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Qi X, Niu Z, Xiao S, Waigi MG, Lin H, Sun K. Novel insights into the mechanism of laccase-driven rhizosphere humification for alleviating wheat 17β-estradiol contamination. ENVIRONMENT INTERNATIONAL 2024; 185:108576. [PMID: 38490070 DOI: 10.1016/j.envint.2024.108576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 02/18/2024] [Accepted: 03/11/2024] [Indexed: 03/17/2024]
Abstract
Global-scale crop contamination with environmental estrogens has posed a huge risk to agri-food safety and human health. Laccase is regarded as an unexceptionable biocatalyst for regulating pollution and expediting humification, but the knowledge of estrogen bioremediation and C storage strengthened by laccase-driven rhizosphere humification (LDRH) remains largely unknown. Herein, a greenhouse microcosm was performed to explore the migration and fate of 17β-estradiol (E2) in water-wheat (Triticum aestivum L.) matrices by LDRH. Compared to the non-added laccase, the pseudo-first-order decay rate constants of E2 in the rhizosphere solution after 10 and 50 μM exposures by LDRH increased from 0.03 and 0.02 h-1 to 0.36 and 0.09 h-1, respectively. Furthermore, LDRH conferred higher yield, polymerizability, O-containing groups, and functional-C signals in the humified precipitates, because it accelerated the formation of highly complex precipitates by radical-controlled continuous polymerization. In particular, not only did LDRH mitigate the phytotoxicity of E2, but it also diminished the metabolic load of E2 in wheat tissues. This was attributed to the rapid attenuation of E2 in the rhizosphere solution during LDRH, which limited E2 uptake and accumulation in each subcellular fraction of the wheat roots and shoots. Although several typical intermediate products such as estrone, estriol, and E2 oligomers were detected in roots, only small-molecule species were found in shoots, evidencing that the polymeric products of E2 were unable to be translocated acropetally due to the vast hydrophobicity and biounavailability. For the first time, our study highlights a novel, eco-friendly, and sustainable candidate for increasing the low-C treatment of organics in rhizosphere microenvironments and alleviating the potential risks of estrogenic contaminants in agroenvironments.
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Affiliation(s)
- Xuemin Qi
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Ziyan Niu
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Shenghua Xiao
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
| | - Michael Gatheru Waigi
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Hui Lin
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Kai Sun
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China; CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China.
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Hoheneder F, Steidele CE, Messerer M, Mayer KFX, Köhler N, Wurmser C, Heß M, Gigl M, Dawid C, Stam R, Hückelhoven R. Barley shows reduced Fusarium head blight under drought and modular expression of differentially expressed genes under combined stress. JOURNAL OF EXPERIMENTAL BOTANY 2023; 74:6820-6835. [PMID: 37668551 DOI: 10.1093/jxb/erad348] [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: 02/15/2023] [Accepted: 09/04/2023] [Indexed: 09/06/2023]
Abstract
Plants often face simultaneous abiotic and biotic stress conditions; however, physiological and transcriptional responses under such combined stress conditions are still not fully understood. Spring barley (Hordeum vulgare) is susceptible to Fusarium head blight (FHB), which is strongly affected by weather conditions. We therefore studied the potential influence of drought on FHB severity and plant responses in three varieties of different susceptibility. We found strongly reduced FHB severity in susceptible varieties under drought. The number of differentially expressed genes (DEGs) and strength of transcriptomic regulation reflected the concentrations of physiological stress markers such as abscisic acid or fungal DNA contents. Infection-related gene expression was associated with susceptibility rather than resistance. Weighted gene co-expression network analysis revealed 18 modules of co-expressed genes that reflected the pathogen- or drought-response in the three varieties. A generally infection-related module contained co-expressed genes for defence, programmed cell death, and mycotoxin detoxification, indicating that the diverse genotypes used a similar defence strategy towards FHB, albeit with different degrees of success. Further, DEGs showed co-expression in drought- or genotype-associated modules that correlated with measured phytohormones or the osmolyte proline. The combination of drought stress with infection led to the highest numbers of DEGs and resulted in a modular composition of the single-stress responses rather than a specific transcriptional output.
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Affiliation(s)
- Felix Hoheneder
- Chair of Phytopathology, TUM School of Life Sciences, HEF World Agricultural Systems Center, Technical University of Munich, Emil-Ramann Str. 2, 85354 Freising-Weihenstephan, Germany
| | - Christina E Steidele
- Chair of Phytopathology, TUM School of Life Sciences, HEF World Agricultural Systems Center, Technical University of Munich, Emil-Ramann Str. 2, 85354 Freising-Weihenstephan, Germany
| | - Maxim Messerer
- Plant Genome and Systems Biology, Helmholtz Center Munich, German Research Center for Environmental Health, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
| | - Klaus F X Mayer
- Plant Genome and Systems Biology, Helmholtz Center Munich, German Research Center for Environmental Health, Ingolstädter Landstraße 1, 85764 Neuherberg, Germany
| | - Nikolai Köhler
- Chair of Phytopathology, TUM School of Life Sciences, HEF World Agricultural Systems Center, Technical University of Munich, Emil-Ramann Str. 2, 85354 Freising-Weihenstephan, Germany
- LipiTUM, Chair of Experimental Bioinformatics, TUM School of Life Sciences, Technical University of Munich, Maximus-von-Imhof Forum 3, 85354 Freising-Weihenstephan, Germany
| | - Christine Wurmser
- Chair of Animal Physiology and Immunology, TUM School of Life Sciences, Technical University of Munich, Weihenstephaner Berg 3/I, 85354 Freising-Weihenstephan, Germany
| | - Michael Heß
