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Krasensky-Wrzaczek J, Wrzaczek M. New kids on the block-cysteine-rich receptor-like kinases in pattern-triggered immunity. CURRENT OPINION IN PLANT BIOLOGY 2024; 81:102619. [PMID: 39178641 DOI: 10.1016/j.pbi.2024.102619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2024] [Revised: 07/15/2024] [Accepted: 08/01/2024] [Indexed: 08/26/2024]
Abstract
Plant-specific receptor-like protein kinases (RLKs) are essential for pathogen recognition during pattern-triggered immunity. Together with coreceptors and associated proteins, they act as bona fide immune receptors, perceiving a variety of microbe-associated molecular patterns or damage-associated molecular patterns. The cysteine-rich receptor-like kinases (CRKs) form one of the biggest subgroups of RLKs, but so far, their ligands have not been identified. It has been shown that CRKs play important roles in plant immunity and defense responses as well as in response to abiotic stimuli and in control of plant development. However, molecular information on how CRKs integrate with the known framework of signaling components controlling early defense responses remains enigmatic.
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Affiliation(s)
- Julia Krasensky-Wrzaczek
- Institute of Plant Molecular Biology, Biology Centre, Czech Academy of Sciences, Branišovská 1160/31, 370 05 České Budějovice, Czech Republic
| | - Michael Wrzaczek
- Institute of Plant Molecular Biology, Biology Centre, Czech Academy of Sciences, Branišovská 1160/31, 370 05 České Budějovice, Czech Republic; Faculty of Science, University of South Bohemia, Branišovská 1645/31a, 370 05 České Budějovice, Czech Republic.
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2
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Liu X, Sukumaran S, Viitanen E, Naik N, Hassan S, Aronsson H. An Accurate Representation of the Number of bZIP Transcription Factors in the Triticum aestivum (Wheat) Genome and the Regulation of Functional Genes during Salt Stress. Curr Issues Mol Biol 2024; 46:4417-4436. [PMID: 38785536 PMCID: PMC11120151 DOI: 10.3390/cimb46050268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 04/24/2024] [Accepted: 04/28/2024] [Indexed: 05/25/2024] Open
Abstract
Climate change is dramatically increasing the overall area of saline soils around the world, which is increasing by approximately two million hectares each year. Soil salinity decreases crop yields and, thereby, makes farming less profitable, potentially causing increased poverty and hunger in many areas. A solution to this problem is increasing the salt tolerance of crop plants. Transcription factors (TFs) within crop plants represent a key to understanding salt tolerance, as these proteins play important roles in the regulation of functional genes linked to salt stress. The basic leucine zipper (bZIP) TF has a well-documented role in the regulation of salt tolerance. To better understand how bZIP TFs are linked to salt tolerance, we performed a genome-wide analysis in wheat using the Chinese spring wheat genome, which has been assembled by the International Wheat Genome Sequencing Consortium. We identified 89 additional bZIP gene sequences, which brings the total of bZIP gene sequences in wheat to 237. The majority of these 237 sequences included a single bZIP protein domain; however, different combinations of five other domains also exist. The bZIP proteins are divided into ten subfamily groups. Using an in silico analysis, we identified five bZIP genes (ABF2, ABF4, ABI5, EMBP1, and VIP1) that were involved in regulating salt stress. By scrutinizing the binding properties to the 2000 bp upstream region, we identified putative functional genes under the regulation of these TFs. Expression analyses of plant tissue that had been treated with or without 100 mM NaCl revealed variable patterns between the TFs and functional genes. For example, an increased expression of ABF4 was correlated with an increased expression of the corresponding functional genes in both root and shoot tissues, whereas VIP1 downregulation in root tissues strongly decreased the expression of two functional genes. Identifying strategies to sustain the expression of the functional genes described in this study could enhance wheat's salt tolerance.
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Affiliation(s)
- Xin Liu
- Department of Biological and Environmental Sciences, University of Gothenburg, Box 461, 405 30 Gothenburg, Sweden; (X.L.); (S.S.); (E.V.); (N.N.); (S.H.)
- Triticeae Research Institute, Sichuan Agricultural University, Wenjiang 611130, China
| | - Selvakumar Sukumaran
- Department of Biological and Environmental Sciences, University of Gothenburg, Box 461, 405 30 Gothenburg, Sweden; (X.L.); (S.S.); (E.V.); (N.N.); (S.H.)
| | - Esteri Viitanen
- Department of Biological and Environmental Sciences, University of Gothenburg, Box 461, 405 30 Gothenburg, Sweden; (X.L.); (S.S.); (E.V.); (N.N.); (S.H.)
| | - Nupur Naik
- Department of Biological and Environmental Sciences, University of Gothenburg, Box 461, 405 30 Gothenburg, Sweden; (X.L.); (S.S.); (E.V.); (N.N.); (S.H.)
| | - Sameer Hassan
- Department of Biological and Environmental Sciences, University of Gothenburg, Box 461, 405 30 Gothenburg, Sweden; (X.L.); (S.S.); (E.V.); (N.N.); (S.H.)
| | - Henrik Aronsson
- Department of Biological and Environmental Sciences, University of Gothenburg, Box 461, 405 30 Gothenburg, Sweden; (X.L.); (S.S.); (E.V.); (N.N.); (S.H.)
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3
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Zameer R, Alwutayd KM, Alshehri D, Mubarik MS, Li C, Yu C, Li Z. Identification of cysteine-rich receptor-like kinase gene family in potato: revealed StCRLK9 in response to heat, salt and drought stresses. FUNCTIONAL PLANT BIOLOGY : FPB 2024; 51:FP23320. [PMID: 38723163 DOI: 10.1071/fp23320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Accepted: 04/09/2024] [Indexed: 05/18/2024]
Abstract
The investigation into cysteine-rich receptor-like kinases (CRLKs) holds pivotal significance as these conserved, upstream signalling molecules intricately regulate fundamental biological processes such as plant growth, development and stress adaptation. This study undertakes a comprehensive characterisation of CRLKs in Solanum tuberosum (potato), a staple food crop of immense economic importance. Employing comparative genomics and evolutionary analyses, we identified 10 distinct CRLK genes in potato. Further categorisation into three major groups based on sequence similarity was performed. Each CRLK member in potato was systematically named according to its chromosomal position. Multiple sequence alignment and phylogenetic analyses unveiled conserved gene structures and motifs within the same groups. The genomic distribution of CRLKs was observed across Chromosomes 2-5, 8 and 12. Gene duplication analysis highlighted a noteworthy trend, with most gene pairs exhibiting a Ka/Ks ratio greater than one, indicating positive selection of StCRLKs in potato. Salt and drought stresses significantly impacted peroxidase and catalase activities in potato seedlings. The presence of diverse cis -regulatory elements, including hormone-responsive elements, underscored their involvement in myriad biotic and abiotic stress responses. Interestingly, interactions between the phytohormone auxin and CRLK proteins unveiled a potential auxin-mediated regulatory mechanism. A holistic approach combining transcriptomics and quantitative PCR validation identified StCRLK9 as a potential candidate involved in plant response to heat, salt and drought stresses. This study lays a robust foundation for future research on the functional roles of the CRLK gene family in potatoes, offering valuable insights into their diverse regulatory mechanisms and potential applications in stress management.
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Affiliation(s)
- Roshan Zameer
- School of Life Sciences, Henan University, Kaifeng, China
| | - Khairiah Mubarak Alwutayd
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Dikhnah Alshehri
- Department of Biology, Faculty of Science, University of Tabuk, Tabuk 71491, Saudi Arabia
| | | | - Cheng Li
- School of Life Sciences, Henan University, Kaifeng, China
| | - Chengde Yu
- School of Life Sciences, Henan University, Kaifeng, China
| | - Zhifang Li
- School of Life Sciences, Henan University, Kaifeng, China
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4
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Gandhi A, Oelmüller R. Emerging Roles of Receptor-like Protein Kinases in Plant Response to Abiotic Stresses. Int J Mol Sci 2023; 24:14762. [PMID: 37834209 PMCID: PMC10573068 DOI: 10.3390/ijms241914762] [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: 08/31/2023] [Revised: 09/26/2023] [Accepted: 09/27/2023] [Indexed: 10/15/2023] Open
Abstract
The productivity of plants is hindered by unfavorable conditions. To perceive stress signals and to transduce these signals to intracellular responses, plants rely on membrane-bound receptor-like kinases (RLKs). These play a pivotal role in signaling events governing growth, reproduction, hormone perception, and defense responses against biotic stresses; however, their involvement in abiotic stress responses is poorly documented. Plant RLKs harbor an N-terminal extracellular domain, a transmembrane domain, and a C-terminal intracellular kinase domain. The ectodomains of these RLKs are quite diverse, aiding their responses to various stimuli. We summarize here the sub-classes of RLKs based on their domain structure and discuss the available information on their specific role in abiotic stress adaptation. Furthermore, the current state of knowledge on RLKs and their significance in abiotic stress responses is highlighted in this review, shedding light on their role in influencing plant-environment interactions and opening up possibilities for novel approaches to engineer stress-tolerant crop varieties.
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Affiliation(s)
| | - Ralf Oelmüller
- Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Department of Plant Physiology, Friedrich-Schiller-University, 07743 Jena, Germany;
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5
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Fatima K, Sadaqat M, Azeem F, Rao MJ, Albekairi NA, Alshammari A, Tahir ul Qamar M. Integrated omics and machine learning-assisted profiling of cysteine-rich-receptor-like kinases from three peanut spp . revealed their role in multiple stresses. Front Genet 2023; 14:1252020. [PMID: 37799143 PMCID: PMC10547876 DOI: 10.3389/fgene.2023.1252020] [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: 09/05/2023] [Indexed: 10/07/2023] Open
Abstract
Arachis hypogaea (peanut) is a leading oil and protein-providing crop with a major food source in many countries. It is mostly grown in tropical regions and is largely affected by abiotic and biotic stresses. Cysteine-rich receptor-like kinases (CRKs) is a family of transmembrane proteins that play important roles in regulating stress-signaling and defense mechanisms, enabling plants to tolerate stress conditions. However, almost no information is available regarding this gene family in Arachis hypogaea and its progenitors. This study conducts a pangenome-wide investigation of A. hypogaea and its two progenitors, A. duranensis and A. ipaensis CRK genes (AhCRKs, AdCRKs, and AiCRKs). The gene structure, conserved motif patterns, phylogenetic history, chromosomal distribution, and duplication were studied in detail, showing the intraspecies structural conservation and evolutionary patterns. Promoter cis-elements, protein-protein interactions, GO enrichment, and miRNA targets were also predicted, showing their potential functional conservation. Their expression in salt and drought stresses was also comprehensively studied. The CRKs identified were divided into three groups, phylogenetically. The expansion of this gene family in peanuts was caused by both types of duplication: tandem and segmental. Furthermore, positive as well as negative selection pressure directed the duplication process. The peanut CRK genes were also enriched in hormones, light, development, and stress-related elements. MicroRNA (miRNA) also targeted the AhCRK genes, which suggests the regulatory association of miRNAs in the expression of these genes. Transcriptome datasets showed that AhCRKs have varying expression levels under different abiotic stress conditions. Furthermore, the multi-stress responsiveness of the AhCRK genes was evaluated using a machine learning-based method, Random Forest (RF) classifier. The 3D structures of AhCRKs were also predicted. Our study can be utilized in developing a detailed understanding of the stress regulatory mechanisms of the CRK gene family in peanuts and its further studies to improve the genetic makeup of peanuts to thrive better under stress conditions.
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Affiliation(s)
- Kinza Fatima
- Integrative Omics and Molecular Modeling Laboratory, Department of Bioinformatics and Biotechnology, Government College University Faisalabad (GCUF), Faisalabad, Pakistan
| | - Muhammad Sadaqat
- Integrative Omics and Molecular Modeling Laboratory, Department of Bioinformatics and Biotechnology, Government College University Faisalabad (GCUF), Faisalabad, Pakistan
| | - Farrukh Azeem
- Integrative Omics and Molecular Modeling Laboratory, Department of Bioinformatics and Biotechnology, Government College University Faisalabad (GCUF), Faisalabad, Pakistan
| | - Muhammad Junaid Rao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Sugarcane Biology, College of Agriculture, Guangxi University, Nanning, Guangxi, China
| | - Norah A. Albekairi
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Abdulrahman Alshammari
- Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Muhammad Tahir ul Qamar
- Integrative Omics and Molecular Modeling Laboratory, Department of Bioinformatics and Biotechnology, Government College University Faisalabad (GCUF), Faisalabad, Pakistan
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6
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Zeiner A, Colina FJ, Citterico M, Wrzaczek M. CYSTEINE-RICH RECEPTOR-LIKE PROTEIN KINASES: their evolution, structure, and roles in stress response and development. JOURNAL OF EXPERIMENTAL BOTANY 2023; 74:4910-4927. [PMID: 37345909 DOI: 10.1093/jxb/erad236] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 06/19/2023] [Indexed: 06/23/2023]
Abstract
Plant-specific receptor-like protein kinases (RLKs) are central components for sensing the extracellular microenvironment. CYSTEINE-RICH RLKs (CRKs) are members of one of the biggest RLK subgroups. Their physiological and molecular roles have only begun to be elucidated, but recent studies highlight the diverse types of proteins interacting with CRKs, as well as the localization of CRKs and their lateral organization within the plasma membrane. Originally the DOMAIN OF UNKNOWN FUNCTION 26 (DUF26)-containing extracellular region of the CRKs was proposed to act as a redox sensor, but the potential activating post-translational modification or ligands perceived remain elusive. Here, we summarize recent progress in the analysis of CRK evolution, molecular function, and role in plant development, abiotic stress responses, plant immunity, and symbiosis. The currently available information on CRKs and related proteins suggests that the CRKs are central regulators of plant signaling pathways. However, more research using classical methods and interdisciplinary approaches in various plant model species, as well as structural analyses, will not only enhance our understanding of the molecular function of CRKs, but also elucidate the contribution of other cellular components in CRK-mediated signaling pathways.
