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Cárdenas PD, Landtved JP, Larsen SH, Lindegaard N, Wøhlk S, Jensen KR, Pattison DI, Burow M, Bak S, Crocoll C, Agerbirk N. Phytoalexins of the crucifer Barbarea vulgaris: Structural profile and correlation with glucosinolate turnover. PHYTOCHEMISTRY 2023; 213:113742. [PMID: 37269935 DOI: 10.1016/j.phytochem.2023.113742] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/25/2023] [Accepted: 05/28/2023] [Indexed: 06/05/2023]
Abstract
Phytoalexins are antimicrobial plant metabolites elicited by microbial attack or abiotic stress. We investigated phytoalexin profiles after foliar abiotic elicitation in the crucifer Barbarea vulgaris and interactions with the glucosinolate-myrosinase system. The treatment for abiotic elicitation was a foliar spray with CuCl2 solution, a usual eliciting agent, and three independent experiments were carried out. Two genotypes of B. vulgaris (G-type and P-type) accumulated the same three major phytoalexins in rosette leaves after treatment: phenyl-containing nasturlexin D and indole-containing cyclonasturlexin and cyclobrassinin. Phytoalexin levels were investigated daily by UHPLC-QToF MS and tended to differ among plant types and individual phytoalexins. In roots, phytoalexins were low or not detected. In treated leaves, typical total phytoalexin levels were in the range 1-10 nmol/g fresh wt. during three days after treatment while typical total glucosinolate (GSL) levels were three orders of magnitude higher. Levels of some minor GSLs responded to the treatment: phenethylGSL (PE) and 4-substituted indole GSLs. Levels of PE, a suggested nasturlexin D precursor, were lower in treated plants than controls. Another suggested precursor GSL, 3-hydroxyPE, was not detected, suggesting PE hydrolysis to be a key biosynthetic step. Levels of 4-substituted indole GSLs differed markedly between treated and control plants in most experiments, but not in a consistent way. The dominant GSLs, glucobarbarins, are not believed to be phytoalexin precursors. We observed statistically significant linear correlations between total major phytoalexins and the glucobarbarin products barbarin and resedine, suggesting that GSL turnover for phytoalexin biosynthesis was unspecific. In contrast, we did not find correlations between total major phytoalexins and raphanusamic acid or total glucobarbarins and barbarin. In conclusion, two groups of phytoalexins were detected in B. vulgaris, apparently derived from the GSLs PE and indol-3-ylmethylGSL. Phytoalexin biosynthesis was accompanied by depletion of the precursor PE and by turnover of major non-precursor GSLs to resedine. This work paves the way for identifying and characterizing genes and enzymes in the biosyntheses of phytoalexins and resedine.
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Affiliation(s)
- Pablo D Cárdenas
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark
| | - Jonas P Landtved
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark
| | - Signe H Larsen
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark
| | - Nicolai Lindegaard
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark
| | - Sebastian Wøhlk
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark
| | - Karen R Jensen
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark
| | - David I Pattison
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark
| | - Meike Burow
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark
| | - Søren Bak
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark
| | - Christoph Crocoll
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark
| | - Niels Agerbirk
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, 1871, Frederiksberg C, Denmark.