- Chair of Phytopathology, TUM School of Life Sciences, HEF World Agricultural Systems Center, Technical University of Munich, Emil-Ramann Str. 2, 85354 Freising-Weihenstephan, Germany
| | - Michael Gigl
- Chair of Food Chemistry and Molecular Sensory Science, TUM School of Life Sciences, Technical University of Munich, Lise-Meitner-Straße 34, 85354 Freising-Weihenstephan, Germany
| | - Corinna Dawid
- Chair of Food Chemistry and Molecular Sensory Science, TUM School of Life Sciences, Technical University of Munich, Lise-Meitner-Straße 34, 85354 Freising-Weihenstephan, Germany
| | - Remco Stam
- Chair of Phytopathology, TUM School of Life Sciences, HEF World Agricultural Systems Center, Technical University of Munich, Emil-Ramann Str. 2, 85354 Freising-Weihenstephan, Germany
- Institute of Phytopathology, Christian Albrecht University of Kiel, Hermann-Rodewald-Straße 9, 24118 Kiel, Germany
| | - Ralph Hückelhoven
- Chair of Phytopathology, TUM School of Life Sciences, HEF World Agricultural Systems Center, Technical University of Munich, Emil-Ramann Str. 2, 85354 Freising-Weihenstephan, Germany
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Hay WT, Anderson JA, Garvin DF, McCormick SP, Busman M, Vaughan MM. Elevated CO 2 Can Worsen Fusarium Head Blight Disease Severity in Wheat but the Fhb1 QTL Provides Reliable Disease Resistance. PLANTS (BASEL, SWITZERLAND) 2023; 12:3527. [PMID: 37895995 PMCID: PMC10610529 DOI: 10.3390/plants12203527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 10/03/2023] [Accepted: 10/07/2023] [Indexed: 10/29/2023]
Abstract
Fusarium head blight (FHB) is a destructive fungal disease of wheat that causes significant economic loss due to lower yields and the contamination of grain with fungal toxins (mycotoxins), particularly deoxynivalenol (DON). FHB disease spread and mycotoxin contamination has been shown to worsen at elevated CO2, therefore, it is important to identify climate-resilient FHB resistance. This work evaluates whether wheat with the Fhb1 quantitative trait locus (QTL), the most widely deployed FHB resistance locus in wheat breeding programs, provides reliable disease resistance at elevated CO2. Near-isogenic wheat lines (NILs) derived from either a highly FHB susceptible or a more FHB resistant genetic background, with or without the Fhb1 QTL, were grown in growth chambers at ambient (400 ppm) and elevated (1000 ppm) CO2 conditions. Wheat was inoculated with Fusarium graminearum and evaluated for FHB severity. At elevated CO2, the NILs derived from more FHB-resistant wheat had increased disease spread, greater pathogen biomass and mycotoxin contamination, and lower rates of DON detoxification; this was not observed in wheat from a FHB susceptible genetic background. The Fhb1 QTL was not associated with increased disease severity in wheat grown at elevated CO2 and provided reliable disease resistance.
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Affiliation(s)
- William T. Hay
- USDA, Agricultural Research Service, National Center for Agricultural Utilization Research, Mycotoxin Prevention and Applied Microbiology Research Unit, 1815 N, University Street, Peoria, IL 61604, USA; (S.P.M.); (M.B.); (M.M.V.)
| | - James A. Anderson
- Department of Agronomy & Plant Genetics, University of Minnesota, St. Paul, MN 55108, USA; (J.A.A.); (D.F.G.)
| | - David F. Garvin
- Department of Agronomy & Plant Genetics, University of Minnesota, St. Paul, MN 55108, USA; (J.A.A.); (D.F.G.)
| | - Susan P. McCormick
- USDA, Agricultural Research Service, National Center for Agricultural Utilization Research, Mycotoxin Prevention and Applied Microbiology Research Unit, 1815 N, University Street, Peoria, IL 61604, USA; (S.P.M.); (M.B.); (M.M.V.)
| | - Mark Busman
- USDA, Agricultural Research Service, National Center for Agricultural Utilization Research, Mycotoxin Prevention and Applied Microbiology Research Unit, 1815 N, University Street, Peoria, IL 61604, USA; (S.P.M.); (M.B.); (M.M.V.)
| | - Martha M. Vaughan
- USDA, Agricultural Research Service, National Center for Agricultural Utilization Research, Mycotoxin Prevention and Applied Microbiology Research Unit, 1815 N, University Street, Peoria, IL 61604, USA; (S.P.M.); (M.B.); (M.M.V.)
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Fanelli G, Kuzmanović L, Giovenali G, Tundo S, Mandalà G, Rinalducci S, Ceoloni C. Untargeted Metabolomics Reveals a Multi-Faceted Resistance Response to Fusarium Head Blight Mediated by the Thinopyrum elongatum Fhb7E Locus Transferred via Chromosome Engineering into Wheat. Cells 2023; 12:1113. [PMID: 37190021 PMCID: PMC10136595 DOI: 10.3390/cells12081113] [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: 02/27/2023] [Revised: 04/04/2023] [Accepted: 04/04/2023] [Indexed: 05/17/2023] Open
Abstract
The Thinopyrum elongatum Fhb7E locus has been proven to confer outstanding resistance to Fusarium Head Blight (FHB) when transferred into wheat, minimizing yield loss and mycotoxin accumulation in grains. Despite their biological relevance and breeding implications, the molecular mechanisms underlying the resistant phenotype associated with Fhb7E have not been fully uncovered. To gain a broader understanding of processes involved in this complex plant-pathogen interaction, we analysed via untargeted metabolomics durum wheat (DW) rachises and grains upon spike inoculation with Fusarium graminearum (Fg) and water. The employment of DW near-isogenic recombinant lines carrying or lacking the Th. elongatum chromosome 7E region including Fhb7E on their 7AL arm, allowed clear-cut distinction between differentially accumulated disease-related metabolites. Besides confirming the rachis as key site of the main metabolic shift in plant response to FHB, and the upregulation of defence pathways (aromatic amino acid, phenylpropanoid, terpenoid) leading to antioxidants and lignin accumulation, novel insights were revealed. Fhb7E conferred constitutive and early-induced defence response, in which specific importance of polyamine biosynthesis, glutathione and vitamin B6 metabolisms, along with presence of multiple routes for deoxynivalenol detoxification, was highlighted. The results suggested Fhb7E to correspond to a compound locus, triggering a multi-faceted plant response to Fg, effectively limiting Fg growth and mycotoxin production.
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Affiliation(s)
- Giuseppina Fanelli
- Department of Ecological and Biological Sciences (DEB), University of Tuscia, 01100 Viterbo, Italy; (G.F.)
