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Denjalli I, Knieper M, Uthoff J, Vogelsang L, Kumar V, Seidel T, Dietz KJ. The centrality of redox regulation and sensing of reactive oxygen species in abiotic and biotic stress acclimatization. JOURNAL OF EXPERIMENTAL BOTANY 2024; 75:4494-4511. [PMID: 38329465 DOI: 10.1093/jxb/erae041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Accepted: 02/06/2024] [Indexed: 02/09/2024]
Abstract
During land plant evolution, the number of genes encoding for components of the thiol redox regulatory network and the generator systems of reactive oxygen species (ROS) expanded, tentatively indicating that they have a role in tailored environmental acclimatization. This hypothesis has been validated both experimentally and theoretically during the last few decades. Recent developments of dynamic redox-sensitive GFP (roGFP)-based in vivo sensors for H2O2 and the redox potential of the glutathione pool have paved the way for dissecting the kinetics changes that occur in these crucial parameters in response to environmental stressors. The versatile cellular redox sensory and response regulatory system monitors alterations in redox metabolism and controls the activity of redox target proteins, and thereby affects most, if not all, cellular processes ranging from transcription to translation and metabolism. This review uses examples to describe the role of the redox- and ROS-dependent regulatory network in realising the appropriate responses to diverse environmental stresses. The selected case studies concern different environmental challenges, namely excess excitation energy, the heavy metal cadmium and the metalloid arsenic, nitrogen or phosphate shortages as examples for nutrient deficiency, wounding, and nematode infestation. Each challenge affects the redox-regulatory and ROS network, but our present state of knowledge also points toward pressing questions that remain open in relation to the translation of redox regulation to environmental acclimatization.
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Affiliation(s)
- Ibadete Denjalli
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, 33615 Bielefeld, Germany
| | - Madita Knieper
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, 33615 Bielefeld, Germany
- Center of Biotechnology, CeBiTec, Bielefeld University, 33615 Bielefeld, Germany
| | - Jana Uthoff
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, 33615 Bielefeld, Germany
| | - Lara Vogelsang
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, 33615 Bielefeld, Germany
- Center of Biotechnology, CeBiTec, Bielefeld University, 33615 Bielefeld, Germany
| | - Vijay Kumar
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, 33615 Bielefeld, Germany
| | - Thorsten Seidel
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, 33615 Bielefeld, Germany
| | - Karl-Josef Dietz
- Biochemistry and Physiology of Plants, Faculty of Biology, Bielefeld University, 33615 Bielefeld, Germany
- Center of Biotechnology, CeBiTec, Bielefeld University, 33615 Bielefeld, Germany
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2
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Yang Z, Liang G, Liu C, Chu Z, Li N. The F-box protein ZmFBL41 negatively regulates disease resistance to Rhizoctonia solani by degrading the abscisic acid synthase ZmNCED6 in maize. PLANT CELL REPORTS 2024; 43:48. [PMID: 38300347 DOI: 10.1007/s00299-023-03132-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 12/14/2023] [Indexed: 02/02/2024]
Abstract
KEY MESSAGE The maize F-box protein ZmFBL41 targets abscisic acid synthase 9-cis-epoxycarotenoid dioxygenase 6 for degradation, and this regulatory module is exploited by Rhizoctonia solani to promote infection. F-box proteins are crucial regulators of plant growth, development, and responses to abiotic and biotic stresses. Previous research identified the F-box gene ZmFBL41 as a negative regulator of maize (Zea mays) defenses against Rhizoctonia solani. However, the precise mechanisms by which F-box proteins mediate resistance to R. solani remain poorly understood. In this study, we show that ZmFBL41 interacts with an abscisic acid (ABA) synthase, 9-cis-epoxycarotenoid dioxygenase 6 (ZmNCED6), promoting its degradation via the ubiquitination pathway. We discovered that the ectopic overexpression of ZmNCED6 in rice (Oryza sativa) inhibited R. solani infection by activating stomatal closure, callose deposition, and jasmonic acid (JA) biosynthesis, indicating that ZmNCED6 enhances plant immunity against R. solani. Natural variation at ZmFBL41 across different maize haplotypes did not affect the ZmFBL41-ZmNCED6 interaction. These findings suggest that ZmFBL41 targets ZmNCED6 for degradation, leading to a decrease in ABA levels in maize, in turn, inhibiting ABA-mediated disease resistance pathways, such as stomatal closure, callose deposition, and JA biosynthesis, ultimately facilitating R. solani infection.
