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Inès D, Courty PE, Wendehenne D, Rosnoblet C. CDC48 in plants and its emerging function in plant immunity. TRENDS IN PLANT SCIENCE 2024; 29:786-798. [PMID: 38218650 DOI: 10.1016/j.tplants.2023.12.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 12/14/2023] [Accepted: 12/14/2023] [Indexed: 01/15/2024]
Abstract
Protein homeostasis, namely the balance between protein synthesis and degradation, must be finely controlled to ensure cell survival, notably through the ubiquitin-proteasome system (UPS). In all species, including plants, homeostasis is disrupted by biotic and abiotic stresses. A key player in the maintenance of protein balance, the protein CDC48, shows emerging functions in plants, particularly in response to biotic stress. In this review on CDC48 in plants, we detail its highly conserved structure, describe a gene expansion that is only present in Viridiplantae, discuss its various functions and regulations, and finally highlight its recruitment, still not clear, during the plant immune response.
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Affiliation(s)
- Damien Inès
- Agroécologie, Institut National de Recherche pour l'Agriculture, l'Alimentation, et l'Environnement (INRAE), Institut Agro, Université de Bourgogne, Université Bourgogne-Franche-Comté, Dijon, France
| | - Pierre-Emmanuel Courty
- Agroécologie, Institut National de Recherche pour l'Agriculture, l'Alimentation, et l'Environnement (INRAE), Institut Agro, Université de Bourgogne, Université Bourgogne-Franche-Comté, Dijon, France
| | - David Wendehenne
- Agroécologie, Institut National de Recherche pour l'Agriculture, l'Alimentation, et l'Environnement (INRAE), Institut Agro, Université de Bourgogne, Université Bourgogne-Franche-Comté, Dijon, France
| | - Claire Rosnoblet
- Agroécologie, Institut National de Recherche pour l'Agriculture, l'Alimentation, et l'Environnement (INRAE), Institut Agro, Université de Bourgogne, Université Bourgogne-Franche-Comté, Dijon, France.
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Quintana-Escobar AO, Bojórquez-Velázquez E, Ruiz-May E, Loyola-Vargas VM. Proteomic Approach during the Induction of Somatic Embryogenesis in Coffea canephora. PLANTS (BASEL, SWITZERLAND) 2023; 12:4095. [PMID: 38140424 PMCID: PMC10748034 DOI: 10.3390/plants12244095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 10/21/2023] [Accepted: 12/01/2023] [Indexed: 12/24/2023]
Abstract
Plant growth regulators (PGR) are essential for somatic embryogenesis (SE) in different species, and Coffea canephora is no exception. In our study model, previously, we have been able to elucidate the participation of various genes involved in SE by using different strategies; however, until now, we have not used a proteomic approach. This research seeks to contribute to understanding the primary cellular pathways involved in developing SE in C. canephora. The process of our model consists of two stages: (1) preconditioning in MS medium with auxin (NAA) and cytokinin (KIN), and (2) induction in Yasuda liquid medium added with cytokinin (BA). Therefore, in this study, we analyzed different days of the SE induction process using shotgun label-free proteomics. An amount of 1630 proteins was found among different sampling days of the process, of which the majority were accumulated during the induction stage. We found that some of the most enriched pathways during this process were the biosynthesis of amino acids and secondary metabolites. Eighteen proteins were found related to auxin homeostasis and two to cytokinin metabolism, such as ABC, BIG, ILR, LOG, and ARR. Ten proteins and transcription factors related to SE were also identified, like SERK1, SKP1, nuclear transcription factor Y, MADS-box, and calreticulin, and 19 related to other processes of plant development, among which the 14-3-3 and PP2A proteins stand out. This is the first report on the proteomic approach to elucidate the mechanisms that operate during the induction of SE in C. canephora. So, our findings provide the groundwork for future, more in-depth research. Data are available via ProteomeXchange Consortium via the PRIDE partner repository with the dataset identifier PXD047172.
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Affiliation(s)
- Ana Odetth Quintana-Escobar
- Unidad de Bioquímica y Biología Molecular de Plantas, Centro de Investigación Científica de Yucatán, Calle 43, No. 130 x 32 y 34, Mérida CP 97205, Yucatán, Mexico;
| | - Esaú Bojórquez-Velázquez
- Red de Estudios Moleculares Avanzados, Clúster Científico y Tecnológico BioMimic®, Instituto de Ecología A.C. (INECOL), Carretera Antigua a Coatepec No. 351, Congregación el Haya, Xalapa CP 91070, Veracruz, Mexico; (E.B.-V.); (E.R.-M.)
| | - Eliel Ruiz-May
- Red de Estudios Moleculares Avanzados, Clúster Científico y Tecnológico BioMimic®, Instituto de Ecología A.C. (INECOL), Carretera Antigua a Coatepec No. 351, Congregación el Haya, Xalapa CP 91070, Veracruz, Mexico; (E.B.-V.); (E.R.-M.)
| | - Víctor Manuel Loyola-Vargas
- Unidad de Bioquímica y Biología Molecular de Plantas, Centro de Investigación Científica de Yucatán, Calle 43, No. 130 x 32 y 34, Mérida CP 97205, Yucatán, Mexico;
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Roudaire T, Marzari T, Landry D, Löffelhardt B, Gust AA, Jermakow A, Dry I, Winckler P, Héloir MC, Poinssot B. The grapevine LysM receptor-like kinase VvLYK5-1 recognizes chitin oligomers through its association with VvLYK1-1. FRONTIERS IN PLANT SCIENCE 2023; 14:1130782. [PMID: 36818830 PMCID: PMC9932513 DOI: 10.3389/fpls.2023.1130782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
The establishment of defense reactions to protect plants against pathogens requires the recognition of invasion patterns (IPs), mainly detected by plasma membrane-bound pattern recognition receptors (PRRs). Some IPs, also termed elicitors, are used in several biocontrol products that are gradually being developed to reduce the use of chemicals in agriculture. Chitin, the major component of fungal cell walls, as well as its deacetylated derivative, chitosan, are two elicitors known to activate plant defense responses. However, recognition of chitooligosaccharides (COS) in Vitis vinifera is still poorly understood, hampering the improvement and generalization of protection tools for this important crop. In contrast, COS perception in the model plant Arabidopsis thaliana is well described and mainly relies on a tripartite complex formed by the cell surface lysin motif receptor-like kinases (LysM-RLKs) AtLYK1/CERK1, AtLYK4 and AtLYK5, the latter having the strongest affinity for COS. In grapevine, COS perception has for the moment only been demonstrated to rely on two PRRs VvLYK1-1 and VvLYK1-2. Here, we investigated additional players by overexpressing in Arabidopsis the two putative AtLYK5 orthologs from grapevine, VvLYK5-1 and VvLYK5-2. Expression of VvLYK5-1 in the atlyk4/5 double mutant background restored COS sensitivity, such as chitin-induced MAPK activation, defense gene expression, callose deposition and conferred non-host resistance to grapevine downy mildew (Erysiphe necator). Protein-protein interaction studies conducted in planta revealed a chitin oligomer-triggered interaction between VvLYK5-1 and VvLYK1-1. Interestingly, our results also indicate that VvLYK5-1 mediates the perception of chitin but not chitosan oligomers showing a part of its specificity.
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Affiliation(s)
- Thibault Roudaire
- Agroécologie, CNRS, INRAE, Institut Agro, Univ. Bourgogne, Univ. Bourgogne Franche-Comté, Dijon, France
| | - Tania Marzari
- Agroécologie, CNRS, INRAE, Institut Agro, Univ. Bourgogne, Univ. Bourgogne Franche-Comté, Dijon, France
| | - David Landry
- LIPME, Université de Toulouse, INRAE, CNRS, Castanet-Tolosan, France
| | - Birgit Löffelhardt
- Department of Plant Biochemistry, University of Tübingen, Center for Plant Molecular Biology, Tübingen, Germany
| | - Andrea A. Gust
- Department of Plant Biochemistry, University of Tübingen, Center for Plant Molecular Biology, Tübingen, Germany
| | - Angelica Jermakow
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), Adelaide, SA, Australia
| | - Ian Dry
- Commonwealth Scientific and Industrial Research Organisation (CSIRO), Adelaide, SA, Australia
| | - Pascale Winckler
- Dimacell Imaging Facility, PAM UMR A 02.102, Institut Agro, Univ. Bourgogne, Univ. Bourgogne Franche-Comté, Dijon, France
| | - Marie-Claire Héloir
- Agroécologie, CNRS, INRAE, Institut Agro, Univ. Bourgogne, Univ. Bourgogne Franche-Comté, Dijon, France
| | - Benoit Poinssot
- Agroécologie, CNRS, INRAE, Institut Agro, Univ. Bourgogne, Univ. Bourgogne Franche-Comté, Dijon, France
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4
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Molecular convergence by differential domain acquisition is a hallmark of chromosomal passenger complex evolution. Proc Natl Acad Sci U S A 2022; 119:e2200108119. [PMID: 36227914 DOI: 10.1073/pnas.2200108119] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The chromosomal passenger complex (CPC) is a heterotetrameric regulator of eukaryotic cell division, consisting of an Aurora-type kinase and a scaffold built of INCENP, Borealin, and Survivin. While most CPC components are conserved across eukaryotes, orthologs of the chromatin reader Survivin have previously only been found in animals and fungi, raising the question of how its essential role is carried out in other eukaryotes. By characterizing proteins that bind to the Arabidopsis Borealin ortholog, we identified BOREALIN RELATED INTERACTOR 1 and 2 (BORI1 and BORI2) as redundant Survivin-like proteins in the context of the CPC in plants. Loss of BORI function is lethal and a reduced expression of BORIs causes severe developmental defects. Similar to Survivin, we find that the BORIs bind to phosphorylated histone H3, relevant for correct CPC association with chromatin. However, this interaction is not mediated by a BIR domain as in previously recognized Survivin orthologs but by an FHA domain, a widely conserved phosphate-binding module. We find that the unifying criterion of Survivin-type proteins is a helix that facilitates complex formation with the other two scaffold components and that the addition of a phosphate-binding domain, necessary for concentration at the inner centromere, evolved in parallel in different eukaryotic groups. Using sensitive similarity searches, we find conservation of this helical domain between animals and plants and identify the missing CPC component in most eukaryotic supergroups. Interestingly, we also detect Survivin orthologs without a defined phosphate-binding domain, likely reflecting the situation in the last eukaryotic common ancestor.
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Yang L, Gao C, Jiang L. Leucine-rich repeat receptor-like protein kinase AtORPK1 promotes oxidative stress resistance in an AtORPK1-AtKAPP mediated module in Arabidopsis. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2022; 315:111147. [PMID: 35067310 DOI: 10.1016/j.plantsci.2021.111147] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 11/20/2021] [Accepted: 12/06/2021] [Indexed: 06/14/2023]
Abstract
Signal perception and transduction by the cell surface receptors are essential for cell-cell communication and plant response to abiotic stress. In this work, a previously uncharacterized leucine-rich repeat receptor-like kinase (LRR-RLK), Oxidative-stress Related Protein Kinase 1 (AtORPK1), was isolated from Arabidopsis thaliana, and its biological function was investigated in protoplasts, BY-2 cells and transgenic Arabidopsis plants. AtORPK1 is ubiquitously expressed in various tissues and organs of Arabidopsis at different developmental stages. Loss-of-function of AtORPK1 reduced, whereas overexpression of AtORPK1 increased, the oxidative stress resistance and oxidative stress responsive gene expression in orpk1 mutant and AtORPK1 transgenic Arabidopsis. Sub-cellular localization analyses revealed that AtORPK1 is localized to plasma membrane and endosomes, and the specific localization was significantly affected by hydrogen peroxide (H2O2) treatment. Further GFP, CFP, YFP and RFP fusion protein co-localization and FRET analyses demonstrated that AtORPK1 interacted and co-localized with AtKAPP, a common downstream phosphatase, in the enlarged endosomes such as prevacuolar compartments. Our results indicate that AtORPK1 functions as a positive molecular link between the oxidative stress signaling and antioxidant stress in plants.
