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Huang WRH, Braam C, Kretschmer C, Villanueva SL, Liu H, Ferik F, van der Burgh AM, Wu J, Zhang L, Nürnberger T, Wang Y, Seidl MF, Evangelisti E, Stuttmann J, Joosten MHAJ. Receptor-like cytoplasmic kinases of different subfamilies differentially regulate SOBIR1/BAK1-mediated immune responses in Nicotiana benthamiana. Nat Commun 2024; 15:4339. [PMID: 38773116 PMCID: PMC11109355 DOI: 10.1038/s41467-024-48313-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 04/26/2024] [Indexed: 05/23/2024] Open
Abstract
Cell-surface receptors form the front line of plant immunity. The leucine-rich repeat (LRR)-receptor-like kinases SOBIR1 and BAK1 are required for the functionality of the tomato LRR-receptor-like protein Cf-4, which detects the secreted effector Avr4 of the pathogenic fungus Fulvia fulva. Here, we show that the kinase domains of SOBIR1 and BAK1 directly phosphorylate each other and that residues Thr522 and Tyr469 of the kinase domain of Nicotiana benthamiana SOBIR1 are required for its kinase activity and for interacting with signalling partners, respectively. By knocking out multiple genes belonging to different receptor-like cytoplasmic kinase (RLCK)-VII subfamilies in N. benthamiana:Cf-4, we show that members of RLCK-VII-6, -7, and -8 differentially regulate the Avr4/Cf-4-triggered biphasic burst of reactive oxygen species. In addition, members of RLCK-VII-7 play an essential role in resistance against the oomycete pathogen Phytophthora palmivora. Our study provides molecular evidence for the specific roles of RLCKs downstream of SOBIR1/BAK1-containing immune complexes.
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Affiliation(s)
- Wen R H Huang
- Laboratory of Phytopathology, Wageningen University, Droevendaalsesteeg 1, 6708 PB, Wageningen, The Netherlands.
- The Sainsbury Laboratory, University of East Anglia, Norwich, United Kingdom.
| | - Ciska Braam
- Laboratory of Phytopathology, Wageningen University, Droevendaalsesteeg 1, 6708 PB, Wageningen, The Netherlands
| | - Carola Kretschmer
- Institute for Biology, Department of Plant Genetics, Martin Luther University Halle-Wittenberg, 06120, Halle, Germany
| | - Sergio Landeo Villanueva
- Laboratory of Phytopathology, Wageningen University, Droevendaalsesteeg 1, 6708 PB, Wageningen, The Netherlands
| | - Huan Liu
- Laboratory of Phytopathology, Wageningen University, Droevendaalsesteeg 1, 6708 PB, Wageningen, The Netherlands
| | - Filiz Ferik
- Institute for Biology, Department of Plant Genetics, Martin Luther University Halle-Wittenberg, 06120, Halle, Germany
| | - Aranka M van der Burgh
- Laboratory of Phytopathology, Wageningen University, Droevendaalsesteeg 1, 6708 PB, Wageningen, The Netherlands
- Teaching and Learning Centre, Wageningen University & Research, Droevendaalsesteeg 4, 6708 PB, Wageningen, The Netherlands
| | - Jinbin Wu
- Laboratory of Phytopathology, Wageningen University, Droevendaalsesteeg 1, 6708 PB, Wageningen, The Netherlands
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Lisha Zhang
- Department of Plant Biochemistry, Centre for Plant Molecular Biology (ZMBP), Eberhard Karls University Tübingen, Auf der Morgenstelle 32, D-72076, Tübingen, Germany
| | - Thorsten Nürnberger
- Department of Plant Biochemistry, Centre for Plant Molecular Biology (ZMBP), Eberhard Karls University Tübingen, Auf der Morgenstelle 32, D-72076, Tübingen, Germany
| | - Yulu Wang
- Laboratory of Biomanufacturing and Food Engineering, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Michael F Seidl
- Theoretical Biology & Bioinformatics, Department of Biology, Utrecht University, 3584 CH, Utrecht, the Netherlands
| | - Edouard Evangelisti
- Laboratory of Phytopathology, Wageningen University, Droevendaalsesteeg 1, 6708 PB, Wageningen, The Netherlands
- Université Côte d'Azur, INRAE UMR 1355, CNRS UMR 7254, Institut Sophia Agrobiotech (ISA), 06903, Sophia Antipolis, France
| | - Johannes Stuttmann
- Institute for Biology, Department of Plant Genetics, Martin Luther University Halle-Wittenberg, 06120, Halle, Germany
- Aix Marseille University, CEA, CNRS, BIAM, UMR7265, LEMiRE (Microbial Ecology of the Rhizosphere), 13115, Saint‑Paul lez Durance, France
| | - Matthieu H A J Joosten
- Laboratory of Phytopathology, Wageningen University, Droevendaalsesteeg 1, 6708 PB, Wageningen, The Netherlands.
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Mo Z, Zhang Y, Hou M, Hu L, Zhai M, Xuan J. Transcriptional dynamics reveals the asymmetrical events underlying graft union formation in pecan (Carya illinoinensis). TREE PHYSIOLOGY 2024; 44:tpae040. [PMID: 38598328 DOI: 10.1093/treephys/tpae040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 03/25/2024] [Accepted: 04/03/2024] [Indexed: 04/12/2024]
Abstract
Grafting is a widely used technique for pecan propagation; however, the background molecular events underlying grafting are still poorly understood. In our study, the graft partners during pecan [Carya illinoinensis (Wangenh.) K. Koch] graft union formation were separately sampled for RNA-seq, and the transcriptional dynamics were described via weighted gene co-expression network analysis. To reveal the main events underlying grafting, the correlations between modules and grafting traits were analyzed. Functional annotation showed that during the entire graft process, signal transduction was activated in the scion, while messenger RNA splicing was induced in the rootstock. At 2 days after grafting, the main processes occurring in the scion were associated with protein synthesis and processing, while the primary processes occurring in the rootstock were energy release-related. During the period of 7-14 days after grafting, defense response was a critical process taking place in the scion; however, the main process functioning in the rootstock was photosynthesis. From 22 to 32 days after grafting, the principal processes taking place in the scion were jasmonic acid biosynthesis and defense response, whereas the highly activated processes associated with the rootstock were auxin biosynthesis and plant-type secondary cell wall biogenesis. To further prove that the graft partners responded asymmetrically to stress, hydrogen peroxide contents as well as peroxidase and β-1,3-glucanase activities were detected, and the results showed that their levels were increased in the scion not the rootstock at certain time points after grafting. Our study reveals that the scion and rootstock might respond asymmetrically to grafting in pecan, and the scion was likely associated with stress response, while the rootstock was probably involved in energy supply and xylem bridge differentiation during graft union formation.
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Affiliation(s)
- Zhenghai Mo
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, NO. 1 Road, Qianhuhou Villiage, Xuanwu District, Nanjing 210014, China
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, NO. 1 Road, Qianhuhou Villiage, Xuanwu District, Nanjing 210014, China
| | - Yan Zhang
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, NO. 1 Road, Qianhuhou Villiage, Xuanwu District, Nanjing 210014, China
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, NO. 1 Road, Qianhuhou Villiage, Xuanwu District, Nanjing 210014, China
| | - Mengxin Hou
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, NO. 1 Road, Qianhuhou Villiage, Xuanwu District, Nanjing 210014, China
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, NO. 1 Road, Qianhuhou Villiage, Xuanwu District, Nanjing 210014, China
| | - Longjiao Hu
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, NO. 1 Road, Qianhuhou Villiage, Xuanwu District, Nanjing 210014, China
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, NO. 1 Road, Qianhuhou Villiage, Xuanwu District, Nanjing 210014, China
| | - Min Zhai
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, NO. 1 Road, Qianhuhou Villiage, Xuanwu District, Nanjing 210014, China
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, NO. 1 Road, Qianhuhou Villiage, Xuanwu District, Nanjing 210014, China
| | - Jiping Xuan
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, NO. 1 Road, Qianhuhou Villiage, Xuanwu District, Nanjing 210014, China
- Jiangsu Engineering Research Center for the Germplasm Innovation and Utilization of Pecan, NO. 1 Road, Qianhuhou Villiage, Xuanwu District, Nanjing 210014, China
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Huang WRH, Joosten MHAJ. Immune signaling: receptor-like proteins make the difference. TRENDS IN PLANT SCIENCE 2024:S1360-1385(24)00068-2. [PMID: 38594153 DOI: 10.1016/j.tplants.2024.03.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 03/11/2024] [Accepted: 03/14/2024] [Indexed: 04/11/2024]
Abstract
To resist biotic attacks, plants have evolved a sophisticated, receptor-based immune system. Cell-surface immune receptors, which are either receptor-like kinases (RLKs) or receptor-like proteins (RLPs), form the front line of the plant defense machinery. RLPs lack a cytoplasmic kinase domain for downstream immune signaling, and leucine-rich repeat (LRR)-containing RLPs constitutively associate with the RLK SOBIR1. The RLP/SOBIR1 complex was proposed to be the bimolecular equivalent of genuine RLKs. However, it appears that the molecular mechanisms by which RLP/SOBIR1 complexes and RLKs mount immunity show some striking differences. Here, we summarize the differences between RLP/SOBIR1 and RLK signaling, focusing on the way these receptors recruit the BAK1 co-receptor and elaborating on the negative crosstalk taking place between the two signaling networks.