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Pérez-Llorca M, Pollmann S, Müller M. Ethylene and Jasmonates Signaling Network Mediating Secondary Metabolites under Abiotic Stress. Int J Mol Sci 2023; 24:ijms24065990. [PMID: 36983071 PMCID: PMC10051637 DOI: 10.3390/ijms24065990] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 03/12/2023] [Accepted: 03/17/2023] [Indexed: 03/30/2023] Open
Abstract
Plants are sessile organisms that face environmental threats throughout their life cycle, but increasing global warming poses an even more existential threat. Despite these unfavorable circumstances, plants try to adapt by developing a variety of strategies coordinated by plant hormones, resulting in a stress-specific phenotype. In this context, ethylene and jasmonates (JAs) present a fascinating case of synergism and antagonism. Here, Ethylene Insensitive 3/Ethylene Insensitive-Like Protein1 (EIN3/EIL1) and Jasmonate-Zim Domain (JAZs)-MYC2 of the ethylene and JAs signaling pathways, respectively, appear to act as nodes connecting multiple networks to regulate stress responses, including secondary metabolites. Secondary metabolites are multifunctional organic compounds that play crucial roles in stress acclimation of plants. Plants that exhibit high plasticity in their secondary metabolism, which allows them to generate near-infinite chemical diversity through structural and chemical modifications, are likely to have a selective and adaptive advantage, especially in the face of climate change challenges. In contrast, domestication of crop plants has resulted in change or even loss in diversity of phytochemicals, making them significantly more vulnerable to environmental stresses over time. For this reason, there is a need to advance our understanding of the underlying mechanisms by which plant hormones and secondary metabolites respond to abiotic stress. This knowledge may help to improve the adaptability and resilience of plants to changing climatic conditions without compromising yield and productivity. Our aim in this review was to provide a detailed overview of abiotic stress responses mediated by ethylene and JAs and their impact on secondary metabolites.
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Affiliation(s)
- Marina Pérez-Llorca
- Department of Biology, Health and the Environment, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain
| | - Stephan Pollmann
- Centro de Biotecnología y Genómica de Plantas, Instituto Nacional de Investigación y Tecnología Agraria y Alimentación (INIA/CSIC), Universidad Politécnica de Madrid (UPM), Campus de Montegancedo, Pozuelo de Alarcón, 28223 Madrid, Spain
- Departamento de Biotecnología-Biología Vegetal, Escuela Técnica Superior de Ingeniería Agronómica, Ali-Mentaria y de Biosistemas, Universidad Politécnica de Madrid (UPM), 28040 Madrid, Spain
| | - Maren Müller
- Department of Evolutionary Biology, Ecology and Environmental Sciences, Faculty of Biology, University of Barcelona, 08028 Barcelona, Spain
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Riley-Saldaña CA, de-la-Cruz-Chacón I, Cruz-Ortega MDR, Castro-Moreno M, González-Esquinca AR. Do Colletotrichum gloeosporioides and Rhizopus stolonifer induce alkaloidal and antifungal responses in Annona muricata seedlings? Z NATURFORSCH C 2023; 78:57-63. [PMID: 35942979 DOI: 10.1515/znc-2021-0297] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 07/15/2022] [Indexed: 01/11/2023]
Abstract
The benzylisoquinoline alkaloids of Annona muricata have been isolated, but their physiological or ecological role is unknown. The objective was to explore whether these secondary metabolites are involved in defense against phytopathogenic fungi. To do this, the alkaloidal response of 6-leaf seedlings of A. muricata was analyzed, previously inoculated with Colletotrichum gloeosporioides and Rhizopus stolonifer. Before and after inoculation, alkaloidal extracts of roots, stems, and leaves were obtained, and the antifungal activity was evaluated in vitro. The alkaloids anonaine, reticuline, nornuciferine, assimilobine, and coreximine were identified. C. gloeosporioides caused variable increases in the production of anonaine, reticuline and nornuciferine (10-1200%), while R. stolonifer only stimulated the increase of nornuciferin and anonaine (10%) in the stems and leaves. The alkaloidal extracts of inoculated seedlings increased the antifungal activity, both against the pathogen elicitor and against the second target pathogen. These findings suggest that the alkaloids participate in the antifungal defense mechanism.