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Affiliation(s)
- Lei Yang
- The Engineering Research Institute of Agriculture and Forestry, Ludong University, Yantai, 264025, PR China; School of Life Sciences, Centre for Cell and Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China.
| | - Caiji Gao
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China.
| | - Liwen Jiang
- School of Life Sciences, Centre for Cell and Developmental Biology and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China; Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, 518057, PR China.
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Zhao X, Li F, Li K. The 14-3-3 proteins: regulators of plant metabolism and stress responses. PLANT BIOLOGY (STUTTGART, GERMANY) 2021; 23:531-539. [PMID: 33811408 DOI: 10.1111/plb.13268] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Accepted: 03/22/2021] [Indexed: 06/12/2023]
Abstract
The 14-3-3 proteins bind to and modulate the activity of phosphorylated proteins that regulate a variety of metabolic processes in plants. Over the past decade interest in the plant 14-3-3 field has increased dramatically, mainly due to the vast number of mechanisms by which 14-3-3 proteins regulate metabolism. As this field develops, it is essential to understand the role of these proteins in metabolic and stress responses. This review summarizes current knowledge about 14-3-3 proteins in plants, including their molecular structure and function, regulatory mechanism and roles in carbon and nitrogen metabolism and stress responses. We begin with a molecular structural analysis of 14-3-3 proteins, which describes the basic principles of 14-3-3 function, and then discuss the regulatory mechanisms and roles in carbon and nitrogen metabolism of 14-3-3 proteins. We conclude with a summary of the 14-3-3 response to biotic stress and abiotic stress.
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Affiliation(s)
- X Zhao
- College of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - F Li
- College of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - K Li
- College of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
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Ao K, Tong M, Li L, Lüdke D, Lipka V, Chen S, Wiermer M, Li X. SCF SNIPER7 controls protein turnover of unfoldase CDC48A to promote plant immunity. THE NEW PHYTOLOGIST 2021; 229:2795-2811. [PMID: 33156518 DOI: 10.1111/nph.17071] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 11/01/2020] [Indexed: 06/11/2023]
Abstract
The unfoldase CDC48 (Cell Division Cycle 48) is highly conserved in eukaryotes, serving as an AAA + ATPase to extract ubiquitinated proteins from large protein complexes and membranes. Although its biochemical properties have been studied extensively in yeast and animal systems, the biological roles and regulations of the plant CDC48s have been explored only recently. Here we describe the identification of a novel E3 ligase from the SNIPER (snc1-influencing plant E3 ligase reverse genetic) screen, which contributes to plant defense regulation by targeting CDC48A for degradation. SNIPER7 encodes an F-box protein and its overexpression leads to autoimmunity. We identified CDC48s as interactors of SNIPER7 through immunoprecipitation followed by mass spectrometry proteomic analysis. SNIPER7 overexpression lines phenocopy the autoimmune mutant Atcdc48a-4. Furthermore, CDC48A protein levels are reduced or stabilized when SNIPER7 is overexpressed or inhibited, respectively, suggesting that CDC48A is the ubiquitination substrate of SCFSNIPER7 . Taken together, this study reveals a new mechanism where a SCFSNIPER7 complex regulates CDC48 unfoldase levels and modulates immune output.
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Affiliation(s)
- Kevin Ao
- Michael Smith Laboratories, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
- Department of Botany, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
| | - Meixuezi Tong
- Michael Smith Laboratories, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
- Department of Botany, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
| | - Lin Li
- National Institute of Biological Sciences, Beijing, 102206, China
| | - Daniel Lüdke
- Molecular Biology of Plant-Microbe Interactions Research Group, Albrecht-von-Haller-Institute for Plant Sciences, University of Goettingen, Goettingen, D-37077, Germany
| | - Volker Lipka
- Department of Plant Cell Biology, Albrecht-von-Haller-Institute for Plant Sciences, University of Goettingen, Goettingen, D-37077, Germany
- Central Microscopy Facility of the Faculty of Biology and Psychology, University of Goettingen, Goettingen, D-37077, Germany
| | - She Chen
- National Institute of Biological Sciences, Beijing, 102206, China
| | - Marcel Wiermer
- Molecular Biology of Plant-Microbe Interactions Research Group, Albrecht-von-Haller-Institute for Plant Sciences, University of Goettingen, Goettingen, D-37077, Germany
| | - Xin Li
- Michael Smith Laboratories, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
- Department of Botany, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
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Dreyer A, Treffon P, Basiry D, Jozefowicz AM, Matros A, Mock HP, Dietz KJ. Function and Regulation of Chloroplast Peroxiredoxin IIE. Antioxidants (Basel) 2021; 10:antiox10020152. [PMID: 33494157 PMCID: PMC7909837 DOI: 10.3390/antiox10020152] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/28/2020] [Accepted: 01/13/2021] [Indexed: 01/14/2023] Open
Abstract
Peroxiredoxins (PRX) are thiol peroxidases that are highly conserved throughout all biological kingdoms. Increasing evidence suggests that their high reactivity toward peroxides has a function not only in antioxidant defense but in particular in redox regulation of the cell. Peroxiredoxin IIE (PRX-IIE) is one of three PRX types found in plastids and has previously been linked to pathogen defense and protection from protein nitration. However, its posttranslational regulation and its function in the chloroplast protein network remained to be explored. Using recombinant protein, it was shown that the peroxidatic Cys121 is subjected to multiple posttranslational modifications, namely disulfide formation, S-nitrosation, S-glutathionylation, and hyperoxidation. Slightly oxidized glutathione fostered S-glutathionylation and inhibited activity in vitro. Immobilized recombinant PRX-IIE allowed trapping and subsequent identification of interaction partners by mass spectrometry. Interaction with the 14-3-3 υ protein was confirmed in vitro and was shown to be stimulated under oxidizing conditions. Interactions did not depend on phosphorylation as revealed by testing phospho-mimicry variants of PRX-IIE. Based on these data it is proposed that 14-3-3υ guides PRX‑IIE to certain target proteins, possibly for redox regulation. These findings together with the other identified potential interaction partners of type II PRXs localized to plastids, mitochondria, and cytosol provide a new perspective on the redox regulatory network of the cell.
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Affiliation(s)
- Anna Dreyer
- Department of Biochemistry and Physiology of Plants, Faculty of Biology, University of Bielefeld, 33615 Bielefeld, Germany; (A.D.); (P.T.); (D.B.)
| | - Patrick Treffon
- Department of Biochemistry and Physiology of Plants, Faculty of Biology, University of Bielefeld, 33615 Bielefeld, Germany; (A.D.); (P.T.); (D.B.)
| | - Daniel Basiry
- Department of Biochemistry and Physiology of Plants, Faculty of Biology, University of Bielefeld, 33615 Bielefeld, Germany; (A.D.); (P.T.); (D.B.)
| | - Anna Maria Jozefowicz
- Applied Biochemistry Group, Leibniz Institute for Plant Genetics and Crop Plant Research (IPK), 06466 Gatersleben, Germany; (A.M.J.); (A.M.); (H.-P.M.)
| | - Andrea Matros
- Applied Biochemistry Group, Leibniz Institute for Plant Genetics and Crop Plant Research (IPK), 06466 Gatersleben, Germany; (A.M.J.); (A.M.); (H.-P.M.)
| | - Hans-Peter Mock
- Applied Biochemistry Group, Leibniz Institute for Plant Genetics and Crop Plant Research (IPK), 06466 Gatersleben, Germany; (A.M.J.); (A.M.); (H.-P.M.)
| | - Karl-Josef Dietz
- Department of Biochemistry and Physiology of Plants, Faculty of Biology, University of Bielefeld, 33615 Bielefeld, Germany; (A.D.); (P.T.); (D.B.)
- Correspondence: ; Tel.: +49-521-106-5589
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Gateau H, Blanckaert V, Veidl B, Burlet-Schiltz O, Pichereaux C, Gargaros A, Marchand J, Schoefs B. Application of pulsed electric fields for the biocompatible extraction of proteins from the microalga Haematococcus pluvialis. Bioelectrochemistry 2020; 137:107588. [PMID: 33147566 DOI: 10.1016/j.bioelechem.2020.107588] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 06/23/2020] [Accepted: 06/25/2020] [Indexed: 12/19/2022]
Abstract
This study aims to employ a pulsed electric field (PEF) treatment for the biocompatible (non-destructive) extraction of proteins from living cells of the green microalga Haematococcus pluvialis. Using a field strength of 1 kV cm-1, we achieved the extraction of 10.2 µg protein per mL of culture, which corresponded to 46% of the total amount of proteins that could be extracted by complete destructive extraction (i.e. the grinding of biomass with glass beads). We found that the extraction yield was not improved by stronger field strengths and was not dependent on the pulse frequency. A biocompatibility index (BI) was defined as the relative abundance of cells that remained alive after the PEF treatment. This index relied on measurements of several physiological parameters after a PEF treatment. It was found that at 1 kV cm-1 that cultures recovered after 72 h. Therefore, these PEF conditions constituted a good compromise between protein extraction efficiency and culture survival. To characterize the PEF treatment further at a molecular level, mass spectrometry-based proteomics analyses of PEF-prepared extracts was used. This led to the identification of 52 electro-extracted proteins. Of these, only 16 proteins were identified when proteins were extracted with PEF at 0.5 cm-1. They belong to core metabolism, stress response and cell movement. Unassigned proteins were also extracted. Their physiological implications and possible utilization in food as alimentary complements are discussed.
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Affiliation(s)
- Hélène Gateau
- Metabolism, Bioengineering of Molecules from Microalgae and Applications (MIMMA), Mer Molécules Santé, IUML - FR 3473 CNRS, Le Mans University, Le Mans, France
| | - Vincent Blanckaert
- Metabolism, Bioengineering of Molecules from Microalgae and Applications (MIMMA), Mer Molécules Santé, IUML - FR 3473 CNRS, IUT de Laval, Le Mans University, Le Mans, France
| | - Brigitte Veidl
- Metabolism, Bioengineering of Molecules from Microalgae and Applications (MIMMA), Mer Molécules Santé, IUML - FR 3473 CNRS, Le Mans University, Le Mans, France
| | - Odile Burlet-Schiltz
- Institut de Pharmacologie et de Biologie Structurale (IPBS), Université de Toulouse UPS, CNRS, Toulouse, France
| | - Carole Pichereaux
- Institut de Pharmacologie et de Biologie Structurale (IPBS), Université de Toulouse UPS, CNRS, Toulouse, France; Fédération de Recherche (FR3450), Agrobiosciences, Interactions et Biodiversité (FRAIB), CNRS, Toulouse, France
| | | | - Justine Marchand
- Metabolism, Bioengineering of Molecules from Microalgae and Applications (MIMMA), Mer Molécules Santé, IUML - FR 3473 CNRS, Le Mans University, Le Mans, France
| | - Benoît Schoefs
- Metabolism, Bioengineering of Molecules from Microalgae and Applications (MIMMA), Mer Molécules Santé, IUML - FR 3473 CNRS, Le Mans University, Le Mans, France.