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Affiliation(s)
- Wen R H Huang
- Laboratory of Phytopathology, Wageningen University, Droevendaalsesteeg 1, 6708PB Wageningen, The Netherlands
| | - Matthieu H A J Joosten
- Laboratory of Phytopathology, Wageningen University, Droevendaalsesteeg 1, 6708PB Wageningen, The Netherlands.
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Petutschnig EK, Pierdzig L, Mittendorf J, Niebisch JM, Lipka V. A novel fluorescent protein pair facilitates FLIM-FRET analysis of plant immune receptor interaction under native conditions. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:746-759. [PMID: 37878766 DOI: 10.1093/jxb/erad418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 10/24/2023] [Indexed: 10/27/2023]
Abstract
Elucidating protein-protein interactions is crucial for our understanding of molecular processes within living organisms. Microscopy-based techniques can detect protein-protein interactions in vivo at the single-cell level and provide information on their subcellular location. Fluorescence lifetime imaging microscopy (FLIM)-Förster resonance energy transfer (FRET) is one of the most robust imaging approaches, but it is still very challenging to apply this method to proteins which are expressed under native conditions. Here we describe a novel combination of fluorescence proteins (FPs), mCitrine and mScarlet-I, which is ideally suited for FLIM-FRET studies of low abundance proteins expressed from their native promoters in stably transformed plants. The donor mCitrine displays excellent brightness in planta, near-mono-exponential fluorescence decay, and a comparatively long fluorescence lifetime. Moreover, the FRET pair has a good spectral overlap and a large Förster radius. This allowed us to detect constitutive as well as ligand-induced interaction of the Arabidopsis chitin receptor components CERK1 and LYK5 in a set of proof-of-principle experiments. Due to the good brightness of the acceptor mScarlet-I, the FP combination can be readily utilized for co-localization studies. The FP pair is also suitable for co-immunoprecipitation experiments and western blotting, facilitating a multi-method approach for studying and confirming protein-protein interactions.
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Affiliation(s)
- Elena Kristin Petutschnig
- Department of Plant Cell Biology, Albrecht-von-Haller-Institute for Plant Sciences, Georg-August-University Göttingen, Julia-Lermontowa-Weg 3, D-37077 Göttingen, Germany
- Central Microscopy Facility of the Faculty of Biology & Psychology, Georg-August-University Göttingen, Julia-Lermontowa-Weg 3, D-37077 Göttingen, Germany
| | - Leon Pierdzig
- Department of Plant Cell Biology, Albrecht-von-Haller-Institute for Plant Sciences, Georg-August-University Göttingen, Julia-Lermontowa-Weg 3, D-37077 Göttingen, Germany
| | - Josephine Mittendorf
- Department of Plant Cell Biology, Albrecht-von-Haller-Institute for Plant Sciences, Georg-August-University Göttingen, Julia-Lermontowa-Weg 3, D-37077 Göttingen, Germany
| | - Jule Meret Niebisch
- Department of Plant Cell Biology, Albrecht-von-Haller-Institute for Plant Sciences, Georg-August-University Göttingen, Julia-Lermontowa-Weg 3, D-37077 Göttingen, Germany
| | - Volker Lipka
- Department of Plant Cell Biology, Albrecht-von-Haller-Institute for Plant Sciences, Georg-August-University Göttingen, Julia-Lermontowa-Weg 3, D-37077 Göttingen, Germany
- Central Microscopy Facility of the Faculty of Biology & Psychology, Georg-August-University Göttingen, Julia-Lermontowa-Weg 3, D-37077 Göttingen, Germany
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Zhou D, Chen X, Chen X, Xia Y, Liu J, Zhou G. Plant immune receptors interact with hemibiotrophic pathogens to activate plant immunity. Front Microbiol 2023; 14:1252039. [PMID: 37876778 PMCID: PMC10591190 DOI: 10.3389/fmicb.2023.1252039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 09/20/2023] [Indexed: 10/26/2023] Open
Abstract
Phytopathogens pose a devastating threat to the productivity and yield of crops by causing destructive plant diseases in natural and agricultural environments. Hemibiotrophic pathogens have a variable-length biotrophic phase before turning to necrosis and are among the most invasive plant pathogens. Plant resistance to hemibiotrophic pathogens relies mainly on the activation of innate immune responses. These responses are typically initiated after the plant plasma membrane and various plant immune receptors detect immunogenic signals associated with pathogen infection. Hemibiotrophic pathogens evade pathogen-triggered immunity by masking themselves in an arms race while also enhancing or manipulating other receptors to promote virulence. However, our understanding of plant immune defenses against hemibiotrophic pathogens is highly limited due to the intricate infection mechanisms. In this review, we summarize the strategies that different hemibiotrophic pathogens interact with host immune receptors to activate plant immunity. We also discuss the significant role of the plasma membrane in plant immune responses, as well as the current obstacles and potential future research directions in this field. This will enable a more comprehensive understanding of the pathogenicity of hemibiotrophic pathogens and how distinct plant immune receptors oppose them, delivering valuable data for the prevention and management of plant diseases.
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Affiliation(s)
- Diao Zhou
- Key Laboratory of National Forestry and Grassland Administration on Control of Artificial Forest Diseases and Pests in South China, Central South University of Forestry and Technology, Changsha, China
- Hunan Provincial Key Laboratory for Control of Forest Diseases and Pests, Central South University of Forestry and Technology, Changsha, China
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha, China
| | - Xingzhou Chen
- Key Laboratory of National Forestry and Grassland Administration on Control of Artificial Forest Diseases and Pests in South China, Central South University of Forestry and Technology, Changsha, China
- Hunan Provincial Key Laboratory for Control of Forest Diseases and Pests, Central South University of Forestry and Technology, Changsha, China
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha, China
| | - Xinggang Chen
- Key Laboratory of National Forestry and Grassland Administration on Control of Artificial Forest Diseases and Pests in South China, Central South University of Forestry and Technology, Changsha, China
- Hunan Provincial Key Laboratory for Control of Forest Diseases and Pests, Central South University of Forestry and Technology, Changsha, China
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha, China
| | - Yandong Xia
- Key Laboratory of National Forestry and Grassland Administration on Control of Artificial Forest Diseases and Pests in South China, Central South University of Forestry and Technology, Changsha, China
- Hunan Provincial Key Laboratory for Control of Forest Diseases and Pests, Central South University of Forestry and Technology, Changsha, China
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha, China
| | - Junang Liu
- Key Laboratory of National Forestry and Grassland Administration on Control of Artificial Forest Diseases and Pests in South China, Central South University of Forestry and Technology, Changsha, China
- Hunan Provincial Key Laboratory for Control of Forest Diseases and Pests, Central South University of Forestry and Technology, Changsha, China
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha, China
| | - Guoying Zhou
- Key Laboratory of National Forestry and Grassland Administration on Control of Artificial Forest Diseases and Pests in South China, Central South University of Forestry and Technology, Changsha, China
- Hunan Provincial Key Laboratory for Control of Forest Diseases and Pests, Central South University of Forestry and Technology, Changsha, China
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha, China
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Chen L, Xiao J, Huang Z, Zhou Q, Liu B. Quantitative phosphoproteomic analysis of chitin-triggered immune responses in the plasma membrane of Arabidopsis. FUNCTIONAL PLANT BIOLOGY : FPB 2023; 50:219-229. [PMID: 36396124 DOI: 10.1071/fp22045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 10/25/2022] [Indexed: 06/16/2023]
Abstract
Plant diseases seriously damage crop production, and most plant diseases are caused by fungi. Fungal cell walls contain chitin, a highly conserved component that is widely recognised by plants as a PAMP (pathogen-associated molecular pattern) to induce defence responses. The molecular mechanisms that function downstream of chitin-triggered intracellular phosphorylation remain largely unknown. In this study, we performed quantitative phosphoproteomics analysis to study protein phosphorylation changes in the plasma membrane after chitin treatment in Arabidopsis thaliana L. seedlings. Proteins with altered phosphorylation status after chitin treatment participated in biological processes ranging from signalling, localisation, and transport, to biogenesis, processing, and metabolism, suggesting that PAMP signalling targets multiple processes to coordinate the immune response. These results provide important insights into the molecular mechanism of chitin-induced plant immunity.
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Affiliation(s)
- Lijuan Chen
- Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Jiahui Xiao
- Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Zhanhao Huang
- Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Qi Zhou
- Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Bing Liu
- Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
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7
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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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8
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Yu G, Derkacheva M, Rufian JS, Brillada C, Kowarschik K, Jiang S, Derbyshire P, Ma M, DeFalco TA, Morcillo RJL, Stransfeld L, Wei Y, Zhou J, Menke FLH, Trujillo M, Zipfel C, Macho AP. The Arabidopsis E3 ubiquitin ligase PUB4 regulates BIK1 and is targeted by a bacterial type-III effector. EMBO J 2022; 41:e107257. [PMID: 36314733 PMCID: PMC9713774 DOI: 10.15252/embj.2020107257] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 09/26/2022] [Accepted: 10/07/2022] [Indexed: 12/03/2022] Open
Abstract
Plant immunity is tightly controlled by a complex and dynamic regulatory network, which ensures optimal activation upon detection of potential pathogens. Accordingly, each component of this network is a potential target for manipulation by pathogens. Here, we report that RipAC, a type III-secreted effector from the bacterial pathogen Ralstonia solanacearum, targets the plant E3 ubiquitin ligase PUB4 to inhibit pattern-triggered immunity (PTI). PUB4 plays a positive role in PTI by regulating the homeostasis of the central immune kinase BIK1. Before PAMP perception, PUB4 promotes the degradation of non-activated BIK1, while after PAMP perception, PUB4 contributes to the accumulation of activated BIK1. RipAC leads to BIK1 degradation, which correlates with its PTI-inhibitory activity. RipAC causes a reduction in pathogen-associated molecular pattern (PAMP)-induced PUB4 accumulation and phosphorylation. Our results shed light on the role played by PUB4 in immune regulation, and illustrate an indirect targeting of the immune signalling hub BIK1 by a bacterial effector.
