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Qian Q, Deng X, Mureed S, Gan Y, Xu D, Wang X, Ali H. Integrating transcriptomics and metabolomics to analyze the defense response of Morus notabilis to mulberry ring rot disease. Front Microbiol 2024; 15:1373827. [PMID: 38533335 PMCID: PMC10963518 DOI: 10.3389/fmicb.2024.1373827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Accepted: 02/27/2024] [Indexed: 03/28/2024] Open
Abstract
Introduction The mulberry industry has thrived in China for millennia, offering significant ecological and economic benefits. However, the prevalence of mulberry ring rot disease poses a serious threat to the quality and yield of mulberry leaves. Methods In this study, we employed a combination of transcriptomic and metabolomic analyses to elucidate the changes occurring at the transcriptional and metabolic levels in Morus notabilis in response to this disease infestation. Key metabolites identified were further validated through in vitro inhibition experiments. Results The findings revealed significant enrichment in Kyoto Encyclopedia of Genes and Genomes pathways, particularly those related to flavonoid biosynthesis. Notably, naringenin, kaempferol, and quercetin emerged as pivotal players in M. notabilis' defense mechanism against this disease pathogen. The upregulation of synthase genes, including chalcone synthase, flavanone-3-hydroxylase, and flavonol synthase, suggested their crucial roles as structural genes in this process. In vitro inhibition experiments demonstrated that kaempferol and quercetin exhibited broad inhibitory properties, while salicylic acid and methyl jasmonate demonstrated efficient inhibitory effects. Discussion This study underscores the significance of the flavonoid biosynthesis pathway in M. notabilis' defense response against mulberry ring rot disease, offering a theoretical foundation for disease control measures.
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Affiliation(s)
- Qianqian Qian
- College of Life Science, China West Normal University, Nanchong, China
| | - Xinqi Deng
- College of Life Science, China West Normal University, Nanchong, China
| | - Sumbul Mureed
- College of Forestry, Sichuan Agricultural University, Chengdu, China
| | - Yujie Gan
- College of Life Science, China West Normal University, Nanchong, China
| | - Danping Xu
- College of Life Science, China West Normal University, Nanchong, China
| | - Xie Wang
- Institute of Agricultural Resources and Environment, Sichuan Academy of Agricultural Sciences, Chengdu, China
| | - Habib Ali
- Department of Agricultural Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Pakistan
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Yang C, Sun N, Qin X, Liu Y, Sui M, Zhang Y, Hu Y, Mao Y, Shen X. Analysis of flavonoid metabolism of compounds in succulent fruits and leaves of three different colors of Rosaceae. Sci Rep 2024; 14:4933. [PMID: 38418625 PMCID: PMC10901891 DOI: 10.1038/s41598-024-55541-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 02/24/2024] [Indexed: 03/02/2024] Open
Abstract
Red flesh apple (Malus pumila var. medzwetzkyana Dieck), purple leaf plum (Prunus cerasifera Ehrhar f), and purple leaf peach (Prunus persica 'Atropurpurea') are significant ornamental plants within the Rosaceae family. The coloration of their fruits and leaves is crucial in their appearance and nutritional quality. However, qualitative and quantitative studies on flavonoids in the succulent fruits and leaves of multicolored Rosaceae plants are lacking. To unveil the diversity and variety-specificity of flavonoids in these three varieties, we conducted a comparative analysis of flavonoid metabolic components using ultra-high-performance liquid phase mass spectrometry (UPLC-MS/MS). The results revealed the detection of 311 metabolites, including 47 flavonoids, 105 flavonols, 16 chalcones, 37 dihydroflavonoids, 8 dihydroflavonols, 30 anthocyanins, 14 flavonoid carbon glycosides, 23 flavanols, 8 isoflavones, 11 tannins, and 12 proanthocyanidins. Notably, although the purple plum and peach leaves exhibited distinct anthocyanin compounds, paeoniflorin and corythrin glycosides were common but displayed varying glycosylation levels. While the green purple leaf peach fruit (PEF) and red flesh apple leaf (AL) possessed the lowest anthocyanin content, they exhibited the highest total flavonoid content. Conversely, the red flesh apple fruit (AF) displayed the highest anthocyanin content and a diverse range of anthocyanin glycosylation modifications, indicating that anthocyanins predominantly influenced the fruit's color. Purple PLF, PLL, and PEL showcased varying concentrations of anthocyanins, suggesting that their colors result from the co-color interaction between specific types of anthocyanins and secondary metabolites, such as flavonols, flavonoids, and dihydroflavonoids. This study provides novel insights into the variations in tissue metabolites among Rosaceae plants with distinct fruit and leaf colors.
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Affiliation(s)
- Chen Yang
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271000, China
| | - Nan Sun
- Hebei Agricultural University, College of Horticulture, Baoding, 071001, China
| | - Xin Qin
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271000, China
| | - Yangbo Liu
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271000, China
- Hebei Agricultural University, College of Horticulture, Baoding, 071001, China
| | - Mengyi Sui
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271000, China
| | - Yawen Zhang
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271000, China
| | - Yanli Hu
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271000, China
| | - Yunfei Mao
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271000, China.
| | - Xiang Shen
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271000, China.