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Zhang Y, Zhang Y, Yu J, Zhang H, Wang L, Wang S, Guo S, Miao Y, Chen S, Li Y, Dai S. NaCl-responsive ROS scavenging and energy supply in alkaligrass callus revealed from proteomic analysis. BMC Genomics 2019; 20:990. [PMID: 31847807 PMCID: PMC6918623 DOI: 10.1186/s12864-019-6325-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 11/22/2019] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Salinity has obvious effects on plant growth and crop productivity. The salinity-responsive mechanisms have been well-studied in differentiated organs (e.g., leaves, roots and stems), but not in unorganized cells such as callus. High-throughput quantitative proteomics approaches have been used to investigate callus development, somatic embryogenesis, organogenesis, and stress response in numbers of plant species. However, they have not been applied to callus from monocotyledonous halophyte alkaligrass (Puccinellia tenuifora). RESULTS The alkaligrass callus growth, viability and membrane integrity were perturbed by 50 mM and 150 mM NaCl treatments. Callus cells accumulated the proline, soluble sugar and glycine betaine for the maintenance of osmotic homeostasis. Importantly, the activities of ROS scavenging enzymes (e.g., SOD, APX, POD, GPX, MDHAR and GR) and antioxidants (e.g., ASA, DHA and GSH) were induced by salinity. The abundance patterns of 55 salt-responsive proteins indicate that salt signal transduction, cytoskeleton, ROS scavenging, energy supply, gene expression, protein synthesis and processing, as well as other basic metabolic processes were altered in callus to cope with the stress. CONCLUSIONS The undifferentiated callus exhibited unique salinity-responsive mechanisms for ROS scavenging and energy supply. Activation of the POD pathway and AsA-GSH cycle was universal in callus and differentiated organs, but salinity-induced SOD pathway and salinity-reduced CAT pathway in callus were different from those in leaves and roots. To cope with salinity, callus mainly relied on glycolysis, but not the TCA cycle, for energy supply.
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Affiliation(s)
- Yongxue Zhang
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, 150040, China
- Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Yue Zhang
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, 150040, China
| | - Juanjuan Yu
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, 150040, China
- College of Life Sciences, Henan Normal University, Xinxiang, 453007, China
| | - Heng Zhang
- Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Liyue Wang
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, 150040, China
| | - Sining Wang
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, 150040, China
| | - Siyi Guo
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, Kaifeng, 455000, China
| | - Yuchen Miao
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, Kaifeng, 455000, China
| | - Sixue Chen
- Department of Biology, Genetics Institute, Plant Molecular and Cellular Biology Program, Interdisciplinary Center for Biotechnology Research, University of Florida, Gainesville, FL, 32610, USA
| | - Ying Li
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration (Northeast Forestry University), Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin, 150040, China.
| | - Shaojun Dai
- Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China.
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11
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Bègue H, Mounier A, Rosnoblet C, Wendehenne D. Toward the understanding of the role of CDC48, a major component of the protein quality control, in plant immunity. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 279:34-44. [PMID: 30709491 DOI: 10.1016/j.plantsci.2018.10.029] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 10/29/2018] [Accepted: 10/31/2018] [Indexed: 06/09/2023]
Abstract
The evolutionally conserved chaperone-like protein CDC48 (cell division cycle 48) is a major component of ubiquitin-dependent protein degradation pathways in animal and yeast and, more generally, of the protein quality control machinery. In plants, CDC48 plays essential regulatory functions in development and the possibly that it contributes to protein degradation through the ubiquitin-proteasome system (UPS) and the endoplasmic reticulum-associated protein degradation (ERAD) system has been reported. In this review we described recent findings highlighting a role for CDC48 in plant immunity. First data indicated that CDC48 is S-nitrosylated in plant cells undergoing an immune response, regulates the turnover of immune receptors and mediates the degradation of viral proteins. Furthermore its overexpression was associated to an exacerbated hypersensitive-like cell death. We also designed and reported here the first CDC48 interactome. The corresponding data confirm the closed interaction of CDC48 with components of the UPS and shed light on its putative regulatory function of S-adenosyl-methionine synthesis and metabolism. More generally, these investigations further support the concept that plant cells facing pathogen attack finely regulate the protein quality control machinery.
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Affiliation(s)
- Hervé Bègue
- Agroécologie, AgroSup Dijon, CNRS, INRA, Univ. Bourgogne, Univ. Bourgogne Franche-Comté, F-21000, Dijon, France.
| | - Arnaud Mounier
- Agroécologie, AgroSup Dijon, CNRS, INRA, Univ. Bourgogne, Univ. Bourgogne Franche-Comté, F-21000, Dijon, France
| | - Claire Rosnoblet
- Agroécologie, AgroSup Dijon, CNRS, INRA, Univ. Bourgogne, Univ. Bourgogne Franche-Comté, F-21000, Dijon, France
| | - David Wendehenne
- Agroécologie, AgroSup Dijon, CNRS, INRA, Univ. Bourgogne, Univ. Bourgogne Franche-Comté, F-21000, Dijon, France.
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12
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Ribeiro DG, de Almeida RF, Fontes W, de Souza Castro M, de Sousa MV, Ricart CAO, da Cunha RNV, Lopes R, Scherwinski-Pereira JE, Mehta A. Stress and cell cycle regulation during somatic embryogenesis plays a key role in oil palm callus development. J Proteomics 2018; 192:137-146. [PMID: 30194057 DOI: 10.1016/j.jprot.2018.08.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 08/20/2018] [Accepted: 08/24/2018] [Indexed: 11/19/2022]
Abstract
Oil palm is an oleaginous plant of relevant economic importance since its fruits are rich in vegetable oil. These plants have a single apical meristem and the main method for vegetative propagation is somatic embryogenesis. The aim of this study was to identify differentially abundant proteins from oil palm genotypes contrasting in the capacity of embryogenic competence acquisition, using shotgun proteomics. Oil palm leaves were subjected to callus induction and the material was collected in biological triplicates at 14 and 90 days of callus induction. LC-MS/MS analysis was performed and revealed a total of 4695 proteins. Responsive and non-responsive genotypes were compared at 14 and 90 days of callus induction and 221 differentially abundant proteins were obtained. The data analysis revealed several proteins mainly related to energy metabolism, stress response and regulation of cell cycle, further analyzed by qRT-PCR, which seem important for embryogenic development. We suggest some of these proteins as key factors for the success of callus formation in oil palm including antioxidant and cell division proteins as well as proteins involved in the ubiquitination pathway. These proteins may also be potential biomarkers for the acquisition of embryogenic competence. SIGNIFICANCE: Antioxidant and cell division proteins as well as proteins involved in the ubiquitination pathway are key factors for the success of callus formation in oil palm. The proteins identified in this study may be potential biomarkers for embryogenic competence acquisition.
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Affiliation(s)
- Daiane Gonzaga Ribeiro
- Embrapa Recursos Genéticos e Biotecnologia, Brasilia, DF, Brazil; Programa de Pós-graduação em Botânica, University of Brasília, Brasilia, DF, Brazil
| | - Raphael Ferreira de Almeida
- Embrapa Recursos Genéticos e Biotecnologia, Brasilia, DF, Brazil; Programa de Pós-graduação em Botânica, University of Brasília, Brasilia, DF, Brazil
| | - Wagner Fontes
- Laboratory of Protein Chemistry and Biochemistry, Department of Cell Biology, University of Brasília, Brasilia, DF, Brazil
| | - Mariana de Souza Castro
- Laboratory of Protein Chemistry and Biochemistry, Department of Cell Biology, University of Brasília, Brasilia, DF, Brazil
| | - Marcelo Valle de Sousa
- Laboratory of Protein Chemistry and Biochemistry, Department of Cell Biology, University of Brasília, Brasilia, DF, Brazil
| | - Carlos André Ornelas Ricart
- Laboratory of Protein Chemistry and Biochemistry, Department of Cell Biology, University of Brasília, Brasilia, DF, Brazil
| | | | | | - Jonny Everson Scherwinski-Pereira
- Embrapa Recursos Genéticos e Biotecnologia, Brasilia, DF, Brazil; Programa de Pós-graduação em Botânica, University of Brasília, Brasilia, DF, Brazil.
| | - Angela Mehta
- Embrapa Recursos Genéticos e Biotecnologia, Brasilia, DF, Brazil.
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13
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Pérez-Pascual D, Jiménez-Guillen D, Villanueva-Alonzo H, Souza-Perera R, Godoy-Hernández G, Zúñiga-Aguilar JJ. Ectopic expression of the Coffea canephora SERK1 homolog-induced differential transcription of genes involved in auxin metabolism and in the developmental control of embryogenesis. PHYSIOLOGIA PLANTARUM 2018; 163:530-551. [PMID: 29607503 DOI: 10.1111/ppl.12709] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 02/15/2018] [Accepted: 02/17/2018] [Indexed: 05/28/2023]
Abstract
Somatic embryogenesis receptor-like kinase 1 (SERK1) is a membrane receptor that might serve as common co-regulator of plant cell differentiation processes by forming heterodimers with specific receptor-like kinases. The Coffea canephora SERK1 homolog (CcSERK1) was cloned in this work, and its early function in the transcription of embryogenesis master genes and of genes encoding proteins involved in auxin metabolism was investigated by externally manipulating its expression in embryogenic leaf explants, before the appearance of embryogenic structures. Overexpression of CcSERK1 early during embryogenesis caused an increase in the number of somatic embryos when the 55-day process was completed. Suppression of CcSERK1 expression by RNA interference almost abolished somatic embryogenesis. Real time-PCR experiments revealed that the transcription of the CcAGL15, CcWUS, CcBBM, CcPKL, CcYUC1, CcPIN1 and CcPIN4 homologs was modified in direct proportion to the expression of CcSERK1 and that only CcLEC1 was inversely affected by the expression levels of CcSERK1. The expression of the CcYUC4 homolog was induced to more than 80-fold under CcSERK1 overexpression conditions, but it was also induced when CcSERK1 expression was silenced. The level of CcTIR1 was not affected by CcSERK1 overexpression but was almost abolished during CcSERK1 silencing. These results suggest that CcSERK1 co-regulates the induction of somatic embryogenesis in Coffea canephora by early activation of YUC-dependent auxin biosynthesis, auxin transport mediated by PIN1 and PIN4, and probably auxin perception by the TIR1 receptor, leading to the induction of early-stage homeotic genes (CcAGL15, CcWUS, CcPKL and CcBBM) and repression of late-stage homeotic genes (CcLec1).
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Affiliation(s)
- Daniel Pérez-Pascual
- Centro de Investigación Científica de Yucatán, Unidad de Bioquímica y Biología Molecular de Plantas, Mérida, Yucatán, Mexico
| | - Doribet Jiménez-Guillen
- Centro de Investigación Científica de Yucatán, Unidad de Bioquímica y Biología Molecular de Plantas, Mérida, Yucatán, Mexico
| | - Hernán Villanueva-Alonzo
- Current address: Centro de Investigaciones Regionales, Dr. Hideyo Noguchi, Mérida, Yucatán, Mexico
| | - Ramón Souza-Perera
- Centro de Investigación Científica de Yucatán, Unidad de Bioquímica y Biología Molecular de Plantas, Mérida, Yucatán, Mexico
| | - Gregorio Godoy-Hernández
- Centro de Investigación Científica de Yucatán, Unidad de Bioquímica y Biología Molecular de Plantas, Mérida, Yucatán, Mexico
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14
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Rosnoblet C, Bègue H, Blanchard C, Pichereaux C, Besson-Bard A, Aimé S, Wendehenne D. Functional characterization of the chaperon-like protein Cdc48 in cryptogein-induced immune response in tobacco. PLANT, CELL & ENVIRONMENT 2017; 40:491-508. [PMID: 26662183 DOI: 10.1111/pce.12686] [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: 09/02/2015] [Revised: 11/20/2015] [Accepted: 11/27/2015] [Indexed: 05/06/2023]
Abstract
Cdc48, a molecular chaperone conserved in different kingdoms, is a member of the AAA+ family contributing to numerous processes in mammals including proteins quality control and degradation, vesicular trafficking, autophagy and immunity. The functions of Cdc48 plant orthologues are less understood. We previously reported that Cdc48 is regulated by S-nitrosylation in tobacco cells undergoing an immune response triggered by cryptogein, an elicitin produced by the oomycete Phytophthora cryptogea. Here, we inv estigated the function of NtCdc48 in cryptogein signalling and induced hypersensitive-like cell death. NtCdc48 was found to accumulate in elicited cells at both the protein and transcript levels. Interestingly, only a small proportion of the overall NtCdc48 population appeared to be S-nitrosylated. Using gel filtration in native conditions, we confirmed that NtCdc48 was present in its hexameric active form. An immunoprecipitation-based strategy following my mass spectrometry analysis led to the identification of about a hundred NtCdc48 partners and underlined its contribution in cellular processes including targeting of ubiquitylated proteins for proteasome-dependent degradation, subcellular trafficking and redox regulation. Finally, the analysis of cryptogein-induced events in NtCdc48-overexpressing cells highlighted a correlation between NtCdc48 expression and hypersensitive cell death. Altogether, this study identified NtCdc48 as a component of cryptogein signalling and plant immunity.
