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Huang Z, Wang C, Li H, Zhou Y, Duan Z, Bao Y, Hu Q, Powell CA, Chen B, Zhang J, Zhang M, Yao W. Small secreted effector protein from Fusarium sacchari suppresses host immune response by inhibiting ScPi21-induced cell death. MOLECULAR PLANT PATHOLOGY 2024; 25:e13414. [PMID: 38279852 PMCID: PMC10782473 DOI: 10.1111/mpp.13414] [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: 07/26/2023] [Revised: 12/10/2023] [Accepted: 12/12/2023] [Indexed: 01/29/2024]
Abstract
Fusarium sacchari is one of the primary pathogens causing pokkah boeng disease, which impairs the yield and quality of sugarcane around the world. Understanding the molecular mechanisms of the F. sacchari effectors that regulate plant immunity is of great importance for the development of novel strategies for the persistent control of pokkah boeng disease. In a previous study, Fs00367 was identified to inhibit BAX-induced cell death. In this study, Fs00367nsp (without signal peptide) was found to suppress BAX-induced cell death, reactive oxygen species bursts and callose accumulation. The amino acid region 113-142 of Fs00367nsp is the functional region. Gene mutagenesis indicated that Fs00367 is important for the full virulence of F. sacchari. A yeast two-hybrid assay revealed an interaction between Fs00367nsp and sugarcane ScPi21 in yeast that was further confirmed using bimolecular fluorescence complementation, pull-down assay and co-immunoprecipitation. ScPi21 can induce plant immunity, but this effect could be blunted by Fs00367nsp. These results suggest that Fs00367 is a core pathogenicity factor that suppresses plant immunity through inhibiting ScPi21-induced cell death. The findings of this study provide new insights into the molecular mechanisms of effectors in regulating plant immunity.
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Affiliation(s)
- Zhen Huang
- State Key Laboratory for Conservation and Utilization of Subtropical Agri‐Biological Resources, Guangxi Key Laboratory of Sugarcane BiologyGuangxi UniversityNanningChina
| | - Caixia Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agri‐Biological Resources, Guangxi Key Laboratory of Sugarcane BiologyGuangxi UniversityNanningChina
| | - Huixue Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agri‐Biological Resources, Guangxi Key Laboratory of Sugarcane BiologyGuangxi UniversityNanningChina
| | - Yuming Zhou
- State Key Laboratory for Conservation and Utilization of Subtropical Agri‐Biological Resources, Guangxi Key Laboratory of Sugarcane BiologyGuangxi UniversityNanningChina
| | - Zhenzhen Duan
- State Key Laboratory for Conservation and Utilization of Subtropical Agri‐Biological Resources, Guangxi Key Laboratory of Sugarcane BiologyGuangxi UniversityNanningChina
| | - Yixue Bao
- State Key Laboratory for Conservation and Utilization of Subtropical Agri‐Biological Resources, Guangxi Key Laboratory of Sugarcane BiologyGuangxi UniversityNanningChina
| | - Qin Hu
- State Key Laboratory for Conservation and Utilization of Subtropical Agri‐Biological Resources, Guangxi Key Laboratory of Sugarcane BiologyGuangxi UniversityNanningChina
| | | | - Baoshan Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agri‐Biological Resources, Guangxi Key Laboratory of Sugarcane BiologyGuangxi UniversityNanningChina
| | - Jisen Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agri‐Biological Resources, Guangxi Key Laboratory of Sugarcane BiologyGuangxi UniversityNanningChina
| | - Muqing Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agri‐Biological Resources, Guangxi Key Laboratory of Sugarcane BiologyGuangxi UniversityNanningChina
- IRREC‐IFASUniversity of FloridaFort PierceFloridaUSA
| | - Wei Yao
- State Key Laboratory for Conservation and Utilization of Subtropical Agri‐Biological Resources, Guangxi Key Laboratory of Sugarcane BiologyGuangxi UniversityNanningChina
- IRREC‐IFASUniversity of FloridaFort PierceFloridaUSA
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2