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Affiliation(s)
- Adam Zeiner
- Institute of Plant Molecular Biology, Biology Centre, Czech Academy of Sciences, 370 05 České Budějovice, Czech Republic
- Faculty of Science, University of South Bohemia, 370 05 České Budějovice, Czech Republic
| | - Francisco J Colina
- Institute of Plant Molecular Biology, Biology Centre, Czech Academy of Sciences, 370 05 České Budějovice, Czech Republic
| | - Matteo Citterico
- Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, and Viikki Plant Science Center, University of Helsinki, FI-00014 Helsinki, Finland
| | - Michael Wrzaczek
- Institute of Plant Molecular Biology, Biology Centre, Czech Academy of Sciences, 370 05 České Budějovice, Czech Republic
- Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, and Viikki Plant Science Center, University of Helsinki, FI-00014 Helsinki, Finland
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7
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Piovesana M, Wood AKM, Smith DP, Deery MJ, Bayliss R, Carrera E, Wellner N, Kosik O, Napier JA, Kurup S, Matthes MC. A point mutation in the kinase domain of CRK10 leads to xylem vessel collapse and activation of defence responses in Arabidopsis. JOURNAL OF EXPERIMENTAL BOTANY 2023; 74:3104-3121. [PMID: 36869735 DOI: 10.1093/jxb/erad080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 02/27/2023] [Indexed: 05/21/2023]
Abstract
Cysteine-rich receptor-like kinases (CRKs) are a large family of plasma membrane-bound receptors ubiquitous in higher plants. However, despite their prominence, their biological roles have remained largely elusive so far. In this study we report the characterization of an Arabidopsis mutant named crk10-A397T in which alanine 397 has been replaced by a threonine in the αC helix of the kinase domain of CRK10, known to be a crucial regulatory module in mammalian kinases. The crk10-A397T mutant is a dwarf that displays collapsed xylem vessels in the root and hypocotyl, whereas the vasculature of the inflorescence develops normally. In situ phosphorylation assays with His-tagged wild type and crk10-A397T versions of the CRK10 kinase domain revealed that both alleles are active kinases capable of autophosphorylation, with the newly introduced threonine acting as an additional phosphorylation site in crk10-A397T. Transcriptomic analysis of wild type and crk10-A397T mutant hypocotyls revealed that biotic and abiotic stress-responsive genes are constitutively up-regulated in the mutant, and a root-infection assay with the vascular pathogen Fusarium oxysporum demonstrated that the mutant has enhanced resistance to this pathogen compared with wild type plants. Taken together our results suggest that crk10-A397T is a gain-of-function allele of CRK10, the first such mutant to have been identified for a CRK in Arabidopsis.
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Affiliation(s)
- Maiara Piovesana
- Department of Plant Sciences, Rothamsted Research, Harpenden AL5 2JQ, UK
- College of Life and Environmental Sciences, Streatham Campus, Exeter EX4 4PY, UK
| | - Ana K M Wood
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden AL5 2JQ, UK
| | - Daniel P Smith
- Department of Computational and Analytical Sciences, Rothamsted Research, Harpenden AL5 2JQ, UK
| | - Michael J Deery
- Cambridge Centre for Proteomics, University of Cambridge, Cambridge CB2 1QR, UK
| | - Richard Bayliss
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK
| | - Esther Carrera
- Instituto de Biología Molecular y Celular de Plantas, Universidad Politècnica de València, Valencia 46022, Spain
| | | | - Ondrej Kosik
- Department of Plant Sciences, Rothamsted Research, Harpenden AL5 2JQ, UK
| | - Johnathan A Napier
- Department of Plant Sciences, Rothamsted Research, Harpenden AL5 2JQ, UK
| | - Smita Kurup
- Department of Plant Sciences, Rothamsted Research, Harpenden AL5 2JQ, UK
| | - Michaela C Matthes
- Department of Plant Sciences, Rothamsted Research, Harpenden AL5 2JQ, UK
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8
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Rosas MA, Sanguinet KA. Plant physiology: ARSK1, a regulator of TOR1 and mediator of P-adaptive root growth. Curr Biol 2023; 33:R359-R361. [PMID: 37160093 DOI: 10.1016/j.cub.2023.03.074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Root growth inhibition under phosphorous deficiency was long hypothesized to be the result of toxic iron levels in root tips. However, a new study reveals ARSK1 and TOR1 regulate root growth within hours of phosphorous starvation prior to changes in iron accumulation.
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Affiliation(s)
- Miguel A Rosas
- Department of Crop and Soil Sciences & Molecular Plant Sciences Graduate Program, Washington State University, Pullman, WA 91164, USA
| | - Karen A Sanguinet
- Department of Crop and Soil Sciences & Molecular Plant Sciences Graduate Program, Washington State University, Pullman, WA 91164, USA.
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9
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Cho H, Banf M, Shahzad Z, Van Leene J, Bossi F, Ruffel S, Bouain N, Cao P, Krouk G, De Jaeger G, Lacombe B, Brandizzi F, Rhee SY, Rouached H. ARSK1 activates TORC1 signaling to adjust growth to phosphate availability in Arabidopsis. Curr Biol 2023; 33:1778-1786.e5. [PMID: 36963384 PMCID: PMC10175222 DOI: 10.1016/j.cub.2023.03.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 02/12/2023] [Accepted: 03/02/2023] [Indexed: 03/26/2023]
Abstract
Nutrient sensing and signaling are essential for adjusting growth and development to available resources. Deprivation of the essential mineral phosphorus (P) inhibits root growth.1 The molecular processes that sense P limitation to trigger early root growth inhibition are not known yet. Target of rapamycin (TOR) kinase is a central regulatory hub in eukaryotes to adapt growth to internal and external nutritional cues.2,3 How nutritional signals are transduced to TOR to control plant growth remains unclear. Here, we identify Arabidopsis-root-specific kinase 1 (ARSK1), which attenuates initial root growth inhibition in response to P limitation. We demonstrate that ARSK1 phosphorylates and stabilizes the regulatory-associated protein of TOR 1B (RAPTOR1B), a component of the TOR complex 1, to adjust root growth to P availability. These findings uncover signaling components acting upstream of TOR to balance growth to P availability.
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Affiliation(s)
- Huikyong Cho
- The Plant Resilience Institute, Michigan State University, East Lansing, MI 48824, USA; Department of Plant, Soil, and Microbial Sciences, Michigan State University, East Lansing, MI 48824, USA
| | - Michael Banf
- Department of Plant Biology, Carnegie Institution for Science, Stanford, CA 94305, USA
| | - Zaigham Shahzad
- Department of Life Sciences, Lahore University of Management Sciences, Lahore 54792, Pakistan
| | - Jelle Van Leene
- Ghent University, Department of Plant Biotechnology and Bioinformatics, 9052 Ghent, Belgium; VIB Center for Plant Systems Biology, 9052 Ghent, Belgium
| | - Flavia Bossi
- Department of Plant Biology, Carnegie Institution for Science, Stanford, CA 94305, USA
| | - Sandrine Ruffel
- Institute for Plant Sciences of Montpellier, University Montpellier, CNRS, INRAE, Montpellier 34060, France
| | - Nadia Bouain
- Institute for Plant Sciences of Montpellier, University Montpellier, CNRS, INRAE, Montpellier 34060, France
| | - Pengfei Cao
- MSU DOE-Plant Research Laboratory, Michigan State University, East Lansing, MI 48824, USA
| | - Gabiel Krouk
- Institute for Plant Sciences of Montpellier, University Montpellier, CNRS, INRAE, Montpellier 34060, France
| | - Geert De Jaeger
- Ghent University, Department of Plant Biotechnology and Bioinformatics, 9052 Ghent, Belgium; VIB Center for Plant Systems Biology, 9052 Ghent, Belgium
| | - Benoit Lacombe
- Institute for Plant Sciences of Montpellier, University Montpellier, CNRS, INRAE, Montpellier 34060, France
| | - Federica Brandizzi
- MSU DOE-Plant Research Laboratory, Michigan State University, East Lansing, MI 48824, USA
| | - Seung Y Rhee
- Department of Plant Biology, Carnegie Institution for Science, Stanford, CA 94305, USA.
| | - Hatem Rouached
- The Plant Resilience Institute, Michigan State University, East Lansing, MI 48824, USA; Department of Plant, Soil, and Microbial Sciences, Michigan State University, East Lansing, MI 48824, USA.
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10
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Ma LS, Tsai WL, Damei FA, Kalunke RM, Xu MY, Lin YH, Lee HC. Maize Antifungal Protein AFP1 Elevates Fungal Chitin Levels by Targeting Chitin Deacetylases and Other Glycoproteins. mBio 2023; 14:e0009323. [PMID: 36946727 PMCID: PMC10128019 DOI: 10.1128/mbio.00093-23] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023] Open
Abstract
Pathogenic fungi convert chitin to chitosan to evade plant perception and disarm chitin-triggered immune responses. Whether plants have evolved factors to counteract this evasion mechanism remains obscure. Here, we decipher the mechanism underlying the antifungal activity of maize secretory mannose-binding cysteine-rich receptor-like secreted protein (CRRSP), antifungal protein 1 (AFP1). AFP1 binds to multiple sites on the surface of sporidial cells, filaments, and germinated spores of the biotrophic fungus Ustilago maydis. It inhibits cell growth and budding, as well as spore germination. AFP1 promiscuously interacts with most chitin deacetylases (CDAs) by recognizing the conserved NodB domain to interfere with the enzyme activity. Deletion of O-mannosyltransferase 4 decreases protein mannosylation, which correlates with reduced AFP1 binding and antifungal activity, suggesting that AFP1 interacts with mannosylated proteins to exhibit an inhibitory effect. AFP1 also has extended inhibitory activity against Saccharomyces cerevisiae; however, AFP1 did not reduce binding to the double ΔΔcda1,2 mutant, suggesting the targets of AFP1 have expanded to other cell surface glycoproteins, probably facilitated by its mannose-binding property. Increasing chitin levels by modulating the activity of cell surface glycoproteins is a universal feature of AFP1 interacting with a broad spectrum of fungi to inhibit their growth. IMPORTANCE Plants alert immune systems by recognizing the fungal pathogen cell wall component chitin via pattern recognition cell surface receptors. Successful fungal pathogens escape the perception by deacetylating chitin to chitosan, which is also necessary for fungal cell development and virulence. Targeting glycoproteins that are associated with regulating chitin metabolism and maintaining cell wall morphogenesis presents an effective strategy to combat fungal pathogens by simultaneously altering cell wall plasticity, activating chitin-triggered immunity, and impairing fungal viability. Our study provides molecular insights into a plant DUF26 domain-containing secretory protein in warding off a broad range of fungal pathogens by acting on more than one glycoprotein target.
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Affiliation(s)
- Lay-Sun Ma
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan
| | - Wei-Lun Tsai
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan
| | | | - Raviraj M Kalunke
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan
| | - Meng-Yun Xu
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan
| | - Yu-Han Lin
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan
| | - Hui-Chun Lee
- Institute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan
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11
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Takeda T, Takahashi M, Shimizu M, Sugihara Y, Yamashita T, Saitoh H, Fujisaki K, Ishikawa K, Utsushi H, Kanzaki E, Sakamoto Y, Abe A, Terauchi R. Rice apoplastic CBM1-interacting protein counters blast pathogen invasion by binding conserved carbohydrate binding module 1 motif of fungal proteins. PLoS Pathog 2022; 18:e1010792. [PMID: 36173975 PMCID: PMC9521807 DOI: 10.1371/journal.ppat.1010792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 08/04/2022] [Indexed: 11/20/2022] Open
Abstract
When infecting plants, fungal pathogens secrete cell wall-degrading enzymes (CWDEs) that break down cellulose and hemicellulose, the primary components of plant cell walls. Some fungal CWDEs contain a unique domain, named the carbohydrate binding module (CBM), that facilitates their access to polysaccharides. However, little is known about how plants counteract pathogen degradation of their cell walls. Here, we show that the rice cysteine-rich repeat secretion protein OsRMC binds to and inhibits xylanase MoCel10A of the blast fungus pathogen Magnaporthe oryzae, interfering with its access to the rice cell wall and degradation of rice xylan. We found binding of OsRMC to various CBM1-containing enzymes, suggesting that it has a general role in inhibiting the action of CBM1. OsRMC is localized to the apoplast, and its expression is strongly induced in leaves infected with M. oryzae. Remarkably, knockdown and overexpression of OsRMC reduced and enhanced rice defense against M. oryzae, respectively, demonstrating that inhibition of CBM1-containing fungal enzymes by OsRMC is crucial for rice defense. We also identified additional CBM-interacting proteins (CBMIPs) from Arabidopsis thaliana and Setaria italica, indicating that a wide range of plants counteract pathogens through this mechanism. Plants have evolved various activity-inhibiting proteins as a defense against fungal cell wall-degrading enzymes (CWDEs), but how plants counteract the function of fungal enzymes containing carbohydrate binding modules (CBMs) remains unknown. Here, we demonstrate that OsRMC, a member of the cysteine-rich repeat secretion protein family, interacts with fungal CBM1. OsRMC binding to CBM1 of a blast fungal xylanase blocks access to cellulose, resulting in the inhibition of xylanase enzymatic activity. Our study provides significant insights into plant countermeasures against CWDEs in the apoplastic space during plant-fungal pathogen interactions. It also reveals a molecular function of the DUF26 domain widely distributed in plant proteins.
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Affiliation(s)
- Takumi Takeda
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
- * E-mail: (TT); (RT)
| | | | - Motoki Shimizu
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
| | - Yu Sugihara
- Laboratory of Crop Evolution, Graduate School of Agriculture, Kyoto University, Mozume, Muko, Kyoto, Japan
| | | | - Hiromasa Saitoh
- Department of Molecular Microbiology, Tokyo University of Agriculture, Setagaya-ku, Tokyo, Japan
| | - Koki Fujisaki
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
| | | | - Hiroe Utsushi
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
| | - Eiko Kanzaki
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
| | | | - Akira Abe
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
| | - Ryohei Terauchi
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
- Laboratory of Crop Evolution, Graduate School of Agriculture, Kyoto University, Mozume, Muko, Kyoto, Japan
- * E-mail: (TT); (RT)
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12
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Weber KC, Mahmoud LM, Stanton D, Welker S, Qiu W, Grosser JW, Levy A, Dutt M. Insights into the mechanism of Huanglongbing tolerance in the Australian finger lime ( Citrus australasica). FRONTIERS IN PLANT SCIENCE 2022; 13:1019295. [PMID: 36340410 PMCID: PMC9634478 DOI: 10.3389/fpls.2022.1019295] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Accepted: 09/22/2022] [Indexed: 05/13/2023]
Abstract
The Australian finger lime (Citrus australasica) is tolerant to Huanglongbing (HLB; Citrus greening). This species can be utilized to develop HLB tolerant citrus cultivars through conventional breeding and biotechnological approaches. In this report, we conducted a comprehensive analysis of transcriptomic data following a non-choice infection assay to understand the CaLas tolerance mechanisms in the finger lime. After filtering 3,768 differentially expressed genes (DEGs), 2,396 were downregulated and 1,372 were upregulated in CaLas-infected finger lime compared to CaLas-infected HLB-susceptible 'Valencia' sweet orange. Comparative analyses revealed several DEGs belonging to cell wall, β-glucanase, proteolysis, R genes, signaling, redox state, peroxidases, glutathione-S-transferase, secondary metabolites, and pathogenesis-related (PR) proteins categories. Our results indicate that the finger lime has evolved specific redox control systems to mitigate the reactive oxygen species and modulate the plant defense response. We also identified candidate genes responsible for the production of Cys-rich secretory proteins and Pathogenesis-related 1 (PR1-like) proteins that are highly upregulated in infected finger lime relative to noninfected and infected 'Valencia' sweet orange. Additionally, the anatomical analysis of phloem and stem tissues in finger lime and 'Valencia' suggested better regeneration of phloem tissues in finger lime in response to HLB infection. Analysis of callose formation following infection revealed a significant difference in the production of callose plugs between the stem phloem of CaLas+ 'Valencia' sweet orange and finger lime. Understanding the mechanism of resistance will help the scientific community design strategies to protect trees from CaLas infection and assist citrus breeders in developing durable HLB tolerant citrus varieties.