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Xiao S, Ming Y, Hu Q, Ye Z, Si H, Liu S, Zhang X, Wang W, Yu Y, Kong J, Klosterman SJ, Lindsey K, Zhang X, Aierxi A, Zhu L. GhWRKY41 forms a positive feedback regulation loop and increases cotton defence response against Verticillium dahliae by regulating phenylpropanoid metabolism. PLANT BIOTECHNOLOGY JOURNAL 2023; 21:961-978. [PMID: 36632704 PMCID: PMC10106861 DOI: 10.1111/pbi.14008] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 12/19/2022] [Accepted: 12/24/2022] [Indexed: 05/04/2023]
Abstract
Despite the established significance of WRKY proteins and phenylpropanoid metabolism in plant immunity, how WRKY proteins modulate aspects of the phenylpropanoid pathway remains undetermined. To understand better the role of WRKY proteins in plant defence, we identified a cotton (Gossypium hirsutum) protein, GhWRKY41, that is, universally and rapidly induced in three disease-resistant cotton cultivars following inoculation with the plant pathogenic fungus, Verticillium dahliae. We show that overexpression of GhWRKY41 in transgenic cotton and Arabidopsis enhances resistance to V. dahliae, while knock-down increases cotton more susceptibility to the fungus. GhWRKY41 physically interacts with itself and directly activates its own transcription. A genome-wide chromatin immunoprecipitation and high-throughput sequencing (ChIP-seq), in combination with RNA sequencing (RNA-seq) analyses, revealed that 43.1% of GhWRKY41-binding genes were up-regulated in cotton upon inoculation with V. dahliae, including several phenylpropanoid metabolism master switches, receptor kinases, and disease resistance-related proteins. We also show that GhWRKY41 homodimer directly activates the expression of GhC4H and Gh4CL, thereby modulating the accumulation of lignin and flavonoids. This finding expands our understanding of WRKY-WRKY protein interactions and provides important insights into the regulation of the phenylpropanoid pathway in plant immune responses by a WRKY protein.
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Affiliation(s)
- Shenghua Xiao
- National Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubeiChina
- State Key Lab for Conservation and Utilization of Subtropical Agri‐Biological Resources, College of AgricultureGuangxi UniversityNanningChina
| | - Yuqing Ming
- National Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubeiChina
- Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanHubeiChina
| | - Qin Hu
- National Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubeiChina
- State Key Lab for Conservation and Utilization of Subtropical Agri‐Biological Resources, College of AgricultureGuangxi UniversityNanningChina
| | - Zhengxiu Ye
- National Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubeiChina
| | - Huan Si
- National Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubeiChina
| | - Shiming Liu
- National Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubeiChina
- Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanHubeiChina
| | - Xiaojun Zhang
- National Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubeiChina
- Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanHubeiChina
| | - Weiran Wang
- Institute of Economic CropsXinjiang Academy of Agricultural SciencesXinjiangChina
| | - Yu Yu
- Xinjiang Academy of Agricultural & Reclamation SciencesShiheziChina
| | - Jie Kong
- Institute of Economic CropsXinjiang Academy of Agricultural SciencesXinjiangChina
| | - Steven J. Klosterman
- United States Department of AgricultureAgricultural Research ServiceSalinasCAUSA
| | | | - Xianlong Zhang
- National Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubeiChina
- Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanHubeiChina
| | - Alifu Aierxi
- Institute of Economic CropsXinjiang Academy of Agricultural SciencesXinjiangChina
| | - Longfu Zhu
- National Key Laboratory of Crop Genetic ImprovementHuazhong Agricultural UniversityWuhanHubeiChina
- Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhanHubeiChina
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Zhang Z, Chang X, Luo S, Wang Y, Xuan S, Zhao J, Shen S, Ma W, Chen X. Transcriptome analysis of two pepper genotypes infected with pepper mild mottle virus. Front Genet 2023; 14:1164730. [PMID: 37152997 PMCID: PMC10156976 DOI: 10.3389/fgene.2023.1164730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 04/10/2023] [Indexed: 05/09/2023] Open
Abstract
Pepper mild mottle virus (PMMoV) poses a significant threat to pepper production because it is highly contagious and extremely persistent in soil. Despite this threat, little is known about the molecular processes that underlie plant responses to pepper mild mottle virus. Here, we performed RNA sequencing of tolerant ("17-p63") and susceptible ("16-217") pepper genotypes after pepper mild mottle virus or mock inoculation. Viral accumulation in systemic leaves was lower in the pepper mild mottle virus-resistant 17-p63 genotype than in the pepper mild mottle virus-sensitive 16-217 genotype, and infection symptoms were more apparent in systemic leaves of 16-217 than in those of 17-p63 at the same timepoints during the infection process. We identified 2,959 and 2,159 differentially expressed genes (DEGs) in systemic leaves of infected 16-217 and 17-p63, respectively. Through Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis of differentially expressed genes from both genotypes revealed significant enrichment of the MAPK signaling pathway, plant-pathogen interaction, and flavonoid biosynthesis. A number of differentially expressed genes showed opposite trends in relation to stress resistance and disease defense in the two genotypes. We also performed weighted gene co-expression network analysis (WGCNA) of all samples and identified modules associated with resistance to pepper mild mottle virus, as well as seven hub genes. These results identify candidate virus resistance genes and provide insight into pepper defense mechanisms against pepper mild mottle virus.
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Affiliation(s)
| | | | | | | | | | | | | | - Wei Ma
- *Correspondence: Xueping Chen, ; Wei Ma,
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Weng H, Yan J, Guo L, Chen H. Integrated transcriptomic and metabolomic analyses of the molecular mechanisms of two highland barley genotypes with pyroxsulam responses. FRONTIERS IN PLANT SCIENCE 2022; 13:1030578. [PMID: 36618617 PMCID: PMC9812518 DOI: 10.3389/fpls.2022.1030578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 10/31/2022] [Indexed: 06/17/2023]
Abstract
Highland barley is one of the few crops that can be grown at high elevations, making it a key resource within the Tibet Plateau. Weeds are a significant threat to highland barley production, and new herbicides and tolerant barley varieties are needed to control this ever-growing problem. A better understanding of existing herbicide resistance mechanisms is therefore needed. In this study, transcriptomic and metabolomic analyses were used to identify molecular and physiological changes in two highland barley genotypes with differing sensitivities to the herbicide pyroxsulam. We identified several stress-responsive metabolites, including flavonoids and antioxidants, which accumulated to significantly higher levels in the pyroxsulam-resistant genotype. Additionally, we found key genes in both the flavonoid biosynthesis pathway and the antioxidant system that were up-regulated in pyroxsulam-resistant barley. This work significantly expands on the current understanding of the molecular mechanisms underlying differing pyroxsulam tolerance among barley genotypes and provides several new avenues to explore for breeding or engineering tolerant barley.