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Affiliation(s)
- Gang Yu
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant SciencesChinese Academy of SciencesShanghaiChina
| | - Maria Derkacheva
- The Sainsbury LaboratoryUniversity of East Anglia, Norwich Research ParkNorwichUK
- Present address:
The Earlham InstituteNorwich Research ParkNorwichUK
| | - Jose S Rufian
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant SciencesChinese Academy of SciencesShanghaiChina
| | - Carla Brillada
- Faculty of Biology, Institute of Biology IIAlbert‐Ludwigs‐University FreiburgFreiburgGermany
| | | | - Shushu Jiang
- The Sainsbury LaboratoryUniversity of East Anglia, Norwich Research ParkNorwichUK
- Present address:
Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell ScienceChinese Academy of SciencesShanghaiChina
| | - Paul Derbyshire
- The Sainsbury LaboratoryUniversity of East Anglia, Norwich Research ParkNorwichUK
| | - Miaomiao Ma
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina
| | - Thomas A DeFalco
- Institute of Plant and Microbial Biology, Zurich‐Basel Plant Science CenterUniversity of ZurichZurichSwitzerland
| | - Rafael J L Morcillo
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant SciencesChinese Academy of SciencesShanghaiChina
| | - Lena Stransfeld
- The Sainsbury LaboratoryUniversity of East Anglia, Norwich Research ParkNorwichUK
- Institute of Plant and Microbial Biology, Zurich‐Basel Plant Science CenterUniversity of ZurichZurichSwitzerland
| | - Yali Wei
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant SciencesChinese Academy of SciencesShanghaiChina
- University of Chinese Academy of SciencesBeijingChina
| | - Jian‐Min Zhou
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijingChina
| | - Frank L H Menke
- The Sainsbury LaboratoryUniversity of East Anglia, Norwich Research ParkNorwichUK
| | - Marco Trujillo
- Faculty of Biology, Institute of Biology IIAlbert‐Ludwigs‐University FreiburgFreiburgGermany
- Leibniz Institute for Plant BiochemistryHalle (Saale)Germany
| | - Cyril Zipfel
- The Sainsbury LaboratoryUniversity of East Anglia, Norwich Research ParkNorwichUK
- Institute of Plant and Microbial Biology, Zurich‐Basel Plant Science CenterUniversity of ZurichZurichSwitzerland
| | - Alberto P Macho
- Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant SciencesChinese Academy of SciencesShanghaiChina
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Guo Z, Mei Y, Wang D, Xiao D, Tang X, Gong Y, Xu X, Wang NN. Identification and Functional Analysis of Key Autophosphorylation Residues of Arabidopsis Senescence Associated Receptor-like Kinase. Int J Mol Sci 2022; 23:ijms23168873. [PMID: 36012141 PMCID: PMC9408895 DOI: 10.3390/ijms23168873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 07/29/2022] [Accepted: 08/06/2022] [Indexed: 11/23/2022] Open
Abstract
Reversible protein phosphorylation mediated by protein kinases and phosphatases plays important roles in the regulation of leaf senescence. We previously reported that the senescence-associated leucine-rich repeat receptor-like kinase AtSARK autophosphorylates on both serine/threonine and tyrosine residues and functions as a positive regulator of Arabidopsis leaf senescence; the senescence-suppressed protein phosphatase SSPP interacts with and dephosphorylates the cytoplasmic domain of AtSARK, thereby negatively regulating leaf senescence. Here, 27 autophosphorylation residues of AtSARK were revealed by mass spectrometry analysis, and six of them, including two Ser, two Thr, and two Tyr residues, were further found to be important for the biological functions of AtSARK. All site-directed mutations of these six residues that resulted in decreased autophosphorylation level of AtSARK could significantly inhibit AtSARK-induced leaf senescence. In addition, mutations mimicking the dephosphorylation form of Ser384 (S384A) or the phosphorylation form of Tyr413 (Y413E) substantially reduced the interaction between AtSARK and SSPP. All results suggest that autophosphorylation of AtSARK is essential for its functions in promoting leaf senescence. The possible roles of S384 and Y413 residues in fine-tuning the interaction between AtSARK and SSPP are discussed herein.
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10
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Yang C, Wang E, Liu J. CERK1, more than a co-receptor in plant-microbe interactions. THE NEW PHYTOLOGIST 2022; 234:1606-1613. [PMID: 35297054 DOI: 10.1111/nph.18074] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 02/25/2022] [Indexed: 06/14/2023]
Abstract
CERK1 (Chitin Elicitor Receptor Kinase 1), a lysin motif-containing pattern recognition receptor (PRR), perceives chitooligosaccharides (COs) to mount immune and symbiotic responses. However, CERK1, for a relatively long time, has been regarded as a co-receptor in plant immunity, mainly due to its lack of high binding affinity to known elicitors. Recent studies demonstrated several novel carbohydrates as ligands of CERK1 in different plant species and recognized CERK1 as a key receptor in plant immunity and symbiosis. This review summarizes recent knowledge acquired on the role of CERK1 in plant-microbe interactions.
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Affiliation(s)
- Chao Yang
- State Key Laboratory of Agrobiotechnology and MOA Key Laboratory for Monitoring and Green Management of Crop Pests, China Agricultural University, Beijing, 100193, China
| | - Ertao Wang
- National Key Laboratory of Plant Molecular Genetics, Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Jun Liu
- State Key Laboratory of Agrobiotechnology and MOA Key Laboratory for Monitoring and Green Management of Crop Pests, China Agricultural University, Beijing, 100193, China
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11
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Activation loop phosphorylaton of a non-RD receptor kinase initiates plant innate immune signaling. Proc Natl Acad Sci U S A 2021; 118:2108242118. [PMID: 34531323 PMCID: PMC8463890 DOI: 10.1073/pnas.2108242118] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/04/2021] [Indexed: 01/01/2023] Open
Abstract
Receptor kinases (RKs) are fundamental for extracellular sensing and regulate development and stress responses across kingdoms. In plants, leucine-rich repeat receptor kinases (LRR-RKs) are primarily peptide receptors that regulate responses to myriad internal and external stimuli. Phosphorylation of LRR-RK cytoplasmic domains is among the earliest responses following ligand perception, and reciprocal transphosphorylation between a receptor and its coreceptor is thought to activate the receptor complex. Originally proposed based on characterization of the brassinosteroid receptor, the prevalence of complex activation via reciprocal transphosphorylation across the plant RK family has not been tested. Using the LRR-RK ELONGATION FACTOR TU RECEPTOR (EFR) as a model, we set out to understand the steps critical for activating RK complexes. While the EFR cytoplasmic domain is an active protein kinase in vitro and is phosphorylated in a ligand-dependent manner in vivo, catalytically deficient EFR variants are functional in antibacterial immunity. These results reveal a noncatalytic role for EFR in triggering immune signaling and indicate that reciprocal transphoshorylation is not a ubiquitous requirement for LRR-RK complex activation. Rather, our analysis of EFR along with a detailed survey of the literature suggests a distinction between LRR-RKs with RD- versus non-RD protein kinase domains. Based on newly identified phosphorylation sites that regulate the activation state of the EFR complex in vivo, we propose that LRR-RK complexes containing a non-RD protein kinase may be regulated by phosphorylation-dependent conformational changes of the ligand-binding receptor, which could initiate signaling either allosterically or through driving the dissociation of negative regulators of the complex.
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DeFalco TA, Zipfel C. Molecular mechanisms of early plant pattern-triggered immune signaling. Mol Cell 2021; 81:3449-3467. [PMID: 34403694 DOI: 10.1016/j.molcel.2021.07.029] [Citation(s) in RCA: 123] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 07/21/2021] [Accepted: 07/23/2021] [Indexed: 10/20/2022]
Abstract
All eukaryotic organisms have evolved sophisticated immune systems to appropriately respond to biotic stresses. In plants and animals, a key part of this immune system is pattern recognition receptors (PRRs). Plant PRRs are cell-surface-localized receptor kinases (RKs) or receptor proteins (RPs) that sense microbe- or self-derived molecular patterns to regulate pattern-triggered immunity (PTI), a robust form of antimicrobial immunity. Remarkable progress has been made in understanding how PRRs perceive their ligands, form active protein complexes, initiate cell signaling, and ultimately coordinate the cellular reprogramming that leads to PTI. Here, we discuss the critical roles of PRR complex formation and phosphorylation in activating PTI signaling, as well as the emerging paradigm in which receptor-like cytoplasmic kinases (RLCKs) act as executors of signaling downstream of PRR activation.
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Affiliation(s)
- Thomas A DeFalco
- Institute of Plant and Microbial Biology, Zurich-Basel Plant Science Center, University of Zurich, Zurich, Switzerland
| | - Cyril Zipfel
- Institute of Plant and Microbial Biology, Zurich-Basel Plant Science Center, University of Zurich, Zurich, Switzerland; The Sainsbury Laboratory, University of East Anglia, Norwich Research Park, Norwich NR4 7UH, UK.