- Department of Agriculture and Forest Sciences (DAFNE), University of Tuscia, 01100 Viterbo, Italy; (L.K.); (G.G.); (G.M.)
| | - Ljiljana Kuzmanović
- Department of Agriculture and Forest Sciences (DAFNE), University of Tuscia, 01100 Viterbo, Italy; (L.K.); (G.G.); (G.M.)
| | - Gloria Giovenali
- Department of Agriculture and Forest Sciences (DAFNE), University of Tuscia, 01100 Viterbo, Italy; (L.K.); (G.G.); (G.M.)
| | - Silvio Tundo
- Department of Land, Environment, Agriculture and Forestry (TESAF), University of Padova, 35020 Legnaro, Italy; (S.T.)
| | - Giulia Mandalà
- Department of Agriculture and Forest Sciences (DAFNE), University of Tuscia, 01100 Viterbo, Italy; (L.K.); (G.G.); (G.M.)
| | - Sara Rinalducci
- Department of Ecological and Biological Sciences (DEB), University of Tuscia, 01100 Viterbo, Italy; (G.F.)
| | - Carla Ceoloni
- Department of Agriculture and Forest Sciences (DAFNE), University of Tuscia, 01100 Viterbo, Italy; (L.K.); (G.G.); (G.M.)
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Bai Y, Ali S, Liu S, Zhou J, Tang Y. Characterization of plant laccase genes and their functions. Gene 2023; 852:147060. [PMID: 36423777 DOI: 10.1016/j.gene.2022.147060] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Revised: 11/11/2022] [Accepted: 11/16/2022] [Indexed: 11/23/2022]
Abstract
Laccase is a copper-containing polyphenol oxidase found in different organisms. The multigene family that encodes laccases is widely distributed in plant genomes. Plant laccases oxidize monolignols to produce lignin which is important for plant growth and stress responses. Industrial applications of fungal and bacterial laccases are extensively explored and addressed. Recently many studies have focused on the significance of plant laccase, particularly in crop yield, and its functions in different environmental conditions. This review summarizes the transcriptional and posttranscriptional regulation of plant laccase genes and their functions in plant growth and development. It especially describes the responses of laccase genes to various stresses and their contributions to plant biotic and abiotic stress resistance. In-depth explanations and scientific advances will serve as foundations for research into plant laccase genes' function, mechanism, and possible applications.
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Affiliation(s)
- Yongsheng Bai
- Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Key Laboratory of Marine Bioresource & Eco-environmental Science, Longhua Institute of Innovative Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, Guangdong, PR China
| | - Shahid Ali
- Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Key Laboratory of Marine Bioresource & Eco-environmental Science, Longhua Institute of Innovative Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, Guangdong, PR China; Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Shuai Liu
- Shaanxi Academy of Traditional Chinese Medicine, Xi'an, Shaanxi 710003, China
| | - Jiajie Zhou
- Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Key Laboratory of Marine Bioresource & Eco-environmental Science, Longhua Institute of Innovative Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, Guangdong, PR China
| | - Yulin Tang
- Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Key Laboratory of Marine Bioresource & Eco-environmental Science, Longhua Institute of Innovative Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, Guangdong, PR China.
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Ninkuu V, Yan J, Fu Z, Yang T, Ziemah J, Ullrich MS, Kuhnert N, Zeng H. Lignin and Its Pathway-Associated Phytoalexins Modulate Plant Defense against Fungi. J Fungi (Basel) 2022; 9:jof9010052. [PMID: 36675873 PMCID: PMC9865837 DOI: 10.3390/jof9010052] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 12/26/2022] [Accepted: 12/27/2022] [Indexed: 12/31/2022] Open
Abstract
Fungi infections cause approximately 60-70% yield loss through diseases such as rice blast, powdery mildew, Fusarium rot, downy mildew, etc. Plants naturally respond to these infections by eliciting an array of protective metabolites to confer physical or chemical protection. Among plant metabolites, lignin, a phenolic compound, thickens the middle lamella and the secondary cell walls of plants to curtail fungi infection. The biosynthesis of monolignols (lignin monomers) is regulated by genes whose transcript abundance significantly improves plant defense against fungi. The catalytic activities of lignin biosynthetic enzymes also contribute to the accumulation of other defense compounds. Recent advances focus on modifying the lignin pathway to enhance plant growth and defense against pathogens. This review presents an overview of monolignol regulatory genes and their contributions to fungi immunity, as reported over the last five years. This review expands the frontiers in lignin pathway engineering to enhance plant defense.
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Affiliation(s)
- Vincent Ninkuu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China
| | - Jianpei Yan
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China
| | - Zenchao Fu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China
| | - Tengfeng Yang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China
| | - James Ziemah
- Department of Life Sciences and Chemistry, Jacobs University, College Ring 1, 28759 Bremen, Germany
| | - Matthias S. Ullrich
- Department of Life Sciences and Chemistry, Jacobs University, College Ring 1, 28759 Bremen, Germany
| | - Nikolai Kuhnert
- Department of Life Sciences and Chemistry, Jacobs University, College Ring 1, 28759 Bremen, Germany
| | - Hongmei Zeng
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China
- Correspondence:
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Zhong X, Li M, Zhang M, Feng Y, Zhang H, Tian H. Genome-wide analysis of the laccase gene family in wheat and relationship with arbuscular mycorrhizal colonization. PLANTA 2022; 257:15. [PMID: 36528718 DOI: 10.1007/s00425-022-04048-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 12/08/2022] [Indexed: 06/17/2023]
Abstract
We identified 156 laccase genes belonging to 11 subfamilies in the wheat genome, and the natural variation of laccase genes significantly affected the development of wheat-arbuscular mycorrhizal symbiosis. Laccases (LACs) have a variety of functions in plant lignification, cell elongation and stress responses. This study aimed to reveal the phylogeny, chromosomal spatial distribution, coexpression and evolution of LAC genes in the wheat genome and to investigate the possible roles of LAC genes during arbuscular mycorrhizal (AM) symbiosis. The genomic characteristics of LAC genes were analyzed by using bioinformatics analysis methods, and the polymorphisms of LAC genes were analyzed by using a diverse wheat panel composed of 289 wheat cultivars. We identified 156 LAC genes belonging to 11 subfamilies in the wheat genome, and segmental duplication dominated the amplification of the LAC gene family in the wheat genome. LACs are dominantly located in the R2 region of wheat chromosomes. Some LACs are collinear with the characterized LACs in Arabidopsis thaliana or rice. A number of genes encoding transcription factors, kinases, and phosphatases were coexpressed with LAC genes in wheat. TaLACs may be potential targets for some miRNAs. Most TaLACs are mainly expressed in the roots and stems of plants. The expression of TaLACs could be regulated by the inoculation of Fusarium graminearum or AM fungi. The polymorphisms of TaLACs mainly accumulate by random drift instead of by selection. Through candidate gene association analysis, we found that the natural variations in TaLACs significantly affected root colonization by AM fungi. The present study provides useful information for further study of the biological functions of LAC genes in wheat, especially the roles of LAC genes during the development of AM symbiosis.