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Affiliation(s)
- Claire Rosnoblet
- Pôle Mécanisme et Gestion des Interactions Plantes-Microorganismes - ERL CNRS 6300, Université de Bourgogne Franche-Comté, UMR 1347 Agroécologie, 17 rue Sully, BP 86510, 21065, Dijon cédex, France
| | - Hervé Bègue
- Pôle Mécanisme et Gestion des Interactions Plantes-Microorganismes - ERL CNRS 6300, Université de Bourgogne Franche-Comté, UMR 1347 Agroécologie, 17 rue Sully, BP 86510, 21065, Dijon cédex, France
| | - Cécile Blanchard
- Pôle Mécanisme et Gestion des Interactions Plantes-Microorganismes - ERL CNRS 6300, Université de Bourgogne Franche-Comté, UMR 1347 Agroécologie, 17 rue Sully, BP 86510, 21065, Dijon cédex, France
| | - Carole Pichereaux
- Fédération de Recherche 3450, Agrobiosciences, Interactions et Biodiversité, CNRS, 31326, Castanet-Tolosan, France
- Institut de Pharmacologie et de Biologie Structurale - CNRS, Université de Toulouse, 205 route de Narbonne,, 31077, Toulouse, France
| | - Angélique Besson-Bard
- Pôle Mécanisme et Gestion des Interactions Plantes-Microorganismes - ERL CNRS 6300, Université de Bourgogne Franche-Comté, UMR 1347 Agroécologie, 17 rue Sully, BP 86510, 21065, Dijon cédex, France
| | - Sébastien Aimé
- INRA, UMR 1347 Agroécologie, Pôle Mécanisme et Gestion des Interactions Plantes-Microorganismes - ERL CNRS 6300, 17 rue Sully, BP 86510, 21065, Dijon cédex, France
| | - David Wendehenne
- Pôle Mécanisme et Gestion des Interactions Plantes-Microorganismes - ERL CNRS 6300, Université de Bourgogne Franche-Comté, UMR 1347 Agroécologie, 17 rue Sully, BP 86510, 21065, Dijon cédex, France
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15
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Bègue H, Jeandroz S, Blanchard C, Wendehenne D, Rosnoblet C. Structure and functions of the chaperone-like p97/CDC48 in plants. Biochim Biophys Acta Gen Subj 2016; 1861:3053-3060. [PMID: 27717811 DOI: 10.1016/j.bbagen.2016.10.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 09/29/2016] [Accepted: 10/01/2016] [Indexed: 12/15/2022]
Abstract
BACKGROUND The chaperone-like p97 is a member of the AAA+ ATPase enzyme family that contributes to numerous cellular activities. P97 has been broadly studied in mammals (VCP/p97) and yeasts (CDC48: Cell Division Cycle 48/p97) and numerous investigations highlighted that this protein is post-translationally regulated, is structured in homohexamer and interacts with partners and cofactors that direct it to distinct cellular signalization pathway including protein quality control and degradation, cell cycle regulation, genome stability, vesicular trafficking, autophagy and immunity. SCOPE OF REVIEW p97 is also conserved in plants (CDC48) but its functions are less understood. In the present review we intended to present the state of the art of the structure, regulation and functions of CDC48 in plants. MAJOR CONCLUSIONS Evidence accumulated underline that CDC48 plays a crucial role in development, cell cycle regulation and protein turnover in plants. Furthermore, its involvement in plant immunity has recently emerged and first interacting partners have been identified, shedding light on its putative cellular activities. GENERAL SIGNIFICANCE Identification of emerging functions of CDC48 in plants opens new roads of research in immunity and provides new insights into the mechanisms of protein quality control.
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Affiliation(s)
- Hervé Bègue
- Agroécologie, AgroSup Dijon, CNRS, INRA, Univ. Bourgogne Franche-Comté, F-21000 Dijon, France
| | - Sylvain Jeandroz
- Agroécologie, AgroSup Dijon, CNRS, INRA, Univ. Bourgogne Franche-Comté, F-21000 Dijon, France
| | - Cécile Blanchard
- Agroécologie, AgroSup Dijon, CNRS, INRA, Univ. Bourgogne Franche-Comté, F-21000 Dijon, France
| | - David Wendehenne
- Agroécologie, AgroSup Dijon, CNRS, INRA, Univ. Bourgogne Franche-Comté, F-21000 Dijon, France
| | - Claire Rosnoblet
- Agroécologie, AgroSup Dijon, CNRS, INRA, Univ. Bourgogne Franche-Comté, F-21000 Dijon, France.
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16
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dos Santos ALW, Elbl P, Navarro BV, de Oliveira LF, Salvato F, Balbuena TS, Floh EIS. Quantitative proteomic analysis of Araucaria angustifolia (Bertol.) Kuntze cell lines with contrasting embryogenic potential. J Proteomics 2016; 130:180-9. [DOI: 10.1016/j.jprot.2015.09.027] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Revised: 08/26/2015] [Accepted: 09/22/2015] [Indexed: 12/21/2022]
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17
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Pallucca R, Visconti S, Camoni L, Cesareni G, Melino S, Panni S, Torreri P, Aducci P. Specificity of ε and non-ε isoforms of arabidopsis 14-3-3 proteins towards the H+-ATPase and other targets. PLoS One 2014; 9:e90764. [PMID: 24603559 PMCID: PMC3946203 DOI: 10.1371/journal.pone.0090764] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Accepted: 02/04/2014] [Indexed: 11/17/2022] Open
Abstract
14-3-3 proteins are a family of ubiquitous dimeric proteins that modulate many cellular functions in all eukaryotes by interacting with target proteins. 14-3-3s exist as a number of isoforms that in Arabidopsis identifies two major groups named ε and non-ε. Although isoform specificity has been demonstrated in many systems, the molecular basis for the selection of specific sequence contexts has not been fully clarified. In this study we have investigated isoform specificity by measuring the ability of different Arabidopsis 14-3-3 isoforms to activate the H+-ATPase. We observed that GF14 isoforms of the non-ε group were more effective than ε group isoforms in the interaction with the H+-ATPase and in the stimulation of its activity. Kinetic and thermodynamic parameters of the binding of GF14ε and GF14ω isoforms, representative of ε and non-ε groups respectively, with the H+-ATPase, have been determined by Surface Plasmon Resonance analysis demonstrating that the higher affinity of GF14ω is mainly due to slower dissociation. The role of the C-terminal region and of a Gly residue located in the loop 8 and conserved in all non-ε isoforms has also been studied by deletion and site-specific mutagenesis. The C-terminal domains, despite their high divergence, play an auto-inhibitory role in both isoforms and they, in addition to a specific residue located in the loop 8, contribute to isoform specificity. To investigate the generality of these findings, we have used the SPOT-synthesis technology to array a number of phosphopeptides matching known or predicted 14-3-3 binding sites present in a number of clients. The results of this approach confirmed isoform specificity in the recognition of several target peptides, suggesting that the isoform specificity may have an impact on the modulation of a variety of additional protein activities, as suggested by probing of a phosphopeptide array with members of the two 14-3-3 groups.
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Affiliation(s)
- Roberta Pallucca
- Department of Biology, University of Rome "Tor Vergata", Rome, Italy
| | - Sabina Visconti
- Department of Biology, University of Rome "Tor Vergata", Rome, Italy
| | - Lorenzo Camoni
- Department of Biology, University of Rome "Tor Vergata", Rome, Italy
| | - Giovanni Cesareni
- Department of Biology, University of Rome "Tor Vergata", Rome, Italy; IRCSS, Research Institute "Fondazione Santa Lucia", Rome, Italy
| | - Sonia Melino
- Department of Sciences and Chemical Technologies, University of Rome "Tor Vergata", Rome, Italy
| | - Simona Panni
- Department DiBEST, University of Calabria, Rende, Italy
| | - Paola Torreri
- Department of Cell Biology and Neuroscience, Istituto Superiore di Sanità, Rome, Italy
| | - Patrizia Aducci
- Department of Biology, University of Rome "Tor Vergata", Rome, Italy
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18
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Lv DW, Subburaj S, Cao M, Yan X, Li X, Appels R, Sun DF, Ma W, Yan YM. Proteome and phosphoproteome characterization reveals new response and defense mechanisms of Brachypodium distachyon leaves under salt stress. Mol Cell Proteomics 2014; 13:632-52. [PMID: 24335353 PMCID: PMC3916659 DOI: 10.1074/mcp.m113.030171] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Revised: 11/22/2013] [Indexed: 11/27/2022] Open
Abstract
Salinity is a major abiotic stress affecting plant growth and development. Understanding the molecular mechanisms of salt response and defense in plants will help in efforts to improve the salt tolerance of crops. Brachypodium distachyon is a new model plant for wheat, barley, and several potential biofuel grasses. In the current study, proteome and phosphoproteome changes induced by salt stress were the focus. The Bd21 leaves were initially treated with salt in concentrations ranging from 80 to 320 mm and then underwent a recovery process prior to proteome analysis. A total of 80 differentially expressed protein spots corresponding to 60 unique proteins were identified. The sample treated with a median salt level of 240 mm and the control were selected for phosphopeptide purification using TiO2 microcolumns and LC-MS/MS for phosphoproteome analysis to identify the phosphorylation sites and phosphoproteins. A total of 1509 phosphoproteins and 2839 phosphorylation sites were identified. Among them, 468 phosphoproteins containing 496 phosphorylation sites demonstrated significant changes at the phosphorylation level. Nine phosphorylation motifs were extracted from the 496 phosphorylation sites. Of the 60 unique differentially expressed proteins, 14 were also identified as phosphoproteins. Many proteins and phosphoproteins, as well as potential signal pathways associated with salt response and defense, were found, including three 14-3-3s (GF14A, GF14B, and 14-3-3A) for signal transduction and several ABA signal-associated proteins such as ABF2, TRAB1, and SAPK8. Finally, a schematic salt response and defense mechanism in B. distachyon was proposed.