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13
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Suzuki M, Numazaki R, Nakagawa T, Shibuya N, Kaku H. Cytoplasmic interaction of LysM receptors contributes to the formation of symbiotic receptor complex. PLANT BIOTECHNOLOGY (TOKYO, JAPAN) 2020; 37:359-362. [PMID: 33088201 PMCID: PMC7557654 DOI: 10.5511/plantbiotechnology.20.0511a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Receptor complex formation at the cell surface is a key step to initiate downstream signaling but the contribution of this process for the regulation of the direction of downstream responses is not well understood. In the plant-microbe interactions, while CERK1, an Arabidopsis LysM-RLK, mediates chitin-induced immune responses, NFR1, a Lotus homolog of CERK1, regulates the symbiotic process with rhizobial bacteria through the recognition of Nod factors. Concerning the mechanistic insight of the regulation of such apparently opposite biological responses by the structurally related RLKs, Nakagawa et al. previously showed that the addition of YAQ sequence, conserved in NFR1 and other symbiotic LysM-RLKs, to the kinase domain of CERK1 switched downstream responses from defense to symbiosis using a set of chimeric receptors, NFR1-CERK1s. These results indicated that such a subtle difference in the cytoplasmic domain of LysM-RLKs could determine the direction of host responses from defense to symbiosis. On the other hand, it is still not understood how such structural differences in the cytoplasmic domains determine the direction of host responses. We here analyzed the interaction between chimeric NFR1s and NFR5, a partner receptor of NFR1, by co-immunoprecipitation (Co-IP) of these proteins transiently expressed in Nicotiana benthamiana. These results indicated that the cytoplasmic interaction between the LysM-RLKs is important for the symbiotic receptor complex formation and the YAQ containing region of NFR1 contributes to trigger symbiotic signaling through the successful formation of NFR1/NFR5 complex.
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Affiliation(s)
- Maruya Suzuki
- Department of Life Sciences, School of Agriculture, Meiji University, 1-1-1 Higashi-Mita, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan
| | - Ryota Numazaki
- Department of Life Sciences, School of Agriculture, Meiji University, 1-1-1 Higashi-Mita, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan
| | - Tomomi Nakagawa
- Division of Symbiotic Systems, National Institute for Basic Biology, 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan
| | - Naoto Shibuya
- Department of Life Sciences, School of Agriculture, Meiji University, 1-1-1 Higashi-Mita, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan
| | - Hanae Kaku
- Department of Life Sciences, School of Agriculture, Meiji University, 1-1-1 Higashi-Mita, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan
- E-mail: Tel: +81-44-934-7805 Fax: +81-44-934-7902
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14
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Stomatal immunity against fungal invasion comprises not only chitin-induced stomatal closure but also chitosan-induced guard cell death. Proc Natl Acad Sci U S A 2020; 117:20932-20942. [PMID: 32778594 PMCID: PMC7456093 DOI: 10.1073/pnas.1922319117] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Many pathogenic fungi exploit stomata as invasion routes, causing destructive diseases of major cereal crops. Intensive interaction is expected to occur between guard cells and fungi. In the present study, we took advantage of well-conserved molecules derived from the fungal cell wall, chitin oligosaccharide (CTOS), and chitosan oligosaccharide (CSOS) to study how guard cells respond to fungal invasion. In Arabidopsis, CTOS induced stomatal closure through a signaling mediated by its receptor CERK1, Ca2+, and a major S-type anion channel, SLAC1. CSOS, which is converted from CTOS by chitin deacetylases from invading fungi, did not induce stomatal closure, suggesting that this conversion is a fungal strategy to evade stomatal closure. At higher concentrations, CSOS but not CTOS induced guard cell death in a manner dependent on Ca2+ but not CERK1. These results suggest that stomatal immunity against fungal invasion comprises not only CTOS-induced stomatal closure but also CSOS-induced guard cell death.
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15
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Maruyama S, Shibuya N, Kaku H, Desaki Y. Arabidopsis cell culture for comparable physiological and genetic studies. PLANT SIGNALING & BEHAVIOR 2020; 15:1781384. [PMID: 32567456 PMCID: PMC8570761 DOI: 10.1080/15592324.2020.1781384] [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: 06/01/2020] [Accepted: 06/08/2020] [Indexed: 06/11/2023]
Abstract
Cell cultures established from various plant species have been used for a range of physiological and biochemical studies. Homogeneity of cell types and size of clusters in the cell culture often gave a clearer and simpler results compared to those obtained with the whole plant. On the other hand, possible variability of physiological conditions and responsiveness to external stimuli between the cell lines could be problematic for comparative studies. Aiming at combining the usefulness of plant cell culture with the rich information and genetic resources of Arabidopsis, we systemically examined the methods/conditions to establish cell lines for comparative studies, which could be applicable to a variety of genetic resources. Arabidopsis cell lines thus established from the meristem of mature seeds showed reproducible and comparable MAMP responses such as ROS generation and defense-related gene expression. MAMP responses of the cultured cells showed the specificity depending on the presence/absence of the corresponding MAMP receptor. Pharmacological study with a protein kinase inhibitor, K252a, also showed the usefulness of the cell culture for such studies. These results indicated the usefulness of the method to establish Arabidopsis cell lines, which are useful for comparative studies between genetic resources.
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Affiliation(s)
- Shingo Maruyama
- Department of Life Sciences, School of Agriculture, Meiji University, Kawasaki, Japan
| | - Naoto Shibuya
- Department of Life Sciences, School of Agriculture, Meiji University, Kawasaki, Japan
| | - Hanae Kaku
- Department of Life Sciences, School of Agriculture, Meiji University, Kawasaki, Japan
| | - Yoshitake Desaki
- Department of Life Sciences, School of Agriculture, Meiji University, Kawasaki, Japan
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Tokyo, Japan
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Gong BQ, Wang FZ, Li JF. Hide-and-Seek: Chitin-Triggered Plant Immunity and Fungal Counterstrategies. TRENDS IN PLANT SCIENCE 2020; 25:805-816. [PMID: 32673581 DOI: 10.1016/j.tplants.2020.03.006] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 03/01/2020] [Accepted: 03/10/2020] [Indexed: 05/05/2023]
Abstract
Fungal pathogens are major destructive microorganisms for land plants and pose growing challenges to global crop production. Chitin is a vital building block for fungal cell walls and also a broadly effective elicitor of plant immunity. Here we review the rapid progress in understanding chitin perception and signaling in plants and highlight similarities and differences of these processes between arabidopsis and rice. We also outline moonlight functions of CERK1, an indispensable chitin coreceptor conserved across the plant kingdom, which imply potential crosstalk between chitin signaling and symbiotic or biotic/abiotic stress signaling in plants via CERK1. Moreover, we summarize current knowledge about fungal counterstrategies for subverting chitin-triggered plant immunity and propose open questions and future directions in this field.
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Affiliation(s)
- Ben-Qiang Gong
- Guangdong Provincial Key Laboratory of Plant Resources, State Key Laboratory of Biocontrol, MOE Key Laboratory of Gene Function and Regulation, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Feng-Zhu Wang
- Guangdong Provincial Key Laboratory of Plant Resources, State Key Laboratory of Biocontrol, MOE Key Laboratory of Gene Function and Regulation, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Jian-Feng Li
- Guangdong Provincial Key Laboratory of Plant Resources, State Key Laboratory of Biocontrol, MOE Key Laboratory of Gene Function and Regulation, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China.
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Huang C, Yan Y, Zhao H, Ye Y, Cao Y. Arabidopsis CPK5 Phosphorylates the Chitin Receptor LYK5 to Regulate Plant Innate Immunity. FRONTIERS IN PLANT SCIENCE 2020; 11:702. [PMID: 32595659 PMCID: PMC7300259 DOI: 10.3389/fpls.2020.00702] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Accepted: 05/05/2020] [Indexed: 05/22/2023]
Abstract
Chitin, a major component of the fungal cell wall, triggers plant innate immunity in Arabidopsis via a receptor complex including two major lysin motif receptor-like kinases, AtLYK5, and AtCERK1. Although AtLYK5 has been proposed to be a major chitin-binding receptor, the pseudokinase domain of AtLYK5 is required to mediate chitin-triggered immune responses in plants. In this study, 48 AtLYK5-interacting proteins were identified using immunoprecipitation and mass spectrometry assay. Among them, Arabidopsis CALCIUM-DEPENDENT PROTEIN KINASE 5 (AtCPK5) is a protein kinase interacting with both AtLYK5 and AtCERK1. Chitin-induced immune responses are inhibited in both Arabidopsis atcpk5 and atcpk5/6 mutant plants. AtLYK5 and AtLYK4 but not AtCERK1 are phosphorylated by AtCPK5 and AtCPK6 in vitro. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis and in vitro kinase assay identified that Ser-323 and Ser-542 of AtLYK5 are important phosphorylation residues by AtCPK5. Transgenic Arabidopsis expressing either AtLYK5-S323A or AtLYK5-S542A in the atlyk5-2 mutant only partially rescue the defects in chitin-triggered MPK3/MPK6 phosphorylation. Overexpression of AtCPK5 could increase AtCERK1 protein level after chitin treatment. These data proposed a model in which AtCPK5 directly phosphorylates AtLYK5 and regulates chitin-induced defense responses in Arabidopsis.
