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Pfister C, Bourque S, Chatagnier O, Chiltz A, Fromentin J, Van Tuinen D, Wipf D, Leborgne-Castel N. Differential Signaling and Sugar Exchanges in Response to Avirulent Pathogen- and Symbiont-Derived Molecules in Tobacco Cells. Front Microbiol 2017; 8:2228. [PMID: 29209286 PMCID: PMC5701941 DOI: 10.3389/fmicb.2017.02228] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 08/16/2017] [Accepted: 10/30/2017] [Indexed: 01/17/2023] Open
Abstract
Plants interact with microbes whose ultimate aim is to exploit plant carbohydrates for their reproduction. Plant–microbe interactions (PMIs) are classified according to the nature of their trophic exchanges: while mutualistic microbes trade nutrients with plants, pathogens unilaterally divert carbohydrates. The early responses following microbe recognition and the subsequent control of plant sugar distribution are still poorly understood. To further decipher PMI functionality, we used tobacco cells treated with microbial molecules mimicking pathogenic or mutualistic PMIs, namely cryptogein, a defense elicitor, and chitotetrasaccharide (CO4), which is secreted by mycorrhizal fungi. CO4 was perceived by tobacco cells and triggered widespread transient signaling components such as a sharp cytosolic Ca2+ elevation, NtrbohD-dependent H2O2 production, and MAP kinase activation. These CO4-induced events differed from those induced by cryptogein, i.e., sustained events leading to cell death. Furthermore, cryptogein treatment inhibited glucose and sucrose uptake but not fructose uptake, and promoted the expression of NtSUT and NtSWEET sugar transporters, whereas CO4 had no effect on sugar uptake and only a slight effect on NtSWEET2B expression. Our results suggest that microbial molecules induce different signaling responses that reflect microbial lifestyle and the subsequent outcome of the interaction.
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Affiliation(s)
- Carole Pfister
- Agroécologie, AgroSup Dijon, CNRS, INRA, Université Bourgogne Franche-Comté, Dijon, France
| | - Stéphane Bourque
- Agroécologie, AgroSup Dijon, CNRS, INRA, Université Bourgogne Franche-Comté, Dijon, France
| | - Odile Chatagnier
- Agroécologie, AgroSup Dijon, CNRS, INRA, Université Bourgogne Franche-Comté, Dijon, France
| | - Annick Chiltz
- Agroécologie, AgroSup Dijon, CNRS, INRA, Université Bourgogne Franche-Comté, Dijon, France
| | - Jérôme Fromentin
- Agroécologie, AgroSup Dijon, CNRS, INRA, Université Bourgogne Franche-Comté, Dijon, France
| | - Diederik Van Tuinen
- Agroécologie, AgroSup Dijon, CNRS, INRA, Université Bourgogne Franche-Comté, Dijon, France
| | - Daniel Wipf
- Agroécologie, AgroSup Dijon, CNRS, INRA, Université Bourgogne Franche-Comté, Dijon, France
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Cacas JL, Gerbeau-Pissot P, Fromentin J, Cantrel C, Thomas D, Jeannette E, Kalachova T, Mongrand S, Simon-Plas F, Ruelland E. Diacylglycerol kinases activate tobacco NADPH oxidase-dependent oxidative burst in response to cryptogein. Plant Cell Environ 2017; 40:585-598. [PMID: 27272019 DOI: 10.1111/pce.12771] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [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: 04/12/2016] [Revised: 05/23/2016] [Accepted: 05/24/2016] [Indexed: 05/20/2023]
Abstract
Cryptogein is a 10 kDa protein secreted by the oomycete Phytophthora cryptogea that activates defence mechanisms in tobacco plants. Among early signalling events triggered by this microbial-associated molecular pattern is a transient apoplastic oxidative burst which is dependent on the nicotinamide adenine dinucleotide phosphate (NADPH) oxidase activity of the RESPIRATORY BURST OXIDASE HOMOLOG isoform D (RBOHD). Using radioactive [33 P]-orthophosphate labelling of tobacco Bright Yellow-2 suspension cells, we here provide in vivo evidence for a rapid accumulation of phosphatidic acid (PA) in response to cryptogein because of the coordinated onset of phosphoinositide-dependent phospholipase C and diacylglycerol kinase (DGK) activities. Both enzyme specific inhibitors and silencing of the phylogenetic cluster III of the tobacco DGK family were found to reduce PA production upon elicitation and to strongly decrease the RBOHD-mediated oxidative burst. Therefore, it appears that PA originating from DGK controls NADPH-oxidase activity. Amongst cluster III DGKs, the expression of DGK5-like was up-regulated in response to cryptogein. Besides DGK5-like is likely to be the main cluster III DGK isoform silenced in one of our mutant lines, making it a strong candidate for the observed response to cryptogein. The relevance of these results is discussed with regard to early signalling lipid-mediated events in plant immunity.
