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Czarnocka W, Van Der Kelen K, Willems P, Szechyńska-Hebda M, Shahnejat-Bushehri S, Balazadeh S, Rusaczonek A, Mueller-Roeber B, Van Breusegem F, Karpiński S. The dual role of LESION SIMULATING DISEASE 1 as a condition-dependent scaffold protein and transcription regulator. PLANT, CELL & ENVIRONMENT 2017; 40:2644-2662. [PMID: 28555890 DOI: 10.1111/pce.12994] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 05/14/2017] [Accepted: 05/15/2017] [Indexed: 06/07/2023]
Abstract
Since its discovery over two decades ago as an important cell death regulator in Arabidopsis thaliana, the role of LESION SIMULATING DISEASE 1 (LSD1) has been studied intensively within both biotic and abiotic stress responses as well as with respect to plant fitness regulation. However, its molecular mode of action remains enigmatic. Here, we demonstrate that nucleo-cytoplasmic LSD1 interacts with a broad range of other proteins that are engaged in various molecular pathways such as ubiquitination, methylation, cell cycle control, gametogenesis, embryo development and cell wall formation. The interaction of LSD1 with these partners is dependent on redox status, as oxidative stress significantly changes the quantity and types of LSD1-formed complexes. Furthermore, we show that LSD1 regulates the number and size of leaf mesophyll cells and affects plant vegetative growth. Importantly, we also reveal that in addition to its function as a scaffold protein, LSD1 acts as a transcriptional regulator. Taken together, our results demonstrate that LSD1 plays a dual role within the cell by acting as a condition-dependent scaffold protein and as a transcription regulator.
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Affiliation(s)
- Weronika Czarnocka
- Department of Plant Genetics, Breeding and Biotechnology, Faculty of Horticulture, Biotechnology and Landscape Architecture, Warsaw University of Life Sciences (SGGW), Nowoursynowska Street 159, 02-776, Warsaw, Poland
- Department of Botany, Faculty of Agriculture and Biology, Warsaw University of Life Sciences (SGGW), Nowoursynowska Street 159, 02-776, Warsaw, Poland
| | - Katrien Van Der Kelen
- Ghent University, Department of Plant Biotechnology and Bioinformatics, Technologiepark 927, 9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 927, 9052, Ghent, Belgium
| | - Patrick Willems
- Ghent University, Department of Plant Biotechnology and Bioinformatics, Technologiepark 927, 9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 927, 9052, Ghent, Belgium
| | - Magdalena Szechyńska-Hebda
- Department of Plant Genetics, Breeding and Biotechnology, Faculty of Horticulture, Biotechnology and Landscape Architecture, Warsaw University of Life Sciences (SGGW), Nowoursynowska Street 159, 02-776, Warsaw, Poland
- Institute of Plant Physiology, Polish Academy of Sciences, Niezapominajek Street 21, 30-239, Cracow, Poland
| | - Sara Shahnejat-Bushehri
- Institute of Biochemistry and Biology, University of Potsdam, Karl-Liebknecht Street 24-25, 14476, Potsdam, Germany
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam, Germany
| | - Salma Balazadeh
- Institute of Biochemistry and Biology, University of Potsdam, Karl-Liebknecht Street 24-25, 14476, Potsdam, Germany
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam, Germany
| | - Anna Rusaczonek
- Department of Plant Genetics, Breeding and Biotechnology, Faculty of Horticulture, Biotechnology and Landscape Architecture, Warsaw University of Life Sciences (SGGW), Nowoursynowska Street 159, 02-776, Warsaw, Poland
| | - Bernd Mueller-Roeber
- Institute of Biochemistry and Biology, University of Potsdam, Karl-Liebknecht Street 24-25, 14476, Potsdam, Germany
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam, Germany
| | - Frank Van Breusegem
- Ghent University, Department of Plant Biotechnology and Bioinformatics, Technologiepark 927, 9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 927, 9052, Ghent, Belgium
| | - Stanisław Karpiński
- Department of Plant Genetics, Breeding and Biotechnology, Faculty of Horticulture, Biotechnology and Landscape Architecture, Warsaw University of Life Sciences (SGGW), Nowoursynowska Street 159, 02-776, Warsaw, Poland
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Vartapetian BB, Dolgikh YI, Polyakova LI, Chichkova NV, Vartapetian AB. Biotechnological approaches to creation of hypoxia and anoxia tolerant plants. Acta Naturae 2014; 6:19-30. [PMID: 25093107 PMCID: PMC4115222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
The present work provides results of a number of biotechnological studies aimed at creating cell lines and entire plants resistant to anaerobic stress. Developed biotechnological approaches were based on earlier fundamental researches into anaerobic stress in plants, so "Introduction" briefly covers the importance of the problem and focuses on works considering two main strategies of plants adaptation to anaerobic stress. Those are adaptation at molecular level where key factor is anaerobic metabolism of energy (true tolerance) and adaptation of the entire plant via formation of aerenchyma and facilitated transportation of oxygen (apparent tolerance). Thus, sugarcane and wheat cells resistant to anaerobic stress were obtained through consecutive in vitro selection under conditions of anoxia and absence of exogenous carbohydrates. Tolerant wheat cells were used to regenerate entire plants of higher resistance to root anaerobiosis. It has been demonstrated that cells tolerance to anoxia is significantly supported by their ability to utilize exogenous nitrate. Cells tolerance established itself at the genetic level and was inherited by further generations. Apart from that, other successful attempts to increase tolerance of plants to anaerobic stress by means of stimulation of glycolysis and overexpression of genes responsible for cytokinin synthesis and programmed cell death are also discussed. The presented data proved the notion of two main strategies of plants adaptation to anaerobic stress proposed earlier on the base of fundamental studies.