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Affiliation(s)
- Dong-Wen Lv
- From the ‡College of Life Science, Capital Normal University, 100048 Beijing, China
| | - Saminathan Subburaj
- From the ‡College of Life Science, Capital Normal University, 100048 Beijing, China
| | - Min Cao
- From the ‡College of Life Science, Capital Normal University, 100048 Beijing, China
| | - Xing Yan
- From the ‡College of Life Science, Capital Normal University, 100048 Beijing, China
| | - Xiaohui Li
- From the ‡College of Life Science, Capital Normal University, 100048 Beijing, China
| | - Rudi Appels
- §State Agriculture Biotechnology Centre, Murdoch University and Western Australian Department of Agriculture and Food, Perth, WA 6150, Australia
| | - Dong-Fa Sun
- ¶College of Plant Science and Technology, Huazhong Agricultural University, 430070 Wuhan, China
| | - Wujun Ma
- §State Agriculture Biotechnology Centre, Murdoch University and Western Australian Department of Agriculture and Food, Perth, WA 6150, Australia
| | - Yue-Ming Yan
- From the ‡College of Life Science, Capital Normal University, 100048 Beijing, China
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19
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Ferro E, Trabalzini L. The yeast two-hybrid and related methods as powerful tools to study plant cell signalling. PLANT MOLECULAR BIOLOGY 2013; 83:287-301. [PMID: 23794143 DOI: 10.1007/s11103-013-0094-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Accepted: 06/15/2013] [Indexed: 05/25/2023]
Abstract
One basic property of proteins is their ability to specifically target and form non-covalent complexes with other proteins. Such protein-protein interactions play key roles in all biological processes, extending from the formation of cellular macromolecular structures and enzymatic complexes to the regulation of signal transduction pathways. Identifying and characterizing protein interactions and entire interaction networks (interactomes) is therefore prerequisite to understand these processes on a molecular and biophysical level. Since its original description in 1989, the yeast two-hybrid system has been extensively used to identify protein-protein interactions from many different organisms, thus providing a convenient mean to both screen for proteins that interact with a protein of interest and to characterize the known interaction between two proteins. In these years the technique has improved to overcome the limitations of the original assay, and many efforts have been made to scale up the technique and to adapt it to large scale studies. In addition, variations have been introduced to enlarge the range of proteins and interactors that can be assayed by hybrid-based approaches. Several groups studying molecular mechanisms that underlie plant cell signal transduction pathways have successfully used the yeast two-hybrid system or related methods. In this review we provide a brief description of the technology, attempt to point out some of the pitfalls and benefits of the different systems that can be employed, and mention some of the areas, within the plant cell signalling field, where hybrid-based interaction assays have been particularly informative.
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Affiliation(s)
- Elisa Ferro
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via Fiorentina, 1, 53100, Siena, Italy,
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20
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de Boer AH, van Kleeff PJM, Gao J. Plant 14-3-3 proteins as spiders in a web of phosphorylation. PROTOPLASMA 2013; 250:425-40. [PMID: 22926776 DOI: 10.1007/s00709-012-0437-z] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Accepted: 07/18/2012] [Indexed: 05/17/2023]
Abstract
Protein phosphorylation is essential for many aspects of plant growth and development. To fully modulate the activity of specific proteins after phosphorylation, interaction with members of the 14-3-3 family is necessary. 14-3-3 Proteins are important for many processes because they "assist" a wide range of target proteins with divergent functions. In this review, we will describe how plant 14-3-3 proteins are as spiders in a web of phosphorylation: they act as sensors for phospho-motifs, they themselves are phosphorylated with unknown consequences and they have kinases as target, where some of these phosphorylate 14-3-3 binding motifs in other proteins. Two specific classes of 14-3-3 targets, protein kinases and transcription factors of the bZIP and basic helix-loop-helix-like families, with important and diverse functions in the plant as a whole will be discussed. An important question to be addressed in the near future is how the interaction with 14-3-3 proteins has diverged, both structurally and functionally, between different members of the same protein family, like the kinases and transcription factors.
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Affiliation(s)
- Albertus H de Boer
- Faculty of Earth & Life Sciences, Department of Structural Biology, Vrije Universiteit, De Boelelaan 1085, 1081 HV, Amsterdam, Netherlands.
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21
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Aan den Toorn M, Huijbers MME, de Vries SC, van Mierlo CPM. The Arabidopsis thaliana SERK1 kinase domain spontaneously refolds to an active state in vitro. PLoS One 2012; 7:e50907. [PMID: 23236403 PMCID: PMC3517577 DOI: 10.1371/journal.pone.0050907] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2012] [Accepted: 10/26/2012] [Indexed: 11/19/2022] Open
Abstract
Auto-phosphorylating kinase activity of plant leucine-rich-repeat receptor-like kinases (LRR-RLK's) needs to be under tight negative control to avoid unscheduled activation. One way to achieve this would be to keep these kinase domains as intrinsically disordered protein (IDP) during synthesis and transport to its final location. Subsequent folding, which may depend on chaperone activity or presence of interaction partners, is then required for full activation of the kinase domain. Bacterially produced SERK1 kinase domain was previously shown to be an active Ser/Thr kinase. SERK1 is predicted to contain a disordered region in kinase domains X and XI. Here, we show that loss of structure of the SERK1 kinase domain during unfolding is intimately linked to loss of activity. Phosphorylation of the SERK1 kinase domain neither changes its structure nor its stability. Unfolded SERK1 kinase has no autophosphorylation activity and upon removal of denaturant about one half of the protein population spontaneously refolds to an active protein in vitro. Thus, neither chaperones nor interaction partners are required during folding of this protein to its catalytically active state.
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22
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23
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Popescu SC. A model for the biosynthesis and transport of plasma membrane-associated signaling receptors to the cell surface. FRONTIERS IN PLANT SCIENCE 2012; 3:71. [PMID: 22639660 PMCID: PMC3355576 DOI: 10.3389/fpls.2012.00071] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Accepted: 03/26/2012] [Indexed: 05/03/2023]
Abstract
Intracellular protein transport is emerging as critical in determining the outcome of receptor-activated signal transduction pathways. In plants, relatively little is known about the nature of the molecular components and mechanisms involved in coordinating receptor synthesis and transport to the cell surface. Recent advances in this field indicate that signaling pathways and intracellular transport machinery converge and coordinate to render receptors competent for signaling at their plasma membrane (PM) activity sites. The biogenesis and transport to the cell surface of signaling receptors appears to require both general trafficking and receptor-specific factors. Several molecular determinants, residing or associated with compartments of the secretory pathway and known to influence aspects in receptor biogenesis, are discussed and integrated into a predictive cooperative model for the functional expression of signaling receptors at the PM.
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Affiliation(s)
- Sorina C. Popescu
- Boyce Thompson Institute for Plant ResearchIthaca, NY, USA
- *Correspondence: Sorina C. Popescu, Boyce Thompson Institute for Plant Research, Tower Road, Ithaca, NY 14853, USA. e-mail:
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Fluorescence Correlation Spectroscopy and Fluorescence Recovery After Photobleaching to study receptor kinase mobility in planta. Methods Mol Biol 2011; 779:225-42. [PMID: 21837570 DOI: 10.1007/978-1-61779-264-9_13] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
Plasma-membrane-localized receptor kinases are essential for cell-cell communication and as sensors for the extracellular environment. Receptor function is dependent on their distribution in the membrane and interaction with other proteins that are either membrane-localized, present in the cytoplasm, or in the extracellular space. The organized distribution and mobility of receptor kinases is, therefore, thought to regulate the efficiency of downstream signaling. This chapter describes two methods to study receptor mobility in the plasma membrane. Fluorescence Correlation Spectroscopy (FCS) and Fluorescence Recovery After Photobleaching (FRAP). Especially, the combination of FRAP and FCS provides a better insight into plasma membrane receptor mobility.
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25
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Transcriptome Analysis of Differentially Expressed Genes During Embryo Sac Development in Apomeiotic Non-Parthenogenetic Interspecific Hybrid of Pennisetum glaucum. Mol Biotechnol 2011; 51:262-71. [DOI: 10.1007/s12033-011-9464-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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26
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Swatek KN, Graham K, Agrawal GK, Thelen JJ. The 14-3-3 Isoforms Chi and Epsilon Differentially Bind Client Proteins from Developing Arabidopsis Seed. J Proteome Res 2011; 10:4076-87. [DOI: 10.1021/pr200263m] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kirby N. Swatek
- Interdisciplinary Plant Group and Department of Biochemistry, University of Missouri, Christopher S. Bond Life Sciences Center, Columbia, Missouri 65211, United States
| | - Katherine Graham
- Interdisciplinary Plant Group and Department of Biochemistry, University of Missouri, Christopher S. Bond Life Sciences Center, Columbia, Missouri 65211, United States
| | - Ganesh K. Agrawal
- Research Laboratory for Biotechnology and Biochemistry (RLABB), GPO 13265, Kathmandu, Nepal
| | - Jay J. Thelen
- Interdisciplinary Plant Group and Department of Biochemistry, University of Missouri, Christopher S. Bond Life Sciences Center, Columbia, Missouri 65211, United States
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Lewis MW, Leslie ME, Fulcher EH, Darnielle L, Healy P, Youn JY, Liljegren SJ. The SERK1 receptor-like kinase regulates organ separation in Arabidopsis flowers. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2010; 62:817-28. [PMID: 20230490 PMCID: PMC2884084 DOI: 10.1111/j.1365-313x.2010.04194.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Through a sensitized screen for novel components of pathways regulating organ separation in Arabidopsis flowers, we have found that the leucine-rich repeat receptor-like kinase SOMATIC EMBRYOGENESIS RECEPTOR-LIKE KINASE1 (SERK1) acts as a negative regulator of abscission. Mutations in SERK1 dominantly rescue abscission in flowers without functional NEVERSHED (NEV), an ADP-ribosylation factor GTPase-activating protein required for floral organ shedding. We previously reported that the organization of the Golgi apparatus and location of the trans-Golgi network (TGN) are altered in nev mutant flowers. Disruption of SERK1 restores Golgi structure and the close association of the TGN in nev flowers, suggesting that defects in these organelles may be responsible for the block in abscission. We have also found that the abscission zones of nev serk1 flowers are enlarged compared to wild-type. A similar phenotype was previously observed in plants constitutively expressing a putative ligand required for organ separation, INFLORESCENCE DEFICIENT IN ABSCISSION (IDA), suggesting that signalling through IDA and its proposed receptors, HAESA and HAESA-LIKE2, may be deregulated in nev serk1 abscission zone cells. Our studies indicate that in addition to its previously characterized roles in stamen development and brassinosteroid perception, SERK1 plays a unique role in modulating the loss of cell adhesion that occurs during organ abscission.
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Affiliation(s)
- Michael W. Lewis
- Department of Biology, University of North Carolina, Chapel Hill, NC 27599-3280, USA
| | - Michelle E. Leslie
- Curriculum in Genetics and Molecular Biology, University of North Carolina, Chapel Hill, NC 27599-3280, USA
| | - Emilee H. Fulcher
- Department of Biology, University of North Carolina, Chapel Hill, NC 27599-3280, USA
| | - Lalitree Darnielle
- Department of Biology, University of North Carolina, Chapel Hill, NC 27599-3280, USA
| | - Patrick Healy
- Department of Biology, University of North Carolina, Chapel Hill, NC 27599-3280, USA
| | - Ji-Young Youn
- Department of Biology, University of North Carolina, Chapel Hill, NC 27599-3280, USA
| | - Sarah J. Liljegren
- Department of Biology, University of North Carolina, Chapel Hill, NC 27599-3280, USA
- Curriculum in Genetics and Molecular Biology, University of North Carolina, Chapel Hill, NC 27599-3280, USA
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28
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Yang X, Wang W, Coleman M, Orgil U, Feng J, Ma X, Ferl R, Turner JG, Xiao S. Arabidopsis 14-3-3 lambda is a positive regulator of RPW8-mediated disease resistance. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2009; 60:539-50. [PMID: 19624472 DOI: 10.1111/j.1365-313x.2009.03978.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The RPW8 locus from Arabidopsis thaliana Ms-0 includes two functional paralogous genes (RPW8.1 and RPW8.2) and confers broad-spectrum resistance via the salicylic acid-dependent signaling pathway to the biotrophic fungal pathogens Golovinomyces spp. that cause powdery mildew diseases on multiple plant species. To identify proteins involved in regulation of the RPW8 protein function, a yeast two-hybrid screen was performed using RPW8.2 as bait. The 14-3-3 isoform lambda (designated GF14lambda) was identified as a potential RPW8.2 interactor. The RPW8.2-GF14lambda interaction was specific and engaged the C-terminal domain of RPW8.2, which was confirmed by pulldown assays. The physiological impact of the interaction was revealed by knocking down GF14lambda by T-DNA insertion, which compromised basal and RPW8-mediated resistance to powdery mildew. In addition, over-expression of GF14lambda resulted in hypersensitive response-like cell death and enhanced resistance to powdery mildew via the salicylic acid-dependent signaling pathway. The results from this study suggest that GF14lambda may positively regulate the RPW8.2 resistance function and play a role in enhancing basal resistance in Arabidopsis.