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Affiliation(s)
- Kyle C. Weber
- Citrus Research and Education Center, University of Florida, Lake Alfred, FL, United States
| | - Lamiaa M. Mahmoud
- Citrus Research and Education Center, University of Florida, Lake Alfred, FL, United States
- Pomology Department, Faculty of Agriculture, Mansoura University, Mansoura, Egypt
| | - Daniel Stanton
- Citrus Research and Education Center, University of Florida, Lake Alfred, FL, United States
| | - Stacy Welker
- Citrus Research and Education Center, University of Florida, Lake Alfred, FL, United States
| | - Wenming Qiu
- Institute of Fruit and Tea, Hubei Academy of Agricultural Sciences, Wuhan, China
| | - Jude W. Grosser
- Citrus Research and Education Center, University of Florida, Lake Alfred, FL, United States
| | - Amit Levy
- Citrus Research and Education Center, University of Florida, Lake Alfred, FL, United States
| | - Manjul Dutt
- Citrus Research and Education Center, University of Florida, Lake Alfred, FL, United States
- *Correspondence: Manjul Dutt,
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13
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Ren J, Hu J, Zhang A, Ren S, Jing T, Wang X, Sun M, Huang L, Zeng B. The whole-genome and expression profile analysis of WRKY and RGAs in Dactylis glomerata showed that DG6C02319.1 and Dg WRKYs may cooperate in the immunity against rust. PeerJ 2021; 9:e11919. [PMID: 34466285 PMCID: PMC8380429 DOI: 10.7717/peerj.11919] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 07/16/2021] [Indexed: 02/01/2023] Open
Abstract
Orchardgrass (Dactylis glomerata) is one of the top four perennial forages worldwide and, despite its large economic advantages, often threatened by various environmental stresses. WRKY transcription factors (TFs) can regulate a variety of plant processes, widely participate in plant responses to biotic and abiotic stresses, and are one of the largest gene families in plants. WRKYs can usually bind W-box elements specifically. In this study, we identified a total of 93 DgWRKY genes and 281 RGAs, including 65, 169 and 47 nucleotide-binding site-leucine-rich repeats (NBS-LRRs), leucine-rich repeats receptor-like protein kinases (LRR-RLKs), and leucine-rich repeats receptor-like proteins (LRR-RLPs), respectively. Through analyzing the expression of DgWRKY genes in orchardgrass under different environmental stresses, it was found that many DgWRKY genes were differentially expressed under heat, drought, submergence, and rust stress. In particular, it was found that the greatest number of genes were differentially expressed under rust infection. Consistently, GO and KEGG enrichment analysis of all genes showed that 78 DgWRKY TFs were identified in the plant–pathogen interaction pathway, with 59 of them differentially expressed. Through cis-acting element prediction, 154 RGAs were found to contain W-box elements. Among them, DG6C02319.1 (a member of the LRR-RLK family) was identified as likely to interact with 14 DGWRKYs. Moreover, their expression levels in susceptible plants after rust inoculation were first up-regulated and then down-regulated, while those in the resistant plants were always up-regulated. In general, DgWRKYs responded to both biotic stress and abiotic stress. DgWRKYs and RGAs may synergistically respond to the response of orchardgrass to rust. This study provides meaningful insight into the molecular mechanisms of WRKY proteins in orchardgrass.
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Affiliation(s)
- Juncai Ren
- College of Animal Science and Technology, Southwest University, Chongqing, Chongqing, China
| | - Jialing Hu
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Ailing Zhang
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Shuping Ren
- College of Animal Science and Technology, Southwest University, Chongqing, Chongqing, China
| | - Tingting Jing
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Xiaoshan Wang
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Min Sun
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Linkai Huang
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Bing Zeng
- College of Animal Science and Technology, Southwest University, Chongqing, Chongqing, China
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14
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Moolhuijzen P, Lawrence JA, Ellwood SR. Potentiators of Disease During Barley Infection by Pyrenophora teres f. teres in a Susceptible Interaction. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2021; 34:779-792. [PMID: 33787315 DOI: 10.1094/mpmi-10-20-0297-r] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Pyrenophora teres f. teres is a necrotrophic fungal pathogen and causal agent of net form net blotch (NFNB), a significant disease of barley. RNA-seq data encompassing asymptomatic and subsequent necrotrophic phases of the pathogen was obtained for P. teres f. teres isolate W1-1 in NFNB-sensitive cultivar Baudin. Host genes notably regulated during infection included concerted induction of over half the repertoire of disease resistance genes, together with genes involved in oxidation-reduction processes, characteristic of a hypersensitive response. Several systemic acquired resistance response genes were suppressed and there was a complete absence of defense-related thionin gene expression. In P. teres f. teres, genes involved in hydrolase activities and cell-wall catabolic processes were induced during infection, while nitrate assimilation and response to oxidative stress processes were suppressed. Timecourse data allowed a number of predicted P. teres f. teres effector genes with differing expression profiles to be identified that may underlie barley sensitivity to NFNB. Candidate genes involved in the host-pathogen interaction provide a basis for functional characterization and control strategies based on fungicide or mutation targets, which will facilitate further research aimed at controlling NFNB disease.[Formula: see text] Copyright © 2021 The Author(s). This is an open access article distributed under the CC BY 4.0 International license.
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Affiliation(s)
- Paula Moolhuijzen
- Centre for Crop and Disease Management, School of Molecular and Life Sciences, Curtin University, Bentley, WA 6102, Australia
| | - Julie A Lawrence
- Centre for Crop and Disease Management, School of Molecular and Life Sciences, Curtin University, Bentley, WA 6102, Australia
| | - Simon R Ellwood
- Centre for Crop and Disease Management, School of Molecular and Life Sciences, Curtin University, Bentley, WA 6102, Australia
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15
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Genome-Wide Identification and Characterization of Cysteine-Rich Receptor-Like Protein Kinase Genes in Tomato and Their Expression Profile in Response to Heat Stress. DIVERSITY 2021. [DOI: 10.3390/d13060258] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
During plant growth, development and stress adaption, receptor-like protein kinases (RLKs) are essential components in perceiving and integrating extracellular stimuli and transmitting the signals to activate the downstream signaling pathways. Cysteine-rich receptor-like protein kinases (CRKs) are a large subfamily of RLKs and their roles in modulating plant disease resistance are well elucidated. However, the roles of CRKs in plant abiotic stress responses, especially heat stress, are largely unknown. In this study, 35 SlCRK genes were identified in tomato (Solanum lycopersicum) based on the multiple sequence alignment and phylogenetic relationships. SlCRK genes are tandemly distributed on seven chromosomes and have similar exon–intron organization and common conserved motifs. Various phytohormone responsive, stress responsive cis-regulatory elements and heat shock elements are predicted in the promoter regions of SlCRK genes. Transcriptome analysis of tomato fruits under heat stress revealed that most SlCRK genes were downregulated upon heat treatment. GO enrichment analyses of genes that were co-expressed with SlCRK members have identified various stress responses related and proteasomal protein catabolic process related genes, which may be involved in heat stress signaling. Overall, our results provide valuable information for further research on the roles of SlCRKs in response to abiotic stress, especially heat stress.
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16
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Elicitor and Receptor Molecules: Orchestrators of Plant Defense and Immunity. Int J Mol Sci 2020; 21:ijms21030963. [PMID: 32024003 PMCID: PMC7037962 DOI: 10.3390/ijms21030963] [Citation(s) in RCA: 141] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 01/11/2020] [Accepted: 01/13/2020] [Indexed: 02/07/2023] Open
Abstract
Pathogen-associated molecular patterns (PAMPs), microbe-associated molecular patterns (MAMPs), herbivore-associated molecular patterns (HAMPs), and damage-associated molecular patterns (DAMPs) are molecules produced by microorganisms and insects in the event of infection, microbial priming, and insect predation. These molecules are then recognized by receptor molecules on or within the plant, which activates the defense signaling pathways, resulting in plant’s ability to overcome pathogenic invasion, induce systemic resistance, and protect against insect predation and damage. These small molecular motifs are conserved in all organisms. Fungi, bacteria, and insects have their own specific molecular patterns that induce defenses in plants. Most of the molecular patterns are either present as part of the pathogen’s structure or exudates (in bacteria and fungi), or insect saliva and honeydew. Since biotic stresses such as pathogens and insects can impair crop yield and production, understanding the interaction between these organisms and the host via the elicitor–receptor interaction is essential to equip us with the knowledge necessary to design durable resistance in plants. In addition, it is also important to look into the role played by beneficial microbes and synthetic elicitors in activating plants’ defense and protection against disease and predation. This review addresses receptors, elicitors, and the receptor–elicitor interactions where these components in fungi, bacteria, and insects will be elaborated, giving special emphasis to the molecules, responses, and mechanisms at play, variations between organisms where applicable, and applications and prospects.
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17
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Du D, Liu M, Xing Y, Chen X, Zhang Y, Zhu M, Lu X, Zhang Q, Ling Y, Sang X, Li Y, Zhang C, He G. Semi-dominant mutation in the cysteine-rich receptor-like kinase gene, ALS1, conducts constitutive defence response in rice. PLANT BIOLOGY (STUTTGART, GERMANY) 2019; 21:25-34. [PMID: 30101415 DOI: 10.1111/plb.12896] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 08/04/2018] [Indexed: 06/08/2023]
Abstract
Plants have evolved a sophisticated two-branch defence system to prevent the growth and spread of pathogen infection. The novel Cys-rich repeat (CRR) containing receptor-like kinases, known as CRKs, were reported to mediate defence resistance in plants. For rice, there are only two reports of CRKs. A semi-dominant lesion mimic mutant als1 (apoptosis leaf and sheath 1) in rice was identified to demonstrate spontaneous lesions on the leaf blade and sheath. A map-based cloning strategy was used for fine mapping and cloning of ALS1, which was confirmed to be a typical CRK in rice. Functional studies of ALS1 were conducted, including phylogenetic analysis, expression analysis, subcellular location and blast resistance identification. Most pathogenesis-related (PR) genes and other defence-related genes were activated and up-regulated to a high degree. ALS1 was expressed mainly in the leaf blade and sheath, in which further study revealed that ALS1 was present in the vascular bundles. ALS1 was located in the cell membrane of rice protoplasts, and its mutation did not change its subcellular location. Jasmonic acid (JA) and salicylic acid (SA) accumulation were observed in als1, and enhanced blast resistance was also observed. The mutation of ALS1 caused a constitutively activated defence response in als1. The results of our study imply that ALS1 participates in a defence response resembling the common SA-, JA- and NH1-mediated defence responses in rice.
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Affiliation(s)
- D Du
- Rice Research Institute, Key Laboratory of Application and Safety Control of Genetically Modified Crops, Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China
| | - M Liu
- Rice Research Institute, Key Laboratory of Application and Safety Control of Genetically Modified Crops, Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China
| | - Y Xing
- Rice Research Institute, Key Laboratory of Application and Safety Control of Genetically Modified Crops, Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China
| | - X Chen
- Rice Research Institute, Key Laboratory of Application and Safety Control of Genetically Modified Crops, Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China
| | - Y Zhang
- Rice Research Institute, Key Laboratory of Application and Safety Control of Genetically Modified Crops, Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China
| | - M Zhu
- Rice Research Institute, Key Laboratory of Application and Safety Control of Genetically Modified Crops, Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China
| | - X Lu
- Rice Research Institute, Key Laboratory of Application and Safety Control of Genetically Modified Crops, Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China
| | - Q Zhang
- Rice Research Institute, Key Laboratory of Application and Safety Control of Genetically Modified Crops, Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China
| | - Y Ling
- Rice Research Institute, Key Laboratory of Application and Safety Control of Genetically Modified Crops, Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China
| | - X Sang
- Rice Research Institute, Key Laboratory of Application and Safety Control of Genetically Modified Crops, Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China
| | - Y Li
- Rice Research Institute, Key Laboratory of Application and Safety Control of Genetically Modified Crops, Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China
| | - C Zhang
- Rice Research Institute, Key Laboratory of Application and Safety Control of Genetically Modified Crops, Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China
| | - G He
- Rice Research Institute, Key Laboratory of Application and Safety Control of Genetically Modified Crops, Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China
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18
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Ma LS, Wang L, Trippel C, Mendoza-Mendoza A, Ullmann S, Moretti M, Carsten A, Kahnt J, Reissmann S, Zechmann B, Bange G, Kahmann R. The Ustilago maydis repetitive effector Rsp3 blocks the antifungal activity of mannose-binding maize proteins. Nat Commun 2018; 9:1711. [PMID: 29703884 PMCID: PMC5923269 DOI: 10.1038/s41467-018-04149-0] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 04/06/2018] [Indexed: 12/22/2022] Open
Abstract
To cause disease in maize, the biotrophic fungus Ustilago maydis secretes a large arsenal of effector proteins. Here, we functionally characterize the repetitive effector Rsp3 (repetitive secreted protein 3), which shows length polymorphisms in field isolates and is highly expressed during biotrophic stages. Rsp3 is required for virulence and anthocyanin accumulation. During biotrophic growth, Rsp3 decorates the hyphal surface and interacts with at least two secreted maize DUF26-domain family proteins (designated AFP1 and AFP2). AFP1 binds mannose and displays antifungal activity against the rsp3 mutant but not against a strain constitutively expressing rsp3. Maize plants silenced for AFP1 and AFP2 partially rescue the virulence defect of rsp3 mutants, suggesting that blocking the antifungal activity of AFP1 and AFP2 by the Rsp3 effector is an important virulence function. Rsp3 orthologs are present in all sequenced smut fungi, and the ortholog from Sporisorium reilianum can complement the rsp3 mutant of U. maydis, suggesting a novel widespread fungal protection mechanism. The fungus Ustilago maydis secretes many effector proteins to cause disease in maize. Here, Ma et al. show that the repetitive effector Rsp3 is required for virulence by inhibiting the antifungal activity of two mannose-binding proteins that are secreted by the plant cells.