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Zhao Y, Zheng X, Tabima JF, Zhu S, Søndreli KL, Hundley H, Bauer D, Barry K, Zhang Y, Schmutz J, Wang Y, LeBoldus JM, Xiong Q. Secreted Effector Proteins of Poplar Leaf Spot and Stem Canker Pathogen Sphaerulina musiva Manipulate Plant Immunity and Contribute to Virulence in Diverse Ways. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2023; 36:779-795. [PMID: 37551980 DOI: 10.1094/mpmi-07-23-0091-r] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/09/2023]
Abstract
Fungal effectors play critical roles in manipulating plant immune responses and promoting colonization. Sphaerulina musiva is a heterothallic ascomycete fungus that causes Septoria leaf spot and stem canker disease in poplar (Populus spp.) plantations. This disease can result in premature defoliation, branch and stem breakage, increased mortality, and plantation failure. However, little is known about the interaction between S. musiva and poplar. Previous work predicted 142 candidate secreted effector proteins in S. musiva (SmCSEPs), 19 of which were selected for further functional characterization in this study. SmCSEP3 induced plant cell death in Nicotiana benthamiana, while 8 out of 19 tested SmCSEPs suppressed cell death. The signal peptides of these eight SmCSEPs exhibited secretory activity in a yeast signal sequence trap assay. Confocal microscopy revealed that four of these eight SmCSEPs target both the cytoplasm and the nucleus, whereas four predominantly localize to discrete punctate structures. Pathogen challenge assays in N. benthamiana demonstrated that the transient expression of six SmCSEPs promoted Fusarium proliferatum infection. The expression of these six SmCSEP genes were induced during infection. SmCSEP2, SmCSEP13, and SmCSEP25 suppressed chitin-triggered reactive oxygen species burst and callose deposition in N. benthamiana. The candidate secreted effector proteins of S. musiva target multiple compartments in the plant cell and modulate different pattern-triggered immunity pathways. [Formula: see text] The author(s) have dedicated the work to the public domain under the Creative Commons CC0 "No Rights Reserved" license by waiving all of his or her rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law, 2023.
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Affiliation(s)
- Yao Zhao
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210095, China
| | - Xinyue Zheng
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing 210095, China
| | - Javier F Tabima
- Department of Botany and Plant Pathology, College of Agricultural Sciences, Oregon State University, Corvallis, OR 97331, U.S.A
- Department of Forest Engineering, Resources and Management, College of Forestry, Oregon State University, Corvallis, OR 97331, U.S.A
| | - Sheng Zhu
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing 210095, China
| | - Kelsey L Søndreli
- Department of Botany and Plant Pathology, College of Agricultural Sciences, Oregon State University, Corvallis, OR 97331, U.S.A
| | - Hope Hundley
- HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, U.S.A
| | - Diane Bauer
- HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, U.S.A
| | - Kerrie Barry
- HudsonAlpha Institute for Biotechnology, Huntsville, AL 35806, U.S.A
| | - Yaxin Zhang
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing 210095, China
| | - Jeremy Schmutz
- U.S. Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, U.S.A
| | - Yuanchao Wang
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210095, China
| | - Jared M LeBoldus
- Department of Botany and Plant Pathology, College of Agricultural Sciences, Oregon State University, Corvallis, OR 97331, U.S.A
- Department of Biology, Clark University, Worcester, MA 01610, U.S.A
| | - Qin Xiong
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing 210095, China