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Affiliation(s)
- Zhangshuai Yang
- National Key Laboratory of Wheat Improvement, College of Agronomy, Shandong Agricultural University, Tai'an, 271018, China
| | - Guanyu Liang
- National Key Laboratory of Wheat Improvement, College of Agronomy, Shandong Agricultural University, Tai'an, 271018, China
| | - Chenxu Liu
- National Key Laboratory of Wheat Improvement, College of Agronomy, Shandong Agricultural University, Tai'an, 271018, China
| | - Zhaohui Chu
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China.
| | - Ning Li
- National Key Laboratory of Wheat Improvement, College of Agronomy, Shandong Agricultural University, Tai'an, 271018, China.
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Liese A, Eichstädt B, Lederer S, Schulz P, Oehlschläger J, Matschi S, Feijó JA, Schulze WX, Konrad KR, Romeis T. Imaging of plant calcium-sensor kinase conformation monitors real time calcium-dependent decoding in planta. THE PLANT CELL 2024; 36:276-297. [PMID: 37433056 PMCID: PMC11210078 DOI: 10.1093/plcell/koad196] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 06/14/2023] [Accepted: 07/10/2023] [Indexed: 07/13/2023]
Abstract
Changes in cytosolic calcium (Ca2+) concentration are among the earliest reactions to a multitude of stress cues. While a plethora of Ca2+-permeable channels may generate distinct Ca2+ signatures and contribute to response specificities, the mechanisms by which Ca2+ signatures are decoded are poorly understood. Here, we developed a genetically encoded Förster resonance energy transfer (FRET)-based reporter that visualizes the conformational changes in Ca2+-dependent protein kinases (CDPKs/CPKs). We focused on two CDPKs with distinct Ca2+-sensitivities, highly Ca2+-sensitive Arabidopsis (Arabidopsis thaliana) AtCPK21 and rather Ca2+-insensitive AtCPK23, to report conformational changes accompanying kinase activation. In tobacco (Nicotiana tabacum) pollen tubes, which naturally display coordinated spatial and temporal Ca2+ fluctuations, CPK21-FRET, but not CPK23-FRET, reported oscillatory emission ratio changes mirroring cytosolic Ca2+ changes, pointing to the isoform-specific Ca2+-sensitivity and reversibility of the conformational change. In Arabidopsis guard cells, CPK21-FRET-monitored conformational dynamics suggest that CPK21 serves as a decoder of signal-specific Ca2+ signatures in response to abscisic acid and the flagellin peptide flg22. Based on these data, CDPK-FRET is a powerful approach for tackling real-time live-cell Ca2+ decoding in a multitude of plant developmental and stress responses.