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Affiliation(s)
- Lay-Sun Ma
- Department of Organismic Interactions, Max Planck Institute for Terrestrial Microbiology, 35043, Marburg, Germany
| | - Lei Wang
- Department of Organismic Interactions, Max Planck Institute for Terrestrial Microbiology, 35043, Marburg, Germany.,Department of Pharmacology, Max Planck Institute for Heart and Lung Research, 61231, Bad Nauheim, Germany
| | - Christine Trippel
- Department of Organismic Interactions, Max Planck Institute for Terrestrial Microbiology, 35043, Marburg, Germany.,Department of Plant Cell Biology, Albrecht-von-Haller-Institute, Georg-August-University-Göttingen, 37077, Göttingen, Germany
| | - Artemio Mendoza-Mendoza
- Department of Organismic Interactions, Max Planck Institute for Terrestrial Microbiology, 35043, Marburg, Germany.,Bio-Protection Research Centre, Lincoln University, PO Box 64, Lincoln, 7647, New Zealand
| | - Steffen Ullmann
- Department of Organismic Interactions, Max Planck Institute for Terrestrial Microbiology, 35043, Marburg, Germany.,, Düsseldorfer Straße 177, 45481, Mülheim an der Ruhr, Germany
| | - Marino Moretti
- Department of Organismic Interactions, Max Planck Institute for Terrestrial Microbiology, 35043, Marburg, Germany
| | - Alexander Carsten
- Department of Organismic Interactions, Max Planck Institute for Terrestrial Microbiology, 35043, Marburg, Germany
| | - Jörg Kahnt
- Mass Spectroscopy Facility, Max Planck Institute for Terrestrial Microbiology, 35043 Marburg, Germany
| | - Stefanie Reissmann
- Department of Organismic Interactions, Max Planck Institute for Terrestrial Microbiology, 35043, Marburg, Germany
| | - Bernd Zechmann
- Center for Microscopy and Imaging (CMI), Baylor University, Waco, Texas, 76798-7046, USA
| | - Gert Bange
- LOEWE Center for Synthetic Microbiology and Faculty of Chemistry, Philipps-Universität Marburg, 35032 Marburg, Germany
| | - Regine Kahmann
- Department of Organismic Interactions, Max Planck Institute for Terrestrial Microbiology, 35043, Marburg, Germany.
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19
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Transcriptome reprogramming of resistant and susceptible peach genotypes during Xanthomonas arboricola pv. pruni early leaf infection. PLoS One 2018; 13:e0196590. [PMID: 29698473 PMCID: PMC5919700 DOI: 10.1371/journal.pone.0196590] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 04/16/2018] [Indexed: 12/31/2022] Open
Abstract
Bacterial spot caused by Xanthomonas arboricola pv. pruni (Xap) is a major threat to Prunus species worldwide. The molecular mechanisms of peach resistance to Xap during early leaf infection were investigated by RNA-Seq analysis of two Prunus persica cultivars, ‘Redkist’ (resistant), and ‘JH Hale’ (susceptible) at 30 minutes, 1 and 3 hours-post-infection (hpi). Both cultivars exhibited extensive modulation of gene expression at 30 mpi, which reduced significantly at 1 hpi, increasing again at 3 hpi. Overall, 714 differentially expressed genes (DEGs) were detected in ‘Redkist’ (12% at 30 mpi and 1 hpi and 88% at 3 hpi). In ‘JH Hale’, 821 DEGs were identified (47% at 30 mpi and 1 hpi and 53% at 3 hpi). Highly up-regulated genes (fold change > 100) at 3 hpi exhibited higher fold change values in ‘Redkist’ than in ‘JH Hale’. RNA-Seq bioinformatics analyses were validated by RT-qPCR. In both cultivars, DEGs included genes with putative roles in perception, signal transduction, secondary metabolism, and transcription regulation, and there were defense responses in both cultivars, with enrichment for the gene ontology terms, ‘immune system process’, ‘defense response’, and ‘cell death’. There were particular differences between the cultivars in the intensity and kinetics of modulation of expression of genes with putative roles in transcriptional activity, secondary metabolism, photosynthesis, and receptor and signaling processes. Analysis of differential exon usage (DEU) revealed that both cultivars initiated remodeling their transcriptomes at 30 mpi; however, ‘Redkist’ exhibited alternative exon usage for a greater number of genes at every time point compared with ‘JH Hale’. Candidate resistance genes (WRKY-like, CRK-like, Copper amine oxidase-like, and TIR-NBS-LRR-like) are of interest for further functional characterization with the aim of elucidating their role in Prunus spp. resistance to Xap.
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20
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Zhang XN, Shi Y, Powers JJ, Gowda NB, Zhang C, Ibrahim HMM, Ball HB, Chen SL, Lu H, Mount SM. Transcriptome analyses reveal SR45 to be a neutral splicing regulator and a suppressor of innate immunity in Arabidopsis thaliana. BMC Genomics 2017; 18:772. [PMID: 29020934 PMCID: PMC5637254 DOI: 10.1186/s12864-017-4183-7] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 10/05/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Regulation of pre-mRNA splicing diversifies protein products and affects many biological processes. Arabidopsis thaliana Serine/Arginine-rich 45 (SR45), regulates pre-mRNA splicing by interacting with other regulatory proteins and spliceosomal subunits. Although SR45 has orthologs in diverse eukaryotes, including human RNPS1, the sr45-1 null mutant is viable. Narrow flower petals and reduced seed formation suggest that SR45 regulates genes involved in diverse processes, including reproduction. To understand how SR45 is involved in the regulation of reproductive processes, we studied mRNA from the wild-type and sr45-1 inflorescences using RNA-seq, and identified SR45-bound RNAs by immunoprecipitation. RESULTS Using a variety of bioinformatics tools, we identified a total of 358 SR45 differentially regulated (SDR) genes, 542 SR45-dependent alternative splicing (SAS) events, and 1812 SR45-associated RNAs (SARs). There is little overlap between SDR genes and SAS genes, and neither set of genes is enriched for flower or seed development. However, transcripts from reproductive process genes are significantly overrepresented in SARs. In exploring the fate of SARs, we found that a total of 81 SARs are subject to alternative splicing, while 14 of them are known Nonsense-Mediated Decay (NMD) targets. Motifs related to GGNGG are enriched both in SARs and near different types of SAS events, suggesting that SR45 recognizes this motif directly. Genes involved in plant defense are significantly over-represented among genes whose expression is suppressed by SR45, and sr45-1 plants do indeed show enhanced immunity. CONCLUSION We find that SR45 is a suppressor of innate immunity. We find that a single motif (GGNGG) is highly enriched in both RNAs bound by SR45 and in sequences near SR45- dependent alternative splicing events in inflorescence tissue. We find that the alternative splicing events regulated by SR45 are enriched for this motif whether the effect of SR45 is activation or repression of the particular event. Thus, our data suggests that SR45 acts to control splice site choice in a way that defies simple categorization as an activator or repressor of splicing.
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Affiliation(s)
- Xiao-Ning Zhang
- Biochemistry Program, Department of Biology, St. Bonaventure University, St. Bonaventure, NY, 14778, USA. .,CMNS-Institute for Advanced Computer Studies, University of Maryland, College Park, MD, 20742, USA.
| | - Yifei Shi
- Department of Cell Biology and Molecular Genetics and Center for Bioinformatics and Computational Biology, University of Maryland, College Park, MD, 20742, USA
| | - Jordan J Powers
- Biochemistry Program, St. Bonaventure University, St. Bonaventure, NY, 14778, USA
| | - Nikhil B Gowda
- Department of Biology, St. Bonaventure University, St. Bonaventure, NY, 14778, USA
| | - Chong Zhang
- Department of Biological Sciences, University of Maryland Baltimore County, Baltimore, MD, 21250, USA
| | - Heba M M Ibrahim
- Department of Cell Biology and Molecular Genetics and Center for Bioinformatics and Computational Biology, University of Maryland, College Park, MD, 20742, USA.,Genetics Department, Faculty of Agriculture, Cairo University, Cairo, Egypt
| | - Hannah B Ball
- Biochemistry Program, St. Bonaventure University, St. Bonaventure, NY, 14778, USA
| | - Samuel L Chen
- Bioinformatics Program, St. Bonaventure University, St. Bonaventure, NY, 14778, USA
| | - Hua Lu
- Department of Biological Sciences, University of Maryland Baltimore County, Baltimore, MD, 21250, USA
| | - Stephen M Mount
- Department of Cell Biology and Molecular Genetics and Center for Bioinformatics and Computational Biology, University of Maryland, College Park, MD, 20742, USA
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21
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Identification of the abiotic stress-related transcription in little Neptune grass Cymodocea nodosa with RNA-seq. Mar Genomics 2017; 34:47-56. [DOI: 10.1016/j.margen.2017.03.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 03/18/2017] [Accepted: 03/23/2017] [Indexed: 11/20/2022]
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22
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Santa Brigida AB, Rojas CA, Grativol C, de Armas EM, Entenza JOP, Thiebaut F, Lima MDF, Farrinelli L, Hemerly AS, Lifschitz S, Ferreira PCG. Sugarcane transcriptome analysis in response to infection caused by Acidovorax avenae subsp. avenae. PLoS One 2016; 11:e0166473. [PMID: 27936012 PMCID: PMC5147822 DOI: 10.1371/journal.pone.0166473] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Accepted: 10/28/2016] [Indexed: 12/22/2022] Open
Abstract
Sugarcane is an important tropical crop mainly cultivated to produce ethanol and sugar. Crop productivity is negatively affected by Acidovorax avenae subsp avenae (Aaa), which causes the red stripe disease. Little is known about the molecular mechanisms triggered in response to the infection. We have investigated the molecular mechanism activated in sugarcane using a RNA-seq approach. We have produced a de novo transcriptome assembly (TR7) from sugarcane RNA-seq libraries submitted to drought and infection with Aaa. Together, these libraries present 247 million of raw reads and resulted in 168,767 reference transcripts. Mapping in TR7 of reads obtained from infected libraries, revealed 798 differentially expressed transcripts, of which 723 were annotated, corresponding to 467 genes. GO and KEGG enrichment analysis showed that several metabolic pathways, such as code for proteins response to stress, metabolism of carbohydrates, processes of transcription and translation of proteins, amino acid metabolism and biosynthesis of secondary metabolites were significantly regulated in sugarcane. Differential analysis revealed that genes in the biosynthetic pathways of ET and JA PRRs, oxidative burst genes, NBS-LRR genes, cell wall fortification genes, SAR induced genes and pathogenesis-related genes (PR) were upregulated. In addition, 20 genes were validated by RT-qPCR. Together, these data contribute to a better understanding of the molecular mechanisms triggered by the Aaa in sugarcane and opens the opportunity for the development of molecular markers associated with disease tolerance in breeding programs.
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Affiliation(s)
- Ailton B. Santa Brigida
- Laboratório de Biologia Molecular de Plantas, Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brasil
| | - Cristian A. Rojas
- Instituto Latino-Americano de Ciências da Vida e da Natureza, Universidade Federal da Integração Latino-Americana, Foz do Iguaçu, Paraná, Brasil
| | - Clícia Grativol
- Laboratório de Química e Função de Proteínas e Peptídeos, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, Rio de Janeiro, Brasil
| | - Elvismary M. de Armas
- Departamento de Informática, Pontifícia Universidade Católica do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brasil
| | - Júlio O. P. Entenza
- Departamento de Informática, Pontifícia Universidade Católica do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brasil
| | - Flávia Thiebaut
- Laboratório de Biologia Molecular de Plantas, Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brasil
| | - Marcelo de F. Lima
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal Rural do Rio de Janeiro, Seropédica, Rio de Janeiro, Brasil
| | | | - Adriana S. Hemerly
- Laboratório de Biologia Molecular de Plantas, Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brasil
| | - Sérgio Lifschitz
- Departamento de Informática, Pontifícia Universidade Católica do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brasil
| | - Paulo C. G. Ferreira
- Laboratório de Biologia Molecular de Plantas, Instituto de Bioquímica Médica Leopoldo de Meis, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brasil
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Jogawat A, Vadassery J, Verma N, Oelmüller R, Dua M, Nevo E, Johri AK. PiHOG1, a stress regulator MAP kinase from the root endophyte fungus Piriformospora indica, confers salinity stress tolerance in rice plants. Sci Rep 2016; 6:36765. [PMID: 27849025 PMCID: PMC5111105 DOI: 10.1038/srep36765] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 10/20/2016] [Indexed: 12/04/2022] Open
Abstract
In this study, yeast HOG1 homologue from the root endophyte Piriformospora indica (PiHOG1) was isolated and functionally characterized. Functional expression of PiHOG1 in S. cerevisiae ∆hog1 mutant restored osmotolerance under high osmotic stress. Knockdown (KD) transformants of PiHOG1 generated by RNA interference in P. indica showed that genes for the HOG pathway, osmoresponse and salinity tolerance were less stimulated in KD-PiHOG1 compared to the wild-type under salinity stress. Furthermore, KD lines are impaired in the colonization of rice roots under salinity stress of 200 mM NaCl, and the biomass of the host plants, their shoot and root lengths, root number, photosynthetic pigment and proline contents were reduced as compared to rice plants colonized by WT P. indica. Therefore, PiHOG1 is critical for root colonisation, salinity tolerance and the performance of the host plant under salinity stress. Moreover, downregulation of PiHOG1 resulted not only in reduced and delayed phosphorylation of the remaining PiHOG1 protein in colonized salinity-stressed rice roots, but also in the downregulation of the upstream MAP kinase genes PiPBS2 and PiSSK2 involved in salinity tolerance signalling in the fungus. Our data demonstrate that PiHOG1 is not only involved in the salinity response of P. indica, but also helping host plant to overcome salinity stress.
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Affiliation(s)
- Abhimanyu Jogawat
- School of Life Sciences Jawaharlal Nehru University, New Delhi-110067, India
| | | | - Nidhi Verma
- School of Life Sciences Jawaharlal Nehru University, New Delhi-110067, India
| | - Ralf Oelmüller
- Institute of Plant Physiology, Friedrich-Schiller-University Jena, Dornburger Str. 159, 07743 Jena, Germany
| | - Meenakshi Dua
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Eviatar Nevo
- Department of Evolutionary and Environmental Biology, Institute of Evolution, University of Haifa, 199 Aba Khoushy Ave., Mount Carmel, Haifa, 3498838, Israel
| | - Atul Kumar Johri
- School of Life Sciences Jawaharlal Nehru University, New Delhi-110067, India
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Larkan NJ, Raman H, Lydiate DJ, Robinson SJ, Yu F, Barbulescu DM, Raman R, Luckett DJ, Burton W, Wratten N, Salisbury PA, Rimmer SR, Borhan MH. Multi-environment QTL studies suggest a role for cysteine-rich protein kinase genes in quantitative resistance to blackleg disease in Brassica napus. BMC PLANT BIOLOGY 2016; 16:183. [PMID: 27553246 PMCID: PMC4995785 DOI: 10.1186/s12870-016-0877-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 08/17/2016] [Indexed: 05/18/2023]
Abstract
BACKGROUND Resistance to the blackleg disease of Brassica napus (canola/oilseed rape), caused by the hemibiotrophic fungal pathogen Leptosphaeria maculans, is determined by both race-specific resistance (R) genes and quantitative resistance loci (QTL), or adult-plant resistance (APR). While the introgression of R genes into breeding material is relatively simple, QTL are often detected sporadically, making them harder to capture in breeding programs. For the effective deployment of APR in crop varieties, resistance QTL need to have a reliable influence on phenotype in multiple environments and be well defined genetically to enable marker-assisted selection (MAS). RESULTS Doubled-haploid populations produced from the susceptible B. napus variety Topas and APR varieties AG-Castle and AV-Sapphire were analysed for resistance to blackleg in two locations over 3 and 4 years, respectively. Three stable QTL were detected in each population, with two loci appearing to be common to both APR varieties. Physical delineation of three QTL regions was sufficient to identify candidate defense-related genes, including a cluster of cysteine-rich receptor-like kinases contained within a 49 gene QTL interval on chromosome A01. Individual L. maculans isolates were used to define the physical intervals for the race-specific R genes Rlm3 and Rlm4 and to identify QTL common to both field studies and the cotyledon resistance response. CONCLUSION Through multi-environment QTL analysis we have identified and delineated four significant and stable QTL suitable for MAS of quantitative blackleg resistance in B. napus, and identified candidate genes which potentially play a role in quantitative defense responses to L. maculans.