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Sabnam N, Hussain A, Saha P. The secret password: Cell death-inducing proteins in filamentous phytopathogens - As versatile tools to develop disease-resistant crops. Microb Pathog 2023; 183:106276. [PMID: 37541554 DOI: 10.1016/j.micpath.2023.106276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 07/25/2023] [Accepted: 07/27/2023] [Indexed: 08/06/2023]
Abstract
Cell death-inducing proteins (CDIPs) are some of the secreted effector proteins manifested by filamentous oomycetes and fungal pathogens to invade the plant tissue and facilitate infection. Along with their involvement in different developmental processes and virulence, CDIPs play a crucial role in plant-pathogen interactions. As the name implies, CDIPs cause necrosis and trigger localised cell death in the infected host tissues by the accumulation of higher concentrations of hydrogen peroxide (H2O2), oxidative burst, accumulation of nitric oxide (NO), and electrolyte leakage. They also stimulate the biosynthesis of defense-related phytohormones such as salicylic acid (SA), jasmonic acid (JA), abscisic acid (ABA), and ethylene (ET), as well as the expression of pathogenesis-related (PR) genes that are important in disease resistance. Altogether, the interactions result in the hypersensitive response (HR) in the host plant, which might confer systemic acquired resistance (SAR) in some cases against a vast array of related and unrelated pathogens. The CDIPs, due to their capability of inducing host resistance, are thus unique among the array of proteins secreted by filamentous plant pathogens. More interestingly, a few transgenic plant lines have also been developed expressing the CDIPs with added resistance. Thus, CDIPs have opened an interesting hot area of research. The present study critically reviews the current knowledge of major types of CDIPs identified across filamentous phytopathogens and their modes of action in the last couple of years. This review also highlights the recent breakthrough technologies in studying plant-pathogen interactions as well as crop improvement by enhancing disease resistance through CDIPs.
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Affiliation(s)
- Nazmiara Sabnam
- Department of Life Sciences, Presidency University, Kolkata, India.
| | - Afzal Hussain
- Department of Bioinformatics, Maulana Azad National Institute of Technology, Bhopal, India
| | - Pallabi Saha
- Biotechnology Institute, University of Minnesota, Saint Paul, Minnesota, 55108, United States; Department of Biotechnology, National Institute of Technology, Durgapur, India
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4
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Quesada-Ocampo LM, Parada-Rojas CH, Hansen Z, Vogel G, Smart C, Hausbeck MK, Carmo RM, Huitema E, Naegele RP, Kousik CS, Tandy P, Lamour K. Phytophthora capsici: Recent Progress on Fundamental Biology and Disease Management 100 Years After Its Description. ANNUAL REVIEW OF PHYTOPATHOLOGY 2023; 61:185-208. [PMID: 37257056 DOI: 10.1146/annurev-phyto-021622-103801] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Phytophthora capsici is a destructive oomycete pathogen of vegetable, ornamental, and tropical crops. First described by L.H. Leonian in 1922 as a pathogen of pepper in New Mexico, USA, P. capsici is now widespread in temperate and tropical countries alike. Phytophthora capsici is notorious for its capability to evade disease management strategies. High genetic diversity allows P. capsici populations to overcome fungicides and host resistance, the formation of oospores results in long-term persistence in soils, zoospore differentiation in the presence of water increases epidemic potential, and a broad host range maximizes economic losses and limits the effectiveness of crop rotation. The severity of disease caused by P. capsici and management challenges have led to numerous research efforts in the past 100 years. Here, we discuss recent findings regarding the biology, genetic diversity, disease management, fungicide resistance, host resistance, genomics, and effector biology of P. capsici.