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Affiliation(s)
- Xiaohua Yang
- Center for Biosystems Research, University of Maryland Biotechnology Institute, Rockville, MD 20850, USA
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29
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Chang IF, Curran A, Woolsey R, Quilici D, Cushman JC, Mittler R, Harmon A, Harper JF. Proteomic profiling of tandem affinity purified 14-3-3 protein complexes in Arabidopsis thaliana. Proteomics 2009; 9:2967-85. [PMID: 19452453 DOI: 10.1002/pmic.200800445] [Citation(s) in RCA: 151] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In eukaryotes, 14-3-3 dimers regulate hundreds of functionally diverse proteins (clients), typically in phosphorylation-dependent interactions. To uncover new clients, 14-3-3 omega (At1g78300) from Arabidopsis was engineered with a "tandem affinity purification" tag and expressed in transgenic plants. Purified complexes were analyzed by tandem MS. Results indicate that 14-3-3 omega can dimerize with at least 10 of the 12 14-3-3 isoforms expressed in Arabidopsis. The identification here of 121 putative clients provides support for in vivo 14-3-3 interactions with a diverse array of proteins, including those involved in: (i) Ion transport, such as a K(+) channel (GORK), a Cl(-) channel (CLCg), Ca(2+) channels belonging to the glutamate receptor family (1.2, 2.1, 2.9, 3.4, 3.7); (ii) hormone signaling, such as ACC synthase (isoforms ACS-6, -7 and -8 involved in ethylene synthesis) and the brassinolide receptors BRI1 and BAK1; (iii) transcription, such as 7 WRKY family transcription factors; (iv) metabolism, such as phosphoenol pyruvate carboxylase; and (v) lipid signaling, such as phospholipase D (beta and gamma). More than 80% (101) of these putative clients represent previously unidentified 14-3-3 interactors. These results raise the number of putative 14-3-3 clients identified in plants to over 300.
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Affiliation(s)
- Ing-Feng Chang
- Department of Biochemistry and Molecular Biology, University of Nevada, Reno, NV, USA
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30
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Bae H, Choi SM, Yang SW, Pai HS, Kim WT. Suppression of the ER-localized AAA ATPase NgCDC48 inhibits tobacco growth and development. Mol Cells 2009; 28:57-65. [PMID: 19711043 DOI: 10.1007/s10059-009-0101-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2009] [Revised: 05/29/2009] [Accepted: 06/03/2009] [Indexed: 10/20/2022] Open
Abstract
CDC48 is a member of the AAA ATPase superfamily. Yeast CDC48 and its mammalian homolog p97 are implicated in diverse cellular processes, including mitosis, membrane fusion, and ubiquitin-dependent protein degradation. However, the cellular functions of plant CDC48 proteins are largely unknown. In the present study, we performed virus-induced gene silencing (VIGS) screening and found that silencing of a gene encoding a tobacco CDC48 homolog, NgCDC48, resulted in severe abnormalities in leaf and shoot development in tobacco. Furthermore, transgenic tobacco plants (35S:anti-NgCDC48), in which the NgCDC48 gene was suppressed using the antisense RNA method, exhibited severely aberrant development of both vegetative and reproductive organs, resulting in arrested shoot and leaf growth and sterile flowers. Approximately 57-83% of 35S:anti-NgCDC48 plants failed to develop mature organs and died at early stage of development. Scanning electron microscopy showed that both adaxial and abaxial epidermal pavement cells in antisense transgenic leaves were significantly smaller and more numerous than those in wild type leaves. These results indicate that NgCDC48 is critically involved in cell growth and development of tobacco plants. An in vivo targeting experiment revealed that NgCDC48 resides in the endoplasmic reticulum (ER) in tobacco protoplasts. We consider the tantalizing possibility that CDC48-mediated degradation of an as-yet unidentified protein(s) in the ER might be a critical step for cell growth and expansion in tobacco leaves.
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Affiliation(s)
- Hansol Bae
- Department of Biology, College of Life Science and Biotechnology, Yonsei University, Seoul 120-749, Korea
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31
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Paul AL, Liu L, McClung S, Laughner B, Chen S, Ferl RJ. Comparative Interactomics: Analysis of Arabidopsis 14-3-3 Complexes Reveals Highly Conserved 14-3-3 Interactions between Humans and Plants. J Proteome Res 2009; 8:1913-24. [DOI: 10.1021/pr8008644] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Anna-Lisa Paul
- Program in Plant Molecular and Cellular Biology, Department of Horticultural Sciences, University of Florida, Gainesville, Florida 32611-0690, Department of Botany, University of Florida, Gainesville, Florida 32611, and Interdisciplinary Center for Biotechnology Research, University of Florida, Gainesville, Florida 32610-3622
| | - Li Liu
- Program in Plant Molecular and Cellular Biology, Department of Horticultural Sciences, University of Florida, Gainesville, Florida 32611-0690, Department of Botany, University of Florida, Gainesville, Florida 32611, and Interdisciplinary Center for Biotechnology Research, University of Florida, Gainesville, Florida 32610-3622
| | - Scott McClung
- Program in Plant Molecular and Cellular Biology, Department of Horticultural Sciences, University of Florida, Gainesville, Florida 32611-0690, Department of Botany, University of Florida, Gainesville, Florida 32611, and Interdisciplinary Center for Biotechnology Research, University of Florida, Gainesville, Florida 32610-3622
| | - Beth Laughner
- Program in Plant Molecular and Cellular Biology, Department of Horticultural Sciences, University of Florida, Gainesville, Florida 32611-0690, Department of Botany, University of Florida, Gainesville, Florida 32611, and Interdisciplinary Center for Biotechnology Research, University of Florida, Gainesville, Florida 32610-3622
| | - Sixue Chen
- Program in Plant Molecular and Cellular Biology, Department of Horticultural Sciences, University of Florida, Gainesville, Florida 32611-0690, Department of Botany, University of Florida, Gainesville, Florida 32611, and Interdisciplinary Center for Biotechnology Research, University of Florida, Gainesville, Florida 32610-3622
| | - Robert J. Ferl
- Program in Plant Molecular and Cellular Biology, Department of Horticultural Sciences, University of Florida, Gainesville, Florida 32611-0690, Department of Botany, University of Florida, Gainesville, Florida 32611, and Interdisciplinary Center for Biotechnology Research, University of Florida, Gainesville, Florida 32610-3622
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32
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Ceserani T, Trofka A, Gandotra N, Nelson T. VH1/BRL2 receptor-like kinase interacts with vascular-specific adaptor proteins VIT and VIK to influence leaf venation. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2009; 57:1000-14. [PMID: 19000166 PMCID: PMC2793540 DOI: 10.1111/j.1365-313x.2008.03742.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
VH1/BRL2 is a receptor-like kinase of the BRI1 family with a role in vascular development. In developing Arabidopsis leaves it is expressed first in ground cells and then becomes restricted to provascular and procambial cells as venation forms. We isolated proteins interacting with the activated (phosphorylated) cytoplasmic domain of VH1/BRL2, and found that most belong to three processes: proteasome activity, vesicle traffic and intracellular signal transduction. Two adaptor proteins are included that we named VIT [VH1-interacting tetratricopeptide repeat (TPR)-containing protein] and VIK (VH1-interacting kinase), which are co-expressed in the same cells as VH1/BRL2 at two distinct time points in vein differentiation. Mutation of either adaptor or of VH1 results in vein pattern defects and in alterations in response to auxin and brassinosteroids. We propose that these two adaptors facilitate the diversification and amplification of a ligand signal perceived by VH1/BRL2 in multiple downstream pathways affecting venation.
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Affiliation(s)
- Teresa Ceserani
- Department of Molecular, Cellular & Developmental Biology Yale University P.O. Box 208104 New Haven, CT 06520-8104
| | - Anna Trofka
- Department of Molecular, Cellular & Developmental Biology Yale University P.O. Box 208104 New Haven, CT 06520-8104
| | - Neeru Gandotra
- Department of Molecular, Cellular & Developmental Biology Yale University P.O. Box 208104 New Haven, CT 06520-8104
| | - Timothy Nelson
- Department of Molecular, Cellular & Developmental Biology Yale University P.O. Box 208104 New Haven, CT 06520-8104
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33
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Chevalier D, Morris ER, Walker JC. 14-3-3 and FHA domains mediate phosphoprotein interactions. ANNUAL REVIEW OF PLANT BIOLOGY 2009; 60:67-91. [PMID: 19575580 DOI: 10.1146/annurev.arplant.59.032607.092844] [Citation(s) in RCA: 110] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Many aspects of plant growth and development require specific protein interactions to carry out biochemical and cellular functions. Several proteins mediate these interactions, two of which specifically recognize phosphoproteins: 14-3-3 proteins and proteins with FHA domains. These are the only phosphobinding domains identified in plants. Both domains are present in animals and plants, and are used by plant proteins to regulate metabolic, developmental, and signaling pathways. 14-3-3s regulate sugar metabolism, proton gradients, and control transcription factor localization. FHA domains are modular domains often found in multidomain proteins that are involved in signal transduction and plant development.
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Affiliation(s)
- David Chevalier
- Division of Biological Sciences and Bond Life Sciences Center, University of Missouri, Columbia, Missouri 65211, USA
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34
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Park S, Rancour DM, Bednarek SY. In planta analysis of the cell cycle-dependent localization of AtCDC48A and its critical roles in cell division, expansion, and differentiation. PLANT PHYSIOLOGY 2008; 148:246-58. [PMID: 18660433 PMCID: PMC2528134 DOI: 10.1104/pp.108.121897] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2008] [Accepted: 07/14/2008] [Indexed: 05/18/2023]
Abstract
CDC48/p97 is a conserved homohexameric AAA-ATPase chaperone required for a variety of cellular processes but whose role in the development of a multicellular model system has not been examined. Here, we have used reverse genetics, visualization of a functional Arabidopsis (Arabidopsis thaliana) CDC48 fluorescent fusion protein, and morphological analysis to examine the subcellular distribution and requirements for AtCDC48A in planta. Homozygous Atcdc48A T-DNA insertion mutants arrest during seedling development, exhibiting decreased cell expansion and displaying pleiotropic defects in pollen and embryo development. Atcdc48A insertion alleles show significantly reduced male transmission efficiency due to defects in pollen tube growth. Yellow fluorescent protein-AtCDC48A, a fusion protein that functionally complements the insertion mutant defects, localizes in the nucleus and cytoplasm and is recruited to the division mid-zone during cytokinesis. The pattern of nuclear localization differs according to the stage of the cell cycle and differentiation state. Inducible expression of an Atcdc48A Walker A ATPase mutant in planta results in cytokinesis abnormalities, aberrant cell divisions, and root trichoblast differentiation defects apparent in excessive root hair emergence. At the biochemical level, our data suggest that the endogenous steady-state protein level of AtCDC48A is dependent upon the presence of ATPase-active AtCDC48A. These results demonstrate that CDC48A/p97 is critical for cytokinesis, cell expansion, and differentiation in plants.