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Affiliation(s)
- Anja Liese
- Department for Biochemistry of Plant Interactions, Leibniz Institute of Plant Biochemistry, D-06120 Halle (Saale), Germany
- Dahlem Centre of Plant Sciences, Freie Universität Berlin, D-14195 Berlin, Germany
| | - Bernadette Eichstädt
- Dahlem Centre of Plant Sciences, Freie Universität Berlin, D-14195 Berlin, Germany
| | - Sarah Lederer
- Department for Biochemistry of Plant Interactions, Leibniz Institute of Plant Biochemistry, D-06120 Halle (Saale), Germany
| | - Philipp Schulz
- Dahlem Centre of Plant Sciences, Freie Universität Berlin, D-14195 Berlin, Germany
| | - Jan Oehlschläger
- Department for Biochemistry of Plant Interactions, Leibniz Institute of Plant Biochemistry, D-06120 Halle (Saale), Germany
| | - Susanne Matschi
- Department for Biochemistry of Plant Interactions, Leibniz Institute of Plant Biochemistry, D-06120 Halle (Saale), Germany
| | - José A Feijó
- Department of Cell Biology & Molecular Genetics, University of Maryland, 2136 Bioscience Research Bldg, College Park, MD 20742-5815, USA
| | - Waltraud X Schulze
- Plant Systems Biology, Universität Hohenheim, D-70593 Stuttgart, Germany
| | - Kai R Konrad
- Julius-Von-Sachs Institute for Biosciences, Julius Maximilians Universität Würzburg, D-97082 Würzburg, Germany
| | - Tina Romeis
- Department for Biochemistry of Plant Interactions, Leibniz Institute of Plant Biochemistry, D-06120 Halle (Saale), Germany
- Dahlem Centre of Plant Sciences, Freie Universität Berlin, D-14195 Berlin, Germany
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4
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Truong TTT, Chiu CC, Su PY, Chen JY, Nguyen TP, Ohme-Takagi M, Lee RH, Cheng WH, Huang HJ. Signaling pathways involved in microbial indoor air pollutant 3-methyl-1-butanol in the induction of stomatal closure in Arabidopsis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:7556-7568. [PMID: 38165546 DOI: 10.1007/s11356-023-31641-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 12/17/2023] [Indexed: 01/04/2024]
Abstract
Indoor air pollution is a global problem and one of the main stress factors that has negative effects on plant and human health. 3-methyl-1-butanol (3MB), an indoor air pollutant, is a microbial volatile organic compound (mVOC) commonly found in damp indoor dwellings. In this study, we reported that 1 mg/L of 3MB can elicit a significant reduction in the stomatal aperture ratio in Arabidopsis and tobacco. Our results also showed that 3MB enhances the reactive oxygen species (ROS) production in guard cells of wild-type Arabidopsis after 24 h exposure. Further investigation of 24 h 3MB fumigation of rbohD, the1-1, mkk1, mkk3, and nced3 mutants revealed that ROS production, cell wall integrity, MAPK kinases cascade, and phytohormone abscisic acid are all involved in the process of 3MB-induced stomatal. Our findings proposed a mechanism by which 3MB regulates stomatal closure in Arabidopsis. Understanding the mechanisms by which microbial indoor air pollutant induces stomatal closure is critical for modulating the intake of harmful gases from indoor environments into leaves. Investigations into how stomata respond to the indoor mVOC 3MB will shed light on the plant's "self-defense" system responding to indoor air pollution.
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Affiliation(s)
- Tu-Trinh Thi Truong
- Department of Life Sciences, National Cheng Kung University, No. 1, Dasyue Rd, East District, Tainan, Taiwan
- Faculty of Technology, The University of Danang-Campus in Kontum, No. 704 Phan Dinh Phung, Kontum, Vietnam
| | - Chi-Chou Chiu
- Institute of Tropical Plant Sciences and Microbiology, National Cheng Kung University, No. 1, Dasyue Rd, East District, Tainan, Taiwan
| | - Pei-Yu Su
- Department of Life Sciences, National Cheng Kung University, No. 1, Dasyue Rd, East District, Tainan, Taiwan
| | - Jing-Yu Chen
- Department of Life Sciences, National Cheng Kung University, No. 1, Dasyue Rd, East District, Tainan, Taiwan
| | - Tri-Phuong Nguyen
- Department of Life Sciences, National Cheng Kung University, No. 1, Dasyue Rd, East District, Tainan, Taiwan
| | - Masaru Ohme-Takagi
- Institute of Tropical Plant Sciences and Microbiology, National Cheng Kung University, No. 1, Dasyue Rd, East District, Tainan, Taiwan
| | - Ruey-Hua Lee
- Institute of Tropical Plant Sciences and Microbiology, National Cheng Kung University, No. 1, Dasyue Rd, East District, Tainan, Taiwan
| | - Wan-Hsing Cheng
- Institute of Plant and Microbial Biology, Academia Sinica, No. 128, Section 2, Academia Rd, Nangang District, Taipei City, Taiwan
| | - Hao-Jen Huang
- Department of Life Sciences, National Cheng Kung University, No. 1, Dasyue Rd, East District, Tainan, Taiwan.
- Institute of Tropical Plant Sciences and Microbiology, National Cheng Kung University, No. 1, Dasyue Rd, East District, Tainan, Taiwan.