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Affiliation(s)
- Jean-Luc Cacas
- Agroécologie, AgroSup Dijon, CNRS, INRA, Univ. Bourgogne Franche-Comté, F-21000, Dijon, France
| | - Patricia Gerbeau-Pissot
- Agroécologie, AgroSup Dijon, CNRS, INRA, Univ. Bourgogne Franche-Comté, F-21000, Dijon, France
| | - Jérôme Fromentin
- Agroécologie, AgroSup Dijon, CNRS, INRA, Univ. Bourgogne Franche-Comté, F-21000, Dijon, France
| | - Catherine Cantrel
- UPMC UnivParis06, UR5, Physiologie Cellulaire et Moléculaire des Plantes, 4 place Jussieu, 75252, Paris cedex 05, France
| | - Dominique Thomas
- Agroécologie, AgroSup Dijon, CNRS, INRA, Univ. Bourgogne Franche-Comté, F-21000, Dijon, France
| | - Emmanuelle Jeannette
- UPMC UnivParis06, UR5, Physiologie Cellulaire et Moléculaire des Plantes, 4 place Jussieu, 75252, Paris cedex 05, France
| | - Tetiana Kalachova
- UPE, UPEC, Institut d'Ecologie et des Sciences de l'Environnement de Paris, 61 avenue du général de Gaulle, 94010, Créteil, France
- CNRS, UMR7618, Institut d'Ecologie et des Sciences de l'Environnement de Paris, 61 avenue du général de Gaulle, 94010, Créteil, France
| | - Sébastien Mongrand
- CNRS, UMR 5200 Laboratoire de Biogenèse Membranaire, INRA Bordeaux Aquitaine, BP81, F-33883, Villenave d'Ornon, France
| | - Françoise Simon-Plas
- Agroécologie, AgroSup Dijon, CNRS, INRA, Univ. Bourgogne Franche-Comté, F-21000, Dijon, France
| | - Eric Ruelland
- UPMC UnivParis06, UR5, Physiologie Cellulaire et Moléculaire des Plantes, 4 place Jussieu, 75252, Paris cedex 05, France
- UPE, UPEC, Institut d'Ecologie et des Sciences de l'Environnement de Paris, 61 avenue du général de Gaulle, 94010, Créteil, France
- CNRS, UMR7618, Institut d'Ecologie et des Sciences de l'Environnement de Paris, 61 avenue du général de Gaulle, 94010, Créteil, France
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3
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Coursol S, Fromentin J, Noirot E, Brière C, Robert F, Morel J, Liang YK, Lherminier J, Simon-Plas F. Long-chain bases and their phosphorylated derivatives differentially regulate cryptogein-induced production of reactive oxygen species in tobacco (Nicotiana tabacum) BY-2 cells. New Phytol 2015; 205:1239-1249. [PMID: 25303640 DOI: 10.1111/nph.13094] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [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: 07/25/2014] [Accepted: 09/06/2014] [Indexed: 06/04/2023]
Abstract
The proteinaceous elicitor cryptogein triggers defence reactions in Nicotiana tabacum (tobacco) through a signalling cascade, including the early production of reactive oxygen species (ROS) by the plasma membrane (PM)-located tobacco respiratory burst oxidase homologue D (NtRbohD). Sphingolipid long-chain bases (LCBs) are emerging as potent positive regulators of plant defence-related mechanisms. This led us to question whether both LCBs and their phosphorylated derivatives (LCB-Ps) are involved in the early signalling process triggered by cryptogein in tobacco BY-2 cells. Here, we showed that cryptogein-induced ROS production was inhibited by LCB kinase (LCBK) inhibitors. Additionally, Arabidopsis thaliana sphingosine kinase 1 and exogenously supplied LCB-Ps increased cryptogein-induced ROS production, whereas exogenously supplied LCBs had a strong opposite effect, which was not driven by a reduction in cellular viability. Immunogold-electron microscopy assay also revealed that LCB-Ps are present in the PM, which fits well with the presence of a high LCBK activity associated with this fraction. Our data demonstrate that LCBs and LCB-Ps differentially regulate cryptogein-induced ROS production in tobacco BY-2 cells, and support a model in which a cooperative synergism between LCBK/LCB-Ps and NtRbohD/ROS in the cryptogein signalling pathway is likely at the PM in tobacco BY-2 cells.