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Wang J, Hu D, Shi X, Luo J, Ren G, Dai Z, Qi S, Du D. Different Responses of Invasive Weed Alternanthera philoxeroides and Oryza sativa to Plant Growth Regulators. LIFE (BASEL, SWITZERLAND) 2022; 12:life12071069. [PMID: 35888157 PMCID: PMC9318923 DOI: 10.3390/life12071069] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 07/10/2022] [Accepted: 07/12/2022] [Indexed: 11/16/2022]
Abstract
Invasive plants cause a global loss of biodiversity, pose a major threat to the environment and economy, and also significantly affect agricultural production and food security. Plant growth regulators (PGRs) are widely used in agricultural production and might also affect invasive weeds distributed around crops in various ways. At present, there are few studies concerning whether there are significant effects of PGRs on invasive weeds. In this study, two widely used PGRs in paddy fields, gibberellic acid (GA) and paclobutrazol (PAC), were applied on Oryza sativa and a noxious weed Alternanthera philoxeroides, which is frequently distributed in paddy fields. The purpose of this study was to investigate if there are different responses of rice and weeds to these two plant regulators and the significant effects of PGRs on invasive weeds. The results showed that GA significantly promotes the total biomass of A. philoxeroides by 52.00%, but does not significantly affect that of O. sativa. GA significantly increases the growth of aboveground and belowground A. philoxeroides, but not that of O. sativa. On the other hand, PAC extremely inhibited the aboveground and belowground biomass of A. philoxeroides by more than 90%, but did not significantly inhibit the belowground biomass of O. sativa. PAC also enhanced the leaf nitrogen content and chlorophyll content of A. philoxeroides, but not the traits of O. sativa. Therefore, the effects of PGRs are significantly different between rice and the invasive weed. The potential promotion effects of PGRs on weeds that are frequently distributed in farmland warrant sufficient attention. This is probably one of the important reasons why invasive weeds can successfully invade the agricultural ecosystem with large human disturbance. This study might sound an alarm for weed control in paddy fields.
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Affiliation(s)
- Jiahao Wang
- School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China; (J.W.); (D.H.); (J.L.)
| | - Die Hu
- School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China; (J.W.); (D.H.); (J.L.)
| | - Xinning Shi
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; (X.S.); (G.R.); (Z.D.); (D.D.)
| | - Jing Luo
- School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China; (J.W.); (D.H.); (J.L.)
| | - Guangqian Ren
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; (X.S.); (G.R.); (Z.D.); (D.D.)
| | - Zhicong Dai
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; (X.S.); (G.R.); (Z.D.); (D.D.)
| | - Shanshan Qi
- School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China; (J.W.); (D.H.); (J.L.)
- Correspondence:
| | - Daolin Du
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China; (X.S.); (G.R.); (Z.D.); (D.D.)
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Kaur S, Samota MK, Choudhary M, Choudhary M, Pandey AK, Sharma A, Thakur J. How do plants defend themselves against pathogens-Biochemical mechanisms and genetic interventions. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2022; 28:485-504. [PMID: 35400890 PMCID: PMC8943088 DOI: 10.1007/s12298-022-01146-y] [Citation(s) in RCA: 50] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 02/04/2022] [Accepted: 02/06/2022] [Indexed: 05/15/2023]
Abstract
In agro-ecosystem, plant pathogens hamper food quality, crop yield, and global food security. Manipulation of naturally occurring defense mechanisms in host plants is an effective and sustainable approach for plant disease management. Various natural compounds, ranging from cell wall components to metabolic enzymes have been reported to protect plants from infection by pathogens and hence provide specific resistance to hosts against pathogens, termed as induced resistance. It involves various biochemical components, that play an important role in molecular and cellular signaling events occurring either before (elicitation) or after pathogen infection. The induction of reactive oxygen species, activation of defensive machinery of plants comprising of enzymatic and non-enzymatic antioxidative components, secondary metabolites, pathogenesis-related protein expression (e.g. chitinases and glucanases), phytoalexin production, modification in cell wall composition, melatonin production, carotenoids accumulation, and altered activity of polyamines are major induced changes in host plants during pathogen infection. Hence, the altered concentration of biochemical components in host plants restricts disease development. Such biochemical or metabolic markers can be harnessed for the development of "pathogen-proof" plants. Effective utilization of the key metabolites-based metabolic markers can pave the path for candidate gene identification. This present review discusses the valuable information for understanding the biochemical response mechanism of plants to cope with pathogens and genomics-metabolomics-based sustainable development of pathogen proof cultivars along with knowledge gaps and future perspectives to enhance sustainable agricultural production.