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Affiliation(s)
- L M Quesada-Ocampo
- Department of Entomology and Plant Pathology and NC Plant Sciences Initiative, North Carolina State University, Raleigh, North Carolina, USA;
| | - C H Parada-Rojas
- Department of Entomology and Plant Pathology and NC Plant Sciences Initiative, North Carolina State University, Raleigh, North Carolina, USA;
| | - Z Hansen
- Department of Entomology and Plant Pathology, University of Tennessee, Knoxville, Tennessee, USA
| | - G Vogel
- School of Integrative Plant Science, Cornell University, Geneva, New York, USA
| | - C Smart
- School of Integrative Plant Science, Cornell University, Geneva, New York, USA
| | - M K Hausbeck
- Department of Plant, Soil, and Microbial Sciences, Michigan State University, East Lansing, Michigan, USA
| | - R M Carmo
- Division of Plant Sciences, University of Dundee, Dundee, United Kingdom
| | - E Huitema
- Division of Plant Sciences, University of Dundee, Dundee, United Kingdom
- James Hutton Institute, Invergowrie, Dundee, United Kingdom
| | - R P Naegele
- Sugarbeet and Bean Research Unit, USDA, ARS, East Lansing, Michigan, USA
| | - C S Kousik
- US Vegetable Laboratory, USDA, ARS, Charleston, South Carolina, USA
| | - P Tandy
- Department of Entomology and Plant Pathology, University of Tennessee, Knoxville, Tennessee, USA
| | - K Lamour
- Department of Entomology and Plant Pathology, University of Tennessee, Knoxville, Tennessee, USA
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5
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Wang C, Huang Z, Duan Z, Zhu L, Di R, Bao Y, Powell CA, Hu Q, Chen B, Zhang M, Yao W. Pectate Lyase from Fusarium sacchari Induces Plant Immune Responses and Contributes to Virulence. Microbiol Spectr 2023; 11:e0016523. [PMID: 37140457 PMCID: PMC10269888 DOI: 10.1128/spectrum.00165-23] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 04/13/2023] [Indexed: 05/05/2023] Open
Abstract
Fusarium sacchari is one of the primary pathogens causing Pokkah Boeng disease (PBD) in sugarcane in China. Pectate lyases (PL), which play a critical role in pectin degradation and fungal virulence, have been extensively studied in major bacterial and fungal pathogens of a wide range of plant species. However, only a few PLs have been functionally investigated. In this study, we analyzed the function of the pectate lyase gene, FsPL, from F. sacchari. FsPL is a key virulence factor of F. sacchari and can induce plant cell death. FsPL also triggers the pathogen-associated molecular pattern (PAMP)-triggered immunity (PTI) response in Nicotiana benthamiana, as reflected by increases in reactive oxygen species (ROS) production, electrolyte leakage, and callose accumulation, as well as the upregulation of defense response genes. In addition, our study also found that the signal peptide of FsPL was necessary for induced cell death and PTI responses. Virus-induced gene silencing showed that FsPL-induced cell death in Nicotiana benthamiana was mediated by leucine-rich repeat (LRR) receptor-like kinases BAK1 and SOBIR1. Thus, FsPL may not only be a critical virulence factor for F. sacchari but may also induce plant defense responses. These findings provide new insights into the functions of pectate lyase in host-pathogen interactions. IMPORTANCE Pokkah Boeng disease (PBD) is one of the main diseases affecting sugarcane in China, seriously damaging sugarcane production and economic development. Therefore, it is important to clarify the pathogenic mechanisms of this disease and to provide a theoretical basis for the breeding of PBD-resistant sugarcane strains. The present study aimed to analyze the function of FsPL, a recently identified pectate lyase gene from F. sacchari. FsPL is a key virulence factor of F. sacchari that induces plant cell death. Our results provide new insights into the function of pectate lyase in host-pathogen interactions.