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Affiliation(s)
- Xiong Zhong
- Key Laboratory of Plant Nutrition and Agri-Environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Mengjiao Li
- Key Laboratory of Plant Nutrition and Agri-Environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Mingming Zhang
- Key Laboratory of Plant Nutrition and Agri-Environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Yang Feng
- Key Laboratory of Plant Nutrition and Agri-Environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Hui Zhang
- Key Laboratory of Plant Nutrition and Agri-Environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Hui Tian
- Key Laboratory of Plant Nutrition and Agri-Environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi, China.
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Wang H, Han Y, Wu C, Zhang B, Zhao Y, Zhu J, Han Y, Wang J. Comparative transcriptome profiling of resistant and susceptible foxtail millet responses to Sclerospora graminicola infection. BMC PLANT BIOLOGY 2022; 22:567. [PMID: 36471245 PMCID: PMC9724433 DOI: 10.1186/s12870-022-03963-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 11/25/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Downy mildew of foxtail millet, which is caused by the biotrophic oomycete Sclerospora graminicola (Sacc.) Schroeter, is one of the most disruptive diseases. The foxtail millet-S. graminicola interaction is largely unexplored. Transcriptome sequencing technology can help to reveal the interaction mechanism between foxtail millet and its pathogens. RESULTS Transmission electron microscopy observations of leaves infected with S. graminicola showed that the structures of organelles in the host cells gradually became deformed and damaged, or even disappeared from the 3- to 7-leaf stages. However, organelles in the leaves of resistant variety were rarely damaged. Moreover, the activities of seven cell wall degrading enzymes in resistant and susceptible varieties were also quite different after pathogen induction and most of enzymes activities were significantly higher in the susceptible variety JG21 than in the resistant variety G1 at all stages. Subsequently, we compared the transcriptional profiles between the G1 and JG21 in response to S. graminicola infection at 3-, 5-, and 7-leaf stages using RNA-Seq technology. A total of 473 and 1433 differentially expressed genes (DEGs) were identified in the resistant and susceptible varieties, respectively. The pathway analysis of the DEGs showed that the highly enriched categories were related to glutathione metabolism, plant hormone signalling, phenylalanine metabolism, and cutin, suberin and wax biosynthesis. Some defence-related genes were also revealed in the DEGs, including leucine-rich protein kinase, Ser/Thr protein kinase, peroxidase, cell wall degrading enzymes, laccases and auxin response genes. Our results also confirmed the linkage of transcriptomic data with qRT-PCR data. In particular, LRR protein kinase encoded by Seita.8G131800, Ser/Thr protein kinase encoded by Seita.2G024900 and Seita. 2G024800, which have played an essential resistant role during the infection by S. graminicola. CONCLUSIONS Transcriptome sequencing revealed that host resistance to S. graminicola was likely due to the activation of defence-related genes, such as leucine-rich protein kinase and Ser/Thr protein kinase. Our study identified pathways and genes that contribute to the understanding of the interaction between foxtail millet and S. graminicola at the transcriptomic level. The results will help us better understand the resistance mechanism of foxtail millet against S. graminicola.
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Affiliation(s)
- He Wang
- College of Plant Protection, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Yanqing Han
- College of Plant Protection, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Caijuan Wu
- College of Agriculture, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Baojun Zhang
- College of Plant Protection, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Yaofei Zhao
- College of Agriculture, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Jiao Zhu
- College of Plant Protection, Shanxi Agricultural University, Taigu, 030801, Shanxi, China
| | - Yuanhuai Han
- College of Agriculture, Shanxi Agricultural University, Taigu, 030801, Shanxi, China.
- Shanxi Key Laboratory of Germplasm Innovation and Molecular Breeding of Minor Crop, Taiyuan, 030031, China.
| | - Jianming Wang
- College of Plant Protection, Shanxi Agricultural University, Taigu, 030801, Shanxi, China.
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Hay WT, Anderson JA, Garvin DF, McCormick SP, Vaughan MM. Fhb1 disease resistance QTL does not exacerbate wheat grain protein loss at elevated CO 2. FRONTIERS IN PLANT SCIENCE 2022; 13:1034406. [PMID: 36518513 PMCID: PMC9742602 DOI: 10.3389/fpls.2022.1034406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 11/11/2022] [Indexed: 06/17/2023]
Abstract
Fusarium head blight, a devastating cereal crop disease, can cause significant yield losses and contaminate grain with hazardous fungal toxins. Concerningly, recent evidence indicates that substantial grain protein content loss is likely to occur in wheat that is moderately resistant to head blight when it is grown at elevated CO2. Although wheat breeders in North America utilize a number of resistance sources and genes to reduce pathogen damage, the Fhb1 gene is widely deployed. To determine whether Fhb1 is associated with the protein content loss at elevated CO2, twelve near-isogenic spring wheat lines from either a susceptible or moderately susceptible genetic background, and with, or without the Fhb1 QTL, were grown at ambient and elevated CO2 conditions. The near-isogenic lines were evaluated for differences in physiology, productivity, and grain protein content. Our results showed that the Fhb1 QTL did not have any significant effect on plant growth, development, yield, or grain protein content at ambient or elevated CO2. Therefore, other factors in the moderately susceptible wheat genetic background are likely responsible for the more severe grain protein loss at elevated CO2.