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Affiliation(s)
| | | | | | | | - Yangrong Cao
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
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18
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Zhou Z, Zhao Y, Bi G, Liang X, Zhou JM. Early signalling mechanisms underlying receptor kinase-mediated immunity in plants. Philos Trans R Soc Lond B Biol Sci 2020; 374:20180310. [PMID: 30967025 DOI: 10.1098/rstb.2018.0310] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Pattern-recognition receptors (PRRs), which are single transmembrane proteins belonging to the receptor-like kinase (RLK) and receptor-like protein (RLP) super families, sense microbe- and host-derived molecular patterns to activate immune responses in plants. PRRs associate with co-receptors, scaffold proteins and receptor-like cytoplasmic kinases (RLCKs) to form immune receptor complexes at the cell surface, allowing activation of cellular responses upon perception of extracellular ligands. Recent advances have uncovered new mechanisms by which these immune receptor complexes are regulated at the levels of composition, stability and activity. It has become clear that RLCKs are central components directly linking PRRs to multiple downstream signalling modules. Furthermore, new studies have provided important insights into the regulation of reactive oxygen species, mitogen-activated protein (MAP) kinase cascades and heterotrimeric G proteins, which has not only deepened our understanding of immunity, but also expanded our view of transmembrane signalling in general. This article is part of the theme issue 'Biotic signalling sheds light on smart pest management'.
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Affiliation(s)
- Zhaoyang Zhou
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences , No. 1 West Beichen Road, Chaoyang District, Beijing 100101 , People's Republic of China
| | - Yan Zhao
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences , No. 1 West Beichen Road, Chaoyang District, Beijing 100101 , People's Republic of China
| | - Guozhi Bi
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences , No. 1 West Beichen Road, Chaoyang District, Beijing 100101 , People's Republic of China
| | - Xiangxiu Liang
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences , No. 1 West Beichen Road, Chaoyang District, Beijing 100101 , People's Republic of China
| | - Jian-Min Zhou
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences , No. 1 West Beichen Road, Chaoyang District, Beijing 100101 , People's Republic of China
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19
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Wang K, Zheng X, Zhang X, Zhao L, Yang Q, Boateng NAS, Ahima J, Liu J, Zhang H. Comparative Transcriptomic Analysis of the Interaction between Penicillium expansum and Apple Fruit ( Malus pumila Mill.) during Early Stages of Infection. Microorganisms 2019; 7:microorganisms7110495. [PMID: 31661784 PMCID: PMC6920851 DOI: 10.3390/microorganisms7110495] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 10/20/2019] [Accepted: 10/21/2019] [Indexed: 01/26/2023] Open
Abstract
Blue mold, caused by Penicillium expansum, is an important postharvest disease of apple, and can result in significant economic losses. The present study investigated the interaction between P. expansum and wounded apple fruit tissues during the early stages of the infection. Spores of P. expansum became activated one hour post-inoculation (hpi), exhibited swelling at 3 hpi, and the germ tubes were found entering into apple tissues at 6 hpi. RNA-seq was performed on samples of P. expansum and apple fruit tissue collected at 1, 3, and 6 hpi. The main differentially expressed genes (DEGs) that were identified in P. expansum were related to interaction, cell wall degradation enzymes, anti-oxidative stress, pH regulation, and effectors. Apple tissues responded to the presence of P. expansum by activating pathogen-associated molecular pattern (PAMP)-triggered immunity (PTI) at 1 hpi, then activated effector-triggered immunity (ETI) at 3 hpi. This research provides new information on the interaction between P. expansum and apple fruit tissue at an early stage of the infection process.
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Affiliation(s)
- Kaili Wang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Xiangfeng Zheng
- School of Food Science and Engineering, Yangzhou University, Yangzhou 225009, China.
| | - Xiaoyun Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Lina Zhao
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Qiya Yang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
| | | | - Joseph Ahima
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Jia Liu
- Chongqing Key Laboratory of Economic Plant Biotechnology, College of Landscape Architecture and Life Science/Institute of Special Plants, Chongqing University of Arts and Sciences, Yongchuan, Chongqing 402160, China.
| | - Hongyin Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
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Liu Y, Maierhofer T, Rybak K, Sklenar J, Breakspear A, Johnston MG, Fliegmann J, Huang S, Roelfsema MRG, Felix G, Faulkner C, Menke FL, Geiger D, Hedrich R, Robatzek S. Anion channel SLAH3 is a regulatory target of chitin receptor-associated kinase PBL27 in microbial stomatal closure. eLife 2019; 8:44474. [PMID: 31524595 PMCID: PMC6776436 DOI: 10.7554/elife.44474] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 09/13/2019] [Indexed: 12/15/2022] Open
Abstract
In plants, antimicrobial immune responses involve the cellular release of anions and are responsible for the closure of stomatal pores. Detection of microbe-associated molecular patterns (MAMPs) by pattern recognition receptors (PRRs) induces currents mediated via slow-type (S-type) anion channels by a yet not understood mechanism. Here, we show that stomatal closure to fungal chitin is conferred by the major PRRs for chitin recognition, LYK5 and CERK1, the receptor-like cytoplasmic kinase PBL27, and the SLAH3 anion channel. PBL27 has the capacity to phosphorylate SLAH3, of which S127 and S189 are required to activate SLAH3. Full activation of the channel entails CERK1, depending on PBL27. Importantly, both S127 and S189 residues of SLAH3 are required for chitin-induced stomatal closure and anti-fungal immunity at the whole leaf level. Our results demonstrate a short signal transduction module from MAMP recognition to anion channel activation, and independent of ABA-induced SLAH3 activation.
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Affiliation(s)
- Yi Liu
- The Sainsbury Laboratory, Norwich, United Kingdom
| | - Tobias Maierhofer
- Institute for Molecular Plant Physiology and Biophysics, Julius-von-Sachs-Institute, Biocenter, University of Wuerzburg, Wuerzburg, Germany
| | - Katarzyna Rybak
- LMU Biocenter, Ludwig-Maximilian-University of Munich, Martinsried, Germany
| | - Jan Sklenar
- The Sainsbury Laboratory, Norwich, United Kingdom
| | | | | | - Judith Fliegmann
- Department of Plant Biochemistry, Center for Plant Molecular Biology (ZMBP), University of Tuebingen, Tuebingen, Germany
| | - Shouguang Huang
- Institute for Molecular Plant Physiology and Biophysics, Julius-von-Sachs-Institute, Biocenter, University of Wuerzburg, Wuerzburg, Germany
| | - M Rob G Roelfsema
- Institute for Molecular Plant Physiology and Biophysics, Julius-von-Sachs-Institute, Biocenter, University of Wuerzburg, Wuerzburg, Germany
| | - Georg Felix
- Department of Plant Biochemistry, Center for Plant Molecular Biology (ZMBP), University of Tuebingen, Tuebingen, Germany
| | | | | | - Dietmar Geiger
- Institute for Molecular Plant Physiology and Biophysics, Julius-von-Sachs-Institute, Biocenter, University of Wuerzburg, Wuerzburg, Germany
| | - Rainer Hedrich
- Institute for Molecular Plant Physiology and Biophysics, Julius-von-Sachs-Institute, Biocenter, University of Wuerzburg, Wuerzburg, Germany
| | - Silke Robatzek
- The Sainsbury Laboratory, Norwich, United Kingdom.,LMU Biocenter, Ludwig-Maximilian-University of Munich, Martinsried, Germany
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Suzuki M, Yoshida I, Suto K, Desaki Y, Shibuya N, Kaku H. AtCERK1 Phosphorylation Site S493 Contributes to the Transphosphorylation of Downstream Components for Chitin-Induced Immune Signaling. PLANT & CELL PHYSIOLOGY 2019; 60:1804-1810. [PMID: 31119298 DOI: 10.1093/pcp/pcz096] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 05/11/2019] [Indexed: 06/09/2023]
Abstract
While ligand-induced autophosphorylation of receptor-like kinases (RLKs) is known to be critical for triggering the downstream responses, biochemical mechanism by which each phosphorylation site contributes to the initiation of corresponding signaling cascades is only poorly understood, except the involvement of some phosphorylation sites in the regulation of catalytic activity of these RLKs. In this article, we first confirmed that the phosphorylation of S493 of AtCERK1 is involved in the regulation of chitin-induced defense responses by the complementation of an atcerk1 mutant with AtCERK1(S493A) cDNA. In vitro kinase assay with the heterologously expressed kinase domain of AtCERK1, GST-AtCERK1cyt, showed that the S493A mutation did not affect the autophosphorylation of AtCERK1 itself but diminished the transphosphorylation of downstream signaling components, PBL27 and PUB4. On the other hand, a phosphomimetic mutant, GST-AtCERK1(S493D)cyt, transphosphorylated these substrates as similar to the wild type AtCERK1. These results suggested that the phosphorylation of S493 does not contribute to the regulation of catalytic activity but plays an important role for the transphosphorylation of the downstream signaling components, thus contributing to the initiation of chitin signaling. To our knowledge, it is a novel finding that a specific phosphorylation site contributes to the regulation of transphosphorylation activity of RLKs. Further studies on the structural basis by which S493 phosphorylation contributes to the regulation of transphosphorylation would contribute to the understanding how the ligand-induced autophosphorylation of RLKs properly regulates the downstream signaling.
