People's Republic of China
| | - Fengyi Chen
- National Key Laboratory of Crop Genetic Improvement, National Engineering Research Center of Rapeseed, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Chao Wei
- National Key Laboratory of Crop Genetic Improvement, National Engineering Research Center of Rapeseed, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Kaining Hu
- National Key Laboratory of Crop Genetic Improvement, National Engineering Research Center of Rapeseed, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Zonghui Yang
- National Key Laboratory of Crop Genetic Improvement, National Engineering Research Center of Rapeseed, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Jing Wen
- National Key Laboratory of Crop Genetic Improvement, National Engineering Research Center of Rapeseed, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Bin Yi
- National Key Laboratory of Crop Genetic Improvement, National Engineering Research Center of Rapeseed, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Chaozhi Ma
- National Key Laboratory of Crop Genetic Improvement, National Engineering Research Center of Rapeseed, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Jinxing Tu
- National Key Laboratory of Crop Genetic Improvement, National Engineering Research Center of Rapeseed, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Ping Si
- Centre for Plant Genetics and Breeding, School of Plant Biology, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
| | - Tingdong Fu
- National Key Laboratory of Crop Genetic Improvement, National Engineering Research Center of Rapeseed, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China
| | - Jinxiong Shen
- National Key Laboratory of Crop Genetic Improvement, National Engineering Research Center of Rapeseed, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China.
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Zheng JW, Li DW, Lu Y, Chen J, Liang JJ, Zhang L, Yang WD, Liu JS, Lu SH, Li HY. Molecular exploration of algal interaction between the diatom Phaeodactylum tricornutum and the dinoflagellate Alexandrium tamarense. ALGAL RES 2016. [DOI: 10.1016/j.algal.2016.04.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Lu Y, Wohlrab S, Groth M, Glöckner G, Guillou L, John U. Transcriptomic profiling of Alexandrium fundyense
during physical interaction with or exposure to chemical signals from the parasite Amoebophrya. Mol Ecol 2016; 25:1294-307. [DOI: 10.1111/mec.13566] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Revised: 01/08/2016] [Accepted: 01/26/2016] [Indexed: 01/02/2023]
Affiliation(s)
- Yameng Lu
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung; Bremerhaven Germany
| | - Sylke Wohlrab
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung; Bremerhaven Germany
| | - Marco Groth
- Leibniz-Institute for Age Research; Fritz Lipmann Institute Jena; Jena Germany
| | - Gernot Glöckner
- Biochemistry I; Medical Faculty; University of Cologne and Institute for Freshwater Ecology and Inland Fisheries (IGB); Berlin Germany
| | - Laure Guillou
- Laboratoire Adaptation et Diversité en Milieu Marin; CNRS; UMR 7144, Place Georges Teissier, CS90074 29688 Roscoff Cedex France
- Université Pierre et Marie Curie-Paris 6; Sorbonne Universités; UMR 7144, Station Biologique de Roscoff, Place Georges Teissier, CS90074 29688 Roscoff Cedex France
| | - Uwe John
- Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung; Bremerhaven Germany
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Taylor NL, Millar AH. Plant mitochondrial proteomics. Methods Mol Biol 2015; 1305:83-106. [PMID: 25910728 DOI: 10.1007/978-1-4939-2639-8_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Mitochondrial proteomics has significantly developed since the first plant mitochondrial proteomes were published in 2001. Many studies have added to our knowledge of the protein components that make up plant mitochondria in a wide range of species. Here we present two common and one emerging quantitative proteomic techniques that can be used to study the abundance of mitochondrial proteins. For this publication, we have described the methods as an approach to determine the amount of contamination in a mitochondrial isolation to contrast historical approaches that involved the use of use of antibodies to specific marker proteins or the measurement of activity of marker enzymes. However, these approaches could easily be adapted to carry out control versus treatment studies.