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Affiliation(s)
- Simardeep Kaur
- Division of Biochemistry, ICAR-Indian Agricultural Research Institute, New Delhi, India
| | | | - Manoj Choudhary
- ICAR-National Research Center for Integrated Pest Management, New Delhi, India
- Department of Plant Pathology, University of Florida, Gainesville, United States
| | - Mukesh Choudhary
- School of Agriculture and Environment, The University of Western Australia, Perth, Australia
- ICAR-Indian Institute of Maize Research, PAU Campus, Ludhiana, India
| | - Abhay K. Pandey
- Department of Mycology and Microbiology, Tea Research Association-North Bengal Regional R & D Center, Nagrakata, West Bengal 735225 India
| | - Anshu Sharma
- Department of FST, Dr. YS Parmar UHF Nauni, Solan, India
| | - Julie Thakur
- Department of Botany, Bhaskaracharya College of Applied Sciences, University of Delhi, Delhi, India
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Khasin M, Bernhardson LF, O'Neill PM, Palmer NA, Scully ED, Sattler SE, Funnell-Harris DL. Pathogen and drought stress affect cell wall and phytohormone signaling to shape host responses in a sorghum COMT bmr12 mutant. BMC PLANT BIOLOGY 2021; 21:391. [PMID: 34418969 PMCID: PMC8379876 DOI: 10.1186/s12870-021-03149-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 07/27/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND As effects of global climate change intensify, the interaction of biotic and abiotic stresses increasingly threatens current agricultural practices. The secondary cell wall is a vanguard of resistance to these stresses. Fusarium thapsinum (Fusarium stalk rot) and Macrophomina phaseolina (charcoal rot) cause internal damage to the stalks of the drought tolerant C4 grass, sorghum (Sorghum bicolor (L.) Moench), resulting in reduced transpiration, reduced photosynthesis, and increased lodging, severely reducing yields. Drought can magnify these losses. Two null alleles in monolignol biosynthesis of sorghum (brown midrib 6-ref, bmr6-ref; cinnamyl alcohol dehydrogenase, CAD; and bmr12-ref; caffeic acid O-methyltransferase, COMT) were used to investigate the interaction of water limitation with F. thapsinum or M. phaseolina infection. RESULTS The bmr12 plants inoculated with either of these pathogens had increased levels of salicylic acid (SA) and jasmonic acid (JA) across both watering conditions and significantly reduced lesion sizes under water limitation compared to adequate watering, which suggested that drought may prime induction of pathogen resistance. RNA-Seq analysis revealed coexpressed genes associated with pathogen infection. The defense response included phytohormone signal transduction pathways, primary and secondary cell wall biosynthetic genes, and genes encoding components of the spliceosome and proteasome. CONCLUSION Alterations in the composition of the secondary cell wall affect immunity by influencing phenolic composition and phytohormone signaling, leading to the action of defense pathways. Some of these pathways appear to be activated or enhanced by drought. Secondary metabolite biosynthesis and modification in SA and JA signal transduction may be involved in priming a stronger defense response in water-limited bmr12 plants.
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Affiliation(s)
- Maya Khasin
- Wheat, Sorghum and Forage Research Unit, USDA-ARS, 251 Filley Hall, University of Nebraska-East Campus, Lincoln, NE, 68583, USA
- Department of Plant Pathology, University of Nebraska, Lincoln, NE, 68583, USA
| | - Lois F Bernhardson
- Wheat, Sorghum and Forage Research Unit, USDA-ARS, 251 Filley Hall, University of Nebraska-East Campus, Lincoln, NE, 68583, USA
- Department of Plant Pathology, University of Nebraska, Lincoln, NE, 68583, USA
| | - Patrick M O'Neill
- Wheat, Sorghum and Forage Research Unit, USDA-ARS, 251 Filley Hall, University of Nebraska-East Campus, Lincoln, NE, 68583, USA
- Department of Plant Pathology, University of Nebraska, Lincoln, NE, 68583, USA
| | - Nathan A Palmer
- Wheat, Sorghum and Forage Research Unit, USDA-ARS, 251 Filley Hall, University of Nebraska-East Campus, Lincoln, NE, 68583, USA
- Department of Agronomy and Horticulture, University of Nebraska, Lincoln, NE, 68583, USA
| | - Erin D Scully
- Stored Product Insect and Engineering Research Unit, Center for Grain and Animal Health, USDA-ARS, Manhattan, KS, 66502, USA
- Department of Entomology, Kansas State University, Manhattan, KS, 66502, USA
| | - Scott E Sattler
- Wheat, Sorghum and Forage Research Unit, USDA-ARS, 251 Filley Hall, University of Nebraska-East Campus, Lincoln, NE, 68583, USA
- Department of Agronomy and Horticulture, University of Nebraska, Lincoln, NE, 68583, USA
| | - Deanna L Funnell-Harris
- Wheat, Sorghum and Forage Research Unit, USDA-ARS, 251 Filley Hall, University of Nebraska-East Campus, Lincoln, NE, 68583, USA.
- Department of Plant Pathology, University of Nebraska, Lincoln, NE, 68583, USA.
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Fang X, Zhang C, Wang Z, Duan T, Yu B, Jia X, Pang J, Ma L, Wang Y, Nan Z. Co-infection by Soil-Borne Fungal Pathogens Alters Disease Responses Among Diverse Alfalfa Varieties. Front Microbiol 2021; 12:664385. [PMID: 34335495 PMCID: PMC8317461 DOI: 10.3389/fmicb.2021.664385] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 06/11/2021] [Indexed: 11/19/2022] Open
Abstract
Fusarium oxysporum f. sp. medicaginis (Fom) and Rhizoctonia solani (Rs) are the major soil-borne fungal pathogens that pose severe threats to commercial alfalfa production in China. However, the effects of Fom and Rs co-infection on alfalfa and whether co-infection alters disease resistance responses among diverse varieties remain unknown. A collection of 80 alfalfa varieties (Medicago sativa) originated from seven countries were used to study the effects of Fom and Rs co-infection on alfalfa and host resistance responses. The co-infection resulted in more severe disease and reductions in growth and biomass allocation across varieties in comparison with either single infection by Fom or Rs; in addition, root morphology was much more strongly altered by the co-infection. Principal component analysis based on all plant traits showed that varieties under the co-infection were related to the single infection by Rs, being separated from Fom, and hierarchical clustering found differential response patterns among varieties upon co-infection compared with either single infection, with most varieties being highly susceptible to the co-infection. Furthermore, varieties that were most resistant to either single infection were not effective to co-infection, and there was no individual variety with resistance to both pathogens singly and co-infected. This study reveals for the first time that the co-infection by Fom and Rs alters disease resistance responses among diverse alfalfa varieties and provides useful information for developing alfalfa varieties with resistance to the co-occurrence of different soil-borne pathogens.