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Affiliation(s)
- Christian Anabi Riley-Saldaña
- Laboratorio de Fisiología y Química Vegetal, Instituto de Ciencias Biológicas, Universidad de Ciencias y Artes de Chiapas (UNICACH), Libramiento Norte Poniente 1150. Col. Lajas Maciel, CP. 29039, Tuxtla Gutiérrez, Chiapas, Mexico
| | - Ivan de-la-Cruz-Chacón
- Laboratorio de Fisiología y Química Vegetal, Instituto de Ciencias Biológicas, Universidad de Ciencias y Artes de Chiapas (UNICACH), Libramiento Norte Poniente 1150. Col. Lajas Maciel, CP. 29039, Tuxtla Gutiérrez, Chiapas, Mexico
| | - María Del Rocío Cruz-Ortega
- Instituto de Ecología, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, 3000 Delegación Coyoacán. CP. 04360 Ciudad de México, Mexico
| | - Marisol Castro-Moreno
- Laboratorio de Fisiología y Química Vegetal, Instituto de Ciencias Biológicas, Universidad de Ciencias y Artes de Chiapas (UNICACH), Libramiento Norte Poniente 1150. Col. Lajas Maciel, CP. 29039, Tuxtla Gutiérrez, Chiapas, Mexico
| | - Alma Rosa González-Esquinca
- Laboratorio de Fisiología y Química Vegetal, Instituto de Ciencias Biológicas, Universidad de Ciencias y Artes de Chiapas (UNICACH), Libramiento Norte Poniente 1150. Col. Lajas Maciel, CP. 29039, Tuxtla Gutiérrez, Chiapas, Mexico
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Cook J, Hui JPM, Zhang J, Kember M, Berrué F, Zhang J, Cheng Z. Production of quorum sensing-related metabolites and phytoalexins during Pseudomonas aeruginosa-Brassica napus interaction. MICROBIOLOGY (READING, ENGLAND) 2022; 168. [PMID: 35980361 DOI: 10.1099/mic.0.001212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Pseudomonas aeruginosa is an opportunistic bacterial pathogen that has been shown to interact with many organisms throughout the domains of life, including plants. How this broad-host-range bacterium interacts with each of its diverse hosts, especially the metabolites that mediate these interactions, is not completely known. In this work, we used a liquid culture root infection system to collect plant and bacterial metabolites on days 1, 3 and 5 post-P. aeruginosa (strain PA14) infection of the oilseed plant, canola (Brassica napus). Using MS-based metabolomics approaches, we identified the overproduction of quorum sensing (QS)-related (both signalling molecules and regulated products) metabolites by P. aeruginosa while interacting with canola plants. However, the P. aeruginosa infection induced the production of several phytoalexins, which is a part of the hallmark plant defence response to microbes. The QS system of PA14 appears to only mediate part of the canola-P. aeruginosa metabolomic interactions, as the use of isogenic mutant strains of each of the three QS signalling branches did not significantly affect the induction of the phytoalexin brassilexin, while induction of spirobrassinin was significantly decreased. Interestingly, a treatment of purified QS molecules in the absence of bacteria was not able to induce any phytoalexin production, suggesting that active bacterial colonization is required for eliciting phytoalexin production. Furthermore, we identified that brassilexin, the only commercially available phytoalexin that was detected in this study, demonstrated a MIC of 400 µg ml-1 against P. aeruginosa PA14. The production of phytoalexins can be an effective component of canola innate immunity to keep potential infections by the opportunistic pathogen P. aeruginosa at bay.
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Affiliation(s)
- Jamie Cook
- Department of Microbiology and Immunology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Joseph P M Hui
- Aquatic and Crop Resource Development Research Centre, National Research Council Canada, Halifax, Nova Scotia, Canada
| | - Janie Zhang
- Department of Microbiology and Immunology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Michaela Kember
- Department of Microbiology and Immunology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Fabrice Berrué
- Aquatic and Crop Resource Development Research Centre, National Research Council Canada, Halifax, Nova Scotia, Canada
| | - Junzeng Zhang
- Aquatic and Crop Resource Development Research Centre, National Research Council Canada, Halifax, Nova Scotia, Canada
| | - Zhenyu Cheng
- Department of Microbiology and Immunology, Dalhousie University, Halifax, Nova Scotia, Canada
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Yu J, Tu X, Huang AC. Functions and biosynthesis of plant signaling metabolites mediating plant-microbe interactions. Nat Prod Rep 2022; 39:1393-1422. [PMID: 35766105 DOI: 10.1039/d2np00010e] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Covering: 2015-2022Plants and microbes have coevolved since their appearance, and their interactions, to some extent, define plant health. A reasonable fraction of small molecules plants produced are involved in mediating plant-microbe interactions, yet their functions and biosynthesis remain fragmented. The identification of these compounds and their biosynthetic genes will open up avenues for plant fitness improvement by manipulating metabolite-mediated plant-microbe interactions. Herein, we integrate the current knowledge on their chemical structures, bioactivities, and biosynthesis with the view of providing a high-level overview on their biosynthetic origins and evolutionary trajectory, and pinpointing the yet unknown and key enzymatic steps in diverse biosynthetic pathways. We further discuss the theoretical basis and prospects for directing plant signaling metabolite biosynthesis for microbe-aided plant health improvement in the future.