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Affiliation(s)
- Maruya Suzuki
- Department of Life Sciences, School of Agriculture, Meiji University, 1-1-1 Higashi-Mita, Tama-ku, Kawasaki, Japan
| | - Issei Yoshida
- Department of Life Sciences, School of Agriculture, Meiji University, 1-1-1 Higashi-Mita, Tama-ku, Kawasaki, Japan
| | - Kenkichi Suto
- Department of Life Sciences, School of Agriculture, Meiji University, 1-1-1 Higashi-Mita, Tama-ku, Kawasaki, Japan
| | - Yoshitake Desaki
- Department of Life Sciences, School of Agriculture, Meiji University, 1-1-1 Higashi-Mita, Tama-ku, Kawasaki, Japan
| | - Naoto Shibuya
- Department of Life Sciences, School of Agriculture, Meiji University, 1-1-1 Higashi-Mita, Tama-ku, Kawasaki, Japan
| | - Hanae Kaku
- Department of Life Sciences, School of Agriculture, Meiji University, 1-1-1 Higashi-Mita, Tama-ku, Kawasaki, Japan
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Bhattacharya A, Paul A, Chakrabarti D, DasGupta M. Gatekeeper-Activation Loop Cross-Talk Determines Distinct Autoactivation States of Symbiosis Receptor Kinase. Biochemistry 2019; 58:2419-2431. [PMID: 31021099 DOI: 10.1021/acs.biochem.9b00071] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Plant receptor-like kinases (RLKs) have a Tyr in the "gatekeeper" position adjacent to the hinge region. The gatekeeper is phosphorylated in several RLKs, including symbiosis receptor kinase (SYMRK), but the significance of this remains unknown. Gatekeeper substitution did not inactivate Arachis hypogaea SYMRK but affected autophosphorylation at selected sites. Herein, we show that nonphosphorylatable gatekeepers (Y670F and Y670A) restrict SYMRK to be a Ser/Thr kinase with a basal level of phosphorylation (∼5 P/polypeptide, termed state I) whereas phosphorylatable gatekeepers (Y670 and Y670T) allowed SYMRK to be dual specific (Ser/Thr/Tyr) with a maximal level of phosphorylation (∼10 P/polypeptide, termed state II). State II SYMRKs were phosphorylated on gatekeeper residues, and the phosphocode in their activation segment was distinct from state I. The kcat/ Km for substrate phosphorylation was ∼10-fold higher for state II, though for autophosphorylation, it was comparable with those of state I SYMRKs. To identify other determinants of state I features, we mutagenized all nine sites where phosphorylation was affected by nonphosphorylatable gatekeepers (Y670F and Y670A). Only two such mutants, S754A and S757A, located on the activation loop failed to phosphorylate gatekeeper Tyr and restricted SYMRK in state I. Double mutants like Y670F/S754A retained the features of state I, but Y670F/S757A was significantly inactivated, indicating a nonphosphorylatable gatekeeper can bypass phosphorylation of S754 but not S757 in the activation segment. We propose a working model for the hierarchical phosphorylation of SYMRK on gatekeeper and activation segments for its pS757-mediated activation as a Ser/Thr kinase in selfie mode (autophosphorylation) to a pS754/pY670-mediated activation as a Ser/Thr/Tyr kinase that functions in dual mode (both autophosphorylation and substrate phosphorylation).
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Affiliation(s)
- Avisek Bhattacharya
- Department of Biochemistry , University of Calcutta , Kolkata 700019 , India
| | - Anindita Paul
- Department of Biochemistry , University of Calcutta , Kolkata 700019 , India
| | | | - Maitrayee DasGupta
- Department of Biochemistry , University of Calcutta , Kolkata 700019 , India
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23
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Caddell DF, Wei T, Sharma S, Oh MH, Park CJ, Canlas P, Huber SC, Ronald PC. Four tyrosine residues of the rice immune receptor XA21 are not required for interaction with the co-receptor OsSERK2 or resistance to Xanthomonas oryzae pv. oryzae. PeerJ 2018; 6:e6074. [PMID: 30581670 PMCID: PMC6294051 DOI: 10.7717/peerj.6074] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 11/02/2018] [Indexed: 11/23/2022] Open
Abstract
Tyrosine phosphorylation has emerged as an important regulator of plasma membrane-localized immune receptors activity. Here, we investigate the role of tyrosine phosphorylation in the regulation of rice XANTHOMONAS RESISTANCE 21 (XA21)-mediated immunity. We demonstrate that the juxtamembrane and kinase domain of Escherichia coli–expressed XA21 (XA21JK) autophosphorylates on tyrosine residues. Directed mutagenesis of four out of the nine tyrosine residues in XA21JK reduced autophosphorylation. These sites include Tyr698 in the juxtamembrane domain, and Tyr786, Tyr907, and Tyr909 in the kinase domain. Rice plants expressing XA21-GFP fusion proteins or proteins with these tyrosine residues individually mutated to phenylalanine (XA21YF-GFP), which prevents phosphorylation at these sites, maintain resistance to Xanthomonas oryzae pv. oryzae. In contrast, plants expressing phosphomimetic XA21 variants with tyrosine mutated to aspartate (XA21YD-GFP) were susceptible. In vitro purified XA21JKY698F, XA21JKY907F, and XA21JKY909F variants are catalytically active, whereas activity was not detected in XA21JKY768F and the four XA21JKYD variants. We previously demonstrated that interaction of XA21 with the co-receptor OsSERK2 is critical for biological function. Four of the XA21JKYF variants maintain interaction with OsSERK2 as well as the XA21 binding (XB) proteins XB3 and XB15 in yeast, suggesting that these four tyrosine residues are not required for their interaction. Taken together, these results suggest that XA21 is capable of tyrosine autophosphorylation, but the identified tyrosine residues are not required for activation of XA21-mediated immunity or interaction with predicted XA21 signaling proteins.
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Affiliation(s)
- Daniel F Caddell
- Department of Plant Biology and the Genome Center, University of California, Davis, CA, USA
| | - Tong Wei
- Department of Plant Biology and the Genome Center, University of California, Davis, CA, USA
| | - Sweta Sharma
- Department of Plant Biology and the Genome Center, University of California, Davis, CA, USA
| | - Man-Ho Oh
- Department of Plant Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Chang-Jin Park
- Department of Plant Biology and the Genome Center, University of California, Davis, CA, USA
| | - Patrick Canlas
- Department of Plant Biology and the Genome Center, University of California, Davis, CA, USA
| | - Steven C Huber
- Department of Plant Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA.,Agricultural Research Service, United States Department of Agriculture, Urbana, IL, USA
| | - Pamela C Ronald
- Department of Plant Biology and the Genome Center, University of California, Davis, CA, USA
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24
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Perraki A, DeFalco TA, Derbyshire P, Avila J, Séré D, Sklenar J, Qi X, Stransfeld L, Schwessinger B, Kadota Y, Macho AP, Jiang S, Couto D, Torii KU, Menke FLH, Zipfel C. Phosphocode-dependent functional dichotomy of a common co-receptor in plant signalling. Nature 2018; 561:248-252. [PMID: 30177827 PMCID: PMC6250601 DOI: 10.1038/s41586-018-0471-x] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 07/17/2018] [Indexed: 11/09/2022]
Abstract
Multicellular organisms employ cell-surface receptor kinases (RKs) to sense and process extracellular signals. Many plant RKs form ligand-induced complexes with shape-complementary co-receptors for their activation1. The best-characterized co-receptor is BRASSINOSTEROID INSENSITIVE 1-ASSOCIATED KINASE 1 (BAK1), which associates with numerous leucine-rich repeat (LRR)-RKs to control immunity, growth, and development2. Here, we report key regulatory events controlling the functionality of BAK1 and, more generally, LRR-RKs. Through a combination of phospho-proteomics and targeted mutagenesis, we identified conserved phosphosites that are required for BAK1 immune function in Arabidopsis thaliana (hereafter Arabidopsis). Strikingly, these phosphosites are not required for BAK1-dependent brassinosteroid (BR)-regulated growth. In addition to revealing a critical role for BAK1 C-terminal tail phosphorylation, we identified a conserved tyrosine phosphosite that may be required for functionality of the majority of Arabidopsis LRR-RKs, and separates them into two distinct functional classes. Our results suggest a phosphocode-based dichotomy of BAK1 functionality in plant signaling, and provide novel insights into receptor kinase activation, which have broad implications for our understanding of how plants respond to their changing environment.