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Affiliation(s)
- Xiangling Fang
- State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Caixia Zhang
- State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Zi Wang
- State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Tingyu Duan
- State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Binhua Yu
- State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Xitao Jia
- State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Jiayin Pang
- School of Agriculture and Environment, UWA Institute of Agriculture, The University of Western Australia, Perth, WA, Australia
| | - Lisong Ma
- Division of Plant Science, Research School of Biology, Australian National University, Canberra, ACT, Australia
| | - Yanrong Wang
- State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Zhibiao Nan
- State Key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
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Cox LD, Munholland S, Mats L, Zhu H, Crosby WL, Lukens L, Pauls KP, Bozzo GG. The Induction of the Isoflavone Biosynthesis Pathway Is Associated with Resistance to Common Bacterial Blight in Phaseolus vulgaris L. Metabolites 2021; 11:433. [PMID: 34357327 PMCID: PMC8306140 DOI: 10.3390/metabo11070433] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 06/24/2021] [Accepted: 06/26/2021] [Indexed: 11/17/2022] Open
Abstract
Xanthomonas axonopodis infects common bean (Phaseolus vulgaris L.) causing the disease common bacterial blight (CBB). The aim of this study was to investigate the molecular and metabolic mechanisms underlying CBB resistance in P. vulgaris. Trifoliate leaves of plants of a CBB-resistant P. vulgaris recombinant inbred line (RIL) and a CBB-susceptible RIL were inoculated with X. axonopodis or water (mock treatment). Leaves sampled at defined intervals over a 48-h post-inoculation (PI) period were monitored for alterations in global transcript profiles. A total of 800 genes were differentially expressed between pathogen and mock treatments across both RILs; approximately half were differentially expressed in the CBB-resistant RIL at 48 h PI. Notably, there was a 4- to 32-fold increased transcript abundance for isoflavone biosynthesis genes, including several isoflavone synthases, isoflavone 2'-hydroxylases and isoflavone reductases. Ultra-high performance liquid chromatography-tandem mass spectrometry assessed leaf metabolite levels as a function of the PI period. The concentrations of the isoflavones daidzein and genistein and related metabolites coumestrol and phaseollinisoflavan were increased in CBB-resistant RIL plant leaves after exposure to the pathogen. Isoflavone pathway transcripts and metabolite profiles were unaffected in the CBB-susceptible RIL. Thus, induction of the isoflavone pathway is associated with CBB-resistance in P. vulgaris.
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Affiliation(s)
- Laura D. Cox
- Department of Plant Agriculture, University of Guelph, 50 Stone Road East, Guelph, ON N1G 2W1, Canada; (L.D.C.); (L.L.); (K.P.P.)
| | - Seth Munholland
- Department of Biological Sciences, University of Windsor, 401 Sunset Ave, Windsor, ON N9B 3P4, Canada; (S.M.); (W.L.C.)
| | - Lili Mats
- Guelph Research and Development Centre, Agriculture and Agri-Food Canada, 93 Stone Road West, Guelph, ON N1G 5C9, Canada; (L.M.); (H.Z.)
| | - Honghui Zhu
- Guelph Research and Development Centre, Agriculture and Agri-Food Canada, 93 Stone Road West, Guelph, ON N1G 5C9, Canada; (L.M.); (H.Z.)
| | - William L. Crosby
- Department of Biological Sciences, University of Windsor, 401 Sunset Ave, Windsor, ON N9B 3P4, Canada; (S.M.); (W.L.C.)
| | - Lewis Lukens
- Department of Plant Agriculture, University of Guelph, 50 Stone Road East, Guelph, ON N1G 2W1, Canada; (L.D.C.); (L.L.); (K.P.P.)
| | - Karl Peter Pauls
- Department of Plant Agriculture, University of Guelph, 50 Stone Road East, Guelph, ON N1G 2W1, Canada; (L.D.C.); (L.L.); (K.P.P.)
| | - Gale G. Bozzo
- Department of Plant Agriculture, University of Guelph, 50 Stone Road East, Guelph, ON N1G 2W1, Canada; (L.D.C.); (L.L.); (K.P.P.)