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Affiliation(s)
- Nicholas J. Larkan
- Saskatoon Research Centre, Agriculture and Agri-Food Canada, Saskatoon, SK S7N 0X2 Canada
- Armatus Genetics Inc, Saskatoon, SK S7W 0C9 Canada
| | - Harsh Raman
- Graham Centre for Agricultural Innovation (an alliance between Charles Sturt University and NSW Department of Primary Industries), Wagga Wagga Agricultural Institute, Wagga Wagga, NSW 2650 Australia
| | - Derek J. Lydiate
- Saskatoon Research Centre, Agriculture and Agri-Food Canada, Saskatoon, SK S7N 0X2 Canada
| | - Stephen J. Robinson
- Saskatoon Research Centre, Agriculture and Agri-Food Canada, Saskatoon, SK S7N 0X2 Canada
| | - Fengqun Yu
- Saskatoon Research Centre, Agriculture and Agri-Food Canada, Saskatoon, SK S7N 0X2 Canada
| | - Denise M. Barbulescu
- Department of Economic Development, Jobs, Transport and Resources, Grains Innovation Park, Horsham, VIC 3400 Australia
| | - Rosy Raman
- Graham Centre for Agricultural Innovation (an alliance between Charles Sturt University and NSW Department of Primary Industries), Wagga Wagga Agricultural Institute, Wagga Wagga, NSW 2650 Australia
| | - David J. Luckett
- Graham Centre for Agricultural Innovation (an alliance between Charles Sturt University and NSW Department of Primary Industries), Wagga Wagga Agricultural Institute, Wagga Wagga, NSW 2650 Australia
| | - Wayne Burton
- Department of Economic Development, Jobs, Transport and Resources, Grains Innovation Park, Horsham, VIC 3400 Australia
- Seednet Australia, Golf Course Road, Horsham, VIC 3402 Australia
| | - Neil Wratten
- Graham Centre for Agricultural Innovation (an alliance between Charles Sturt University and NSW Department of Primary Industries), Wagga Wagga Agricultural Institute, Wagga Wagga, NSW 2650 Australia
| | - Philip A. Salisbury
- Department of Economic Development, Jobs, Transport and Resources, Centre for AgriBioscience, La Trobe University, Bundoora, VIC 3083 Australia
- Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Melbourne, VIC 3010 Australia
| | - S. Roger Rimmer
- Saskatoon Research Centre, Agriculture and Agri-Food Canada, Saskatoon, SK S7N 0X2 Canada
| | - M. Hossein Borhan
- Saskatoon Research Centre, Agriculture and Agri-Food Canada, Saskatoon, SK S7N 0X2 Canada
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Gao N, Wadhwani P, Mühlhäuser P, Liu Q, Riemann M, Ulrich AS, Nick P. An antifungal protein from Ginkgo biloba binds actin and can trigger cell death. PROTOPLASMA 2016; 253:1159-74. [PMID: 26315821 DOI: 10.1007/s00709-015-0876-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Accepted: 08/17/2015] [Indexed: 06/04/2023]
Abstract
Ginkbilobin is a short antifungal protein that had been purified and cloned from the seeds of the living fossil Ginkgo biloba. Homologues of this protein can be detected in all seed plants and the heterosporic fern Selaginella and are conserved with respect to domain structures, peptide motifs, and specific cysteine signatures. To get insight into the cellular functions of these conserved motifs, we expressed green fluorescent protein fusions of full-length and truncated ginkbilobin in tobacco BY-2 cells. We show that the signal peptide confers efficient secretion of ginkbilobin. When this signal peptide is either cleaved or masked, ginkbilobin binds and visualizes the actin cytoskeleton. This actin-binding activity of ginkbilobin is mediated by a specific subdomain just downstream of the signal peptide, and this subdomain can also coassemble with actin in vitro. Upon stable overexpression of this domain, we observe a specific delay in premitotic nuclear positioning indicative of a reduced dynamicity of actin. To elucidate the cellular response to the binding of this subdomain to actin, we use chemical engineering based on synthetic peptides comprising different parts of the actin-binding subdomain conjugated with the cell-penetrating peptide BP100 and with rhodamine B as a fluorescent reporter. Binding of this synthetic construct to actin efficiently induces programmed cell death. We discuss these findings in terms of a working model, where ginkbilobin can activate actin-dependent cell death.
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Affiliation(s)
- Ningning Gao
- Molecular Cell Biology, Botanical Institute and DFG-Center of Functional Nanostructures (CFN), Karlsruhe Institute of Technology (KIT), Kaiserstr. 2, 76128, Karlsruhe, Germany
| | - Parvesh Wadhwani
- Institute for Biological Interfaces (IBG-2), KIT, P.O. Box 3640, 76021, Karlsruhe, Germany
| | - Philipp Mühlhäuser
- Institute for Biological Interfaces (IBG-2), KIT, P.O. Box 3640, 76021, Karlsruhe, Germany
| | - Qiong Liu
- Molecular Cell Biology, Botanical Institute and DFG-Center of Functional Nanostructures (CFN), Karlsruhe Institute of Technology (KIT), Kaiserstr. 2, 76128, Karlsruhe, Germany
| | - Michael Riemann
- Molecular Cell Biology, Botanical Institute and DFG-Center of Functional Nanostructures (CFN), Karlsruhe Institute of Technology (KIT), Kaiserstr. 2, 76128, Karlsruhe, Germany
| | - Anne S Ulrich
- Institute for Biological Interfaces (IBG-2), KIT, P.O. Box 3640, 76021, Karlsruhe, Germany
- Institute of Organic Chemistry and CFN, KIT, Fritz-Haber-Weg 6, 76131, Karlsruhe, Germany
| | - Peter Nick
- Molecular Cell Biology, Botanical Institute and DFG-Center of Functional Nanostructures (CFN), Karlsruhe Institute of Technology (KIT), Kaiserstr. 2, 76128, Karlsruhe, Germany.
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Transcriptome analysis of genes related to resistance against powdery mildew in wheat-Thinopyrum alien addition disomic line germplasm SN6306. Gene 2016; 590:5-17. [PMID: 27265028 DOI: 10.1016/j.gene.2016.06.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Revised: 05/02/2016] [Accepted: 06/01/2016] [Indexed: 11/21/2022]
Abstract
Wheat powdery mildew, which is mainly caused by Blumeria graminis f. sp. tritici (Bgt), seriously damages wheat production. The wheat-Thinopyrum intermedium alien addition disomic line germplasm SN6306, being one of the important sources of genes for wheat resistance, is highly resistant to Bgt E09 and to many other powdery mildew physiological races. However, knowledge on the resistance mechanism of SN6306 remains limited. Our study employed high-throughput RNA sequencing based on next-generation sequencing technology (Illumina) to obtain an overview of the transcriptome characteristics of SN6306 and its parent wheat Yannong 15 (YN15) during Bgt infection. The sequencing generated 104,773 unigenes, 9909 of which showed varied expression levels. Among the 9909 unigenes, 1678 unigenes showed 0 reads in YN15. The expression levels in Bgt-inoculated SN6306 and YN15 of exactly 39 unigenes that showed 0 or considerably low reads in YN15 were validated to identify the genes involved in Bgt resistance. Among the 39 unigenes, 12 unigenes were upregulated in SN6306 by 3-45 times. These unigenes mainly encoded kinase, synthase, proteases, and signal transduction proteins, which may play an important role in the resistance against Bgt. To confirm whether the unigenes that showed 0 reads in YN15 are really unique to SN6306, 8 unigenes were cloned and sequenced. Results showed that the selected unigenes are more similar to SN6306 and Th. intermedium than to the wheat cultivar YN15. The sequencing results further confirmed that the unigenes showing 0 reads in YN15 are unique to SN6306 and are most likely derived from Th. intermedium (Host) Nevski. Thus, the genes from Th. intermedium most probably conferred the resistance of SN6306 to Bgt.
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Li W, Liu Y, Wang J, He M, Zhou X, Yang C, Yuan C, Wang J, Chern M, Yin J, Chen W, Ma B, Wang Y, Qin P, Li S, Ronald P, Chen X. The durably resistant rice cultivar Digu activates defence gene expression before the full maturation of Magnaporthe oryzae appressorium. MOLECULAR PLANT PATHOLOGY 2016; 17:354-68. [PMID: 26095454 PMCID: PMC6638526 DOI: 10.1111/mpp.12286] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Rice blast caused by the fungal pathogen Magnaporthe oryzae is one of the most destructive diseases worldwide. Although the rice-M. oryzae interaction has been studied extensively, the early molecular events that occur in rice before full maturation of the appressorium during M. oryzae invasion are unknown. Here, we report a comparative transcriptomics analysis of the durably resistant rice variety Digu and the susceptible rice variety Lijiangxintuanheigu (LTH) in response to infection by M. oryzae (5, 10 and 20 h post-inoculation, prior to full development of the appressorium). We found that the transcriptional responses differed significantly between these two rice varieties. Gene ontology and pathway analyses revealed that many biological processes, including extracellular recognition and biosynthesis of antioxidants, terpenes and hormones, were specifically activated in Digu shortly after infection. Forty-eight genes encoding receptor kinases (RKs) were significantly differentially regulated by M. oryzae infection in Digu. One of these genes, LOC_Os08g10300, encoding a leucine-rich repeat RK from the LRR VIII-2 subfamily, conferred enhanced resistance to M. oryzae when overexpressed in rice. Our study reveals that a multitude of molecular events occur in the durably resistant rice Digu before the full maturation of the appressorium after M. oryzae infection and that membrane-associated RKs play important roles in the early response.
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Affiliation(s)
- Weitao Li
- Rice Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- Key Laboratory of Major Crop Diseases, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Ya Liu
- Rice Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- Key Laboratory of Major Crop Diseases, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Jing Wang
- Rice Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- Key Laboratory of Major Crop Diseases, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Min He
- Rice Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- Key Laboratory of Major Crop Diseases, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Xiaogang Zhou
- Rice Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- Key Laboratory of Major Crop Diseases, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Chao Yang
- Rice Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- Key Laboratory of Major Crop Diseases, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Can Yuan
- Rice Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- Key Laboratory of Major Crop Diseases, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Jichun Wang
- Rice Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- Key Laboratory of Major Crop Diseases, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Mawsheng Chern
- Department of Plant Pathology and the Genome Center, University of California, Davis, CA, 95616, USA
| | - Junjie Yin
- Rice Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- Key Laboratory of Major Crop Diseases, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Weilan Chen
- Rice Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- Key Laboratory of Major Crop Diseases, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Bingtian Ma
- Rice Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- Key Laboratory of Major Crop Diseases, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Yuping Wang
- Rice Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- Key Laboratory of Major Crop Diseases, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- Collaborative Innovation Center for Hybrid Rice in Yangtze River Basin at Sichuan, Chengdu, Sichuan, 611130, China
| | - Peng Qin
- Rice Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- Key Laboratory of Major Crop Diseases, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
| | - Shigui Li
- Rice Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- Key Laboratory of Major Crop Diseases, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- Collaborative Innovation Center for Hybrid Rice in Yangtze River Basin at Sichuan, Chengdu, Sichuan, 611130, China
| | - Pamela Ronald
- Department of Plant Pathology and the Genome Center, University of California, Davis, CA, 95616, USA
| | - Xuewei Chen
- Rice Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- Key Laboratory of Major Crop Diseases, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- State Key Laboratory of Hybrid Rice, Sichuan Agricultural University, Chengdu, Sichuan, 611130, China
- Collaborative Innovation Center for Hybrid Rice in Yangtze River Basin at Sichuan, Chengdu, Sichuan, 611130, China
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Xu X, Yu T, Xu R, Shi Y, Lin X, Xu Q, Qi X, Weng Y, Chen X. Fine mapping of a dominantly inherited powdery mildew resistance major-effect QTL, Pm1.1, in cucumber identifies a 41.1 kb region containing two tandemly arrayed cysteine-rich receptor-like protein kinase genes. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2016; 129:507-16. [PMID: 26660669 DOI: 10.1007/s00122-015-2644-4] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 11/24/2015] [Indexed: 05/09/2023]
Abstract
A dominantly inherited major-effect QTL for powdery mildew resistance in cucumber was fine mapped. Two tandemly arrayed cysteine-rich receptor-like protein kinase genes were identified as the most possible candidates. Powdery mildew (PM) is one of the most severe fungal diseases of cucumber (Cucumis sativus L.) and other cucurbit crops, but the molecular genetic mechanisms of powdery mildew resistance in cucurbits are still poorly understood. In this study, through marker-assisted backcrossing with an elite cucumber inbred line, D8 (PM susceptible), we developed a single-segment substitution line, SSSL0.7, carrying 95 kb fragment from PM resistance donor, Jin5-508, that was defined by two microsatellite markers, SSR16472 and SSR16881. A segregating population with 3600 F2 plants was developed from the SSSL0.7 × D8 mating; segregation analysis confirmed a dominantly inherited major-effect QTL, Pm1.1 in cucumber chromosome 1 underlying PM resistance in SSSL0.7. New molecular markers were developed through exploring the next generation resequenced genomes of Jin5-508 and D8. Linkage analysis and QTL mapping in a subset of the F2 plants delimited the Pm1.1 locus into a 41.1 kb region, in which eight genes were predicted. Comparative gene expression analysis revealed that two concatenated genes, Csa1M064780 and Csa1M064790 encoding the same function of a cysteine-rich receptor-like protein kinase, were the most likely candidate genes. GFP fusion protein-aided subcellular localization indicated that both candidate genes were located in the plasma membrane, but Csa1M064780 was also found in the nucleus. This is the first report of dominantly inherited PM resistance in cucumber. Results of this study will provide new insights into understanding the phenotypic and genetic mechanisms of PM resistance in cucumber. This work should also facilitate marker-assisted selection in cucumber breeding for PM resistance.