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Affiliation(s)
- Artemis Perraki
- The Sainsbury Laboratory, Norwich Research Park, Norwich, UK.,Department of Plant Sciences, University of Cambridge, Cambridge, UK
| | - Thomas A DeFalco
- The Sainsbury Laboratory, Norwich Research Park, Norwich, UK.,Institute of Plant and Microbial Biology and Zürich-Basel Plant Science Center, University of Zürich, Zürich, Switzerland
| | - Paul Derbyshire
- The Sainsbury Laboratory, Norwich Research Park, Norwich, UK
| | - Julian Avila
- Howard Hughes Medical Institute, University of Washington, Seattle, WA, USA.,Department of Biology, University of Washington, Seattle, WA, USA.,Metabolomics Platform, The Broad Institute, Cambridge, MA, USA
| | - David Séré
- The Sainsbury Laboratory, Norwich Research Park, Norwich, UK.,Laboratoire de Biochimie et Physiologie Moléculaire des Plantes, Institut de Biologie Intégrative des Plantes 'Claude Grignon', UMR CNRS/INRA/SupAgro/UM2, Montpellier, France
| | - Jan Sklenar
- The Sainsbury Laboratory, Norwich Research Park, Norwich, UK
| | - Xingyun Qi
- Howard Hughes Medical Institute, University of Washington, Seattle, WA, USA.,Department of Biology, University of Washington, Seattle, WA, USA
| | - Lena Stransfeld
- The Sainsbury Laboratory, Norwich Research Park, Norwich, UK.,Institute of Plant and Microbial Biology and Zürich-Basel Plant Science Center, University of Zürich, Zürich, Switzerland
| | - Benjamin Schwessinger
- The Sainsbury Laboratory, Norwich Research Park, Norwich, UK.,The Australian National University, Research School of Biology, Acton, Australian Capital Territory, Australia
| | - Yasuhiro Kadota
- The Sainsbury Laboratory, Norwich Research Park, Norwich, UK.,RIKEN Center for Sustainable Resource Science, Yokohama, Japan
| | - Alberto P Macho
- The Sainsbury Laboratory, Norwich Research Park, Norwich, UK.,Shanghai Center for Plant Stress Biology, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Shushu Jiang
- The Sainsbury Laboratory, Norwich Research Park, Norwich, UK.,Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Daniel Couto
- The Sainsbury Laboratory, Norwich Research Park, Norwich, UK.,Department of Botany and Plant Biology, University of Geneva, Geneva, Switzerland
| | - Keiko U Torii
- Howard Hughes Medical Institute, University of Washington, Seattle, WA, USA.,Department of Biology, University of Washington, Seattle, WA, USA
| | - Frank L H Menke
- The Sainsbury Laboratory, Norwich Research Park, Norwich, UK
| | - Cyril Zipfel
- The Sainsbury Laboratory, Norwich Research Park, Norwich, UK. .,Institute of Plant and Microbial Biology and Zürich-Basel Plant Science Center, University of Zürich, Zürich, Switzerland.
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25
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Konrad KR, Maierhofer T, Hedrich R. Spatio-temporal Aspects of Ca2+ Signalling: Lessons from Guard Cells and Pollen Tubes. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:4986225. [PMID: 29701811 DOI: 10.1093/jxb/ery154] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Indexed: 05/06/2023]
Abstract
Changes in cytosolic Ca2+ concentration ([Ca2+]cyt) serve to transmit information in eukaryotic cells. The involvement of this second messenger in plant cell growth as well as osmotic- and water relations is well established. After almost 40 years of intense research on the coding and decoding of plant Ca2+ signals, numerous proteins involved in Ca2+ action have been identified. However, we are still far from understanding the complexity of Ca2+ networks. New in vivo Ca2+ imaging techniques combined with molecular genetics allow visualisation of spatio-temporal aspects of Ca2+ signalling. In parallel, cell biology together with protein biochemistry and electrophysiology are able to dissect information processing by this second messenger in space and time. Here we focus on the time-resolved changes in cellular events upon Ca2+ signals, concentrating on the two best-studied cell types, pollen tubes and guard cells. We put their signalling networks side by side, compare them with those of other cell types and discuss rapid signalling in the context of Ca2+ transients and oscillations to regulate ion homeostasis.
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Affiliation(s)
- K R Konrad
- University of Wuerzburg, Julius-Von-Sachs Institute for Biosciences, Department of Botany I, Wuerzburg, Germany
| | - T Maierhofer
- University of Wuerzburg, Julius-Von-Sachs Institute for Biosciences, Department of Botany I, Wuerzburg, Germany
| | - R Hedrich
- University of Wuerzburg, Julius-Von-Sachs Institute for Biosciences, Department of Botany I, Wuerzburg, Germany
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26
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Desaki Y, Kouzai Y, Ninomiya Y, Iwase R, Shimizu Y, Seko K, Molinaro A, Minami E, Shibuya N, Kaku H, Nishizawa Y. OsCERK1 plays a crucial role in the lipopolysaccharide-induced immune response of rice. THE NEW PHYTOLOGIST 2018; 217:1042-1049. [PMID: 29194635 DOI: 10.1111/nph.14941] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 11/09/2017] [Indexed: 05/20/2023]
Abstract
Plant cell surface receptor-like kinases (RLKs) mediate the signals from microbe-associated molecular patterns (MAMPs) that induce immune responses. Lipopolysaccharide (LPS), the major constituent of the outer membrane of gram-negative bacteria, is a common MAMP perceived by animals and plants; however, the plant receptors/co-receptors are unknown except for LORE, a bulb-type lectin S-domain RLK (B-lectin SD1-RLK) in Arabidopsis. OsCERK1 is a multifunctional RLK in rice that contains lysin motifs (LysMs) and is essential for the perception of chitin, a fungal MAMP, and peptidoglycan, a bacterial MAMP. Here, we analyzed the relevance of OsCERK1 to LPS perception in rice. Using OsCERK1-knockout mutants (oscerk1), we evaluated hydrogen peroxide (H2 O2 ) production and gene expression after LPS treatment. We also examined the LPS response in knockout mutants for the B-lectin SD1-RLK genes in rice and for all LysM-protein genes in Arabidopsis. Compared with wild-type rice cells, LPS responses in oscerk1 cells were mostly diminished. By contrast, rice lines mutated in either of three B-lectin SD1-RLK genes and Arabidopsis lines mutated in the LysM-protein genes responded normally to LPS. From these results, we conclude that OsCERK1 is an LPS receptor/co-receptor and that the LPS perception systems of rice and Arabidopsis are significantly different.
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Affiliation(s)
- Yoshitake Desaki
- Department of Life Sciences, School of Agriculture, Meiji University, Tama-ku, Kawasaki, Kanagawa, 214-8571, Japan
| | - Yusuke Kouzai
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Kannondai 2-1-2, Tsukuba, Ibaraki, 305-8602, Japan
| | - Yusuke Ninomiya
- Department of Life Sciences, School of Agriculture, Meiji University, Tama-ku, Kawasaki, Kanagawa, 214-8571, Japan
| | - Ryosuke Iwase
- Department of Life Sciences, School of Agriculture, Meiji University, Tama-ku, Kawasaki, Kanagawa, 214-8571, Japan
| | - Yumi Shimizu
- Department of Life Sciences, School of Agriculture, Meiji University, Tama-ku, Kawasaki, Kanagawa, 214-8571, Japan
| | - Keito Seko
- Department of Life Sciences, School of Agriculture, Meiji University, Tama-ku, Kawasaki, Kanagawa, 214-8571, Japan
| | - Antonio Molinaro
- Department of Chemical Sciences, University of Naples Federico II, Via Cinthia 4, 80126, Naples, Italy
| | - Eiichi Minami
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Kannondai 2-1-2, Tsukuba, Ibaraki, 305-8602, Japan
| | - Naoto Shibuya
- Department of Life Sciences, School of Agriculture, Meiji University, Tama-ku, Kawasaki, Kanagawa, 214-8571, Japan
| | - Hanae Kaku
- Department of Life Sciences, School of Agriculture, Meiji University, Tama-ku, Kawasaki, Kanagawa, 214-8571, Japan
| | - Yoko Nishizawa
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Kannondai 2-1-2, Tsukuba, Ibaraki, 305-8602, Japan
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27
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Suzuki M, Watanabe T, Yoshida I, Kaku H, Shibuya N. Autophosphorylation site Y428 is essential for the in vivo activation of CERK1. PLANT SIGNALING & BEHAVIOR 2018; 13:e1435228. [PMID: 29388878 PMCID: PMC5846561 DOI: 10.1080/15592324.2018.1435228] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 01/10/2018] [Accepted: 01/12/2018] [Indexed: 05/06/2023]
Abstract
Autophosphorylation of PRR is a critical event for the activation of immune signaling in plant. However, the detailed function of these phosphorylation sites is still not well understood. We analyzed the function of an autophosphorylation site of Arabidopsis CERK1, Y428, in immune signaling. Biochemical characterization of CERK1 mutants transiently expressed in N. benthamiana indicated that Y428 plays a crucial role for the in vivo activation of CERK1, differently from the previous observation by the in vitro kinase assay with its cytoplasmic domain. Similar discrepancy between in vitro and in vivo kinase assay was also reported for the corresponding phosphorylation site of EFR, suggesting that these conserved tyrosine residues play important roles for the activation of both RD and non-RD RLKs.