- Graduate Program in Translational Agricultural Sciences, National Cheng Kung University, No. 1, Dasyue Rd, East District, Tainan, Taiwan.
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5
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Truong TTT, Chiu CC, Chen JY, Su PY, Nguyen TP, Trinh NN, Mimura T, Lee RH, Chang CH, Huang HJ. Uncovering molecular mechanisms involved in microbial volatile compounds-induced stomatal closure in Arabidopsis thaliana. PLANT MOLECULAR BIOLOGY 2023; 113:143-155. [PMID: 37985583 DOI: 10.1007/s11103-023-01379-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 09/18/2023] [Indexed: 11/22/2023]
Abstract
Microbial volatile compounds (mVCs) may cause stomatal closure to limit pathogen invasion as part of plant innate immune response. However, the mechanisms of mVC-induced stomatal closure remain unclear. In this study, we co-cultured Enterobacter aerogenes with Arabidopsis (Arabidopsis thaliana) seedlings without direct contact to initiate stomatal closure. Experiments using the reactive oxygen species (ROS)-sensitive fluorescent dye, H2DCF-DA, showed that mVCs from E. aerogenes enhanced ROS production in guard cells of wild-type plants. The involvement of ROS in stomatal closure was then demonstrated in an ROS production mutant (rbohD). In addition, we identified two stages of signal transduction during E. aerogenes VC-induced stomatal closure by comparing the response of wild-type Arabidopsis with a panel of mutants. In the early stage (3 h exposure), E. aerogenes VCs induced stomatal closure in wild-type and receptor-like kinase THESEUS1 mutant (the1-1) but not in rbohD, plant hormone-related mutants (nced3, erf4, jar1-1), or MAPK kinase mutants (mkk1 and mkk3). However, in the late stage (24 h exposure), E. aerogenes VCs induced stomatal closure in wild-type and rbohD but not in nced3, erf4, jar1-1, the1-1, mkk1 or mkk3. Taken together, our results suggest that E. aerogenes mVC-induced plant immune responses modulate stomatal closure in Arabidopsis by a multi-phase mechanism.
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Affiliation(s)
- Tu-Trinh Thi Truong
- Department of Life Sciences, National Cheng Kung University, No. 1, University Road, Tainan, 701, Taiwan
- Faculty of Technology, The University of Danang-Campus in Kontum, The University of Danang, Kon Tum City, 580000, Vietnam
| | - Chi-Chou Chiu
- Institute of Tropical Plant Sciences and Microbiology, National Cheng Kung University, No. 1, University Road, Tainan, 701, Taiwan
| | - Jing-Yu Chen
- Department of Life Sciences, National Cheng Kung University, No. 1, University Road, Tainan, 701, Taiwan
| | - Pei-Yu Su
- Department of Life Sciences, National Cheng Kung University, No. 1, University Road, Tainan, 701, Taiwan
| | - Tri-Phuong Nguyen
- Department of Life Sciences, National Cheng Kung University, No. 1, University Road, Tainan, 701, Taiwan
| | - Ngoc-Nam Trinh
- Industrial University of Ho Chi Minh City, No. 12, Nguyen Van Bao, Ho Chi Minh City, Vietnam
| | - Tetsuro Mimura
- Kyoto University of Advanced Science, Kameoka, Kyoto, 621-8555, Japan
| | - Ruey-Hua Lee
- Institute of Tropical Plant Sciences and Microbiology, National Cheng Kung University, No. 1, University Road, Tainan, 701, Taiwan
| | - Ching-Han Chang
- Graduate Program in Translational Agricultural Sciences, National Cheng Kung University and Academia Sinica, No. 1, University Road, Tainan, 701, Taiwan
| | - Hao-Jen Huang
- Department of Life Sciences, National Cheng Kung University, No. 1, University Road, Tainan, 701, Taiwan.
- Graduate Program in Translational Agricultural Sciences, National Cheng Kung University and Academia Sinica, No. 1, University Road, Tainan, 701, Taiwan.
- Institute of Tropical Plant Sciences and Microbiology, National Cheng Kung University, No. 1, University Road, Tainan, 701, Taiwan.