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Affiliation(s)
- Nicolas L Taylor
- Plant Energy Biology, Australian Research Council Centre of Excellence and Centre for Comparative Analysis of Biomolecular Networks (CABiN), The University of Western Australia, Bayliss Building M316, 35 Stirling Highway, Crawley, WA, 6009, Australia
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Wiesel L, Newton AC, Elliott I, Booty D, Gilroy EM, Birch PRJ, Hein I. Molecular effects of resistance elicitors from biological origin and their potential for crop protection. FRONTIERS IN PLANT SCIENCE 2014; 5:655. [PMID: 25484886 PMCID: PMC4240061 DOI: 10.3389/fpls.2014.00655] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Accepted: 11/04/2014] [Indexed: 05/17/2023]
Abstract
Plants contain a sophisticated innate immune network to prevent pathogenic microbes from gaining access to nutrients and from colonizing internal structures. The first layer of inducible response is governed by the plant following the perception of microbe- or modified plant-derived molecules. As the perception of these molecules results in a plant response that can provide efficient resistance toward non-adapted pathogens they can also be described as "defense elicitors." In compatible plant/microbe interactions, adapted microorganisms have means to avoid or disable this resistance response and promote virulence. However, this requires a detailed spatial and temporal response from the invading pathogens. In agricultural practice, treating plants with isolated defense elicitors in the absence of pathogens can promote plant resistance by uncoupling defense activation from the effects of pathogen virulence determinants. The plant responses to plant, bacterial, oomycete, or fungal-derived elicitors are not, in all cases, universal and need elucidating prior to the application in agriculture. This review provides an overview of currently known elicitors of biological rather than synthetic origin and places their activity into a molecular context.
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Affiliation(s)
- Lea Wiesel
- Cell and Molecular Sciences, The James Hutton InstituteDundee, UK
| | - Adrian C. Newton
- Cell and Molecular Sciences, The James Hutton InstituteDundee, UK
| | | | | | | | - Paul R. J. Birch
- Cell and Molecular Sciences, The James Hutton InstituteDundee, UK
- The Division of Plant Sciences, College of Life Science, University of Dundee at the James Hutton InstituteDundee, UK
| | - Ingo Hein
- Cell and Molecular Sciences, The James Hutton InstituteDundee, UK
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Welchen E, García L, Mansilla N, Gonzalez DH. Coordination of plant mitochondrial biogenesis: keeping pace with cellular requirements. FRONTIERS IN PLANT SCIENCE 2014; 4:551. [PMID: 24409193 PMCID: PMC3884152 DOI: 10.3389/fpls.2013.00551] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Accepted: 12/23/2013] [Indexed: 05/20/2023]
Abstract
Plant mitochondria are complex organelles that carry out numerous metabolic processes related with the generation of energy for cellular functions and the synthesis and degradation of several compounds. Mitochondria are semiautonomous and dynamic organelles changing in shape, number, and composition depending on tissue or developmental stage. The biogenesis of functional mitochondria requires the coordination of genes present both in the nucleus and the organelle. In addition, due to their central role, all processes held inside mitochondria must be finely coordinated with those in other organelles according to cellular demands. Coordination is achieved by transcriptional control of nuclear genes encoding mitochondrial proteins by specific transcription factors that recognize conserved elements in their promoter regions. In turn, the expression of most of these transcription factors is linked to developmental and environmental cues, according to the availability of nutrients, light-dark cycles, and warning signals generated in response to stress conditions. Among the signals impacting in the expression of nuclear genes, retrograde signals that originate inside mitochondria help to adjust mitochondrial biogenesis to organelle demands. Adding more complexity, several nuclear encoded proteins are dual localized to mitochondria and either chloroplasts or the nucleus. Dual targeting might establish a crosstalk between the nucleus and cell organelles to ensure a fine coordination of cellular activities. In this article, we discuss how the different levels of coordination of mitochondrial biogenesis interconnect to optimize the function of the organelle according to both internal and external demands.