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Affiliation(s)
- Sookhee Park
- Department of Biochemistry , University of Wisconsin, Madison, Wisconsin 53706, USA
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35
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Affiliation(s)
- José Aker
- Department of Agrotechnology and Food Sciences, Wageningen University, Dreijenlaan 3, 6703 HA Wageningen, The Netherlands
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36
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Folta KM, Paul AL, Mayfield JD, Ferl RJ. 14-3-3 isoforms participate in red light signaling and photoperiodic flowering. PLANT SIGNALING & BEHAVIOR 2008; 3:304-6. [PMID: 19841653 PMCID: PMC2634265 DOI: 10.4161/psb.3.5.5288] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2007] [Accepted: 11/12/2007] [Indexed: 05/08/2023]
Abstract
Members of the 14-3-3 family of proteins participate in signal transduction by modulating flux through various pathways. Potential subfunctionalization within this family has produced a suite of related proteins with diverse client interactions and discrete localization. The associated study assesses the biological roles of two specific 14-3-3 isoforms, using genetic, biochemical and physiological assays to ascertain potential nodes of interaction. Arabidopsis T-DNA insertion mutants representing the nu and mu isoforms exhibited a short, yet clear delay in flowering time on long days. Tests of hypocotyl growth inhibition under narrow bandwidth light indicated a hyposensitivity to red light, while responses to blue and far-red light were normal. These physiological tests suggest a mechanistic link between 14-3-3 proteins, red light sensing, and the pathways that control photoperiodic flowering. The precise entry point into the pathway was assessed using yeast two hybrid assays targeted against specific proteins active in the circadian oscillator, light transduction and photoperiodic flowering. Yeast two hybrid interaction was observed with CONSTANS (CO), and then confirmed with coimmunoprecipitation. Functional interaction with phyB leading to defects in flowering time and direct interaction with CONSTANS circumstantially places these specific 14-3-3 isoforms into the pathway that regulates the transition between vegetative and floral development.
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Affiliation(s)
- Kevin M Folta
- Plant Molecular and Cellular Biology Program and Horticultural Sciences Department; University of Florida; Gainesville, Florida USA
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37
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Abstract
Stomata play a pivotal role in the regulation of gas exchange in flowering plants and are distributed throughout the aerial epidermis. In leaves, the pattern of stomatal distribution is highly variable between species but is regulated by a mechanism that maintains a minimum of one cell spacing between stomata. In Arabidopsis, a number of the genetic components of this mechanism have been identified and include, SDD1, EPF1 and the putative receptors TMM and the ERECTA-gene family. A mitogen-activated protein (MAP) kinase signalling cascade is believed to act downstream of these putative receptors while a number of transcription factors including SPCH, MUTE and FAMA have been identified that control consecutive steps of stomatal development. The environment also has significant effects on stomatal development. In a number of species both light intensity and CO(2) concentrations have been shown to influence the frequency at which stomata develop on leaves. Long-distance signalling mechanisms have been implicated in these environmental responses with the conditions sensed by mature leaves determining the stomatal frequency in developing leaves. Thus, changes in the environment appear to act by modulating the developmental and patterning pathways to determine stomatal frequency.
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Affiliation(s)
- Stuart Casson
- School of Biological Sciences, University of Bristol, Woodland Road, Bristol, BS8 1UG, UK
| | - Julie E Gray
- Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield S10 2TN, UK
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38
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Aker J, Hesselink R, Engel R, Karlova R, Borst JW, Visser AJWG, de Vries SC. In vivo hexamerization and characterization of the Arabidopsis AAA ATPase CDC48A complex using forster resonance energy transfer-fluorescence lifetime imaging microscopy and fluorescence correlation spectroscopy. PLANT PHYSIOLOGY 2007; 145:339-50. [PMID: 17693538 PMCID: PMC2048723 DOI: 10.1104/pp.107.103986] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
The Arabidopsis (Arabidopsis thaliana) AAA ATPase CDC48A was fused to cerulean fluorescent protein and yellow fluorescent protein. AAA ATPases like CDC48 are only active in hexameric form. Förster resonance energy transfer-based fluorescence lifetime imaging microscopy using CDC48A-cerulean fluorescent protein and CDC48A-yellow fluorescent protein showed interaction between two adjacent protomers, demonstrating homo-oligomerization occurs in living plant cells. Interaction between CDC48A and the SOMATIC EMBRYOGENESIS RECEPTOR-LIKE KINASE1 (SERK1) transmembrane receptor occurs in very restricted domains at the plasma membrane. In these domains the predominant form of the fluorescently tagged CDC48A protein is a hexamer, suggesting that SERK1 is associated with the active form of CDC48A in vivo. SERK1 trans-phosphorylates CDC48A on Ser-41. Förster resonance energy transfer-fluorescence lifetime imaging microscopy was used to show that in vivo the C-terminal domains of CDC48A stay in close proximity. Employing fluorescence correlation spectroscopy, it was shown that CDC48A hexamers are part of larger complexes.
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Affiliation(s)
- José Aker
- Laboratory of Biochemistry, Wageningen University, 6703 HA Wageningen, The Netherlands
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39
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Gampala SS, Kim TW, He JX, Tang W, Deng Z, Bai MY, Guan S, Lalonde S, Sun Y, Gendron JM, Chen H, Shibagaki N, Ferl RJ, Ehrhardt D, Chong K, Burlingame AL, Wang ZY. An essential role for 14-3-3 proteins in brassinosteroid signal transduction in Arabidopsis. Dev Cell 2007; 13:177-89. [PMID: 17681130 PMCID: PMC2000337 DOI: 10.1016/j.devcel.2007.06.009] [Citation(s) in RCA: 337] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2007] [Revised: 05/12/2007] [Accepted: 06/18/2007] [Indexed: 12/27/2022]
Abstract
Brassinosteroids (BRs) are essential hormones for plant growth and development. BRs regulate gene expression by inducing dephosphorylation of two key transcription factors, BZR1 and BZR2/BES1, through a signal transduction pathway that involves cell-surface receptors (BRI1 and BAK1) and a GSK3 kinase (BIN2). How BR-regulated phosphorylation controls the activities of BZR1/BZR2 is not fully understood. Here, we show that BIN2-catalyzed phosphorylation of BZR1/BZR2 not only inhibits DNA binding, but also promotes binding to the 14-3-3 proteins. Mutations of a BIN2-phosphorylation site in BZR1 abolish 14-3-3 binding and lead to increased nuclear localization of BZR1 protein and enhanced BR responses in transgenic plants. Further, BR deficiency increases cytoplasmic localization, and BR treatment induces rapid nuclear localization of BZR1/BZR2. Thus, 14-3-3 binding is required for efficient inhibition of phosphorylated BR transcription factors, largely through cytoplasmic retention. This study demonstrates that multiple mechanisms are required for BR regulation of gene expression and plant growth.
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Affiliation(s)
- Srinivas S Gampala
- Department of Plant Biology, Carnegie Institution, Stanford, CA 94305, USA
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40
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Deng Z, Zhang X, Tang W, Oses-Prieto JA, Suzuki N, Gendron JM, Chen H, Guan S, Chalkley RJ, Peterman TK, Burlingame AL, Wang ZY. A proteomics study of brassinosteroid response in Arabidopsis. Mol Cell Proteomics 2007; 6:2058-71. [PMID: 17848588 PMCID: PMC2966871 DOI: 10.1074/mcp.m700123-mcp200] [Citation(s) in RCA: 114] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The plant steroid hormones brassinosteroids (BRs) play an important role in a wide range of developmental and physiological processes. How BR signaling regulates diverse processes remains unclear. To understand the molecular details of BR responses, we performed a proteomics study of BR-regulated proteins in Arabidopsis using two-dimensional DIGE coupled with LC-MS/MS. We identified 42 BR-regulated proteins, which are predicted to play potential roles in BR regulation of specific cellular processes, such as signaling, cytoskeleton rearrangement, vesicle trafficking, and biosynthesis of hormones and vitamins. Analyses of the BR-insensitive mutant bri1-116 and BR-hypersensitive mutant bzr1-1D identified five proteins (PATL1, PATL2, THI1, AtMDAR3, and NADP-ME2) affected both by BR treatment and in the mutants, suggesting their importance in BR action. Selected proteins were further studied using insertion knock-out mutants or immunoblotting. Interestingly about 80% of the BR-responsive proteins were not identified in previous microarray studies, and direct comparison between protein and RNA changes in BR mutants revealed a very weak correlation. RT-PCR analysis of selected genes revealed gene-specific kinetic relationships between RNA and protein responses. Furthermore BR-regulated posttranslational modification of BiP2 protein was detected as spot shifts in two-dimensional DIGE. This study provides novel insights into the molecular networks that link BR signaling to specific cellular and physiological responses.
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Affiliation(s)
- Zhiping Deng
- Department of Plant Biology, Carnegie Institution of Washington, Stanford, CA 94305
| | - Xin Zhang
- Mass Spectrometry Facility, Department of Pharmaceutical Chemistry, University of California, San Francisco CA 94143
| | - Wenqiang Tang
- Department of Plant Biology, Carnegie Institution of Washington, Stanford, CA 94305
| | - Juan A Oses-Prieto
- Mass Spectrometry Facility, Department of Pharmaceutical Chemistry, University of California, San Francisco CA 94143
| | - Nagi Suzuki
- Mass Spectrometry Facility, Department of Pharmaceutical Chemistry, University of California, San Francisco CA 94143
| | - Joshua M Gendron
- Department of Plant Biology, Carnegie Institution of Washington, Stanford, CA 94305
- Department of Biological Sciences, Stanford University, Stanford, CA 94305
| | - Huanjing Chen
- Department of Plant Biology, Carnegie Institution of Washington, Stanford, CA 94305
| | - Shenheng Guan
- Mass Spectrometry Facility, Department of Pharmaceutical Chemistry, University of California, San Francisco CA 94143
| | - Robert J. Chalkley
- Mass Spectrometry Facility, Department of Pharmaceutical Chemistry, University of California, San Francisco CA 94143
| | - T. Kaye Peterman
- Department of Biological Sciences, Wellesley College, Wellesley, MA 02481
| | - Alma L. Burlingame
- Mass Spectrometry Facility, Department of Pharmaceutical Chemistry, University of California, San Francisco CA 94143
| | - Zhi-Yong Wang
- Department of Plant Biology, Carnegie Institution of Washington, Stanford, CA 94305
- To whom correspondence should be addressed: Department of Plant Biology, Carnegie Institution of Washington, 260 Panama Street, Stanford, CA 94305. Phone: 650-325-1521 ext 205. Fax: 650-325-6857
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41
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Ryu H, Kim K, Cho H, Park J, Choe S, Hwang I. Nucleocytoplasmic shuttling of BZR1 mediated by phosphorylation is essential in Arabidopsis brassinosteroid signaling. THE PLANT CELL 2007; 19:2749-62. [PMID: 17873094 PMCID: PMC2048706 DOI: 10.1105/tpc.107.053728] [Citation(s) in RCA: 231] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Phytohormone brassinosteroids (BRs) play critical roles in plant growth and development. BR acts by modulating the phosphorylation status of two key transcriptional factors, BRI1 EMS SUPPRESSOR1 and BRASSINAZOLE RESISTANT1 (BZR1), through the action of BRASSINOSTEROID INSENSITIVE1/BRI1 ASSOCIATED RECEPTOR KINASE1 receptors and a GSK3 kinase, BRASSINOSTEROID INSENSITIVE2 (BIN2). It is still unknown how the perception of BR at the plasma membrane connects to the expression of BR target genes in the nucleus. We show here that BZR1 functions as a nucleocytoplasmic shuttling protein and GSK3-like kinases induce the nuclear export of BZR1 by modulating BZR1 interaction with the 14-3-3 proteins. BR-activated phosphatase mediates rapid nuclear localization of BZR1. Besides the phosphorylation domain for 14-3-3 binding, another phosphorylation domain in BZR1 is required for the BIN2-induced nuclear export of BZR1. Mutations of putative phosphorylation sites in two distinct domains enhance the nuclear retention of BZR1 and BR responses in transgenic plants. We propose that the spatial redistribution of BZR1 is critical for proper BR signaling in plant growth and development.