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6
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Zhou D, Chen X, Chen X, Xia Y, Liu J, Zhou G. Plant immune receptors interact with hemibiotrophic pathogens to activate plant immunity. Front Microbiol 2023; 14:1252039. [PMID: 37876778 PMCID: PMC10591190 DOI: 10.3389/fmicb.2023.1252039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 09/20/2023] [Indexed: 10/26/2023] Open
Abstract
Phytopathogens pose a devastating threat to the productivity and yield of crops by causing destructive plant diseases in natural and agricultural environments. Hemibiotrophic pathogens have a variable-length biotrophic phase before turning to necrosis and are among the most invasive plant pathogens. Plant resistance to hemibiotrophic pathogens relies mainly on the activation of innate immune responses. These responses are typically initiated after the plant plasma membrane and various plant immune receptors detect immunogenic signals associated with pathogen infection. Hemibiotrophic pathogens evade pathogen-triggered immunity by masking themselves in an arms race while also enhancing or manipulating other receptors to promote virulence. However, our understanding of plant immune defenses against hemibiotrophic pathogens is highly limited due to the intricate infection mechanisms. In this review, we summarize the strategies that different hemibiotrophic pathogens interact with host immune receptors to activate plant immunity. We also discuss the significant role of the plasma membrane in plant immune responses, as well as the current obstacles and potential future research directions in this field. This will enable a more comprehensive understanding of the pathogenicity of hemibiotrophic pathogens and how distinct plant immune receptors oppose them, delivering valuable data for the prevention and management of plant diseases.
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Affiliation(s)
- Diao Zhou
- Key Laboratory of National Forestry and Grassland Administration on Control of Artificial Forest Diseases and Pests in South China, Central South University of Forestry and Technology, Changsha, China
- Hunan Provincial Key Laboratory for Control of Forest Diseases and Pests, Central South University of Forestry and Technology, Changsha, China
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha, China
| | - Xingzhou Chen
- Key Laboratory of National Forestry and Grassland Administration on Control of Artificial Forest Diseases and Pests in South China, Central South University of Forestry and Technology, Changsha, China
- Hunan Provincial Key Laboratory for Control of Forest Diseases and Pests, Central South University of Forestry and Technology, Changsha, China
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha, China
| | - Xinggang Chen
- Key Laboratory of National Forestry and Grassland Administration on Control of Artificial Forest Diseases and Pests in South China, Central South University of Forestry and Technology, Changsha, China
- Hunan Provincial Key Laboratory for Control of Forest Diseases and Pests, Central South University of Forestry and Technology, Changsha, China
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha, China
| | - Yandong Xia
- Key Laboratory of National Forestry and Grassland Administration on Control of Artificial Forest Diseases and Pests in South China, Central South University of Forestry and Technology, Changsha, China
- Hunan Provincial Key Laboratory for Control of Forest Diseases and Pests, Central South University of Forestry and Technology, Changsha, China
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha, China
| | - Junang Liu
- Key Laboratory of National Forestry and Grassland Administration on Control of Artificial Forest Diseases and Pests in South China, Central South University of Forestry and Technology, Changsha, China
- Hunan Provincial Key Laboratory for Control of Forest Diseases and Pests, Central South University of Forestry and Technology, Changsha, China
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha, China
| | - Guoying Zhou
- Key Laboratory of National Forestry and Grassland Administration on Control of Artificial Forest Diseases and Pests in South China, Central South University of Forestry and Technology, Changsha, China
- Hunan Provincial Key Laboratory for Control of Forest Diseases and Pests, Central South University of Forestry and Technology, Changsha, China
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha, China
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Sobol G, Majhi BB, Pasmanik-Chor M, Zhang N, Roberts HM, Martin GB, Sessa G. Tomato receptor-like cytoplasmic kinase Fir1 is involved in flagellin signaling and preinvasion immunity. PLANT PHYSIOLOGY 2023; 192:565-581. [PMID: 36511947 PMCID: PMC10152693 DOI: 10.1093/plphys/kiac577] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 11/15/2022] [Accepted: 11/25/2022] [Indexed: 05/03/2023]