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Affiliation(s)
- Xuewen Xu
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Ting Yu
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Ruixue Xu
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Yang Shi
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Xiaojian Lin
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Qiang Xu
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Xiaohua Qi
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, Jiangsu, China
| | - Yiqun Weng
- USDA-ARS Vegetable Crops Research Unit, Horticulture Department, University of Wisconsin, Madison, WI, 53706, USA.
| | - Xuehao Chen
- School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, 225009, Jiangsu, China.
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Yogendra KN, Kumar A, Sarkar K, Li Y, Pushpa D, Mosa KA, Duggavathi R, Kushalappa AC. Transcription factor StWRKY1 regulates phenylpropanoid metabolites conferring late blight resistance in potato. JOURNAL OF EXPERIMENTAL BOTANY 2015; 66:7377-89. [PMID: 26417019 PMCID: PMC4765800 DOI: 10.1093/jxb/erv434] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Quantitative resistance is polygenically controlled and durable, but the underlying molecular and biochemical mechanisms are poorly understood. Secondary cell wall thickening is a critical process in quantitative resistance, regulated by transcriptional networks. This paper provides compelling evidence on the functionality of StWRKY1 transcription factor, in a compatible interaction of potato-Phytophthora infestans, to extend our knowledge on the regulation of the metabolic pathway genes leading to strengthening the secondary cell wall. A metabolomics approach was used to identify resistance-related metabolites belonging to the phenylpropanoid pathway and their biosynthetic genes regulated by StWRKY1. The StWRKY1 gene in resistant potato was silenced to decipher its role in the regulation of phenylpropanoid pathway genes to strengthen the secondary cell wall. Sequencing of the promoter region of StWRKY1 in susceptible genotypes revealed the absence of heat shock elements (HSEs). Simultaneous induction of both the heat shock protein (sHSP17.8) and StWRKY1 following pathogen invasion enables functioning of the latter to interact with the HSE present in the resistant StWRKY1 promoter region. EMSA and luciferase transient expression assays further revealed direct binding of StWRKY1 to promoters of hydroxycinnamic acid amide (HCAA) biosynthetic genes encoding 4-coumarate:CoA ligase and tyramine hydroxycinnamoyl transferase. Silencing of the StWRKY1 gene was associated with signs of reduced late blight resistance by significantly increasing the pathogen biomass and decreasing the abundance of HCAAs. This study provides convincing evidence on the role of StWRKY1 in the regulation of downstream genes to biosynthesize HCAAs, which are deposited to reinforce secondary cell walls.
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Affiliation(s)
| | - Arun Kumar
- Department of Plant Science, McGill University, Ste Anne de Bellevue, Quebec, Canada
| | - Kobir Sarkar
- Department of Plant Science, McGill University, Ste Anne de Bellevue, Quebec, Canada
| | - Yunliang Li
- Department of Plant Science, McGill University, Ste Anne de Bellevue, Quebec, Canada
| | - Doddaraju Pushpa
- Department of Plant Science, McGill University, Ste Anne de Bellevue, Quebec, Canada
| | - Kareem A Mosa
- Department of Plant Science, McGill University, Ste Anne de Bellevue, Quebec, Canada
| | - Raj Duggavathi
- Department of Animal Science, McGill University, Ste Anne de Bellevue, Quebec, Canada
| | - Ajjamada C Kushalappa
- Department of Plant Science, McGill University, Ste Anne de Bellevue, Quebec, Canada
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Bourdais G, Burdiak P, Gauthier A, Nitsch L, Salojärvi J, Rayapuram C, Idänheimo N, Hunter K, Kimura S, Merilo E, Vaattovaara A, Oracz K, Kaufholdt D, Pallon A, Anggoro DT, Glów D, Lowe J, Zhou J, Mohammadi O, Puukko T, Albert A, Lang H, Ernst D, Kollist H, Brosché M, Durner J, Borst JW, Collinge DB, Karpiński S, Lyngkjær MF, Robatzek S, Wrzaczek M, Kangasjärvi J. Large-Scale Phenomics Identifies Primary and Fine-Tuning Roles for CRKs in Responses Related to Oxidative Stress. PLoS Genet 2015; 11:e1005373. [PMID: 26197346 PMCID: PMC4511522 DOI: 10.1371/journal.pgen.1005373] [Citation(s) in RCA: 128] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Accepted: 06/19/2015] [Indexed: 12/20/2022] Open
Abstract
Cysteine-rich receptor-like kinases (CRKs) are transmembrane proteins characterized by the presence of two domains of unknown function 26 (DUF26) in their ectodomain. The CRKs form one of the largest groups of receptor-like protein kinases in plants, but their biological functions have so far remained largely uncharacterized. We conducted a large-scale phenotyping approach of a nearly complete crk T-DNA insertion line collection showing that CRKs control important aspects of plant development and stress adaptation in response to biotic and abiotic stimuli in a non-redundant fashion. In particular, the analysis of reactive oxygen species (ROS)-related stress responses, such as regulation of the stomatal aperture, suggests that CRKs participate in ROS/redox signalling and sensing. CRKs play general and fine-tuning roles in the regulation of stomatal closure induced by microbial and abiotic cues. Despite their great number and high similarity, large-scale phenotyping identified specific functions in diverse processes for many CRKs and indicated that CRK2 and CRK5 play predominant roles in growth regulation and stress adaptation, respectively. As a whole, the CRKs contribute to specificity in ROS signalling. Individual CRKs control distinct responses in an antagonistic fashion suggesting future potential for using CRKs in genetic approaches to improve plant performance and stress tolerance.
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Affiliation(s)
- Gildas Bourdais
- The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom
| | - Paweł Burdiak
- Department of Plant Genetics, Breeding and Plant Biotechnology, Warsaw University of Life Sciences-SGGW, Warsaw, Poland
| | - Adrien Gauthier
- Department of Biosciences, Plant Biology, University of Helsinki, Helsinki, Finland
| | - Lisette Nitsch
- Laboratory of Biochemistry and Microspectroscopy Center, Wageningen University, Wageningen, The Netherlands
| | - Jarkko Salojärvi
- Department of Biosciences, Plant Biology, University of Helsinki, Helsinki, Finland
| | - Channabasavangowda Rayapuram
- Department of Plant and Environmental Sciences and Copenhagen Plant Science Center, University of Copenhagen, Frederiksberg, Denmark
| | - Niina Idänheimo
- Department of Biosciences, Plant Biology, University of Helsinki, Helsinki, Finland
| | - Kerri Hunter
- Department of Biosciences, Plant Biology, University of Helsinki, Helsinki, Finland
| | - Sachie Kimura
- Department of Biosciences, Plant Biology, University of Helsinki, Helsinki, Finland
| | - Ebe Merilo
- Institute of Technology, University of Tartu, Tartu, Estonia
| | - Aleksia Vaattovaara
- Department of Biosciences, Plant Biology, University of Helsinki, Helsinki, Finland
| | - Krystyna Oracz
- Department of Plant Genetics, Breeding and Plant Biotechnology, Warsaw University of Life Sciences-SGGW, Warsaw, Poland
- Department of Plant Physiology, Warsaw University of Life Sciences-SGGW, Warsaw, Poland
| | - David Kaufholdt
- Department of Biosciences, Plant Biology, University of Helsinki, Helsinki, Finland
| | - Andres Pallon
- Institute of Technology, University of Tartu, Tartu, Estonia
| | - Damar Tri Anggoro
- The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom
| | - Dawid Glów
- Department of Plant Genetics, Breeding and Plant Biotechnology, Warsaw University of Life Sciences-SGGW, Warsaw, Poland
| | - Jennifer Lowe
- The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom
| | - Ji Zhou
- The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom
| | - Omid Mohammadi
- Department of Biosciences, Plant Biology, University of Helsinki, Helsinki, Finland
| | - Tuomas Puukko
- Department of Biosciences, Plant Biology, University of Helsinki, Helsinki, Finland
| | - Andreas Albert
- Research Unit Environmental Simulation, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Hans Lang
- Research Unit Environmental Simulation, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Dieter Ernst
- Institute of Biochemical Plant Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Hannes Kollist
- Institute of Technology, University of Tartu, Tartu, Estonia
| | - Mikael Brosché
- Department of Biosciences, Plant Biology, University of Helsinki, Helsinki, Finland
- Institute of Technology, University of Tartu, Tartu, Estonia
| | - Jörg Durner
- Institute of Biochemical Plant Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Jan Willem Borst
- Laboratory of Biochemistry and Microspectroscopy Center, Wageningen University, Wageningen, The Netherlands
| | - David B. Collinge
- Department of Plant and Environmental Sciences and Copenhagen Plant Science Center, University of Copenhagen, Frederiksberg, Denmark
| | - Stanisław Karpiński
- Department of Plant Genetics, Breeding and Plant Biotechnology, Warsaw University of Life Sciences-SGGW, Warsaw, Poland
| | - Michael F. Lyngkjær
- Department of Plant and Environmental Sciences and Copenhagen Plant Science Center, University of Copenhagen, Frederiksberg, Denmark
| | - Silke Robatzek
- The Sainsbury Laboratory, Norwich Research Park, Norwich, United Kingdom
| | - Michael Wrzaczek
- Department of Biosciences, Plant Biology, University of Helsinki, Helsinki, Finland
| | - Jaakko Kangasjärvi
- Department of Biosciences, Plant Biology, University of Helsinki, Helsinki, Finland
- Distinguished Scientist Fellowship Program, College of Science, King Saud University, Riyadh, Saudi Arabia
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Burdiak P, Rusaczonek A, Witoń D, Głów D, Karpiński S. Cysteine-rich receptor-like kinase CRK5 as a regulator of growth, development, and ultraviolet radiation responses in Arabidopsis thaliana. JOURNAL OF EXPERIMENTAL BOTANY 2015; 66:3325-37. [PMID: 25969551 PMCID: PMC4449547 DOI: 10.1093/jxb/erv143] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
In plants, receptor-like protein kinases play essential roles in signal transduction by recognizing extracellular stimuli and activating the downstream signalling pathways. Cysteine-rich receptor-like kinases (CRKs) constitute a large subfamily of receptor-like protein kinases, with 44 members in Arabidopsis thaliana. They are distinguished by the novel C-X8-C-X2-C motif (DUF26) in the extracellular domains. One of them, CRK5, is an important component of the biochemical machinery involved in the regulation of essential physiological processes. Functional characterization of crk5 mutant plants showed their clear phenotype, manifested by impaired stomatal conductance and accelerated senescence. This phenotype correlated with accumulation of reactive oxygen species, higher foliar levels of ethylene and salicylic acid, and increased transcript abundance for genes associated with signalling pathways corresponding to these hormones. Moreover, the crk5 plants displayed enhanced cell death and oxidative damage in response to ultraviolet radiation. Complementation of CRK5 mutation managed to recover the wild-type phenotype, indicating an essential role of this gene in the regulation of growth, development, and acclimatory responses.
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Affiliation(s)
- Paweł Burdiak
- Department of Plant Genetics, Breeding and Biotechnology, Faculty of Horticulture, Biotechnology and Landscape Architecture, Warsaw University of Life Sciences - SGGW, Nowoursynowska 159, 02-776 Warsaw, Poland
| | - Anna Rusaczonek
- Department of Plant Genetics, Breeding and Biotechnology, Faculty of Horticulture, Biotechnology and Landscape Architecture, Warsaw University of Life Sciences - SGGW, Nowoursynowska 159, 02-776 Warsaw, Poland
| | - Damian Witoń
- Department of Plant Genetics, Breeding and Biotechnology, Faculty of Horticulture, Biotechnology and Landscape Architecture, Warsaw University of Life Sciences - SGGW, Nowoursynowska 159, 02-776 Warsaw, Poland
| | - Dawid Głów
- Department of Plant Genetics, Breeding and Biotechnology, Faculty of Horticulture, Biotechnology and Landscape Architecture, Warsaw University of Life Sciences - SGGW, Nowoursynowska 159, 02-776 Warsaw, Poland
| | - Stanisław Karpiński
- Department of Plant Genetics, Breeding and Biotechnology, Faculty of Horticulture, Biotechnology and Landscape Architecture, Warsaw University of Life Sciences - SGGW, Nowoursynowska 159, 02-776 Warsaw, Poland
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Sanabria NM, Huang JC, Dubery IA. Self/nonself perception in plants in innate immunity and defense. SELF NONSELF 2014; 1:40-54. [PMID: 21559176 DOI: 10.4161/self.1.1.10442] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2009] [Revised: 10/27/2009] [Accepted: 10/27/2009] [Indexed: 11/19/2022]
Abstract
The ability to distinguish 'self' from 'nonself' is the most fundamental aspect of any immune system. The evolutionary solution in plants to the problems of perceiving and responding to pathogens involves surveillance of nonself, damaged-self and altered-self as danger signals. This is reflected in basal resistance or non-host resistance, which is the innate immune response that protects plants against the majority of pathogens. In the case of surveillance of nonself, plants utilize receptor-like proteins or -kinases (RLP/Ks) as pattern recognition receptors (PRRs), which can detect conserved pathogen/microbe-associated molecular pattern (P/MAMP) molecules. P/MAMP detection serves as an early warning system for the presence of a wide range of potential pathogens and the timely activation of plant defense mechanisms. However, adapted microbes express a suite of effector proteins that often interfere or act as suppressors of these defenses. In response, plants have evolved a second line of defense that includes intracellular nucleotide binding leucine-rich repeat (NB-LRR)-containing resistance proteins, which recognize isolate-specific pathogen effectors once the cell wall has been compromised. This host-immunity acts within the species level and is controlled by polymorphic host genes, where resistance protein-mediated activation of defense is based on an 'altered-self' recognition mechanism.