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Affiliation(s)
- Sylvie Coursol
- INRA, Institut Jean-Pierre Bourgin, UMR 1318, ERL CNRS 3559, Saclay Plant Sciences, RD10, F-78026, Versailles, France
- AgroParisTech, Institut Jean-Pierre Bourgin, UMR 1318, ERL CNRS 3559, Saclay Plant Sciences, RD10, F-78026, Versailles, France
| | - Jérôme Fromentin
- INRA, UMR 1347 Agroécologie, ERL CNRS 6300, BP 86510, F-21065, Dijon Cedex, France
| | - Elodie Noirot
- INRA, UMR 1347 Agroécologie, ERL CNRS 6300, BP 86510, F-21065, Dijon Cedex, France
| | - Christian Brière
- Laboratoire de Recherche en Sciences Végétales, UMR 5546, Université de Toulouse, BP 42617, F-31326, Castanet-Tolosan, France
- Laboratoire de Recherche en Sciences Végétales, CNRS, UMR 5546, BP 42617, F-31326, Castanet-Tolosan, France
| | - Franck Robert
- INRA, UMR 1347 Agroécologie, ERL CNRS 6300, BP 86510, F-21065, Dijon Cedex, France
| | - Johanne Morel
- INRA, UMR 1347 Agroécologie, ERL CNRS 6300, BP 86510, F-21065, Dijon Cedex, France
| | - Yun-Kuan Liang
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Jeannine Lherminier
- INRA, UMR 1347 Agroécologie, ERL CNRS 6300, BP 86510, F-21065, Dijon Cedex, France
| | - Françoise Simon-Plas
- INRA, UMR 1347 Agroécologie, ERL CNRS 6300, BP 86510, F-21065, Dijon Cedex, France
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Kulik A, Noirot E, Grandperret V, Bourque S, Fromentin J, Salloignon P, Truntzer C, Dobrowolska G, Simon-Plas F, Wendehenne D. Interplays between nitric oxide and reactive oxygen species in cryptogein signalling. Plant Cell Environ 2015; 38:331-48. [PMID: 24506708 DOI: 10.1111/pce.12295] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [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: 06/27/2013] [Accepted: 01/20/2014] [Indexed: 05/09/2023]
Abstract
Nitric oxide (NO) has many functions in plants. Here, we investigated its interplays with reactive oxygen species (ROS) in the defence responses triggered by the elicitin cryptogein. The production of NO induced by cryptogein in tobacco cells was partly regulated through a ROS-dependent pathway involving the NADPH oxidase NtRBOHD. In turn, NO down-regulated the level of H2O2. Both NO and ROS synthesis appeared to be under the control of type-2 histone deacetylases acting as negative regulators of cell death. Occurrence of an interplay between NO and ROS was further supported by the finding that cryptogein triggered a production of peroxynitrite (ONOO(-)). Next, we showed that ROS, but not NO, negatively regulate the intensity of activity of the cryptogein-induced protein kinase NtOSAK. Furthermore, using a DNA microarray approach, we identified 15 genes early induced by cryptogein via NO. A part of these genes was also modulated by ROS and encoded proteins showing sequence identity to ubiquitin ligases. Their expression appeared to be negatively regulated by ONOO(-), suggesting that ONOO(-) mitigates the effects of NO and ROS. Finally, we provided evidence that NO required NtRBOHD activity for inducing cell death, thus confirming previous assumption that ROS channel NO through cell death pathways.