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Affiliation(s)
- William T. Hay
- Mycotoxin Prevention and Applied Microbiology Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, USDA, Peoria, IL, United States
| | - James A. Anderson
- Department of Agronomy & Plant Genetics, University of Minnesota, St. Paul, MN, United States
| | - David F. Garvin
- Department of Agronomy & Plant Genetics, University of Minnesota, St. Paul, MN, United States
| | - Susan P. McCormick
- Mycotoxin Prevention and Applied Microbiology Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, USDA, Peoria, IL, United States
| | - Martha M. Vaughan
- Mycotoxin Prevention and Applied Microbiology Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, USDA, Peoria, IL, United States
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Kushalappa AC, Hegde NG, Gunnaiah R, Sathe A, Yogendra KN, Ajjamada L. Apoptotic-like PCD inducing HRC gene when silenced enhances multiple disease resistance in plants. Sci Rep 2022; 12:20402. [PMID: 36437285 PMCID: PMC9701806 DOI: 10.1038/s41598-022-24831-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Accepted: 11/21/2022] [Indexed: 11/29/2022] Open
Abstract
Programmed cell death (PCD) plays an important role in plant environmental stress and has the potential to be manipulated to enhance disease resistance. Plants have innate immunity and, following pathogen perception, the host induces a Hypersensitive Response PCD (HR-PCD), leading to pattern (PTI) or effector triggered immunity (ETI). Here we report a non-HR type or Apoptotic-Like PCD (AL-PCD) in pathogen infected wheat and potato based on apoptotic-like DNA fragmentation. A deletion mutation in the gene encoding histidine rich calcium binding protein (TaHRC) in FHB-resistant wheat (R-NIL) failed to induce AL-PCD. Similarly, the CRISPR-Cas9 based silencing of StHRC gene in Russet Burbank potato failed to induce apoptotic-like DNA fragmentation, proved based on DNA laddering and TUNEL assays. The absence of AL-PCD in wheat R-NIL reduced pathogen biomass and mycotoxins, increasing the accumulation of resistance metabolites and FHB-resistance, and in potato it enhanced resistance to multiple pathogens. In addition, the reduced expressions of metacaspase (StMC7) and Ca2+ dependent endonuclease 2 (StCaN2) genes in potato with Sthrc indicated an involvement of a hierarchy of genes in the induction of AL-PCD. The HRC in commercial varieties of different crops, if functional, can be silenced by genome editing possibly to enhance resistance to multiple pathogens.
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Affiliation(s)
- A. C. Kushalappa
- grid.14709.3b0000 0004 1936 8649Plant Science Department, McGill University, Ste. Anne de Bellevue, Quebec, H9X3V9 Canada
| | - N. G. Hegde
- grid.14709.3b0000 0004 1936 8649Plant Science Department, McGill University, Ste. Anne de Bellevue, Quebec, H9X3V9 Canada
| | - R. Gunnaiah
- grid.14709.3b0000 0004 1936 8649Plant Science Department, McGill University, Ste. Anne de Bellevue, Quebec, H9X3V9 Canada ,grid.449749.30000 0004 1772 7097Present Address: University of Horticultural Sciences, Bagalkot, Karnataka India
| | - A. Sathe
- grid.14709.3b0000 0004 1936 8649Plant Science Department, McGill University, Ste. Anne de Bellevue, Quebec, H9X3V9 Canada
| | - K. N. Yogendra
- grid.419337.b0000 0000 9323 1772International Crops Research Institute for the Semi-Arid Tropics, Hyderabad, Telangana India
| | - L. Ajjamada
- grid.14709.3b0000 0004 1936 8649Division of Hematology-OncologyJewish General Hospital, McGill University, Montreal, QC Canada
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11
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Kushalappa AC, Hegde NG, Yogendra KN. Metabolic pathway genes for editing to enhance multiple disease resistance in plants. JOURNAL OF PLANT RESEARCH 2022; 135:705-722. [PMID: 36036859 DOI: 10.1007/s10265-022-01409-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 08/22/2022] [Indexed: 06/15/2023]
Abstract
Diseases are one of the major constraints in commercial crop production. Genetic diversity in varieties is the best option to manage diseases. Molecular marker-assisted breeding has produced hundreds of varieties with good yields, but the resistance level is not satisfactory. With the advent of whole genome sequencing, genome editing is emerging as an excellent option to improve the inadequate traits in these varieties. Plants produce thousands of antimicrobial secondary metabolites, which as polymers and conjugates are deposited to reinforce the secondary cell walls to contain the pathogen to an initial infection area. The resistance metabolites or the structures produced from them by plants are either constitutive (CR) or induced (IR), following pathogen invasion. The production of each resistance metabolite is controlled by a network of biosynthetic R genes, which are regulated by a hierarchy of R genes. A commercial variety also has most of these R genes, as in resistant, but a few may be mutated (SNPs/InDels). A few mutated genes, in one or more metabolic pathways, depending on the host-pathogen interaction, can be edited, and stacked to increase resistance metabolites or structures produced by them, to achieve required levels of multiple pathogen resistance under field conditions.
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Affiliation(s)
- Ajjamada C Kushalappa
- Plant Science Department, McGill University, Ste.-Anne-de-Bellevue, QC, H9X 3V9, Canada.
| | - Niranjan G Hegde
- Plant Science Department, McGill University, Ste.-Anne-de-Bellevue, QC, H9X 3V9, Canada
| | - Kalenahalli N Yogendra
- International Crops Research Institute for the Semi-Arid Tropics, Hyderabad, Telangana, India
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12
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Arms Race between the Host and Pathogen Associated with Fusarium Head Blight of Wheat. Cells 2022; 11:cells11152275. [PMID: 35892572 PMCID: PMC9332245 DOI: 10.3390/cells11152275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 07/10/2022] [Accepted: 07/19/2022] [Indexed: 12/10/2022] Open
Abstract
Fusarium head blight (FHB), or scab, caused by Fusarium species, is an extremely destructive fungal disease in wheat worldwide. In recent decades, researchers have made unremitting efforts in genetic breeding and control technology related to FHB and have made great progress, especially in the exploration of germplasm resources resistant to FHB; identification and pathogenesis of pathogenic strains; discovery and identification of disease-resistant genes; biochemical control, and so on. However, FHB burst have not been effectively controlled and thereby pose increasingly severe threats to wheat productivity. This review focuses on recent advances in pathogenesis, resistance quantitative trait loci (QTLs)/genes, resistance mechanism, and signaling pathways. We identify two primary pathogenetic patterns of Fusarium species and three significant signaling pathways mediated by UGT, WRKY, and SnRK1, respectively; many publicly approved superstar QTLs and genes are fully summarized to illustrate the pathogenetic patterns of Fusarium species, signaling behavior of the major genes, and their sophisticated and dexterous crosstalk. Besides the research status of FHB resistance, breeding bottlenecks in resistant germplasm resources are also analyzed deeply. Finally, this review proposes that the maintenance of intracellular ROS (reactive oxygen species) homeostasis, regulated by several TaCERK-mediated theoretical patterns, may play an important role in plant response to FHB and puts forward some suggestions on resistant QTL/gene mining and molecular breeding in order to provide a valuable reference to contain FHB outbreaks in agricultural production and promote the sustainable development of green agriculture.