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Affiliation(s)
- Elina Welchen
- Instituto de Agrobiotecnología del Litoral–Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad Nacional del LitoralSanta Fe, Argentina
- Cátedra de Biología Celular y Molecular, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del LitoralSanta Fe, Argentina
- *Correspondence: Elina Welchen and Daniel H. Gonzalez, Cátedra de Biología Celular y Molecular, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, CC 242 Paraje El Pozo, 3000 Santa Fe, Argentina e-mail: ;
| | - Lucila García
- Instituto de Agrobiotecnología del Litoral–Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad Nacional del LitoralSanta Fe, Argentina
- Cátedra de Biología Celular y Molecular, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del LitoralSanta Fe, Argentina
| | - Natanael Mansilla
- Instituto de Agrobiotecnología del Litoral–Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad Nacional del LitoralSanta Fe, Argentina
- Cátedra de Biología Celular y Molecular, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del LitoralSanta Fe, Argentina
| | - Daniel H. Gonzalez
- Instituto de Agrobiotecnología del Litoral–Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad Nacional del LitoralSanta Fe, Argentina
- Cátedra de Biología Celular y Molecular, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del LitoralSanta Fe, Argentina
- *Correspondence: Elina Welchen and Daniel H. Gonzalez, Cátedra de Biología Celular y Molecular, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, CC 242 Paraje El Pozo, 3000 Santa Fe, Argentina e-mail: ;
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Abstract
Mitochondria are responsible for a number of major biochemical processes in plant cells including oxidative phosphorylation and photorespiration. Traditionally their primary role has been viewed as the oxidation of organic acids via the tricarboxylic acid cycle and the synthesis of ATP coupled to the transfer of electrons to O2. More recently its role in the synthesis of many metabolites such as amino acids, lipids, and vitamins has been revealed. They also contain large number of transporters including members of the mitochondrial carrier substrate family (MCSF) that allow the exchange of metabolites with the cytosol. Mitochondria also contain their own genome and actively transcribe and translate a set of proteins that are coordinated with proteins encoded by the nuclear genome to produce large multisubunit enzymes. To reveal the full diversity of metabolism carried out by mitochondria significant efforts have sought to uncover the protein profile of mitochondria from both crops and model plants. Successful proteomic analysis depends on the preparation of high-quality isolated mitochondria, coupled to high-resolution proteomic techniques for identification, quantitation, and assessment of the degree of contamination by other organelles and cellular compartments. Here we outline a mitochondrial isolation protocol that can be applied to a range of plant tissues, and detail methods of assessing the quality and purity of the resultant sample, including calculations of respiratory control ratio, marker enzyme assays, differential in-gel electrophoresis, and quantitative gel-free mass spectrometry.
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Affiliation(s)
- Shaobai Huang
- ARC Centre of Excellence in Plant Energy Biology and Centre for Comparative Analysis of Biomolecular Networks (CABiN), The University of Western Australia, Crawley, WA, Australia
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Caldana C, Li Y, Leisse A, Zhang Y, Bartholomaeus L, Fernie AR, Willmitzer L, Giavalisco P. Systemic analysis of inducible target of rapamycin mutants reveal a general metabolic switch controlling growth in Arabidopsis thaliana. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2013; 73:897-909. [PMID: 23173928 DOI: 10.1111/tpj.12080] [Citation(s) in RCA: 157] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2012] [Revised: 11/18/2012] [Accepted: 11/20/2012] [Indexed: 05/19/2023]
Abstract
The target of rapamycin (TOR) pathway is a major regulator of growth in all eukaryotes, integrating energy, nutrient and stress signals into molecular decisions. By using large-scale MS-based metabolite profiling of primary, secondary and lipid compounds in combination with array-based transcript profiling, we show that the TOR protein not only regulates growth but also influences nutrient partitioning and central energy metabolism. The study was performed on plants exhibiting conditional down-regulation of AtTOR expression, revealing strong regulation of genes involved in pathways such as the cell cycle, cell-wall modifications and senescence, together with major changes in transcripts and metabolites of the primary and secondary metabolism. In agreement with these results, our morphological and metabolic analyses disclosed major metabolic changes leading to massive accumulations of storage lipids and starch. The implications of these data in the context of the general role of TOR in eukaryotic systems are discussed in parallel with the plant-specific aspects of TOR function. Finally, we propose a role for harnessing the plant TOR pathway by utilizing it as a potent metabolic switch, offering a possible route for biotechnological optimization of plant energy content and carbon partitioning for the production of bioenergy.
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Affiliation(s)
- Camila Caldana
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam, Germany.
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Lee CP, Taylor NL, Millar AH. Recent advances in the composition and heterogeneity of the Arabidopsis mitochondrial proteome. FRONTIERS IN PLANT SCIENCE 2013; 4:4. [PMID: 23355843 PMCID: PMC3554846 DOI: 10.3389/fpls.2013.00004] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2012] [Accepted: 01/03/2013] [Indexed: 05/04/2023]
Abstract
Mitochondria are important organelles for providing the ATP and carbon skeletons required to sustain cell growth. While these organelles also participate in other key metabolic functions across species, they have a specialized role in plants of optimizing photosynthesis through participating in photorespiration. It is therefore critical to map the protein composition of mitochondria in plants to gain a better understanding of their regulation and define the uniqueness of their metabolic networks. To date, <30% of the predicted number of mitochondrial proteins has been verified experimentally by proteomics and/or GFP localization studies. In this mini-review, we will provide an overview of the advances in mitochondrial proteomics in the model plant Arabidopsis thaliana over the past 5 years. The ultimate goal of mapping the mitochondrial proteome in Arabidopsis is to discover novel mitochondrial components that are critical during development in plants as well as genes involved in developmental abnormalities, such as those implicated in mitochondrial-linked cytoplasmic male sterility.