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11
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Li P, Ruan Z, Fei Z, Yan J, Tang G. Integrated Transcriptome and Metabolome Analysis Revealed That Flavonoid Biosynthesis May Dominate the Resistance of Zanthoxylum bungeanum against Stem Canker. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:6360-6378. [PMID: 34043342 DOI: 10.1021/acs.jafc.1c00357] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Stem canker of Zanthoxylum bungeanum is a devastating disease that seriously affects the plantation and industrial development of Z. bungeanum due to a lack of effective control measures. The objective of this study was to screen out resistant Z. bungeanum varieties and further explore their resistance mechanisms against stem canker. Results showed that the most resistant and susceptible varieties were, respectively, Doujiao (DJ) and Fengxian Dahongpao (FD). Combining transcriptomic and metabolomic analyses, we found that the genes and metabolites associated with the phenylpropanoid metabolism, especially flavonoid biosynthesis, were highly significantly enriched in DJ following pathogen infection compared with that in FD, which indicated that the flavonoid metabolism may positively dominate the resistance of Z. bungeanum. This finding was further confirmed by quantitative real-time polymerase chain reaction analysis, through which higher expression levels of core genes involved in flavonoid metabolism in resistant variety were observed. Moreover, by analyzing the differences in the flavonoid content in the stems of resistant and susceptible varieties and the antifungal activities of flavonoids extracted from Z. bungeanum stems, the conclusion that flavonoid metabolism positively regulates the resistance of Z. bungeanum was further supported. Our results not only aid in better understanding the resistance mechanisms of Z. bungeanum against stem canker but also promote the breeding and utilization of resistant varieties.
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Affiliation(s)
- Peiqin Li
- Key Laboratory of National Forestry and Grassland Administration on Management of Western Forest Bio-Disaster, College of Forestry, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Zhao Ruan
- Key Laboratory of National Forestry and Grassland Administration on Management of Western Forest Bio-Disaster, College of Forestry, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Zhaoxue Fei
- Key Laboratory of National Forestry and Grassland Administration on Management of Western Forest Bio-Disaster, College of Forestry, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Jinjiao Yan
- Key Laboratory of National Forestry and Grassland Administration on Management of Western Forest Bio-Disaster, College of Forestry, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
| | - Guanghui Tang
- Key Laboratory of National Forestry and Grassland Administration on Management of Western Forest Bio-Disaster, College of Forestry, Northwest A&F University, Yangling, Shaanxi 712100, People's Republic of China
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12
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Xiao S, Hu Q, Shen J, Liu S, Yang Z, Chen K, Klosterman SJ, Javornik B, Zhang X, Zhu L. GhMYB4 downregulates lignin biosynthesis and enhances cotton resistance to Verticillium dahliae. PLANT CELL REPORTS 2021; 40:735-751. [PMID: 33638657 DOI: 10.1007/s00299-021-02672-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 02/03/2021] [Indexed: 05/15/2023]
Abstract
GhMYB4 acts as a negative regulator in lignin biosynthesis, which results in alteration of cell wall integrity and activation of cotton defense response. Verticillium wilt of cotton (Gossypium hirsutum) caused by the soil-borne fungus Verticillium dahliae (V. dahliae) represents one of the most important constraints of cotton production worldwide. Mining of the genes involved in disease resistance and illuminating the molecular mechanisms that underlie this resistance is of great importance in cotton breeding programs. Defense-induced lignification in plants is necessary for innate immunity, and there are reports of a correlation between increased lignification and disease resistance. In this study, we present an example in cotton whereby plants with reduced lignin content also exhibit enhanced disease resistance. We identified a negative regulator of lignin synthesis, in cotton encoded in GhMYB4. Overexpression of GhMYB4 in cotton and Arabidopsis enhanced resistance to V. dahliae with reduced lignin deposition. Moreover, GhMYB4 could bind the promoters of several genes involved in lignin synthesis, such as GhC4H-1, GhC4H-2, Gh4CL-4, and GhCAD-3, and impair their expression. The reduction of lignin content in GhMYB4-overexpressing cotton led to alterations of cell wall integrity (CWI) and released more oligogalacturonides (OGs) which may act as damage-associated molecular patterns (DAMPs) to stimulate plant defense responses. In support of this hypothesis, exogenous application with polygalacturonic acid (PGA) in cotton activated biosynthesis of jasmonic acid (JA) and JA-mediated defense against V. dahliae, similar to that described for cotton plants overexpressing GhMYB4. This study provides a new candidate gene for cotton disease-resistant breeding and an increased understanding of the relationship between lignin synthesis, OG release, and plant immunity.
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Affiliation(s)
- Shenghua Xiao
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Qin Hu
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Science, Hubei University, Wuhan, 430000, Hubei, China
| | - Jili Shen
- College of Agriculture, Shihezi University, Shihezi, Xinjiang, China
| | - Shiming Liu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Zhaoguang Yang
- College of Agriculture, Shihezi University, Shihezi, Xinjiang, China
| | - Kun Chen
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Steven J Klosterman
- United States Department of Agriculture, Agricultural Research Service (USDA-ARS), Salinas, CA, 93905, USA
| | - Branka Javornik
- Centre for Plant Biotechnology and Breeding, Department of Agronomy, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Xianlong Zhang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Longfu Zhu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
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13
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Zhu YX, Ge C, Ma S, Liu XY, Liu M, Sun Y, Wang GF. Maize ZmFNSI Homologs Interact with an NLR Protein to Modulate Hypersensitive Response. Int J Mol Sci 2020; 21:E2529. [PMID: 32260554 PMCID: PMC7177559 DOI: 10.3390/ijms21072529] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 03/31/2020] [Accepted: 04/02/2020] [Indexed: 12/11/2022] Open
Abstract
Nucleotide binding, leucine-rich-repeat (NLR) proteins are the major class of resistance (R) proteins used by plants to defend against pathogen infection. The recognition between NLRs and their cognate pathogen effectors usually triggers a rapid localized cell death, termed the hypersensitive response (HR). Flavone synthase I (FNSI) is one of the key enzymes in the flavone biosynthesis pathway. It also displays salicylic acid (SA) 5-hydroxylase (S5H) activity. A close homolog of FNSI/S5H displays SA 3-hydroxylase (S3H) activity. Both FNSI/S5H and S3H play important roles in plant innate immunity. However, the underlying molecular mechanisms and the relationship between S5H and S3H with the NLR-mediated HR are not known in any plant species. In this study, we identified three genes encoding ZmFNSI-1, ZmFNSI-2 and ZmS3H that are significantly upregulated in a maize line carrying an autoactive NLR Rp1-D21 mutant. Functional analysis showed that ZmFNSI-1 and ZmFNSI-2, but not ZmS3H, suppressed HR conferred by Rp1-D21 and its signaling domain CCD21 when transiently expressed in N. benthamiana. ZmFNSI-1 and ZmFNSI-2 physically interacted with CCD21. Furthermore, ZmFNSI-1 and ZmFNSI-2 interacted with HCT, a key enzyme in lignin biosynthesis pathway, which can also suppress Rp1-D21-mediated HR. These results lay the foundation for the further functional analysis of the roles of FNSI in plant innate immunity.