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13
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Lee S, Vemanna RS, Oh S, Rojas CM, Oh Y, Kaundal A, Kwon T, Lee HK, Senthil-Kumar M, Mysore KS. Functional role of formate dehydrogenase 1 (FDH1) for host and nonhost disease resistance against bacterial pathogens. PLoS One 2022; 17:e0264917. [PMID: 35594245 PMCID: PMC9122214 DOI: 10.1371/journal.pone.0264917] [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: 01/03/2021] [Accepted: 02/21/2022] [Indexed: 11/24/2022] Open
Abstract
Nonhost disease resistance is the most common type of plant defense mechanism against potential pathogens. In the present study, the metabolic enzyme formate dehydrogenase 1 (FDH1) was identified to associate with nonhost disease resistance in Nicotiana benthamiana and Arabidopsis thaliana. In Arabidopsis, AtFDH1 was highly upregulated in response to both host and nonhost bacterial pathogens. The Atfdh1 mutants were compromised in nonhost resistance, basal resistance, and gene-for-gene resistance. The expression patterns of salicylic acid (SA) and jasmonic acid (JA) marker genes after pathogen infections in Atfdh1 mutant indicated that both SA and JA are involved in the FDH1-mediated plant defense response to both host and nonhost bacterial pathogens. Previous studies reported that FDH1 localizes to mitochondria, or both mitochondria and chloroplasts. Our results showed that the AtFDH1 mainly localized to mitochondria, and the expression level of FDH1 was drastically increased upon infection with host or nonhost pathogens. Furthermore, we identified the potential co-localization of mitochondria expressing FDH1 with chloroplasts after the infection with nonhost pathogens in Arabidopsis. This finding suggests the possible role of FDH1 in mitochondria and chloroplasts during defense responses against bacterial pathogens in plants.
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Affiliation(s)
- Seonghee Lee
- Noble Research Institute, LLC, Ardmore, OK, United States of America
- Gulf Coast Research and Education Center, Institute of Food and Agricultural Science, University of Florida, Wimauma, FL, United States of America
| | - Ramu S. Vemanna
- Noble Research Institute, LLC, Ardmore, OK, United States of America
| | - Sunhee Oh
- Noble Research Institute, LLC, Ardmore, OK, United States of America
| | | | - Youngjae Oh
- Gulf Coast Research and Education Center, Institute of Food and Agricultural Science, University of Florida, Wimauma, FL, United States of America
| | - Amita Kaundal
- Noble Research Institute, LLC, Ardmore, OK, United States of America
| | - Taegun Kwon
- Noble Research Institute, LLC, Ardmore, OK, United States of America
| | - Hee-Kyung Lee
- Noble Research Institute, LLC, Ardmore, OK, United States of America
| | | | - Kirankumar S. Mysore
- Noble Research Institute, LLC, Ardmore, OK, United States of America
- Institute for Agricultural Biosciences, Oklahoma State University, Ardmore, OK, United States of America
- Department of Biochemistry and Molecular Biology, Oklahoma State University, Stillwater, OK, United States of America
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14
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Sun Z, Zhou Y, Hu Y, Jiang N, Hu S, Li L, Li T. Identification of Wheat LACCASEs in Response to Fusarium graminearum as Potential Deoxynivalenol Trappers. FRONTIERS IN PLANT SCIENCE 2022; 13:832800. [PMID: 35360333 PMCID: PMC8964265 DOI: 10.3389/fpls.2022.832800] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 02/02/2022] [Indexed: 06/14/2023]
Abstract
Fusarium graminearum (F. graminearum) can cause huge yield reductions and contamination of grain with deoxynivalenol (DON), and thus is one of the most problematic pathogen of wheat worldwide. Although great efforts have been paid and great achievements have been made to control the pathogens, there is still a wide gap for understanding the mechanism underlying F. graminearum resistance. Plant LACCASEs (LACs) catalyze the oxidative polymerization of monolignols by reinforcing cell-wall of various cell types to provide mechanical support, xylem sap transportation, and defense against pest and pathogens. To date, little has been known about LAC genes in bread wheat and their potential roles in wheat-F. graminearum interaction. Through systematic analysis of the genome-wide homologs and transcriptomes of wheat, a total of 95 Triticum aestivum laccases (TaLACs) were identified, and 14 of them were responsive to F. graminearum challenge. 3D structure modelings of the 14 TaLAC proteins showed that only TaLAC78 contains the entire activity center for oxidation and the others lack the type 1 copper ion ligand (T1Cu). Both amino acid sequence alignment and three-dimensional reconstruction after amino acid mutation showed that the loss of T1Cu is not only related to variation of the key amino acid coordinating T1Cu, but also closely related to the flanking amino acids. Significantly differential temporal expression patterns of TaLACs suggested that their subfunctionalization might occur. Promoter array analysis indicated that the induction of TaLACs may be closely associated with salicylic acid signaling, dehydration, and low-oxygen stress under F. graminearum infection. Molecular docking simulation demonstrated that TaLACs can not only catalyze lignin as a substrate, but also interact with DON, which may be docked into the binding position of the monolignols, where the LACs recognize substrates. The current study provides clues for exploring the novel functions of TaLACs in wheat resistance to F. graminearum, and TaLACs maybe candidates for conferring a high level of resistance against F. graminearum in wheat.
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15
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Arif MAR, Waheed MQ, Lohwasser U, Shokat S, Alqudah AM, Volkmar C, Börner A. Genetic Insight Into the Insect Resistance in Bread Wheat Exploiting the Untapped Natural Diversity. Front Genet 2022; 13:828905. [PMID: 35222543 PMCID: PMC8874221 DOI: 10.3389/fgene.2022.828905] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Accepted: 01/11/2022] [Indexed: 11/13/2022] Open
Abstract
Climate change is an undeniable threat to sustainable wheat production in the future as an increased temperature will significantly increase grain loss due to the increased number of generations per season of multivoltine species that are detrimental to plants. Among insects, orange wheat blossom midge (OWBM), yellow wheat blossom midge (YWBM), saddle gall midge (SGM), thrips, and frit fly (FF) are important wheat pests in the European environments, which can be managed by the development of resistant cultivars. This involves the identification, confirmation, and incorporation of insect resistance sources into new high-yielding cultivars. We used two diverse and unrelated wheat [winter wheat (WW) and spring wheat (SW)] panels to associate single-nucleotide polymorphism (SNP) markers with the mentioned pests using the tools of association mapping. All in all, a total of 645 and 123 significant associations were detected in WW and SW, respectively, which were confined to 246 quantitative trait loci. Many candidate genes were identified using the BLAST analysis of the sequences of associated SNPs. Some of them are involved in controlling the physical structures of plants such as stomatal immunity and closure, cuticular wax in leaf blade, whereas others are involved in the production of certain enzymes in response to biotic and abiotic stresses. To our knowledge, this is the first detailed investigation that deals with YWBM, SGM, thrips, and FF resistance genetics using the natural variation in wheat. The reported germplasm is also readily available to breeders across the world that can make rational decisions to breed for the pest resilience of their interest by including the resistant genotypes being reported.