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Affiliation(s)
- B. B. Vartapetian
- Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Str., 35, Moscow, Russia, 127276
| | - Y. I. Dolgikh
- Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Str., 35, Moscow, Russia, 127276
| | - L. I. Polyakova
- Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Str., 35, Moscow, Russia, 127276
| | - N. V. Chichkova
- A.N.Belozersky Institute of Physico-Chemical Biology Moscow State University
| | - A. B. Vartapetian
- A.N.Belozersky Institute of Physico-Chemical Biology Moscow State University
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Domenichini S, Benhamed M, De Jaeger G, Van De Slijke E, Blanchet S, Bourge M, De Veylder L, Bergounioux C, Raynaud C. Evidence for a role of Arabidopsis CDT1 proteins in gametophyte development and maintenance of genome integrity. THE PLANT CELL 2012; 24:2779-91. [PMID: 22773747 PMCID: PMC3426114 DOI: 10.1105/tpc.112.100156] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Meristems retain the ability to divide throughout the life cycle of plants, which can last for over 1000 years in some species. Furthermore, the germline is not laid down early during embryogenesis but originates from the meristematic cells relatively late during development. Thus, accurate cell cycle regulation is of utmost importance to avoid the accumulation of mutations during vegetative growth and reproduction. The Arabidopsis thaliana genome encodes two homologs of the replication licensing factor CDC10 Target1 (CDT1), and overexpression of CDT1a stimulates DNA replication. Here, we have investigated the respective functions of Arabidopsis CDT1a and CDT1b. We show that CDT1 proteins have partially redundant functions during gametophyte development and are required for the maintenance of genome integrity. Furthermore, CDT1-RNAi plants show endogenous DNA stress, are more tolerant than the wild type to DNA-damaging agents, and show constitutive induction of genes involved in DNA repair. This DNA stress response may be a direct consequence of reduced CDT1 accumulation on DNA repair or may relate to the ability of CDT1 proteins to form complexes with DNA polymerase ε, which functions in DNA replication and in DNA stress checkpoint activation. Taken together, our results provide evidence for a crucial role of Arabidopsis CDT1 proteins in genome stability.
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Affiliation(s)
- Séverine Domenichini
- Institut de Biologie des Plantes, UMR8618 Université Paris-Sud XI, 91405 Orsay, France
| | - Moussa Benhamed
- Institut de Biologie des Plantes, UMR8618 Université Paris-Sud XI, 91405 Orsay, France
| | - Geert De Jaeger
- Department of Plant Systems Biology, Vlaams Instituut voor Biotechnologie, B-9052 Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052 Ghent, Belgium
| | - Eveline Van De Slijke
- Department of Plant Systems Biology, Vlaams Instituut voor Biotechnologie, B-9052 Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052 Ghent, Belgium
| | - Sophie Blanchet
- Institut de Biologie des Plantes, UMR8618 Université Paris-Sud XI, 91405 Orsay, France
| | - Mickaël Bourge
- Pôle de Biologie Cellulaire, Imagif, Centre de Recherche de Gif, CNRS, IFR87, 91198 Gif-sur-Yvette cedex, France
| | - Lieven De Veylder
- Department of Plant Systems Biology, Vlaams Instituut voor Biotechnologie, B-9052 Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052 Ghent, Belgium
| | - Catherine Bergounioux
- Institut de Biologie des Plantes, UMR8618 Université Paris-Sud XI, 91405 Orsay, France
| | - Cécile Raynaud
- Institut de Biologie des Plantes, UMR8618 Université Paris-Sud XI, 91405 Orsay, France
- Address correspondence to
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Niu L, Lu F, Zhao T, Liu C, Cao X. The enzymatic activity of Arabidopsis protein arginine methyltransferase 10 is essential for flowering time regulation. Protein Cell 2012; 3:450-9. [PMID: 22729397 DOI: 10.1007/s13238-012-2935-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2012] [Accepted: 05/21/2012] [Indexed: 01/15/2023] Open
Abstract
Arabidopsis AtPRMT10 is a plant-specific type I protein arginine methyltransferase that can asymmetrically dimethylate arginine 3 of histone H4 with auto-methylation activity. Mutations of AtPRMT10 derepress FLOWERING LOCUS C (FLC) expression resulting in a late-flowering phenotype. Here, to further investigate the biochemical characteristics of AtPRMT10, we analyzed a series of mutated forms of the AtPRMT10 protein. We demonstrate that the conserved "VLD" residues and "double-E loop" are essential for enzymatic activity of AtPRMT10. In addition, we show that Arg54 and Cys259 of AtPRMT10, two residues unreported in animals, are also important for its enzymatic activity. We find that Arg13 of AtPRMT10 is the auto-methylation site. However, substitution of Arg13 to Lys13 does not affect its enzymatic activity. In vivo complementation assays reveal that plants expressing AtPRMT10 with VLD-AAA, E143Q or E152Q mutations retain high levels of FLC expression and fail to rescue the late-flowering phenotype of atprmt10 plants. Taken together, we conclude that the methyltransferase activity of AtPRMT10 is essential for repressing FLC expression and promoting flowering in Arabidopsis.
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Affiliation(s)
- Lifang Niu
- State Key Laboratory of Plant Genomics and National Center for Plant Gene Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
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