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Affiliation(s)
- Anna Kulik
- INRA, UMR 1347 Agroécologie, Pôle Mécanisme et Gestion des Interactions Plantes-Microorganismes - ERL CNRS 6300, 17 rue Sully, BP 86510, 21065, Dijon cédex, France
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Anca IA, Fromentin J, Bui QT, Mhiri C, Grandbastien MA, Simon-Plas F. Different tobacco retrotransposons are specifically modulated by the elicitor cryptogein and reactive oxygen species. J Plant Physiol 2014; 171:1533-40. [PMID: 25128785 DOI: 10.1016/j.jplph.2014.07.003] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 07/06/2014] [Accepted: 07/07/2014] [Indexed: 05/08/2023]
Abstract
Interactions of plant retrotransposons with different steps of biotic and abiotic stress-associated signaling cascades are still poorly understood. We perform here a finely tuned comparison of four tobacco retrotransposons (Tnt1, Tnt2, Queenti, and Tto1) responses to the plant elicitor cryptogein. We demonstrate that basal transcript levels in cell suspensions and plant leaves as well as the activation during the steps of defense signaling events are specific to each retrotransposon. Using antisense NtrbohD lines, we show that NtrbohD-dependent reactive oxygen species (ROS) production might act as negative regulator of retrotransposon activation.
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Affiliation(s)
- Iulia-Andra Anca
- INRA, UMR 1347 Agroécologie, ERL CNRS 6300, 17 Rue Sully, BP 86510, 21065 Dijon Cedex, France
| | - Jérôme Fromentin
- INRA, UMR 1347 Agroécologie, ERL CNRS 6300, 17 Rue Sully, BP 86510, 21065 Dijon Cedex, France
| | - Quynh Trang Bui
- Institut Jean-Pierre Bourgin (IJPB), UMR 1318 INRA/AgroParisTech, INRA-Versailles, 78026 Versailles, France
| | - Corinne Mhiri
- Institut Jean-Pierre Bourgin (IJPB), UMR 1318 INRA/AgroParisTech, INRA-Versailles, 78026 Versailles, France
| | - Marie-Angèle Grandbastien
- Institut Jean-Pierre Bourgin (IJPB), UMR 1318 INRA/AgroParisTech, INRA-Versailles, 78026 Versailles, France
| | - Françoise Simon-Plas
- INRA, UMR 1347 Agroécologie, ERL CNRS 6300, 17 Rue Sully, BP 86510, 21065 Dijon Cedex, France.
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Stanislas T, Bouyssie D, Rossignol M, Vesa S, Fromentin J, Morel J, Pichereaux C, Monsarrat B, Simon-Plas F. Quantitative proteomics reveals a dynamic association of proteins to detergent-resistant membranes upon elicitor signaling in tobacco. Mol Cell Proteomics 2009; 8:2186-98. [PMID: 19525550 PMCID: PMC2742443 DOI: 10.1074/mcp.m900090-mcp200] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [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: 02/19/2009] [Revised: 06/02/2009] [Indexed: 11/06/2022] Open
Abstract
A large body of evidence from the past decade supports the existence, in membrane from animal and yeast cells, of functional microdomains playing important roles in protein sorting, signal transduction, or infection by pathogens. In plants, as previously observed for animal microdomains, detergent-resistant fractions, enriched in sphingolipids and sterols, were isolated from plasma membrane. A characterization of their proteic content revealed their enrichment in proteins involved in signaling and response to biotic and abiotic stress and cell trafficking suggesting that these domains were likely to be involved in such physiological processes. In the present study, we used (14)N/(15)N metabolic labeling to compare, using a global quantitative proteomics approach, the content of tobacco detergent-resistant membranes extracted from cells treated or not with cryptogein, an elicitor of defense reaction. To analyze the data, we developed a software allowing an automatic quantification of the proteins identified. The results obtained indicate that, although the association to detergent-resistant membranes of most proteins remained unchanged upon cryptogein treatment, five proteins had their relative abundance modified. Four proteins related to cell trafficking (four dynamins) were less abundant in the detergent-resistant membrane fraction after cryptogein treatment, whereas one signaling protein (a 14-3-3 protein) was enriched. This analysis indicates that plant microdomains could, like their animal counterpart, play a role in the early signaling process underlying the setup of defense reaction. Furthermore proteins identified as differentially associated to tobacco detergent-resistant membranes after cryptogein challenge are involved in signaling and vesicular trafficking as already observed in similar studies performed in animal cells upon biological stimuli. This suggests that the ways by which the dynamic association of proteins to microdomains could participate in the regulation of the signaling process may be conserved between plant and animals.