Abstract
Detection of bacterial flagellin by the tomato (Solanum lycopersicum) receptors Flagellin sensing 2 (Fls2) and Fls3 triggers activation of pattern-triggered immunity (PTI). We identified the tomato Fls2/Fls3-interacting receptor-like cytoplasmic kinase 1 (Fir1) protein that is involved in PTI triggered by flagellin perception. Fir1 localized to the plasma membrane and interacted with Fls2 and Fls3 in yeast (Saccharomyces cerevisiae) and in planta. CRISPR/Cas9-generated tomato fir1 mutants were impaired in several immune responses induced by the flagellin-derived peptides flg22 and flgII-28, including resistance to Pseudomonas syringae pv. tomato (Pst) DC3000, production of reactive oxygen species, and enhanced PATHOGENESIS-RELATED 1b (PR1b) gene expression, but not MAP kinase phosphorylation. Remarkably, fir1 mutants developed larger Pst DC3000 populations than wild-type plants, whereas no differences were observed in wild-type and fir1 mutant plants infected with the flagellin deficient Pst DC3000ΔfliC. fir1 mutants failed to close stomata when infected with Pst DC3000 and Pseudomonas fluorescens and were more susceptible to Pst DC3000 than wild-type plants when inoculated by dipping, but not by vacuum-infiltration, indicating involvement of Fir1 in preinvasion immunity. RNA-seq analysis detected fewer differentially expressed genes in fir1 mutants and altered expression of jasmonic acid (JA)-related genes. In support of JA response deregulation in fir1 mutants, these plants were similarly susceptible to Pst DC3000 and to the coronatine-deficient Pst DC3118 strain, and more resistant to the necrotrophic fungus Botrytis cinerea following PTI activation. These results indicate that tomato Fir1 is required for a subset of flagellin-triggered PTI responses and support a model in which Fir1 negatively regulates JA signaling during PTI activation.
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Affiliation(s)
- Guy Sobol
- School of Plant Sciences and Food Security, Tel-Aviv University, 69978 Tel-Aviv, Israel
| | - Bharat Bhusan Majhi
- School of Plant Sciences and Food Security, Tel-Aviv University, 69978 Tel-Aviv, Israel
| | - Metsada Pasmanik-Chor
- Bioinformatics Unit, G.S. Wise Faculty of Life Science, Tel-Aviv University, 69978 Tel- Aviv, Israel
| | - Ning Zhang
- Boyce Thompson Institute for Plant Research and Plant Pathology and Plant-Microbe Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, New York 14853, USA
| | - Holly M Roberts
- Boyce Thompson Institute for Plant Research and Plant Pathology and Plant-Microbe Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, New York 14853, USA
| | - Gregory B Martin
- Boyce Thompson Institute for Plant Research and Plant Pathology and Plant-Microbe Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, New York 14853, USA
| | - Guido Sessa
- School of Plant Sciences and Food Security, Tel-Aviv University, 69978 Tel-Aviv, Israel
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8
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Wang R, Bai J, Yan G, Xiao Z, Chen K, Li K, Tang J, Lu D. The enzymatic hydrolysate of fucoidan from Sargassum hemiphyllum triggers immunity in plants. JOURNAL OF PLANT PHYSIOLOGY 2023; 283:153967. [PMID: 36924537 PMCID: PMC9998127 DOI: 10.1016/j.jplph.2023.153967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 03/07/2023] [Accepted: 03/07/2023] [Indexed: 06/18/2023]
Abstract
Fucoidans are polysaccharides that consist predominantly of sulfated L-fucoses, from which, fucoidan oligosaccharides (FOSs) are prepared through different methods. Fucoidan has versatile physiological activities, like antiviral functions against SARS CoV-2 and bioactivitiy in enhancing immune responses. Although fucoidan or FOS has been widely used in mammals as functional foods and new drugs, its application in plants is still very limited. Moreover, whether fucoidan or its derived hydrolytic products can trigger immune responses in plants remained unknown. In this work, we demonstrate that the fucoidan enzymatic hydrolysate (FEH) prepared from Sargassum hemiphyllum triggers various immune responses, such as ROS production, MAPK activation, gene expression reprogramming, callose deposition, stomatal closure, and plant resistance to the bacterial strain Pseudomonas syringae pv. tomato (Pst) DC3000. Notably, FEH did not induce Arabidopsis root growth inhibition at the concentration used for triggering other immune responses. Our work suggests that EHF can potentially be used as a non-microbial elicitor in agricultural practices to protect plants from pathogen infection.