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Affiliation(s)
- Mian Abdur Rehman Arif
- Wheat Breeding Group, Plant Breeding and Genetics Division, Nuclear Institute for Agriculture and Biology, Faisalabad, Pakistan
- *Correspondence: Mian Abdur Rehman Arif, ; Andreas Börner,
| | - Muhammad Qandeel Waheed
- Wheat Breeding Group, Plant Breeding and Genetics Division, Nuclear Institute for Agriculture and Biology, Faisalabad, Pakistan
| | - Ulrike Lohwasser
- Leibniz Institute of Plant Genetics and Crop Plant Research, Gatersleben, Germany
| | - Sajid Shokat
- Wheat Breeding Group, Plant Breeding and Genetics Division, Nuclear Institute for Agriculture and Biology, Faisalabad, Pakistan
| | - Ahmad M. Alqudah
- Department of Agroecology, Aarhus University at Flakkebjerg, Slagelse, Denmark
| | - Christa Volkmar
- Institute of Agricultural and Nutritional Sciences, Martin-Luther-University Halle-Wittenberg, Halle, Germany
| | - Andreas Börner
- Leibniz Institute of Plant Genetics and Crop Plant Research, Gatersleben, Germany
- *Correspondence: Mian Abdur Rehman Arif, ; Andreas Börner,
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16
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The Laccase Gene Family Mediate Multi-Perspective Trade-Offs during Tea Plant ( Camellia sinensis) Development and Defense Processes. Int J Mol Sci 2021; 22:ijms222212554. [PMID: 34830436 PMCID: PMC8618718 DOI: 10.3390/ijms222212554] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 11/09/2021] [Accepted: 11/16/2021] [Indexed: 12/29/2022] Open
Abstract
Laccase (LAC) plays important roles in different plant development and defense processes. In this study, we identified laccase genes (CsLACs) in Camellia sinensis cv ‘Longjing43′ cultivars, which were classified into six subclades. The expression patterns of CsLACs displayed significant spatiotemporal variations across different tissues and developmental stages. Most members in subclades II, IV and subclade I exhibited contrasting expression patterns during leaf development, consistent with a trade-off model for preferential expression in the early and late developmental stages. The extensive transcriptional changes of CsLACs under different phytohormone and herbivore treatment were observed and compared, with the expression of most genes in subclades I, II and III being downregulated but genes in subclades IV, V and VI being upregulated, suggesting a growth and defense trade-off model between these subclades. Taken together, our research reveal that CsLACs mediate multi-perspective trade-offs during tea plant development and defense processes and are involved in herbivore resistance in tea plants. More in-depth research of CsLACs upstream regulation and downstream targets mediating herbivore defense should be conducted in the future.
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17
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Buerstmayr M, Wagner C, Nosenko T, Omony J, Steiner B, Nussbaumer T, Mayer KFX, Buerstmayr H. Fusarium head blight resistance in European winter wheat: insights from genome-wide transcriptome analysis. BMC Genomics 2021; 22:470. [PMID: 34167474 PMCID: PMC8228913 DOI: 10.1186/s12864-021-07800-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 06/07/2021] [Indexed: 12/24/2022] Open
Abstract
Background Fusarium head blight (FHB) is a devastating disease of wheat worldwide. Resistance to FHB is quantitatively controlled by the combined effects of many small to medium effect QTL. Flowering traits, especially the extent of extruded anthers, are strongly associated with FHB resistance. Results To characterize the genetic basis of FHB resistance, we generated and analyzed phenotypic and gene expression data on the response to Fusarium graminearum (Fg) infection in 96 European winter wheat genotypes, including several lines containing introgressions from the highly resistant Asian cultivar Sumai3. The 96 lines represented a broad range in FHB resistance and were assigned to sub-groups based on their phenotypic FHB severity score. Comparative analyses were conducted to connect sub-group-specific expression profiles in response to Fg infection with FHB resistance level. Collectively, over 12,300 wheat genes were Fusarium responsive. The core set of genes induced in response to Fg was common across different resistance groups, indicating that the activation of basal defense response mechanisms was largely independent of the resistance level of the wheat line. Fg-induced genes tended to have higher expression levels in more susceptible genotypes. Compared to the more susceptible non-Sumai3 lines, the Sumai3-derivatives demonstrated higher constitutive expression of genes associated with cell wall and plant-type secondary cell wall biogenesis and higher constitutive and Fg-induced expression of genes involved in terpene metabolism. Gene expression analysis of the FHB QTL Qfhs.ifa-5A identified a constitutively expressed gene encoding a stress response NST1-like protein (TraesCS5A01G211300LC) as a candidate gene for FHB resistance. NST1 genes are key regulators of secondary cell wall biosynthesis in anther endothecium cells. Whether the stress response NST1-like gene affects anther extrusion, thereby affecting FHB resistance, needs further investigation. Conclusion Induced and preexisting cell wall components and terpene metabolites contribute to resistance and limit fungal colonization early on. In contrast, excessive gene expression directs plant defense response towards programmed cell death which favors necrotrophic growth of the Fg pathogen and could thus lead to increased fungal colonization. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-07800-1.