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Affiliation(s)
- Caixia Wang
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources, Guangxi Key Lab of Sugarcane Biology, Guangxi University, Nanning, China
| | - Zhen Huang
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources, Guangxi Key Lab of Sugarcane Biology, Guangxi University, Nanning, China
| | - Zhenzhen Duan
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources, Guangxi Key Lab of Sugarcane Biology, Guangxi University, Nanning, China
| | - Lixiang Zhu
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources, Guangxi Key Lab of Sugarcane Biology, Guangxi University, Nanning, China
| | - Ruolin Di
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources, Guangxi Key Lab of Sugarcane Biology, Guangxi University, Nanning, China
| | - Yixue Bao
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources, Guangxi Key Lab of Sugarcane Biology, Guangxi University, Nanning, China
| | | | - Qin Hu
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources, Guangxi Key Lab of Sugarcane Biology, Guangxi University, Nanning, China
| | - Baoshan Chen
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources, Guangxi Key Lab of Sugarcane Biology, Guangxi University, Nanning, China
| | - Muqing Zhang
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources, Guangxi Key Lab of Sugarcane Biology, Guangxi University, Nanning, China
- IRREC-IFAS, University of Florida, Fort Pierce, Florida, USA
| | - Wei Yao
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources, Guangxi Key Lab of Sugarcane Biology, Guangxi University, Nanning, China
- IRREC-IFAS, University of Florida, Fort Pierce, Florida, USA
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6
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Wang Y, Zhang X, Wang T, Zhou S, Liang X, Xie C, Kang Z, Chen D, Zheng L. The Small Secreted Protein FoSsp1 Elicits Plant Defenses and Negatively Regulates Pathogenesis in Fusarium oxysporum f. sp. cubense (Foc4). FRONTIERS IN PLANT SCIENCE 2022; 13:873451. [PMID: 35620677 PMCID: PMC9129915 DOI: 10.3389/fpls.2022.873451] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 03/30/2022] [Indexed: 05/13/2023]
Abstract
Fusarium wilt of banana (Musa spp.), a typical vascular wilt disease caused by the soil-borne fungus, Fusarium oxysporum f. sp. cubense race 4 (Foc4), seriously threatens banana production worldwide. Pathogens, including vascular wilt fungi, secrete small cysteine-rich proteins during colonization. Some of these proteins are required for pathogenicity. In this study, 106 small secretory proteins that contain a classic N-terminal signal peptide were identified using bioinformatic methods in Foc4. Among them, 11 proteins were selected to show transient expressions in tobacco. Interestingly, transient expression of FoSsp1 in tobacco, an uncharacterized protein (of 145 aa), induced necrotic cell death reactive oxygen burst, and callous deposition. Furthermore, the expression of FoSSP1 in Foc4 wild type (WT) was up-regulated during the stage of banana roots colonization. A split-marker approach was used to knock out FoSSP1 in the Foc4 WT strain. Compared with the WT, the deletion mutant Fossp1 was normal in growth rate but increased in conidiation and virulence. RT-qPCR analysis showed that the expression of four conidiation regulator genes in the Fossp1 deletion mutant was significantly decreased compared to the WT strain. In addition, the expression of four pathogenesis-related genes of bananas infected with Fossp1 deletion mutant was down-regulated in comparison with that of the WT. In summary, these results suggested that FoSSP1 is a putative elicitor that negatively regulates conidiation and pathogenicity in Foc4.
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Affiliation(s)
- Yuhua Wang
- Key Laboratory of Green Prevention and Control of Tropical Plant Disease and Pests, Ministry of Education and School of Plant Protection, Hainan University, Haikou, China
| | - Xinchun Zhang
- Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Tian Wang
- Key Laboratory of Green Prevention and Control of Tropical Plant Disease and Pests, Ministry of Education and School of Plant Protection, Hainan University, Haikou, China
| | - Siyu Zhou
- Key Laboratory of Green Prevention and Control of Tropical Plant Disease and Pests, Ministry of Education and School of Plant Protection, Hainan University, Haikou, China