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Affiliation(s)
- Jingwei Yu
- Key Laboratory of Molecular Design for Plant Cell Factory of Guangdong Higher Education Institutes, SUSTech-PKU Institute of Plant and Food Science, Department of Biology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China.
| | - Xingzhao Tu
- Key Laboratory of Molecular Design for Plant Cell Factory of Guangdong Higher Education Institutes, SUSTech-PKU Institute of Plant and Food Science, Department of Biology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China.
| | - Ancheng C Huang
- Key Laboratory of Molecular Design for Plant Cell Factory of Guangdong Higher Education Institutes, SUSTech-PKU Institute of Plant and Food Science, Department of Biology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China.
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Gong C, Zhou G, Jing D, Song H, Xu J, Meng D. Three New Compounds from Delphinium kamaonense Hunth and Their in Vitro Cytotoxic and Potential Antioxidant Activities. Chem Biodivers 2022; 19:e202200463. [PMID: 35785443 DOI: 10.1002/cbdv.202200463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 06/23/2022] [Indexed: 11/08/2022]
Abstract
A new amide (1), two new phenylpropanoid derivatives (2, 3), along with three new natural products, including three nitrogen chirality compounds, N-(3-methoxy-1,3-dioxopropyl)-D-phenylalanine methyl ester (4), N-(3-methoxy-1,3-dioxopropyl)-L-phenylalanine methyl ester (5), and N-acetyl-L-phenylalanine methyl ester (6), as well as dimethyl (2R,3R)-2-hydroxy-3-(((E)-3-(4-hydroxyphenyl)acryloyl)oxy)succinate (7) and dimethyl (S,E)-2-((3-(4-hydroxy-3-methoxyphenyl)acryloyl)oxy)succinate (8) were isolated from Delphinium kamaonense Hunth. Their structures were elucidated by extensive analysis of 1D and 2D NMR, and HR-ESI-MS experiments, and the absolute configurations were determined by comparative analysis of specific optical rotation. Compound 1 exhibited a moderate cytotoxicity effect against Hep-3B cancer cell lines (IC50 41.39±0.13 μM) and an excellent antioxidant activity (IC50 0.527±0.06 μM in ABTS assay, and 1.235±0.09 μM in DPPH assay, respectively), which was superior to vitamin C in ABTS (IC50 1.670±0.07 μM) and DPPH (IC50 19.10±0.40 μM) methods.