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Affiliation(s)
- Maria Buerstmayr
- University of Natural Resources and Life Sciences, Austria, Department of Agrobiotechnology - IFA Tulln, Institute of Biotechnology in Plant Production, Konrad Lorenz Str 20, Tulln, Austria.
| | - Christian Wagner
- University of Natural Resources and Life Sciences, Austria, Department of Agrobiotechnology - IFA Tulln, Institute of Biotechnology in Plant Production, Konrad Lorenz Str 20, Tulln, Austria
| | - Tetyana Nosenko
- Helmholtz Zentrum München, Germany, PGSB Plant Genome and Systems Biology, German Research Center for Environmental Health, Neuherberg, Germany.,Helmholtz Zentrum München, Germany, Research Unit Environmental Simulation (EUS) at the Institute of Biochemical Plant Pathology (BIOP), Ingolstädter Landstraße 1, 85764, Neuherberg, Germany
| | - Jimmy Omony
- Helmholtz Zentrum München, Germany, PGSB Plant Genome and Systems Biology, German Research Center for Environmental Health, Neuherberg, Germany.,Helmholtz Zentrum München, Germany, Institut für Asthma- und Allergieprävention (IAP), Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH), Munich, Germany
| | - Barbara Steiner
- University of Natural Resources and Life Sciences, Austria, Department of Agrobiotechnology - IFA Tulln, Institute of Biotechnology in Plant Production, Konrad Lorenz Str 20, Tulln, Austria
| | - Thomas Nussbaumer
- Helmholtz Zentrum München, Germany, Institute of Network Biology (INET), Ingolstädter Landstraße 1, 85764, Neuherberg, Germany.,Helmholtz Zentrum München, Germany, Institute of Environmental Medicine UNIKA-T, Technical University and Helmholtz Zentrum München, Augsburg, Germany
| | - Klaus F X Mayer
- Helmholtz Zentrum München, Germany, PGSB Plant Genome and Systems Biology, German Research Center for Environmental Health, Neuherberg, Germany
| | - Hermann Buerstmayr
- University of Natural Resources and Life Sciences, Austria, Department of Agrobiotechnology - IFA Tulln, Institute of Biotechnology in Plant Production, Konrad Lorenz Str 20, Tulln, Austria
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18
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Soni N, Altartouri B, Hegde N, Duggavathi R, Nazarian-Firouzabadi F, Kushalappa AC. TaNAC032 transcription factor regulates lignin-biosynthetic genes to combat Fusarium head blight in wheat. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2021; 304:110820. [PMID: 33568310 DOI: 10.1016/j.plantsci.2021.110820] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 12/31/2020] [Accepted: 01/04/2021] [Indexed: 06/12/2023]
Abstract
Fusarium head blight (FHB) is a destructive disease affecting cereal crops globally due to mycotoxin contamination of grains that reduce yield and quality. Among hundreds of QTLs identified for resistance, the QTL-Fhb1 is of significant interest even today, for its major contribution to FHB resistance. Previously, QTL-Fhb1 dissection based on a combined metabolo-genomics approach, identified a few potential resistance genes, including a NAC like transcription factor for FHB resistance. Sequencing and phylogenetic analysis confirmed NAC to be the wheat TaNAC032. Also, the quantitative RT-PCR studies revealed a greater induced expression of TaNAC032 in resistant NIL in comparison to susceptible NIL upon Fusarium graminearum (Fg) infection. The virus-induced gene silencing (VIGS) based functional validation of TaNAC032 in resistant NIL confirmed increased disease severity and fungal biomass. Metabolic profiling revealed low abundances of resistance-related (RR) metabolites in TaNAC032 silenced NIL-R compared to non-silenced. Silenced plants showed decreased transcript abundances of RR metabolite biosynthetic genes associated with a reduction in total lignin content in rachis, confirming the regulatory role of TaNAC032 in wheat in response to Fg infection. If TaNA032 is mutated in an FHB susceptible cultivar, it can be edited to enhance FHB resistance.
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Affiliation(s)
- Nancy Soni
- Plant Science Department, McGill University, Quebec, Canada
| | - Bara Altartouri
- Department of Biological Sciences, Université de Montréal, Quebec, Canada
| | - Niranjan Hegde
- Plant Science Department, McGill University, Quebec, Canada
| | - Raj Duggavathi
- Animal Science Department, McGill University, Quebec, Canada
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Fabre F, Urbach S, Roche S, Langin T, Bonhomme L. Proteomics-Based Data Integration of Wheat Cultivars Facing Fusarium graminearum Strains Revealed a Core-Responsive Pattern Controlling Fusarium Head Blight. FRONTIERS IN PLANT SCIENCE 2021; 12:644810. [PMID: 34135919 PMCID: PMC8201412 DOI: 10.3389/fpls.2021.644810] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 04/07/2021] [Indexed: 05/03/2023]
Abstract
Fusarium head blight (FHB), mainly occurring upon Fusarium graminearum infection in a wide variety of small-grain cereals, is supposed to be controlled by a range of processes diverted by the fungal pathogen, the so-called susceptibility factors. As a mean to provide relevant information about the molecular events involved in FHB susceptibility in bread wheat, we studied an extensive proteome of more than 7,900 identified wheat proteins in three cultivars of contrasting susceptibilities during their interaction with three F. graminearum strains of different aggressiveness. No cultivar-specific proteins discriminated the three wheat genotypes, demonstrating the establishment of a core proteome regardless of unequivocal FHB susceptibility differences. Quantitative protein analysis revealed that most of the FHB-induced molecular adjustments were shared by wheat cultivars and occurred independently of the F. graminearum strain aggressiveness. Although subtle abundance changes evidenced genotype-dependent responses to FHB, cultivar distinction was found to be mainly due to basal abundance differences, especially regarding the chloroplast functions. Integrating these data with previous proteome mapping of the three F. graminearum strains facing the three same wheat cultivars, we demonstrated strong correlations between the wheat protein abundance changes and the adjustments of fungal proteins supposed to interfere with host molecular functions. Together, these results provide a resourceful dataset that expands our understanding of the specific molecular events taking place during the wheat-F. graminearum interaction.
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Affiliation(s)
- Francis Fabre
- Université Clermont Auvergne, INRAE, UMR 1095 Génétique Diversité Ecophysiologie des Céréales, Clermont-Ferrand, France
| | - Serge Urbach
- Institut de Génomique Fonctionnelle, Université de Montpellier, CNRS, INSERM, Montpellier, France
| | - Sylvie Roche
- INRAE, Unité Experimentale 1375, Phénotypage au Champ des Céréales (PHACC), Clermont-Ferrand, France
| | - Thierry Langin
- Université Clermont Auvergne, INRAE, UMR 1095 Génétique Diversité Ecophysiologie des Céréales, Clermont-Ferrand, France
| | - Ludovic Bonhomme
- Université Clermont Auvergne, INRAE, UMR 1095 Génétique Diversité Ecophysiologie des Céréales, Clermont-Ferrand, France
- *Correspondence: Ludovic Bonhomme,
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