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Affiliation(s)
- Ranran Wang
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, Hebei, 050021, China; College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jiaojiao Bai
- College of Pharmacy and Life Science, Jiujiang University, Jiujiang, Jiangxi, 332000, China
| | - Guofu Yan
- Beijing Leili Marine Bioindustry Inc., Beijing, 100093, China
| | - Zejun Xiao
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, Hebei, 050021, China; College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Kexin Chen
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, Hebei, 050021, China; College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Kaikai Li
- Beijing Leili Marine Bioindustry Inc., Beijing, 100093, China
| | - Jie Tang
- Beijing Leili Marine Bioindustry Inc., Beijing, 100093, China.
| | - Dongping Lu
- Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, Hebei, 050021, China.
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9
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Esmael A, Al-Hindi RR, Albiheyri RS, Alharbi MG, Filimban AAR, Alseghayer MS, Almaneea AM, Alhadlaq MA, Ayubu J, Teklemariam AD. Fresh Produce as a Potential Vector and Reservoir for Human Bacterial Pathogens: Revealing the Ambiguity of Interaction and Transmission. Microorganisms 2023; 11:microorganisms11030753. [PMID: 36985326 PMCID: PMC10056104 DOI: 10.3390/microorganisms11030753] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/08/2023] [Accepted: 03/10/2023] [Indexed: 03/17/2023] Open
Abstract
The consumer demand for fresh produce (vegetables and fruits) has considerably increased since the 1980s for more nutritious foods and healthier life practices, particularly in developed countries. Currently, several foodborne outbreaks have been linked to fresh produce. The global rise in fresh produce associated with human infections may be due to the use of wastewater or any contaminated water for the cultivation of fruits and vegetables, the firm attachment of the foodborne pathogens on the plant surface, and the internalization of these agents deep inside the tissue of the plant, poor disinfection practices and human consumption of raw fresh produce. Several investigations have been established related to the human microbial pathogens (HMPs) interaction, their internalization, and survival on/within plant tissue. Previous studies have displayed that HMPs are comprised of several cellular constituents to attach and adapt to the plant’s intracellular niches. In addition, there are several plant-associated factors, such as surface morphology, nutrient content, and plant–HMP interactions, that determine the internalization and subsequent transmission to humans. Based on documented findings, the internalized HMPs are not susceptible to sanitation or decontaminants applied on the surface of the fresh produce. Therefore, the contamination of fresh produce by HMPs could pose significant food safety hazards. This review provides a comprehensive overview of the interaction between fresh produce and HMPs and reveals the ambiguity of interaction and transmission of the agents to humans.
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Affiliation(s)
- Ahmed Esmael
- Botany and Microbiology Department, Faculty of Science, Benha University, Benha 13518, Egypt
- Nebraska Center for Virology, University of Nebraska-Lincoln, Lincoln, NE 68583, USA
- Correspondence: (A.E.); (R.R.A.)
| | - Rashad R. Al-Hindi
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Correspondence: (A.E.); (R.R.A.)
| | - Raed S. Albiheyri
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Mona G. Alharbi
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Amani A. R. Filimban
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Mazen S. Alseghayer
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Monitoring and Risk Assessment Department, Saudi Food and Drug Authority, Riyadh 13513, Saudi Arabia
| | - Abdulaziz M. Almaneea
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Monitoring and Risk Assessment Department, Saudi Food and Drug Authority, Riyadh 13513, Saudi Arabia
| | - Meshari Ahmed Alhadlaq
- Molecular Biology Section, Reference Laboratory for Microbiology Department, Research and Laboratories Sector, Saudi Food and Drug Authority, Riyadh 13513, Saudi Arabia
| | - Jumaa Ayubu
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Addisu D. Teklemariam
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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