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Affiliation(s)
- Thomas Stanislas
- From the ‡Institut National de la Recherche Agronomique (INRA), Unité Mixte de Recherche (UMR) Plante Microbe Environnement 1088/CNRS 5184/Université de Bourgogne, 17 Rue Sully, BP 86510 F-21000 Dijon, France
| | - David Bouyssie
- ¶Institut de Pharmacologie et de Biologie Structurale (IPBS), CNRS, 205 route de Narbonne, F-31077 Toulouse, France
- ‖IPBS, Université Paul Sabatier, Université de Toulouse, F-31077 Toulouse, France, and
| | - Michel Rossignol
- ¶Institut de Pharmacologie et de Biologie Structurale (IPBS), CNRS, 205 route de Narbonne, F-31077 Toulouse, France
- ‖IPBS, Université Paul Sabatier, Université de Toulouse, F-31077 Toulouse, France, and
- **IPBS, Institut Fédératif de Recherche 40 Plateforme Protéomique, 205 route de Narbonne, F-31077 Toulouse, France
| | - Simona Vesa
- From the ‡Institut National de la Recherche Agronomique (INRA), Unité Mixte de Recherche (UMR) Plante Microbe Environnement 1088/CNRS 5184/Université de Bourgogne, 17 Rue Sully, BP 86510 F-21000 Dijon, France
| | - Jérôme Fromentin
- From the ‡Institut National de la Recherche Agronomique (INRA), Unité Mixte de Recherche (UMR) Plante Microbe Environnement 1088/CNRS 5184/Université de Bourgogne, 17 Rue Sully, BP 86510 F-21000 Dijon, France
| | - Johanne Morel
- From the ‡Institut National de la Recherche Agronomique (INRA), Unité Mixte de Recherche (UMR) Plante Microbe Environnement 1088/CNRS 5184/Université de Bourgogne, 17 Rue Sully, BP 86510 F-21000 Dijon, France
| | - Carole Pichereaux
- ¶Institut de Pharmacologie et de Biologie Structurale (IPBS), CNRS, 205 route de Narbonne, F-31077 Toulouse, France
- ‖IPBS, Université Paul Sabatier, Université de Toulouse, F-31077 Toulouse, France, and
- **IPBS, Institut Fédératif de Recherche 40 Plateforme Protéomique, 205 route de Narbonne, F-31077 Toulouse, France
| | - Bernard Monsarrat
- ¶Institut de Pharmacologie et de Biologie Structurale (IPBS), CNRS, 205 route de Narbonne, F-31077 Toulouse, France
- ‖IPBS, Université Paul Sabatier, Université de Toulouse, F-31077 Toulouse, France, and
| | - Françoise Simon-Plas
- From the ‡Institut National de la Recherche Agronomique (INRA), Unité Mixte de Recherche (UMR) Plante Microbe Environnement 1088/CNRS 5184/Université de Bourgogne, 17 Rue Sully, BP 86510 F-21000 Dijon, France
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Lherminier J, Elmayan T, Fromentin J, Elaraqui KT, Vesa S, Morel J, Verrier JL, Cailleteau B, Blein JP, Simon-Plas F. NADPH oxidase-mediated reactive oxygen species production: subcellular localization and reassessment of its role in plant defense. Mol Plant Microbe Interact 2009; 22:868-81. [PMID: 19522569 DOI: 10.1094/mpmi-22-7-0868] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Chemiluminescence detection of reactive oxygen species (ROS) triggered in tobacco BY-2 cells by the fungal elicitor cryptogein was previously demonstrated to be abolished in cells transformed with an antisense construct of the plasma membrane NADPH oxidase, NtrbohD. Here, using electron microscopy, it has been confirmed that the first hydrogen peroxide production occurring a few minutes after challenge of tobacco cells with cryptogein is plasma membrane located and NtrbohD mediated. Furthermore, the presence of NtrbohD in detergent-resistant membrane fractions could be associated with the presence of NtrbohD-mediated hydrogen peroxide patches along the plasma membrane. Comparison of the subcellular localization of ROS in wild-type tobacco and in plants transformed with antisense constructs of NtrbohD revealed that this enzyme is also responsible for the hydrogen peroxide production occurring at the plasma membrane after infiltration of tobacco leaves with cryptogein. Finally, the reactivity of wild-type and transformed plants to the elicitor and their resistance against the pathogenic oomycete Phytophthora parasitica were examined. NtrbohD-mediated hydrogen peroxide production does not seem determinant for either hypersensitive response development or the establishment of acquired resistance but it is most likely involved in the signaling pathways associated with the protection of the plant cell.