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Affiliation(s)
- Hojin Ryu
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Korea
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42
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Schweighofer A, Kazanaviciute V, Scheikl E, Teige M, Doczi R, Hirt H, Schwanninger M, Kant M, Schuurink R, Mauch F, Buchala A, Cardinale F, Meskiene I. The PP2C-type phosphatase AP2C1, which negatively regulates MPK4 and MPK6, modulates innate immunity, jasmonic acid, and ethylene levels in Arabidopsis. THE PLANT CELL 2007; 19:2213-24. [PMID: 17630279 PMCID: PMC1955703 DOI: 10.1105/tpc.106.049585] [Citation(s) in RCA: 228] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Wound signaling pathways in plants are mediated by mitogen-activated protein kinases (MAPKs) and stress hormones, such as ethylene and jasmonates. In Arabidopsis thaliana, the transmission of wound signals by MAPKs has been the subject of detailed investigations; however, the involvement of specific phosphatases in wound signaling is not known. Here, we show that AP2C1, an Arabidopsis Ser/Thr phosphatase of type 2C, is a novel stress signal regulator that inactivates the stress-responsive MAPKs MPK4 and MPK6. Mutant ap2c1 plants produce significantly higher amounts of jasmonate upon wounding and are more resistant to phytophagous mites (Tetranychus urticae). Plants with increased AP2C1 levels display lower wound activation of MAPKs, reduced ethylene production, and compromised innate immunity against the necrotrophic pathogen Botrytis cinerea. Our results demonstrate a key role for the AP2C1 phosphatase in regulating stress hormone levels, defense responses, and MAPK activities in Arabidopsis and provide evidence that the activity of AP2C1 might control the plant's response to B. cinerea.
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Affiliation(s)
- Alois Schweighofer
- Max F. Perutz Laboratories of the University of Viena, 1030 Viena, Austria
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43
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Wang H, Chevalier D, Larue C, Ki Cho S, Walker JC. The Protein Phosphatases and Protein Kinases of Arabidopsis thaliana. THE ARABIDOPSIS BOOK 2007; 5:e0106. [PMID: 22303230 PMCID: PMC3243368 DOI: 10.1199/tab.0106] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Affiliation(s)
| | | | | | | | - John C. Walker
- Corresponding author: Division of Biological Sciences, University of Missouri, Columbia MO 65211 USA,
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44
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Park S, Rancour DM, Bednarek SY. Protein domain-domain interactions and requirements for the negative regulation of Arabidopsis CDC48/p97 by the plant ubiquitin regulatory X (UBX) domain-containing protein, PUX1. J Biol Chem 2006; 282:5217-24. [PMID: 17190830 DOI: 10.1074/jbc.m609042200] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
CDC48/p97 is an essential AAA-ATPase chaperone that functions in numerous diverse cellular activities through its interaction with specific adapter proteins. The ubiquitin regulatory X (UBX)-containing protein, PUX1, functions to regulate the hexameric structure and ATPase activity of AtCDC48. To characterize the biochemical mechanism of PUX1 action on AtCDC48, we have defined domains of both PUX1 and AtCDC48 that are critical for interaction and oligomer disassembly. Binding of PUX1 to AtCDC48 was mediated through a region containing both the UBX domain and the immediate C-terminal flanking amino acids (UBX-C). Like other UBX domains, the primary binding site for the UBX-C of PUX1 is the N(a) domain of AtCDC48. Alternative plant PUX protein UBX domains also bind AtCDC48 through the N terminus but were found not to be able to substitute for the action imparted by the UBX-C of PUX1 in hexamer disassembly, suggesting unique features for the UBX-C of PUX1. We propose that the PUX1 UBX-C domain modulates a second binding site on AtCDC48 required for the N-terminal domain of PUX1 to interact with and promote dissociation of the AtCDC48 hexamer. Utilizing Atcdc48 ATP hydrolysis and binding mutants, we demonstrate that PUX1 binding was not affected but that hexamer disassembly was significantly influenced by the ATP status of AtCDC48. ATPase activity in both the D1 and the D2 domains was critical for PUX1-mediated AtCDC48 hexamer disassembly. Together these results provide new mechanistic insight into how the hexameric status and ATPase activity of AtCDC48 are modulated.
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Affiliation(s)
- Sookhee Park
- Department of Biochemistry, University of Wisconsin, Madison, Wisconsin 53706, USA
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45
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Aker J, Borst JW, Karlova R, de Vries S. The Arabidopsis thaliana AAA protein CDC48A interacts in vivo with the somatic embryogenesis receptor-like kinase 1 receptor at the plasma membrane. J Struct Biol 2006; 156:62-71. [PMID: 16621602 DOI: 10.1016/j.jsb.2006.03.004] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2005] [Revised: 03/01/2006] [Accepted: 03/08/2006] [Indexed: 10/24/2022]
Abstract
Fluorescent cell division cycle (CDC)48 proteins were studied in living plant protoplasts. CDC48A and somatic embryogenesis receptor like kinase 1 (SERK1) were found to co-localize in the endoplasmatic reticulum (ER) and at the plasma membrane (PM), but not in endosomal compartments. Fluorescent lifetime imaging microscopy (FLIM) was used to detect Förster resonance energy transfer (FRET) between CrFP/YFP-tagged CDC48A and SERK1. FRET is indicative of direct protein-protein interaction. CDC48A was found to interact only with SERK1 in small areas at the PM, but not in endosomes. These findings confirm and extend our previous findings that CDC48A in plants directly interacts with SERK1.
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Affiliation(s)
- José Aker
- Laboratory of Biochemistry, Wageningen University, Dreijenlaan 3, 6703 HA Wageningen, The Netherlands
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46
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Kinkema M, Scott PT, Gresshoff PM. Legume nodulation: successful symbiosis through short- and long-distance signalling. FUNCTIONAL PLANT BIOLOGY : FPB 2006; 33:707-721. [PMID: 32689281 DOI: 10.1071/fp06056] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2006] [Accepted: 05/22/2006] [Indexed: 05/07/2023]
Abstract
Nodulation in legumes provides a major conduit of available nitrogen into the biosphere. The development of nitrogen-fixing nodules results from a symbiotic interaction between soil bacteria, commonly called rhizobia, and legume plants. Molecular genetic analysis in both model and agriculturally important legume species has resulted in the identification of a variety of genes that are essential for the establishment, maintenance and regulation of this symbiosis. Autoregulation of nodulation (AON) is a major internal process by which nodule numbers are controlled through prior nodulation events. Characterisation of AON-deficient mutants has revealed a novel systemic signal transduction pathway controlled by a receptor-like kinase. This review reports our present level of understanding on the short- and long-distance signalling networks controlling early nodulation events and AON.
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Affiliation(s)
- Mark Kinkema
- ARC Centre of Excellence for Integrative Legume Research, The University of Queensland, St Lucia, Brisbane, Qld 4072, Australia
| | - Paul T Scott
- ARC Centre of Excellence for Integrative Legume Research, The University of Queensland, St Lucia, Brisbane, Qld 4072, Australia
| | - Peter M Gresshoff
- ARC Centre of Excellence for Integrative Legume Research, The University of Queensland, St Lucia, Brisbane, Qld 4072, Australia
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47
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Karlova R, Boeren S, Russinova E, Aker J, Vervoort J, de Vries S. The Arabidopsis SOMATIC EMBRYOGENESIS RECEPTOR-LIKE KINASE1 protein complex includes BRASSINOSTEROID-INSENSITIVE1. THE PLANT CELL 2006; 18:626-38. [PMID: 16473966 PMCID: PMC1383638 DOI: 10.1105/tpc.105.039412] [Citation(s) in RCA: 104] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Arabidopsis thaliana SOMATIC EMBRYOGENESIS RECEPTOR-LIKE KINASE1 (SERK1) is a leucine-rich repeat receptor-like kinase (LRR-RLK) involved in the acquisition of embryogenic competence and in male sporogenesis. To determine the composition of the SERK1 signaling complex in vivo, we generated plants expressing the SERK1 protein fused to cyan fluorescent protein under SERK1 promoter control. The membrane receptor complex was immunoprecipitated from seedlings, and the coimmunoprecipitating proteins were identified using liquid chromatography/matrix-assisted laser desorption ionization-time of flight/mass spectrometry of the trypsin-released peptides. This approach identified two other LRR-RLKs, the BRASSINOSTEROID-INSENSITIVE1 (BRI1) receptor and its coreceptor, the SERK3 or BRI1-ASSOCIATED KINASE1 protein. In addition, KINASE-ASSOCIATED PROTEIN PHOSPHATASE, CDC48A, and 14-3-3nu were found. Finally, the MADS box transcription factor AGAMOUS-LIKE15 and an uncharacterized zinc finger protein, a member of the CONSTANS family, were identified as part of the SERK1 complex. Using blue native gel electrophoresis, we show that SERK1 and SERK3 are part of BRI1-containing multiple protein complexes with relative masses between 300 and 500 kD. The SERK1 mutant allele serk1-1 enhances the phenotype of the weak BRI1 allele bri1-119. Collectively, these results suggest that apart from SERK3, SERK1 is also involved in the brassinolide signaling pathway.
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Affiliation(s)
- Rumyana Karlova
- Laboratory of Biochemistry, Wageningen University, 6703 HA Wageningen, The Netherlands
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48
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Johnson KL, Ingram GC. Sending the right signals: regulating receptor kinase activity. CURRENT OPINION IN PLANT BIOLOGY 2005; 8:648-56. [PMID: 16183327 DOI: 10.1016/j.pbi.2005.09.007] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2005] [Accepted: 09/13/2005] [Indexed: 05/04/2023]
Abstract
Knowledge of the functions of plant receptor-like-kinases (RLKs) is increasing rapidly, but how their cytoplasmic signalling activity is regulated and how signals are transduced to cytoplasmic or nuclear proteins remain important questions. Recent studies, particularly of the BRASSINOSTEROID INSENSITIVE1 RLK, have begun to shed light on the mechanistic details of RLK activation, including the possible role of ligand binding. Studies of this and other RLKs have also highlighted the potential importance of hetero-oligomerisation and receptor internalisation in RLK signalling. Finally, a range of potential regulatory proteins and putative downstream signalling substrates have been identified for various RLKs. Despite some similarities with animal receptor kinase signalling systems, mechanisms that affect the intracellular behaviour, regulation and interactions of RLKs appear to be very diverse, potentially explaining how signalling specificity is maintained at the cytoplasmic level.
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Affiliation(s)
- Kim L Johnson
- Institute of Molecular Plant Sciences, Rutherford Building, University of Edinburgh, Kings Buildings, Edinburgh EH9 3JR, UK
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49
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Kwaaitaal MACJ, de Vries SC, Russinova E. Arabidopsis thaliana Somatic Embryogenesis Receptor Kinase 1 protein is present in sporophytic and gametophytic cells and undergoes endocytosis. PROTOPLASMA 2005; 226:55-65. [PMID: 16231101 DOI: 10.1007/s00709-005-0111-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2005] [Accepted: 03/30/2005] [Indexed: 05/04/2023]
Abstract
Arabidopsis thaliana plants expressing AtSERK1 fused to yellow-fluorescent protein were generated. Fluorescence was detected predominantly at the cell periphery, most likely the plasma membrane, of cells in ovules, embryo sacs, anthers, and embryos and in seedlings. The AtSERK1 protein was detected in diverse cell types including the epidermis and the vascular bundles. In some cells, fluorescent receptors were seen in small vesicle-like compartments. After application of the fungal toxin Brefeldin A, the fluorescent receptors were rapidly internalized in the root meristem and root vascular tissue. We conclude that the AtSERK1 receptor functions in a common signalling pathway employed in both sporophytic and gametophytic cells.
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Affiliation(s)
- M A C J Kwaaitaal
- Laboratory of Biochemistry, Wageningen University, Wageningen, The Netherlands
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