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Affiliation(s)
- Chun Pong Lee
- Department of Plant Sciences, University of OxfordOxford, UK
- *Correspondence: Chun Pong Lee, Department of Plant Sciences, University of Oxford, South Parks Road, Oxford OX1 3RB, UK. e-mail:
| | - Nicolas L. Taylor
- ARC Centre of Excellence in Plant Energy Biology, The University of Western AustraliaCrawley, WA, Australia
- Centre for Comparative Analysis of Biomolecular Networks, The University of Western AustraliaCrawley, WA, Australia
| | - A. Harvey Millar
- ARC Centre of Excellence in Plant Energy Biology, The University of Western AustraliaCrawley, WA, Australia
- Centre for Comparative Analysis of Biomolecular Networks, The University of Western AustraliaCrawley, WA, Australia
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11
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Unraveling plant responses to bacterial pathogens through proteomics. J Biomed Biotechnol 2011; 2011:354801. [PMID: 22131803 PMCID: PMC3216475 DOI: 10.1155/2011/354801] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Revised: 08/24/2011] [Accepted: 09/02/2011] [Indexed: 12/15/2022] Open
Abstract
Plant pathogenic bacteria cause diseases in important crops and seriously and negatively impact agricultural production. Therefore, an understanding of the mechanisms by which plants resist bacterial infection at the stage of the basal immune response or mount a successful specific R-dependent defense response is crucial since a better understanding of the biochemical and cellular mechanisms underlying these interactions will enable molecular and transgenic approaches to crops with increased biotic resistance. In recent years, proteomics has been used to gain in-depth understanding of many aspects of the host defense against pathogens and has allowed monitoring differences in abundance of proteins as well as posttranscriptional and posttranslational processes, protein activation/inactivation, and turnover. Proteomics also offers a window to study protein trafficking and routes of communication between organelles. Here, we summarize and discuss current progress in proteomics of the basal and specific host defense responses elicited by bacterial pathogens.
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Holzmeister C, Fröhlich A, Sarioglu H, Bauer N, Durner J, Lindermayr C. Proteomic analysis of defense response of wildtype Arabidopsis thaliana
and plants with impaired NO- homeostasis. Proteomics 2011; 11:1664-83. [DOI: 10.1002/pmic.201000652] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2010] [Revised: 01/21/2011] [Accepted: 02/01/2011] [Indexed: 01/01/2023]
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Palmieri MC, Lindermayr C, Bauwe H, Steinhauser C, Durner J. Regulation of plant glycine decarboxylase by s-nitrosylation and glutathionylation. PLANT PHYSIOLOGY 2010; 152:1514-28. [PMID: 20089767 PMCID: PMC2832280 DOI: 10.1104/pp.109.152579] [Citation(s) in RCA: 151] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2009] [Accepted: 01/18/2010] [Indexed: 05/18/2023]
Abstract
Mitochondria play an essential role in nitric oxide (NO) signal transduction in plants. Using the biotin-switch method in conjunction with nano-liquid chromatography and mass spectrometry, we identified 11 candidate proteins that were S-nitrosylated and/or glutathionylated in mitochondria of Arabidopsis (Arabidopsis thaliana) leaves. These included glycine decarboxylase complex (GDC), a key enzyme of the photorespiratory C(2) cycle in C3 plants. GDC activity was inhibited by S-nitrosoglutathione due to S-nitrosylation/S-glutathionylation of several cysteine residues. Gas-exchange measurements demonstrated that the bacterial elicitor harpin, a strong inducer of reactive oxygen species and NO, inhibits GDC activity. Furthermore, an inhibitor of GDC, aminoacetonitrile, was able to mimic mitochondrial depolarization, hydrogen peroxide production, and cell death in response to stress or harpin treatment of cultured Arabidopsis cells. These findings indicate that the mitochondrial photorespiratory system is involved in the regulation of NO signal transduction in Arabidopsis.
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