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Affiliation(s)
| | | | | | | | | | | | - Guan-Feng Wang
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, Qingdao 266237, China; (Y.-X.Z.); (C.G.); (S.M.); (X.-Y.L.); (M.L.); (Y.S.)
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14
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Kankanala P, Jones P, Nandety RS, Jacobson DA, Mysore KS. Plasticity of Phymatotrichopsis omnivora infection strategies is dependent on host and nonhost plant responses. PLANT, CELL & ENVIRONMENT 2020; 43:1084-1101. [PMID: 31930733 PMCID: PMC7154777 DOI: 10.1111/pce.13721] [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: 06/12/2019] [Revised: 01/06/2020] [Accepted: 01/08/2020] [Indexed: 06/10/2023]
Abstract
Necrotrophic fungi constitute the largest group of plant fungal pathogens that cause heavy crop losses worldwide. Phymatotrichopsis omnivora is a broad host, soil-borne necrotrophic fungal pathogen that infects over 2,000 dicotyledonous plants. The molecular basis of such broad host range is unknown. We conducted cell biology and transcriptomic studies in Medicago truncatula (susceptible), Brachypodium distachyon (resistant/nonhost), and Arabidopsis thaliana (partially resistant) to understand P. omnivora virulence mechanisms. We performed defence gene analysis, gene enrichments, and correlational network studies during key infection stages. We identified that P. omnivora infects the susceptible plant as a traditional necrotroph. However, it infects the partially resistant plant as a hemi-biotroph triggering salicylic acid-mediated defence pathways in the plant. Further, the infection strategy in partially resistant plants is determined by the host responses during early infection stages. Mutant analyses in A. thaliana established the role of small peptides PEP1 and PEP2 in defence against P. omnivora. The resistant/nonhost B. distachyon triggered stress responses involving sugars and aromatic acids. Bdwat1 mutant analysis identified the role of cell walls in defence. This is the first report that describes the plasticity in infection strategies of P. omnivora providing insights into broad host range.
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Affiliation(s)
| | - Piet Jones
- Biosciences DivisionOak Ridge National LaboratoryOak RidgeTennessee
- Bredesen Center for Interdisciplinary StudiesUniversity of Tennessee KnoxvilleKnoxvilleTennessee
| | | | - Daniel A. Jacobson
- Biosciences DivisionOak Ridge National LaboratoryOak RidgeTennessee
- Bredesen Center for Interdisciplinary StudiesUniversity of Tennessee KnoxvilleKnoxvilleTennessee
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15
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Markulin L, Corbin C, Renouard S, Drouet S, Durpoix C, Mathieu C, Lopez T, Auguin D, Hano C, Lainé É. Characterization of LuWRKY36, a flax transcription factor promoting secoisolariciresinol biosynthesis in response to Fusarium oxysporum elicitors in Linum usitatissimum L. hairy roots. PLANTA 2019; 250:347-366. [PMID: 31037486 DOI: 10.1007/s00425-019-03172-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 04/22/2019] [Indexed: 05/26/2023]
Abstract
The involvement of a WRKY transcription factor in the regulation of lignan biosynthesis in flax using a hairy root system is described. Secoisolariciresinol is the main flax lignan synthesized by action of LuPLR1 (pinoresinol-lariciresinol reductase 1). LuPLR1 gene promoter deletion experiments have revealed a promoter region containing W boxes potentially responsible for the response to Fusarium oxysporum. W boxes are bound by WRKY transcription factors that play a role in the response to stress. A candidate WRKY transcription factor, LuWRKY36, was isolated from both abscisic acid and Fusarium elicitor-treated flax cell cDNA libraries. This transcription factors contains two WRKY DNA-binding domains and is a homolog of AtWRKY33. Different approaches confirmed LuWRKY36 binding to a W box located in the LuPLR1 promoter occurring through a unique direct interaction mediated by its N-terminal WRKY domain. Our results propose that the positive regulator action of LuWRKY36 on the LuPLR1 gene regulation and lignan biosynthesis in response to biotic stress is positively mediated by abscisic acid and inhibited by ethylene. Additionally, we demonstrate a differential Fusarium elicitor response in susceptible and resistant flax cultivars, seen as a faster and stronger LuPLR1 gene expression response accompanied with higher secoisolariciresinol accumulation in HR of the resistant cultivar.