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Affiliation(s)
- Natasha M Sanabria
- Department of Biochemistry; University of Johannesburg; Auckland Park, South Africa
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Miyakawa T, Hatano KI, Miyauchi Y, Suwa YI, Sawano Y, Tanokura M. A secreted protein with plant-specific cysteine-rich motif functions as a mannose-binding lectin that exhibits antifungal activity. PLANT PHYSIOLOGY 2014; 166:766-78. [PMID: 25139159 PMCID: PMC4213107 DOI: 10.1104/pp.114.242636] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2014] [Accepted: 08/14/2014] [Indexed: 05/19/2023]
Abstract
Plants have a variety of mechanisms for defending against plant pathogens and tolerating environmental stresses such as drought and high salinity. Ginkbilobin2 (Gnk2) is a seed storage protein in gymnosperm that possesses antifungal activity and a plant-specific cysteine-rich motif (domain of unknown function26 [DUF26]). The Gnk2-homologous sequence is also observed in an extracellular region of cysteine-rich repeat receptor-like kinases that function in response to biotic and abiotic stresses. Here, we report the lectin-like molecular function of Gnk2 and the structural basis of its monosaccharide recognition. Nuclear magnetic resonance experiments showed that mannan was the only yeast (Saccharomyces cerevisiae) cell wall polysaccharide that interacted with Gnk2. Gnk2 also interacted with mannose, a building block of mannan, with a specificity that was similar to those of mannose-binding legume lectins, by strictly recognizing the configuration of the hydroxy group at the C4 position of the monosaccharide. The crystal structure of Gnk2 in complex with mannose revealed that three residues (asparagine-11, arginine-93, and glutamate-104) recognized mannose by hydrogen bonds, which defined the carbohydrate-binding specificity. These interactions were directly related to the ability of Gnk2 to inhibit the growth of fungi, including the plant pathogenic Fusarium spp., which were disrupted by mutation of arginine-93 or the presence of yeast mannan in the assay system. In addition, Gnk2 did not inhibit the growth of a yeast mutant strain lacking the α1,2-linked mannose moiety. These results provide insights into the molecular basis of the DUF26 protein family.
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Affiliation(s)
- Takuya Miyakawa
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan (T.M., Y.M., Y.Su., M.T.);Division of Molecular Science, Faculty of Science and Technology, Gunma University, Kiryu, Gunma 376-8515, Japan (K.H.); andLaboratory of Chemistry, College of Liberal Arts and Sciences, Tokyo Medical and Dental University, Ichikawa-shi, Chiba 272-0827, Japan (Y.Sa.)
| | - Ken-ichi Hatano
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan (T.M., Y.M., Y.Su., M.T.);Division of Molecular Science, Faculty of Science and Technology, Gunma University, Kiryu, Gunma 376-8515, Japan (K.H.); andLaboratory of Chemistry, College of Liberal Arts and Sciences, Tokyo Medical and Dental University, Ichikawa-shi, Chiba 272-0827, Japan (Y.Sa.)
| | - Yumiko Miyauchi
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan (T.M., Y.M., Y.Su., M.T.);Division of Molecular Science, Faculty of Science and Technology, Gunma University, Kiryu, Gunma 376-8515, Japan (K.H.); andLaboratory of Chemistry, College of Liberal Arts and Sciences, Tokyo Medical and Dental University, Ichikawa-shi, Chiba 272-0827, Japan (Y.Sa.)
| | - You-ichi Suwa
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan (T.M., Y.M., Y.Su., M.T.);Division of Molecular Science, Faculty of Science and Technology, Gunma University, Kiryu, Gunma 376-8515, Japan (K.H.); andLaboratory of Chemistry, College of Liberal Arts and Sciences, Tokyo Medical and Dental University, Ichikawa-shi, Chiba 272-0827, Japan (Y.Sa.)
| | - Yoriko Sawano
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan (T.M., Y.M., Y.Su., M.T.);Division of Molecular Science, Faculty of Science and Technology, Gunma University, Kiryu, Gunma 376-8515, Japan (K.H.); andLaboratory of Chemistry, College of Liberal Arts and Sciences, Tokyo Medical and Dental University, Ichikawa-shi, Chiba 272-0827, Japan (Y.Sa.)
| | - Masaru Tanokura
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, University of Tokyo, Bunkyo-ku, Tokyo 113-8657, Japan (T.M., Y.M., Y.Su., M.T.);Division of Molecular Science, Faculty of Science and Technology, Gunma University, Kiryu, Gunma 376-8515, Japan (K.H.); andLaboratory of Chemistry, College of Liberal Arts and Sciences, Tokyo Medical and Dental University, Ichikawa-shi, Chiba 272-0827, Japan (Y.Sa.)
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Identification of a pollen-specific gene, SlCRK1 (RFK2) in tomato. Genes Genomics 2014. [DOI: 10.1007/s13258-013-0168-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Abstract
Reactive Oxygen Species (ROS) are ubiquitous metabolites in all aerobic organisms. Traditionally ROS have been considered as harmful, accidental byproducts of cellular functions involving electron transport chains or electron transfer. However, it is now recognized that controlled production of ROS has significant signaling functions, for example, in pathogen defense, in the regulation of stomatal closure, or in cell-to-cell signaling. ROS formation in subcellular compartments is critical to act as “alarm” signal in the response to stress, and the concept of ROS as primarily signaling substances has emerged. The involvement of ROS in several developmental and inducible processes implies that there must be coordinated function of signaling network(s) that govern ROS responses and subsequent processes. The air pollutant ozone can be used as a useful tool to elucidate the function of apoplastic ROS: O3 degrades in cell wall into various ROS which are interpreted as ROS with signaling function inducing downstream responses. We have used ozone as a tool in mutant screens and transcript profiling-reverse genetics to identify genes involved in processes related to the signaling function of ROS. We review here our recent findings in the elucidation of apoplastic ROS sensing, signaling, and interaction with various symplastic components.
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Idänheimo N, Gauthier A, Salojärvi J, Siligato R, Brosché M, Kollist H, Mähönen AP, Kangasjärvi J, Wrzaczek M. The Arabidopsis thaliana cysteine-rich receptor-like kinases CRK6 and CRK7 protect against apoplastic oxidative stress. Biochem Biophys Res Commun 2014; 445:457-62. [PMID: 24530916 DOI: 10.1016/j.bbrc.2014.02.013] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 02/05/2014] [Indexed: 11/16/2022]
Abstract
Receptor-like kinases are important regulators of many different processes in plants. Despite their large number only a few have been functionally characterized. One of the largest subgroups of receptor-like kinases in Arabidopsis is the cysteine-rich receptor like kinases (CRKs). High sequence similarity among the CRKs has been suggested as major cause for functional redundancy. The genomic localization of CRK genes in back-to-back repeats has made their characterization through mutant analysis unpractical. Expression profiling has linked the CRKs with reactive oxygen species, important signaling molecules in plants. Here we have investigated the role of two CRKs, CRK6 and CRK7, and analyzed their role in extracellular ROS signaling. CRK6 and CRK7 are active protein kinases with differential preference for divalent cations. Our results suggest that CRK7 is involved in mediating the responses to extracellular but not chloroplastic ROS production.
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Affiliation(s)
- Niina Idänheimo
- Division of Plant Biology, Department of Biosciences, University of Helsinki, FI-00014 Helsinki, Finland.
| | - Adrien Gauthier
- Division of Plant Biology, Department of Biosciences, University of Helsinki, FI-00014 Helsinki, Finland.
| | - Jarkko Salojärvi
- Division of Plant Biology, Department of Biosciences, University of Helsinki, FI-00014 Helsinki, Finland.
| | - Riccardo Siligato
- Division of Plant Biology, Department of Biosciences, University of Helsinki, FI-00014 Helsinki, Finland; Institute of Biotechnology, University of Helsinki, FI-00014 Helsinki, Finland.
| | - Mikael Brosché
- Division of Plant Biology, Department of Biosciences, University of Helsinki, FI-00014 Helsinki, Finland; Institute of Technology, University of Tartu, Tartu 50411, Estonia.
| | - Hannes Kollist
- Institute of Technology, University of Tartu, Tartu 50411, Estonia.
| | - Ari Pekka Mähönen
- Division of Plant Biology, Department of Biosciences, University of Helsinki, FI-00014 Helsinki, Finland; Institute of Biotechnology, University of Helsinki, FI-00014 Helsinki, Finland.
| | - Jaakko Kangasjärvi
- Division of Plant Biology, Department of Biosciences, University of Helsinki, FI-00014 Helsinki, Finland.
| | - Michael Wrzaczek
- Division of Plant Biology, Department of Biosciences, University of Helsinki, FI-00014 Helsinki, Finland.
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Li H, Chen S, Song A, Wang H, Fang W, Guan Z, Jiang J, Chen F. RNA-Seq derived identification of differential transcription in the chrysanthemum leaf following inoculation with Alternaria tenuissima. BMC Genomics 2014; 15:9. [PMID: 24387266 PMCID: PMC3890596 DOI: 10.1186/1471-2164-15-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2013] [Accepted: 12/21/2013] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND A major production constraint on the important ornamental species chrysanthemum is black spot which is caused by the necrotrophic fungus Alternaria tenuissima. The molecular basis of host resistance to A. tenuissima has not been studied as yet in any detail. Here, high throughput sequencing was taken to characterize the transcriptomic response of the chrysanthemum leaf to A. tenuissima inoculation. RESULTS The transcriptomic data was acquired using RNA-Seq technology, based on the Illumina HiSeq™ 2000 platform. Four different libraries derived from two sets of leaves harvested from either inoculated or mock-inoculated plants were characterized. Over seven million clean reads were generated from each library, each corresponding to a coverage of >350,000 nt. About 70% of the reads could be mapped to a set of chrysanthemum unigenes. Read frequency was used as a measure of transcript abundance and therefore as an identifier of differential transcription in the four libraries. The differentially transcribed genes identified were involved in photosynthesis, pathogen recognition, reactive oxygen species generation, cell wall modification and phytohormone signalling; in addition, a number of varied transcription factors were identified. A selection of 23 of the genes was transcription-profiled using quantitative RT-PCR to validate the RNA-Seq output. CONCLUSIONS A substantial body of chrysanthemum transcriptomic sequence was generated, which led to a number of insights into the molecular basis of the host response to A. tenuissima infection. Although most of the differentially transcribed genes were up-regulated by the presence of the pathogen, those involved in photosynthesis were down-regulated.
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Affiliation(s)
- Huiyun Li
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Jiangsu Province Engineering Lab for Modern Facility Agriculture Technology and Equipment, Nanjing 210095, China
| | - Sumei Chen
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Aiping Song
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Haibin Wang
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Weimin Fang
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhiyong Guan
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Jiafu Jiang
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
| | - Fadi Chen
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Jiangsu Province Engineering Lab for Modern Facility Agriculture Technology and Equipment, Nanjing 210095, China
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De Storme N, Geelen D. Callose homeostasis at plasmodesmata: molecular regulators and developmental relevance. FRONTIERS IN PLANT SCIENCE 2014; 5:138. [PMID: 24795733 PMCID: PMC4001042 DOI: 10.3389/fpls.2014.00138] [Citation(s) in RCA: 115] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Accepted: 03/23/2014] [Indexed: 05/18/2023]
Abstract
Plasmodesmata are membrane-lined channels that are located in the plant cell wall and that physically interconnect the cytoplasm and the endoplasmic reticulum (ER) of adjacent cells. Operating as controllable gates, plasmodesmata regulate the symplastic trafficking of micro- and macromolecules, such as endogenous proteins [transcription factors (TFs)] and RNA-based signals (mRNA, siRNA, etc.), hence mediating direct cell-to-cell communication and long distance signaling. Besides this physiological role, plasmodesmata also form gateways through which viral genomes can pass, largely facilitating the pernicious spread of viral infections. Plasmodesmatal trafficking is either passive (e.g., diffusion) or active and responses both to developmental and environmental stimuli. In general, plasmodesmatal conductivity is regulated by the controlled build-up of callose at the plasmodesmatal neck, largely mediated by the antagonistic action of callose synthases (CalSs) and β-1,3-glucanases. Here, in this theory and hypothesis paper, we outline the importance of callose metabolism in PD SEL control, and highlight the main molecular factors involved. In addition, we also review other proteins that regulate symplastic PD transport, both in a developmental and stress-responsive framework, and discuss on their putative role in the modulation of PD callose turn-over. Finally, we hypothesize on the role of structural sterols in the regulation of (PD) callose deposition and outline putative mechanisms by which this regulation may occur.
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Affiliation(s)
| | - Danny Geelen
- *Correspondence: Danny Geelen, Laboratory for In Vitro Biology and Horticulture, Department of Plant Production, Faculty of Bioscience Engineering, University of Ghent, Coupure Links 653, 9000 Ghent, Belgium e-mail:
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Zhang X, Han X, Shi R, Yang G, Qi L, Wang R, Li G. Arabidopsis cysteine-rich receptor-like kinase 45 positively regulates disease resistance to Pseudomonas syringae. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2013; 73:383-91. [PMID: 24215930 DOI: 10.1016/j.plaphy.2013.10.024] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Accepted: 10/18/2013] [Indexed: 05/10/2023]
Abstract
Arabidopsis cysteine-rich receptor-like protein kinase 45 (CRK45) was found to be involved in ABA signaling in Arabidopsis thaliana previously. Here, we reported that it also positively regulates disease resistance. The CRK45 overexpression plants increased expression of the defense genes, and enhanced resistance to Pseudomonas syringae whereas the crk45 mutant were more sensitive to P. syringae and weakened expression of the defense genes, compared to the wild type. We also found that treatment with P. syringae leads to a declined expression of CRK45 in the npr1 mutant and the NahG transgenic plants. At the same time, significantly decreased expression of CRK45 transcript in the wrky70 mutant than that in the wild type was also detected. Our results suggested that CRK45 acted as a positive regulator in Arabidopsis disease resistance, and was regulated downstream of NPR1 and WRKY70 at the transcriptional level.
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Affiliation(s)
- Xiujuan Zhang
- College of Life Sciences, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, PR China; Inner Mongolia Institute of Biotechnology, Hohhot, Inner Mongolia 010070, PR China.
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De Cremer K, Mathys J, Vos C, Froenicke L, Michelmore RW, Cammue BPA, De Coninck B. RNAseq-based transcriptome analysis of Lactuca sativa infected by the fungal necrotroph Botrytis cinerea. PLANT, CELL & ENVIRONMENT 2013; 36:1992-2007. [PMID: 23534608 DOI: 10.1111/pce.12106] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Accepted: 03/20/2013] [Indexed: 05/23/2023]
Abstract
The fungal pathogen Botrytis cinerea establishes a necrotrophic interaction with its host plants, including lettuce (Lactuca sativa), causing it to wilt, collapse and eventually dry up and die, which results in serious economic losses. Global expression profiling using RNAseq and the newly sequenced lettuce genome identified a complex network of genes involved in the lettuce-B. cinerea interaction. The observed high number of differentially expressed genes allowed us to classify them according to the biological pathways in which they are implicated, generating a holistic picture. Most pronounced were the induction of the phenylpropanoid pathway and terpenoid biosynthesis, whereas photosynthesis was globally down-regulated at 48 h post-inoculation. Large-scale comparison with data available on the interaction of B. cinerea with the model plant Arabidopsis thaliana revealed both general and species-specific responses to infection with this pathogen. Surprisingly, expression analysis of selected genes could not detect significant systemic transcriptional alterations in lettuce leaves distant from the inoculation site. Additionally, we assessed the response of these lettuce genes to a biotrophic pathogen, Bremia lactucae, revealing that similar pathways are induced during compatible interactions of lettuce with necrotrophic and biotrophic pathogens.