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Affiliation(s)
- Chang Gong
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, P. R. China
| | - Guangxin Zhou
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, P. R. China
| | - Di Jing
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, P. R. China
| | - Huijie Song
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, P. R. China
| | - Jixuan Xu
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, P. R. China
| | - Dali Meng
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, 110016, P. R. China
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7
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Tsiftsoglou OS, Stefanakis MK, Kalpourtzi EN, Hadjipavlou-Litina DI, Lazari DM. Chemical constituents isolated from the aerial parts of Helleborus cyclophyllus (A. Braun) Boiss. (Ranunculaceae), evaluation of their antioxidant and anti-inflammatory activity in vitro and virtual screening of molecular properties and bioactivity score. Nat Prod Res 2022; 36:6031-6038. [DOI: 10.1080/14786419.2022.2041009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Olga St. Tsiftsoglou
- Laboratory of Pharmacognosy, Faculty of Health sciences, School of Pharmacy, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Michalis K. Stefanakis
- Laboratory of Organic Chemistry, School of Sciences and Engineering, Department of Chemistry, University of Crete, Heraklion, Greece
| | - Eirini N. Kalpourtzi
- Laboratory of Pharmacognosy, Faculty of Health sciences, School of Pharmacy, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Dimitra I. Hadjipavlou-Litina
- Department of Pharmaceutical Chemistry, Faculty of Health Sciences, School of Pharmacy, Aristotle University of Thessaloniki, Greece
| | - Diamanto M. Lazari
- Laboratory of Pharmacognosy, Faculty of Health sciences, School of Pharmacy, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Bakhshandeh E, Jamali M. Halothermal and hydrothermal time models describe germination responses of canola seeds to ageing. PLANT BIOLOGY (STUTTGART, GERMANY) 2021; 23:621-629. [PMID: 33683764 DOI: 10.1111/plb.13251] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 03/02/2021] [Indexed: 06/12/2023]
Abstract
Hydrothermal time (HTT) and halothermal time (HaloTT) models were used to quantitatively characterize the combined effects of temperature (T), water potential (ψ) and NaCl concentration on seed germination of canola after different accelerated ageing periods (AAP) at 42 °C and 100% humidity. Seed germination time courses were observed and electrical conductivities of seed leachates were measured in all experiments. The cardinal temperatures estimated by both models were 4.6, 28 and 35 °C for the base (Tb ), optimum (To ) and ceiling (Tc ) temperatures in water (0 MPa), respectively, when the seeds were not aged. The Tb increased with AAP, while the Tc decreased and the To remained constant at all AAP. Below To , the median base water potentials (ψb (50)) were -1.07, -0.73, -0.48 and -0.39 MPa for the AAP levels of 0, 24, 36 and 48 h, respectively. These values were more negative when germination occurred in salt solutions (the base NaCl concentrations converted to ψ were -1.25, -0.81, -0.51 and -0.41 MPa, respectively), due to uptake of salt ions. Thresholds became more positive above To and reached zero at Tc in all AAP. Seed osmotic adjustment capacity declined linearly with increasing AAP while the conductivity of seed leachates increased in association with the loss of seed vigour. Significant correlations between conductivity results and the parameters of HTT and HaloTT models suggest that they could be considered as effective descriptors of canola seed vigour.
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Affiliation(s)
- E Bakhshandeh
- Genetics and Agricultural Biotechnology Institute of Tabarestan & Sari Agricultural Sciences and Natural Resources University, Sari, Iran
| | - M Jamali
- Department of Agroecology, Environmental Sciences Research Institute, Shahid Beheshti University, Tehran, Iran
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Liu Z, Wang H, Xie J, Lv J, Zhang G, Hu L, Luo S, Li L, Yu J. The Roles of Cruciferae Glucosinolates in Disease and Pest Resistance. PLANTS 2021; 10:plants10061097. [PMID: 34070720 PMCID: PMC8229868 DOI: 10.3390/plants10061097] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 05/19/2021] [Accepted: 05/21/2021] [Indexed: 12/17/2022]
Abstract
With the expansion of the area under Cruciferae vegetable cultivation, and an increase in the incidence of natural threats such as pests and diseases globally, Cruciferae vegetable losses caused by pathogens, insects, and pests are on the rise. As one of the key metabolites produced by Cruciferae vegetables, glucosinolate (GLS) is not only an indicator of their quality but also controls infestation by numerous fungi, bacteria, aphids, and worms. Today, the safe and pollution-free production of vegetables is advocated globally, and environmentally friendly pest and disease control strategies, such as biological control, to minimize the adverse impacts of pathogen and insect pest stress on Cruciferae vegetables, have attracted the attention of researchers. This review explores the mechanisms via which GLS acts as a defensive substance, participates in responses to biotic stress, and enhances plant tolerance to the various stress factors. According to the current research status, future research directions are also proposed.