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Affiliation(s)
- Lucija Markulin
- Laboratoire de Biologie des Ligneux et des Grandes Cultures, EA 1207, INRA USC 1328, Université d'Orléans, Pôle Universitaire d'Eure et Loir, 21 Rue de Loigny la Bataille, 28000, Chartres, France
| | - Cyrielle Corbin
- Laboratoire de Biologie des Ligneux et des Grandes Cultures, EA 1207, INRA USC 1328, Université d'Orléans, Pôle Universitaire d'Eure et Loir, 21 Rue de Loigny la Bataille, 28000, Chartres, France
| | - Sullivan Renouard
- Laboratoire de Biologie des Ligneux et des Grandes Cultures, EA 1207, INRA USC 1328, Université d'Orléans, Pôle Universitaire d'Eure et Loir, 21 Rue de Loigny la Bataille, 28000, Chartres, France
| | - Samantha Drouet
- Laboratoire de Biologie des Ligneux et des Grandes Cultures, EA 1207, INRA USC 1328, Université d'Orléans, Pôle Universitaire d'Eure et Loir, 21 Rue de Loigny la Bataille, 28000, Chartres, France
| | - Charlène Durpoix
- Laboratoire de Biologie des Ligneux et des Grandes Cultures, EA 1207, INRA USC 1328, Université d'Orléans, Pôle Universitaire d'Eure et Loir, 21 Rue de Loigny la Bataille, 28000, Chartres, France
| | - Charlotte Mathieu
- Laboratoire de Biologie des Ligneux et des Grandes Cultures, EA 1207, INRA USC 1328, Université d'Orléans, Pôle Universitaire d'Eure et Loir, 21 Rue de Loigny la Bataille, 28000, Chartres, France
| | - Tatiana Lopez
- Laboratoire de Biologie des Ligneux et des Grandes Cultures, EA 1207, INRA USC 1328, Université d'Orléans, Pôle Universitaire d'Eure et Loir, 21 Rue de Loigny la Bataille, 28000, Chartres, France
| | - Daniel Auguin
- Laboratoire de Biologie des Ligneux et des Grandes Cultures, EA 1207, INRA USC 1328, Université d'Orléans, Pôle Universitaire d'Eure et Loir, 21 Rue de Loigny la Bataille, 28000, Chartres, France
| | - Christophe Hano
- Laboratoire de Biologie des Ligneux et des Grandes Cultures, EA 1207, INRA USC 1328, Université d'Orléans, Pôle Universitaire d'Eure et Loir, 21 Rue de Loigny la Bataille, 28000, Chartres, France
| | - Éric Lainé
- Laboratoire de Biologie des Ligneux et des Grandes Cultures, EA 1207, INRA USC 1328, Université d'Orléans, Pôle Universitaire d'Eure et Loir, 21 Rue de Loigny la Bataille, 28000, Chartres, France.
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16
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Bilska K, Stuper-Szablewska K, Kulik T, Buśko M, Załuski D, Jurczak S, Perkowski J. Changes in Phenylpropanoid and Trichothecene Production by Fusarium culmorum and F. graminearum Sensu Stricto via Exposure to Flavonoids. Toxins (Basel) 2018; 10:toxins10030110. [PMID: 29510600 PMCID: PMC5869398 DOI: 10.3390/toxins10030110] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 03/02/2018] [Accepted: 03/03/2018] [Indexed: 02/07/2023] Open
Abstract
Flavonoids are a group of hydroxylated polyphenolic compounds widely distributed in the plant kingdom. Biosynthesis of these compounds involves type III PKSs, whose presence has been recently predicted in some fungal species through genome sequencing efforts. In this study, for the first time it was found that Fusaria produce flavonoids on solid YES medium. Naringenin, as the central precursor of all flavonoids, was produced at highest quantities, followed by quercetin, kaempferol, apigenin and luteolin. In plants, flavonoids are involved in the protection of cereals to a wide range of stresses, including host defense against Fusaria. Under in vitro conditions, strains of Fusarium culmorum and F. graminearum sensu stricto were incubated at levels of flavonoids close to amounts produced by cereals in response to fungal infection. The amounts of exogenous naringenin, apigenin, luteolin, kaempferol and quercetin were reduced and converted by fungi to the other flavonoid derivatives. Treatment of fungi with naringenin derivatives led to the inhibition of naringenin production. Correspondingly, the production of fungal-derived phenolic acids decreased in flavonoid treated samples, although this effect appeared to be dependent on the strain, flavonoid molecule and its concentration. Fusaria showed high variability in trichothecene production in response to flavonoids. With emphasis on quercetin, mycotoxin accumulation in the media was significantly decreased by luteolin, kaempferol, naringenin and apigenin. However, in some cases, apigenin led to the increase of mycotoxin content in the media. Gene expression experiments of Tri genes responsible for trichothecene biosynthesis (Tri4, Tri5 and Tri10) proved that the inhibition of mycotoxin production by flavonoids occurred at the transcriptional level. However, the changes in Tri transcript levels were not significant in most apigenin and all kaempferol-treated cultures. In this study, a link was established between antioxidant and antiradical properties of flavonoids and their effects on fungi.
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Affiliation(s)
- Katarzyna Bilska
- Department of Microbiology and Mycology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, 10-719 Olsztyn, Poland.
| | - Kinga Stuper-Szablewska
- Department of Chemistry, Poznan University of Life Sciences, Wojska Polskiego 75, 60-637 Poznan, Poland.
| | - Tomasz Kulik
- Department of Microbiology and Mycology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, 10-719 Olsztyn, Poland.
| | - Maciej Buśko
- Department of Chemistry, Poznan University of Life Sciences, Wojska Polskiego 75, 60-637 Poznan, Poland.
| | - Dariusz Załuski
- Department of Plant Breeding and Seed Production, University of Warmia and Mazury in Olsztyn, Plac Łódzki 3, 10-727 Olsztyn, Poland.
| | - Sebastian Jurczak
- Department of Microbiology and Mycology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, 10-719 Olsztyn, Poland.
| | - Juliusz Perkowski
- Department of Chemistry, Poznan University of Life Sciences, Wojska Polskiego 75, 60-637 Poznan, Poland.
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