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Leborgne-Castel N, Lherminier J, Der C, Fromentin J, Houot V, Simon-Plas F. The plant defense elicitor cryptogein stimulates clathrin-mediated endocytosis correlated with reactive oxygen species production in bright yellow-2 tobacco cells. Plant Physiol 2008; 146:1255-66. [PMID: 18184734 PMCID: PMC2259092 DOI: 10.1104/pp.107.111716] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2007] [Accepted: 12/21/2007] [Indexed: 05/18/2023]
Abstract
The plant defense elicitor cryptogein triggers well-known biochemical events of early signal transduction at the plasma membrane of tobacco (Nicotiana tabacum) cells, but microscopic observations of cell responses related to these early events were lacking. We determined that internalization of the lipophilic dye FM4-64, which is a marker of endocytosis, is stimulated a few minutes after addition of cryptogein to tobacco Bright Yellow-2 (BY-2) cells. This stimulation is specific to the signal transduction pathway elicited by cryptogein because a lipid transfer protein, which binds to the same receptor as cryptogein but without triggering signaling, does not increase endocytosis. To define the nature of the stimulated endocytosis, we quantified clathrin-coated pits (CCPs) forming on the plasma membrane of BY-2 cells. A transitory stimulation of this morphological event by cryptogein occurs within the first 15 min. In the presence of cryptogein, increases in both FM4-64 internalization and clathrin-mediated endocytosis are specifically blocked upon treatment with 5 microm tyrphostin A23, a receptor-mediated endocytosis inhibitor. The kinetics of the transient increase in CCPs at the plasma membrane coincides with that of transitory reactive oxygen species (ROS) production occurring within the first 15 min after elicitation. Moreover, in BY-2 cells expressing NtrbohD antisense cDNA, which are unable to produce ROS when treated with cryptogein, the CCP stimulation is inhibited. These results indicate that the very early endocytic process induced by cryptogein in tobacco is due, at least partly, to clathrin-mediated endocytosis and is dependent on ROS production by the NADPH oxidase NtrbohD.
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Elmayan T, Fromentin J, Riondet C, Alcaraz G, Blein JP, Simon-Plas F. Regulation of reactive oxygen species production by a 14-3-3 protein in elicited tobacco cells. Plant Cell Environ 2007; 30:722-32. [PMID: 17470148 DOI: 10.1111/j.1365-3040.2007.01660.x] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
The regulation of the system responsible for the production of reactive oxygen species (ROS) during plant-micro-organism interaction is still largely unknown. The protein NtrbohD has been recently demonstrated as the plasma membrane oxidase responsible for ROS production in elicited tobacco cells. Here, its C-terminus part was used as a bait in a two-hybrid screen in order to identify putative regulators of this system. This led to the isolation of a cDNA coding for a member of the 14-3-3 protein family. The corresponding transcript was induced after infiltration of tobacco leaves with the fungal elicitor cryptogein. Tobacco cells transformed with an antisense construct of this 14-3-3 no longer accumulated ROS, which constitutes a functional validation of the two-hybrid screen. This work provides new insights to the understanding of the regulation of ROS production in a signalling context and gives a new light to the possible role of 14-3-3 proteins in plant-micro-organisms interactions.
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Affiliation(s)
- Taline Elmayan
- Unité Mixte de Recherche Plante-Microbe-Environnement INRA 1088/CNRS 5184/Université de Bourgogne, BP 86510, Dijon Cedex, France
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Mohamed N, Lherminier J, Farmer MJ, Fromentin J, Béno N, Houot V, Milat ML, Blein JP. Defense Responses in Grapevine Leaves Against Botrytis cinerea Induced by Application of a Pythium oligandrum Strain or Its Elicitin, Oligandrin, to Roots. Phytopathology 2007; 97:611-20. [PMID: 18943581 DOI: 10.1094/phyto-97-5-0611] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
ABSTRACT Pythium oligandrum is known to display antagonistic activities against several species of pathogenic fungi. It also produces an elicitor of plant defense named oligandrin, which belongs to the elicitin family (10-kDa proteins synthesized by Phytophthora and Pythium species). Here, the potential of P. oligandrum or its purified elicitin to limit the progression of B. cinerea on grapevine leaf and the resulting plant-microorganism interactions are described. P. oligandrum or oligandrin were applied to roots, and changes in the ultrastructure and at the molecular level were examined. When B. cinerea was applied to leaves of pretreated plants, leaf invasion was limited and the protection level reached about 75%. On leaf tissues surrounding B. cinerea inoculation, modifications of cuticle thickness, accumulation of phenolic compounds, and cell wall apposition were observed, indicating that grapevine can be considered reactive to elicitins. No macroscopic hypersensitive reaction associated with the elicitation treatment was observed. At the molecular level, the expression of three defense-related genes (LTP-1, beta-1,3-glucanase, and stilbene synthase) was studied. RNAs isolated from B. cinerea-infected leaves of grapevine challenged or not with P. oligandrum or oligandrin were analyzed by real-time reverse transcription-polymerase chain reaction. In grapevine leaves, LTP-1 gene expression was enhanced in response to oligandrin, and RNA transcript levels of beta-1,3-glucanase and stilbene synthase increased in response to all treatments with different magnitude. Taken together, these results open new discussion on the concept of plant reactivity to elicitins, which has until now, been mainly based on plant hypersensitive responses.