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Affiliation(s)
- Maruya Suzuki
- Department of Life Sciences, School of Agriculture, Meiji University, 1-1-1 Higashi-Mita, Tama-ku, Kawasaki, Kanagawa, Japan
| | - Takumi Watanabe
- Department of Life Sciences, School of Agriculture, Meiji University, 1-1-1 Higashi-Mita, Tama-ku, Kawasaki, Kanagawa, Japan
| | - Issei Yoshida
- Department of Life Sciences, School of Agriculture, Meiji University, 1-1-1 Higashi-Mita, Tama-ku, Kawasaki, Kanagawa, Japan
| | - Hanae Kaku
- Department of Life Sciences, School of Agriculture, Meiji University, 1-1-1 Higashi-Mita, Tama-ku, Kawasaki, Kanagawa, Japan
| | - Naoto Shibuya
- Department of Life Sciences, School of Agriculture, Meiji University, 1-1-1 Higashi-Mita, Tama-ku, Kawasaki, Kanagawa, Japan
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28
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Liu J, Liu B, Chen S, Gong BQ, Chen L, Zhou Q, Xiong F, Wang M, Feng D, Li JF, Wang HB, Wang J. A Tyrosine Phosphorylation Cycle Regulates Fungal Activation of a Plant Receptor Ser/Thr Kinase. Cell Host Microbe 2018; 23:241-253.e6. [DOI: 10.1016/j.chom.2017.12.005] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 08/22/2017] [Accepted: 12/12/2017] [Indexed: 11/24/2022]
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29
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Yamaguchi K, Mezaki H, Fujiwara M, Hara Y, Kawasaki T. Arabidopsis ubiquitin ligase PUB12 interacts with and negatively regulates Chitin Elicitor Receptor Kinase 1 (CERK1). PLoS One 2017; 12:e0188886. [PMID: 29182677 PMCID: PMC5705137 DOI: 10.1371/journal.pone.0188886] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 11/14/2017] [Indexed: 12/16/2022] Open
Abstract
In Arabidopsis, fungal chitin is recognized as a pathogen-associated molecular pattern (PAMP) by the chitin receptor complex containing the lysin-motif (LysM) receptor-like kinases CERK1 and LYK5. Upon the perception of chitin, CERK1 phosphorylates the receptor-like cytoplasmic kinase, PBL27, which activates the intracellular mitogen-activated protein kinase (MAPK) cascade. However, the mechanisms by which the CERK1-PBL27 complex is regulated remain largely unknown. We identified ubiquitin ligase PUB12 as a component of the PBL27 complex using co-immunoprecipitation and mass spectrometry. However, PUB12 did not interact directly with PBL27. Instead, the ARM domains of PUB12 and its paralog PUB13 interacted with the intracellular domain of CERK1 in a manner that was dependent on its autophosphorylation, suggesting that the phosphorylation-based auto-activation of CERK1 may be required for its interaction with PUB12. The co-expression of PUB12 in Nicotiana benthamiana reduced the accumulation of CERK1. The pub12 pub13 mutant exhibited enhanced chitin-induced immune responses such as ROS production, MAPK activation, and callose deposition. These results suggest that PUB12 and PUB13 are involved in the negative regulation of the chitin receptor complex, which may contribute to the transient desensitization of chitin-induced responses.
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Affiliation(s)
- Koji Yamaguchi
- Department of Advanced Bioscience, Graduate School of Agriculture, Kindai University, Nakamachi, Nara, Japan
| | - Hirohisa Mezaki
- Department of Advanced Bioscience, Graduate School of Agriculture, Kindai University, Nakamachi, Nara, Japan
| | - Masayuki Fujiwara
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, Japan
| | - Yuki Hara
- Department of Advanced Bioscience, Graduate School of Agriculture, Kindai University, Nakamachi, Nara, Japan
| | - Tsutomu Kawasaki
- Department of Advanced Bioscience, Graduate School of Agriculture, Kindai University, Nakamachi, Nara, Japan
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30
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Desaki Y, Miyata K, Suzuki M, Shibuya N, Kaku H. Plant immunity and symbiosis signaling mediated by LysM receptors. Innate Immun 2017; 24:92-100. [PMID: 29105533 DOI: 10.1177/1753425917738885] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Plants possess the ability to recognize microbe-associated molecular patterns (MAMPs) and PAMPs through the PRRs, and initiate pattern-triggered immunity. MAMPs are derived from cell-envelope components, secreted materials and cytosolic proteins from bacteria, oomycetes or fungi, and some MAMPs play a similar function in the innate immunity in mammals. Chitin is a representative fungal MAMP and triggers defense signaling in a wide range of plant species. The chitin receptors CEBiP and CERK1 on the plasma membrane have LysM (lysin motif) in their ectodomains. These molecules play an important role for the defense responses in rice and Arabidopsis, strictly recognizing the size and acetylated form of chitin oligosaccharides. However, related LysM receptors also play major roles for the signaling in root nodule and arbuscular mycorrhizal symbiosis. This review summarizes current knowledge on the molecular mechanisms of the defense and symbiosis signaling mediated by LysM receptors, including the activation steps of chitin-induced defense signaling downstream of LysM receptors.
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Affiliation(s)
- Yoshitake Desaki
- Guest Editors: Mari-Anne Newman (Copenhagen, Denmark) and Antonio Molinaro (Naples, Italy) 1Department of Life Sciences, School of Agriculture, Meiji University, Kawasaki, Japan
| | - Kana Miyata
- Guest Editors: Mari-Anne Newman (Copenhagen, Denmark) and Antonio Molinaro (Naples, Italy) 1Department of Life Sciences, School of Agriculture, Meiji University, Kawasaki, Japan.,2 Department of Plant Science, Laboratory of Molecular Biology, Wageningen University, Wageningen, The Netherlands
| | - Maruya Suzuki
- Guest Editors: Mari-Anne Newman (Copenhagen, Denmark) and Antonio Molinaro (Naples, Italy) 1Department of Life Sciences, School of Agriculture, Meiji University, Kawasaki, Japan
| | - Naoto Shibuya
- Guest Editors: Mari-Anne Newman (Copenhagen, Denmark) and Antonio Molinaro (Naples, Italy) 1Department of Life Sciences, School of Agriculture, Meiji University, Kawasaki, Japan
| | - Hanae Kaku
- Guest Editors: Mari-Anne Newman (Copenhagen, Denmark) and Antonio Molinaro (Naples, Italy) 1Department of Life Sciences, School of Agriculture, Meiji University, Kawasaki, Japan
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31
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Singh V, Perraki A, Kim SY, Shrivastava S, Lee JH, Zhao Y, Schwessinger B, Oh MH, Marshall-Colon A, Zipfel C, Huber SC. Tyrosine-610 in the Receptor Kinase BAK1 Does Not Play a Major Role in Brassinosteroid Signaling or Innate Immunity. FRONTIERS IN PLANT SCIENCE 2017; 8:1273. [PMID: 28824659 PMCID: PMC5539094 DOI: 10.3389/fpls.2017.01273] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 07/06/2017] [Indexed: 05/29/2023]
Abstract
The plasma membrane-localized BRI1-ASSOCIATED KINASE1 (BAK1) functions as a co-receptor with several receptor kinases including the brassinosteroid (BR) receptor BRASSINOSTEROID-INSENSITIVE 1 (BRI1), which is involved in growth, and the receptors for bacterial flagellin and EF-Tu, FLAGELLIN-SENSING 2 (FLS2) and EF-TU RECEPTOR (EFR), respectively, which are involved in immunity. BAK1 is a dual specificity protein kinase that can autophosphorylate on serine, threonine and tyrosine residues. It was previously reported that phosphorylation of Tyr-610 in the carboxy-terminal domain of BAK1 is required for its function in BR signaling and immunity. However, the functional role of Tyr-610 in vivo has recently come under scrutiny. Therefore, we have generated new BAK1 (Y610F) transgenic plants for functional studies. We first produced transgenic Arabidopsis lines expressing BAK1 (Y610F)-Flag in the homozygous bak1-4 bkk1-1 double null background. In a complementary approach, we expressed untagged BAK1 and BAK1 (Y610F) in the bak1-4 null mutant. Neither BAK1 (Y610F) transgenic line had any obvious growth phenotype when compared to wild-type BAK1 expressed in the same background. In addition, the BAK1 (Y610F)-Flag plants responded similarly to plants expressing BAK1-Flag in terms of brassinolide (BL) inhibition of root elongation, and there were only minor changes in gene expression between the two transgenic lines as monitored by microarray analysis and quantitative real-time PCR. In terms of plant immunity, there were no significant differences between plants expressing BAK1 (Y610F)-Flag and BAK1-Flag in the growth of the non-pathogenic hrpA- mutant of Pseudomonas syringae pv. tomato DC3000. Furthermore, untagged BAK1 (Y610F) transgenic plants were as responsive as plants expressing BAK1 (in the bak1-4 background) and wild-type Col-0 plants toward treatment with the EF-Tu- and flagellin-derived peptide epitopes elf18- and flg22, respectively, as measured by reactive oxygen species production, mitogen-activated protein kinase activation, and seedling growth inhibition. These new results do not support any involvement of Tyr-610 phosphorylation in either BR or immune signaling.
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Affiliation(s)
- Vijayata Singh
- Department of Plant Biology, University of Illinois, UrbanaIL, United States
| | - Artemis Perraki
- The Sainsbury Laboratory, Norwich Research ParkNorwich, United Kingdom
| | - Sang Y. Kim
- Department of Plant Biology, University of Illinois, UrbanaIL, United States
- United States Department of Agriculture, Agricultural Research ServiceUrbana, IL, United States
| | - Stuti Shrivastava
- Department of Plant Biology, University of Illinois, UrbanaIL, United States
| | - Jae H. Lee
- Department of Crop Sciences, University of Illinois, UrbanaIL, United States
| | - Youfu Zhao
- Department of Crop Sciences, University of Illinois, UrbanaIL, United States
| | | | - Man-Ho Oh
- Department of Biological Science, College of Biological Sciences and Biotechnology, Chungnam National UniversityDaejeon, South Korea
| | - Amy Marshall-Colon
- Department of Plant Biology, University of Illinois, UrbanaIL, United States
| | - Cyril Zipfel
- The Sainsbury Laboratory, Norwich Research ParkNorwich, United Kingdom
| | - Steven C. Huber
- Department of Plant Biology, University of Illinois, UrbanaIL, United States
- United States Department of Agriculture, Agricultural Research ServiceUrbana, IL, United States
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