| | - Xiaofei Liang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, China
| | - Changping Xie
- Key Laboratory of Green Prevention and Control of Tropical Plant Disease and Pests, Ministry of Education and School of Plant Protection, Hainan University, Haikou, China
| | - Zhensheng Kang
- State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, China
| | - Daipeng Chen
- Key Laboratory of Green Prevention and Control of Tropical Plant Disease and Pests, Ministry of Education and School of Plant Protection, Hainan University, Haikou, China
| | - Li Zheng
- Key Laboratory of Green Prevention and Control of Tropical Plant Disease and Pests, Ministry of Education and School of Plant Protection, Hainan University, Haikou, China
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Zhu M, Wang X, Zhou Y, Tan J, Zhou Y, Gao F. Small RNA Sequencing Revealed that miR4415, a Legume-Specific miRNA, was Involved in the Cold Acclimation of Ammopiptanthus nanus by Targeting an L-Ascorbate Oxidase Gene and Regulating the Redox State of Apoplast. Front Genet 2022; 13:870446. [PMID: 35444684 PMCID: PMC9013972 DOI: 10.3389/fgene.2022.870446] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Accepted: 03/07/2022] [Indexed: 11/13/2022] Open
Abstract
MicroRNAs (miRNAs) are small endogenous single-stranded RNAs that regulate plant growth, development, and environmental stress response posttranscriptionally. Ammopiptanthus nanus, a rare evergreen broad-leaved shrub in the temperate area of Central Asia, can tolerate freezing stress as low as -30 degrees centigrade in winter, and miRNA might be involved in the cold acclimation which enables A. nanus to obtain tolerance to freezing stress. Systematic identification and functional analysis of the miRNAs involved in the cold acclimation in A. nanus may promote understanding of the miRNA-mediated gene regulation network underlying cold acclimation. Here, based on small RNA and degradome sequencing, 256 miRNAs and 1,808 miRNA-target pairs were identified in A. nanus. A total of 39 cold-responsive miRNAs were identified, of which 29 were upregulated and ten were downregulated. These cold-responsive miRNAs may participate in the cold acclimation by regulating redox homeostasis (miR398, miR4415, and miR408), calcium signaling (miR5225 and miR5211), growth and development (miR159 and miR390), and small RNA-mediated gene silencing (miR168 and miR1515). We found that miR4415, a legume-specific miRNA, is involved in the cold acclimation of A. nanus by targeting an L-ascorbate oxidase gene and then regulating the redox state of the apoplast. Our study provides important data for understanding the regulatory role of miRNA in the cold acclimation of A. nanus.
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Affiliation(s)
- Ming Zhu
- Key Laboratory of Ecology and Environment in Minority Areas, National Ethnic Affairs Commission, Minzu University of China, Beijing, China.,Key Laboratory of Mass Spectrometry Imaging and Metabolomics, National Ethnic Affairs Commission, Minzu University of China, Beijing, China.,College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Xue Wang
- Beijing Center for Disease Prevention and Control, Beijing, China
| | - Yanqiu Zhou
- Key Laboratory of Ecology and Environment in Minority Areas, National Ethnic Affairs Commission, Minzu University of China, Beijing, China.,Key Laboratory of Mass Spectrometry Imaging and Metabolomics, National Ethnic Affairs Commission, Minzu University of China, Beijing, China.,College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Jinhua Tan
- Key Laboratory of Ecology and Environment in Minority Areas, National Ethnic Affairs Commission, Minzu University of China, Beijing, China.,Key Laboratory of Mass Spectrometry Imaging and Metabolomics, National Ethnic Affairs Commission, Minzu University of China, Beijing, China.,College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Yijun Zhou
- Key Laboratory of Ecology and Environment in Minority Areas, National Ethnic Affairs Commission, Minzu University of China, Beijing, China.,Key Laboratory of Mass Spectrometry Imaging and Metabolomics, National Ethnic Affairs Commission, Minzu University of China, Beijing, China.,College of Life and Environmental Sciences, Minzu University of China, Beijing, China
| | - Fei Gao