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Morel J, Claverol S, Mongrand S, Furt F, Fromentin J, Bessoule JJ, Blein JP, Simon-Plas F. Proteomics of plant detergent-resistant membranes. Mol Cell Proteomics 2006; 5:1396-411. [PMID: 16648627 DOI: 10.1074/mcp.m600044-mcp200] [Citation(s) in RCA: 196] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
A large body of evidence from the past decade supports the existence, in membrane from animal and yeast cells, of functional microdomains that play important roles in protein sorting, signal transduction, or infection by pathogens. Recent reports demonstrated the presence, in plants, of detergent-resistant fractions isolated from plasma membrane. Analysis of the lipidic composition of this fraction revealed its enrichment in sphingolipids and sterols and depletion in phospho- and glycerolipids as previously observed for animal microdomains. One-dimensional gel electrophoresis experiments indicated that these detergent-resistant fractions are able to recruit a specific set of plasma membrane proteins and exclude others. In the present study, we used mass spectrometry to give an extensive description of a tobacco plasma membrane fraction resistant to solubilization with Triton X-100. This led to the identification of 145 proteins whose functional and physicochemical characteristics were analyzed in silico. Parameters such as isoelectric point, molecular weight, number and length of transmembrane segments, or global hydrophobicity were analyzed and compared with the data available concerning plant plasma membrane proteins. Post-translational modifications, such as myristoylation, palmitoylation, or presence of a glycosylphosphatidylinositol anchor, were examined in relation to the presence of the corresponding proteins in these microdomains. From a functional point of view, this analysis indicated that if a primary function of the plasma membrane, such as transport, seems under-represented in the detergent-resistant fraction, others undergo a significant increase of their relative importance. Among these are signaling and response to biotic and abiotic stress, cellular trafficking, and cell wall metabolism. This suggests that these domains are likely to constitute, as in animal cells, signaling platforms involved in these physiological functions.
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Affiliation(s)
- Johanne Morel
- Laboratoire de Phytopharmacie, Unité Mixte de Recherche (UMR) 692 Institut National de la Recherche Agronomique (INRA)/Ecole Nationale d'Enseignement Supérieur Agronomique de Dijon (ENESAD)/Université de Bourgogne, BP 86510, 21065 Dijon Cedex, France
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Bourée P, Grimault E, Fromentin J, Tandjaoui-Lambiotte H, Tazi A, Battesti JP. [Visceral larva migrans in adults with severe pulmonary manifestations]. Presse Med 1997; 26:70-2. [PMID: 9082413] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Toxocariosis, the most frequent cause of visceral larva migrans, is usually a disease of children due to ingestion of eggs from the roundworm of dogs (Toxocara canis). Clinical expression varies from an symptomatic state to fuminant disorders; hepatomegaly with fever is frequent. Severe symptoms (rarely in adults) may occur. CASE REPORT A 42-year-old male with no past medical history complained of sudden onset pulmonary disorders. Laboratory findings included eosinophilia on blood tests, a severe respiratory obstructive syndrome and positive serum tests for Toxocara canis. All clinical and biological abnormalities regressed in a few weeks. DISCUSSION Diagnosis of visceral larva migrans is exceptional in adults and can only be proven by positive serological tests. Correct treatment remains under debate.
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Affiliation(s)
- P Bourée
- Département des Maladies parasitaires et tropicales, Hôpital de Bicêtre, Le Kremlin-Bicêtre
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