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Affiliation(s)
- Kaat De Cremer
- Centre of Microbial and Plant Genetics, Katholieke Universiteit Leuven, Kasteelpark Arenberg 20, 3001, Heverlee, Belgium
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Yang K, Rong W, Qi L, Li J, Wei X, Zhang Z. Isolation and characterization of a novel wheat cysteine-rich receptor-like kinase gene induced by Rhizoctonia cerealis. Sci Rep 2013; 3:3021. [PMID: 24149340 PMCID: PMC3805973 DOI: 10.1038/srep03021] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 10/01/2013] [Indexed: 12/02/2022] Open
Abstract
Cysteine-rich receptor kinases (CRKs) belong to the receptor-like kinase family. Little is known about CRK genes in wheat. We isolated a wheat CRK gene TaCRK1 from Rhizoctonia cerealis-resistant wheat CI12633 based on a differentially expressed sequence identified by RNA-Sequencing (RNA-Seq) analysis. TaCRK1 was more highly expressed in CI12633 than in susceptible Wenmai 6. Transcription of TaCRK1 in wheat was induced in CI12633 after R. cerealis infection and exogenous abscisic acid (ABA) treatment. The deduced TaCRK1 protein contained a signal peptide, two DUF26 domains, a transmembrane domain, and a serine/threonine protein kinase domain. Transient expression of a green fluorescence protein fused with TaCRK1 in wheat and onion indicated that TaCRK1 may localize to plasma membranes. Characterization of TaCRK1 silencing induced by virus-mediated method in CI12633 showed that the downregulation of TaCRK1 transcript did not obviously impair resistance to R. cerealis. This study paves the way to further CRK research in wheat.
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Affiliation(s)
- Kun Yang
- The National Key Facility for Crop Gene Resources and Genetic Improvement, Key Laboratory of Biology and Genetic Improvement of Triticeae Crops, Ministry of Agriculture, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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Munné-Bosch S, Queval G, Foyer CH. The impact of global change factors on redox signaling underpinning stress tolerance. PLANT PHYSIOLOGY 2013; 161:5-19. [PMID: 23151347 PMCID: PMC3532280 DOI: 10.1104/pp.112.205690] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Accepted: 11/13/2012] [Indexed: 05/18/2023]
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Bricchi I, Bertea CM, Occhipinti A, Paponov IA, Maffei ME. Dynamics of membrane potential variation and gene expression induced by Spodoptera littoralis, Myzus persicae, and Pseudomonas syringae in Arabidopsis. PLoS One 2012; 7:e46673. [PMID: 23118859 PMCID: PMC3484130 DOI: 10.1371/journal.pone.0046673] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2012] [Accepted: 09/06/2012] [Indexed: 12/25/2022] Open
Abstract
Background Biotic stress induced by various herbivores and pathogens invokes plant responses involving different defense mechanisms. However, we do not know whether different biotic stresses share a common response or which signaling pathways are involved in responses to different biotic stresses. We investigated the common and specific responses of Arabidopsis thaliana to three biotic stress agents: Spodoptera littoralis, Myzus persicae, and the pathogen Pseudomonas syringae. Methodology/Principal Findings We used electrophysiology to determine the plasma membrane potential (Vm) and we performed a gene microarray transcriptome analysis on Arabidopsis upon either herbivory or bacterial infection. Vm depolarization was induced by insect attack; however, the response was much more rapid to S. littoralis (30 min −2 h) than to M. persicae (4–6 h). M. persicae differentially regulated almost 10-fold more genes than by S. littoralis with an opposite regulation. M. persicae modulated genes involved in flavonoid, fatty acid, hormone, drug transport and chitin metabolism. S. littoralis regulated responses to heat, transcription and ion transport. The latest Vm depolarization (16 h) was found for P. syringae. The pathogen regulated responses to salicylate, jasmonate and to microorganisms. Despite this late response, the number of genes differentially regulated by P. syringae was closer to those regulated by S. littoralis than by M. persicae. Conclusions/Significance Arabidopsis plasma membranes respond with a Vm depolarization at times depending on the nature of biotic attack which allow setting a time point for comparative genome-wide analysis. A clear relationship between Vm depolarization and gene expression was found. At Vm depolarization timing, M. persicae regulates a wider array of Arabidopsis genes with a clear and distinct regulation than S. littoralis. An almost completely opposite regulation was observed between the aphid and the pathogen, with the former suppressing and the latter activating Arabidopsis defense responses.
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Affiliation(s)
- Irene Bricchi
- Plant Physiology Unit, Department of Life Sciences and Systems Biology, Innovation Centre, University of Turin, Turin, Italy
| | - Cinzia M. Bertea
- Plant Physiology Unit, Department of Life Sciences and Systems Biology, Innovation Centre, University of Turin, Turin, Italy
| | - Andrea Occhipinti
- Plant Physiology Unit, Department of Life Sciences and Systems Biology, Innovation Centre, University of Turin, Turin, Italy
| | - Ivan A. Paponov
- Institut für Biologie II/Molecular Plant Physiology, Faculty of Biology, Albert-Ludwigs University of Freiburg, Freiburg, Germany
| | - Massimo E. Maffei
- Plant Physiology Unit, Department of Life Sciences and Systems Biology, Innovation Centre, University of Turin, Turin, Italy
- * E-mail:
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Reid DE, Hayashi S, Lorenc M, Stiller J, Edwards D, Gresshoff PM, Ferguson BJ. Identification of systemic responses in soybean nodulation by xylem sap feeding and complete transcriptome sequencing reveal a novel component of the autoregulation pathway. PLANT BIOTECHNOLOGY JOURNAL 2012; 10:680-9. [PMID: 22624681 DOI: 10.1111/j.1467-7652.2012.00706.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Establishment of the nitrogen-fixing nodulation symbiosis between legumes and rhizobia requires plant-wide reprogramming to allow infection and development of nodules. Nodulation is regulated principally via a mechanism called autoregulation of nodulation (AON). AON is dependent on shoot and root factors and is maintained by the nodulation autoregulation receptor kinase (NARK) in soybean. We developed a bioassay to detect root-derived signalling molecules in xylem sap of soybean plants which may function in AON. The bioassay involves feeding of xylem extracts via the cut hypocotyl of soybean seedlings and monitoring of molecular markers of AON in the leaf. Transcript abundance changes occurring in the leaf in response to feeding were used to determine the biological activity of the extracts. To identify transcript abundance changes that occur during AON, which may also be used in the bioassay, we used an RNA-seq-based transcriptomics approach. We identified changes in the leaves of bioassay plants fed with xylem extracts derived from either Bradyrhizobium japonicum-inoculated or uninoculated plants. Differential expression responses were detected for genes involved in jasmonic acid metabolism, pathogenesis and receptor kinase signalling. We identified an inoculation- and NARK-dependent candidate gene (GmUFD1a) that responds in both the bioassay and intact, inoculated plants. GmUFD1a is a component of the ubiquitin-dependent protein degradation pathway and provides new insight into the molecular responses occurring during AON. It may now also be used in our feeding bioassay as a molecular marker to assist in identifying the factors contributing to the systemic regulation of nodulation.
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Affiliation(s)
- Dugald E Reid
- Australian Research Council Centre of Excellence for Integrative Legume Research, School of Agriculture and Food Sciences, The University of Queensland, St. Lucia, Brisbane, Qld, Australia
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Dubery IA, Sanabria NM, Huang JC. Nonself Perception in Plant Innate Immunity. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2012; 738:79-107. [DOI: 10.1007/978-1-4614-1680-7_6] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Ederli L, Madeo L, Calderini O, Gehring C, Moretti C, Buonaurio R, Paolocci F, Pasqualini S. The Arabidopsis thaliana cysteine-rich receptor-like kinase CRK20 modulates host responses to Pseudomonas syringae pv. tomato DC3000 infection. JOURNAL OF PLANT PHYSIOLOGY 2011; 168:1784-94. [PMID: 21742407 DOI: 10.1016/j.jplph.2011.05.018] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Revised: 03/31/2011] [Accepted: 05/03/2011] [Indexed: 05/23/2023]
Abstract
In plants, the cysteine-rich repeat kinases (CRKs) are a sub-family of receptor-like protein kinases that contain the DUF26 motif in their extracellular domains. It has been shown that in Arabidopsis thaliana, CRK20 is transcriptionally induced by pathogens, salicylic acid and ozone (O(3)). However, its role in responses to biotic and abiotic stress remains to be elucidated. To determine the function of CRK20 in such responses, two CRK20 loss-of-function mutants, crk20-1 and crk20-2, were isolated from public collections of Arabidopsis T-DNA tagged lines and examined for responses to O(3) and Pseudomonas syringae pv. tomato (Pst) DC3000. crk20-1 and crk20-2 showed similar O(3) sensitivities and no differences in the expression of defense genes when compared with the wild-type. However, pathogen growth was significantly reduced, while there were no differences in the induction of salicylic acid related defense genes or salicylic acid accumulation. Furthermore, correlation analysis of CRK20 gene expression suggests that it has a role in the control of H(2)O and/or nutrient transport. We therefore propose that CRK20 promotes conditions that are favorable for Pst DC3000 growth in Arabidopsis, possibly through the regulation of apoplastic homeostasis, and consequently, of the environment of this biotrophic pathogen.
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Affiliation(s)
- Luisa Ederli
- Department of Applied Biology, University of Perugia, Borgo XX Giugno, 74, I-06121 Perugia, Italy
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Lee JY, Wang X, Cui W, Sager R, Modla S, Czymmek K, Zybaliov B, van Wijk K, Zhang C, Lu H, Lakshmanan V. A plasmodesmata-localized protein mediates crosstalk between cell-to-cell communication and innate immunity in Arabidopsis. THE PLANT CELL 2011; 23:3353-73. [PMID: 21934146 PMCID: PMC3203451 DOI: 10.1105/tpc.111.087742] [Citation(s) in RCA: 196] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Plasmodesmata (PD) are thought to play a fundamental role in almost every aspect of plant life, including normal growth, physiology, and developmental responses. However, how specific signaling pathways integrate PD-mediated cell-to-cell communication is not well understood. Here, we present experimental evidence showing that the Arabidopsis thaliana plasmodesmata-located protein 5 (PDLP5; also known as HOPW1-1-INDUCED GENE1) mediates crosstalk between PD regulation and salicylic acid-dependent defense responses. PDLP5 was found to localize at the central region of PD channels and associate with PD pit fields, acting as an inhibitor to PD trafficking, potentially through its capacity to modulate PD callose deposition. As a regulator of PD, PDLP5 was also essential for conferring enhanced innate immunity against bacterial pathogens in a salicylic acid-dependent manner. Based on these findings, a model is proposed illustrating that the regulation of PD closure mediated by PDLP5 constitutes a crucial part of coordinated control of cell-to-cell communication and defense signaling.
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Affiliation(s)
- Jung-Youn Lee
- Department of Plant and Soil Sciences, University of Delaware, Newark, Delaware 19711, USA.
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ZHU LF, HE X, YUAN DJ, XU L, XU L, TU LL, SHEN GX, ZHANG H, ZHANG XL. Genome-Wide Identification of Genes Responsive to ABA and Cold/Salt Stresses in Gossypium hirsutum by Data-Mining and Expression Pattern Analysis. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/s1671-2927(11)60030-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Wrzaczek M, Brosché M, Salojärvi J, Kangasjärvi S, Idänheimo N, Mersmann S, Robatzek S, Karpiński S, Karpińska B, Kangasjärvi J. Transcriptional regulation of the CRK/DUF26 group of receptor-like protein kinases by ozone and plant hormones in Arabidopsis. BMC PLANT BIOLOGY 2010; 10:95. [PMID: 20500828 PMCID: PMC3095361 DOI: 10.1186/1471-2229-10-95] [Citation(s) in RCA: 183] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2009] [Accepted: 05/25/2010] [Indexed: 05/18/2023]
Abstract
BACKGROUND Plant Receptor-like/Pelle kinases (RLK) are a group of conserved signalling components that regulate developmental programs and responses to biotic and abiotic stresses. One of the largest RLK groups is formed by the Domain of Unknown Function 26 (DUF26) RLKs, also called Cysteine-rich Receptor-like Kinases (CRKs), which have been suggested to play important roles in the regulation of pathogen defence and programmed cell death. Despite the vast number of RLKs present in plants, however, only a few of them have been functionally characterized. RESULTS We examined the transcriptional regulation of all Arabidopsis CRKs by ozone (O3), high light and pathogen/elicitor treatment - conditions known to induce the production of reactive oxygen species (ROS) in various subcellular compartments. Several CRKs were transcriptionally induced by exposure to O3 but not by light stress. O3 induces an extracellular oxidative burst, whilst light stress leads to ROS production in chloroplasts. Analysis of publicly available microarray data revealed that the transcriptional responses of the CRKs to O3 were very similar to responses to microbes or pathogen-associated molecular patterns (PAMPs). Several mutants altered in hormone biosynthesis or signalling showed changes in basal and O3-induced transcriptional responses. CONCLUSIONS Combining expression analysis from multiple treatments with mutants altered in hormone biosynthesis or signalling suggest a model in which O3 and salicylic acid (SA) activate separate signaling pathways that exhibit negative crosstalk. Although O3 is classified as an abiotic stress to plants, transcriptional profiling of CRKs showed strong similarities between the O3 and biotic stress responses.
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Affiliation(s)
- Michael Wrzaczek
- Plant Biology Division, Department of Biosciences, University of Helsinki, FI-00014 Helsinki, Finland
| | - Mikael Brosché
- Plant Biology Division, Department of Biosciences, University of Helsinki, FI-00014 Helsinki, Finland
| | - Jarkko Salojärvi
- Plant Biology Division, Department of Biosciences, University of Helsinki, FI-00014 Helsinki, Finland
| | | | - Niina Idänheimo
- Plant Biology Division, Department of Biosciences, University of Helsinki, FI-00014 Helsinki, Finland
| | - Sophia Mersmann
- Max-Planck Institute for Plant Breeding Research, Carl-von-Linné-Weg 10, DE-50829 Cologne, Germany
| | - Silke Robatzek
- Max-Planck Institute for Plant Breeding Research, Carl-von-Linné-Weg 10, DE-50829 Cologne, Germany
- The Sainsbury Laboratories, Norwich Research Park, Colney Lane, NR4 7UH, Norwich, UK
| | - Stanisław Karpiński
- Department of Plant Genetics, Breeding and Plant Biotechnology, Warsaw University of Life Sciences, Nowoursynowska st. 159, PL 02-776, Warsaw, Poland
| | - Barbara Karpińska
- Department of Life Sciences, Södertörn University College, SE-141 89 Huddinge, Sweden
| | - Jaakko Kangasjärvi
- Plant Biology Division, Department of Biosciences, University of Helsinki, FI-00014 Helsinki, Finland
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