- Key Laboratory of Ecology and Environment in Minority Areas, National Ethnic Affairs Commission, Minzu University of China, Beijing, China.,Key Laboratory of Mass Spectrometry Imaging and Metabolomics, National Ethnic Affairs Commission, Minzu University of China, Beijing, China.,College of Life and Environmental Sciences, Minzu University of China, Beijing, China
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8
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Huang Z, Li H, Zhou Y, Bao Y, Duan Z, Wang C, Powell CA, Chen B, Zhang M, Yao W. Predication of the Effector Proteins Secreted by Fusarium sacchari Using Genomic Analysis and Heterogenous Expression. J Fungi (Basel) 2022; 8:jof8010059. [PMID: 35049998 PMCID: PMC8780550 DOI: 10.3390/jof8010059] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/27/2021] [Accepted: 01/05/2022] [Indexed: 01/01/2023] Open
Abstract
One of the causative agents of pokkah boeng disease (PBD), which affects sugarcane crops globally, is the fungus Fusarium sacchari. These fungal infections reduce sugar quality and yield, resulting in severe economic losses. Effector proteins play important roles in the interactions between pathogenic fungi and plants. Here, we used bioinformatic prediction approaches to identify 316 candidate secreted effector proteins (CSEPs) in the complete genome of F. sacchari. In total, 95 CSEPs contained known conserved structures, representing 40 superfamilies and 18 domains, while an additional 91 CSEPs contained seven known motifs. Of the 130 CSEPs containing no known domains or motifs, 14 contained one of four novel motifs. A heterogeneous expression system in Nicotiana benthamiana was used to investigate the functions of 163 CSEPs. Seven CSEPs suppressed BAX-triggered programmed cell death in N. benthamiana, while four caused cell death in N. benthamiana. The expression profiles of these eleven CSEPs during F. sacchari infection suggested that they may be involved in sugarcane-F. sacchari interaction. Our results establish a basis for further studies of the role of effector molecules in pathogen–sugarcane interactions, and provide a framework for future predictions of pathogen effector molecules.
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Affiliation(s)
- Zhen Huang
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources, Guangxi Key Lab of Sugarcane Biology, Guangxi University, Nanning 530005, China; (Z.H.); (H.L.); (Y.Z.); (Y.B.); (Z.D.); (C.W.); (B.C.)
| | - Huixue Li
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources, Guangxi Key Lab of Sugarcane Biology, Guangxi University, Nanning 530005, China; (Z.H.); (H.L.); (Y.Z.); (Y.B.); (Z.D.); (C.W.); (B.C.)
| | - Yuming Zhou
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources, Guangxi Key Lab of Sugarcane Biology, Guangxi University, Nanning 530005, China; (Z.H.); (H.L.); (Y.Z.); (Y.B.); (Z.D.); (C.W.); (B.C.)
| | - Yixue Bao
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources, Guangxi Key Lab of Sugarcane Biology, Guangxi University, Nanning 530005, China; (Z.H.); (H.L.); (Y.Z.); (Y.B.); (Z.D.); (C.W.); (B.C.)
| | - Zhenzhen Duan
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources, Guangxi Key Lab of Sugarcane Biology, Guangxi University, Nanning 530005, China; (Z.H.); (H.L.); (Y.Z.); (Y.B.); (Z.D.); (C.W.); (B.C.)
| | - Caixia Wang
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources, Guangxi Key Lab of Sugarcane Biology, Guangxi University, Nanning 530005, China; (Z.H.); (H.L.); (Y.Z.); (Y.B.); (Z.D.); (C.W.); (B.C.)
| | | | - Baoshan Chen
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources, Guangxi Key Lab of Sugarcane Biology, Guangxi University, Nanning 530005, China; (Z.H.); (H.L.); (Y.Z.); (Y.B.); (Z.D.); (C.W.); (B.C.)
| | - Muqing Zhang
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources, Guangxi Key Lab of Sugarcane Biology, Guangxi University, Nanning 530005, China; (Z.H.); (H.L.); (Y.Z.); (Y.B.); (Z.D.); (C.W.); (B.C.)
- IRREC-IFAS, University of Florida, Fort Pierce, FL 34945, USA;
- Correspondence: (M.Z.); (W.Y.)
| | - Wei Yao
- State Key Lab for Conservation and Utilization of Subtropical Agri-Biological Resources, Guangxi Key Lab of Sugarcane Biology, Guangxi University, Nanning 530005, China; (Z.H.); (H.L.); (Y.Z.); (Y.B.); (Z.D.); (C.W.); (B.C.)
- IRREC-IFAS, University of Florida, Fort Pierce, FL 34945, USA;
- Correspondence: (M.Z.); (W.Y.)
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