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Affiliation(s)
- Zeci Liu
- Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China;
- College of Horticulture, Gansu Agriculture University, Lanzhou 730070, China; (H.W.); (J.X.); (J.L.); (G.Z.); (L.H.); (S.L.); (L.L.)
| | - Huiping Wang
- College of Horticulture, Gansu Agriculture University, Lanzhou 730070, China; (H.W.); (J.X.); (J.L.); (G.Z.); (L.H.); (S.L.); (L.L.)
| | - Jianming Xie
- College of Horticulture, Gansu Agriculture University, Lanzhou 730070, China; (H.W.); (J.X.); (J.L.); (G.Z.); (L.H.); (S.L.); (L.L.)
| | - Jian Lv
- College of Horticulture, Gansu Agriculture University, Lanzhou 730070, China; (H.W.); (J.X.); (J.L.); (G.Z.); (L.H.); (S.L.); (L.L.)
| | - Guobin Zhang
- College of Horticulture, Gansu Agriculture University, Lanzhou 730070, China; (H.W.); (J.X.); (J.L.); (G.Z.); (L.H.); (S.L.); (L.L.)
| | - Linli Hu
- College of Horticulture, Gansu Agriculture University, Lanzhou 730070, China; (H.W.); (J.X.); (J.L.); (G.Z.); (L.H.); (S.L.); (L.L.)
| | - Shilei Luo
- College of Horticulture, Gansu Agriculture University, Lanzhou 730070, China; (H.W.); (J.X.); (J.L.); (G.Z.); (L.H.); (S.L.); (L.L.)
| | - Lushan Li
- College of Horticulture, Gansu Agriculture University, Lanzhou 730070, China; (H.W.); (J.X.); (J.L.); (G.Z.); (L.H.); (S.L.); (L.L.)
- Panzhihua Academy of Agricultural and Forestry Sciences, Panzhihua 617000, China
| | - Jihua Yu
- Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Agricultural University, Lanzhou 730070, China;
- College of Horticulture, Gansu Agriculture University, Lanzhou 730070, China; (H.W.); (J.X.); (J.L.); (G.Z.); (L.H.); (S.L.); (L.L.)
- Correspondence: ; Tel.: +86-931-763-2188
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Bacterial Endophytes: The Hidden Actor in Plant Immune Responses against Biotic Stress. PLANTS 2021; 10:plants10051012. [PMID: 34069509 PMCID: PMC8161118 DOI: 10.3390/plants10051012] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/04/2021] [Accepted: 05/13/2021] [Indexed: 02/06/2023]
Abstract
Bacterial endophytes constitute an essential part of the plant microbiome and are described to promote plant health by different mechanisms. The close interaction with the host leads to important changes in the physiology of the plant. Although beneficial bacteria use the same entrance strategies as bacterial pathogens to colonize and enter the inner plant tissues, the host develops strategies to select and allow the entrance to specific genera of bacteria. In addition, endophytes may modify their own genome to adapt or avoid the defense machinery of the host. The present review gives an overview about bacterial endophytes inhabiting the phytosphere, their diversity, and the interaction with the host. Direct and indirect defenses promoted by the plant-endophyte symbiont exert an important role in controlling plant defenses against different stresses, and here, more specifically, is discussed the role against biotic stress. Defenses that should be considered are the emission of volatiles or antibiotic compounds, but also the induction of basal defenses and boosting plant immunity by priming defenses. The primed defenses may encompass pathogenesis-related protein genes (PR family), antioxidant enzymes, or changes in the secondary metabolism.
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Fadiji AE, Babalola OO. Elucidating Mechanisms of Endophytes Used in Plant Protection and Other Bioactivities With Multifunctional Prospects. Front Bioeng Biotechnol 2020; 8:467. [PMID: 32500068 PMCID: PMC7242734 DOI: 10.3389/fbioe.2020.00467] [Citation(s) in RCA: 147] [Impact Index Per Article: 36.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 04/22/2020] [Indexed: 01/06/2023] Open
Abstract
Endophytes are abundant in plants and studies are continuously emanating on their ability to protect plants from pathogens that cause diseases especially in the field of agriculture. The advantage that endophytes have over other biocontrol agents is the ability to colonize plant's internal tissues. Despite this attributes, a deep understanding of the mechanism employed by endophytes in protecting the plant from diseases is still required for both effectiveness and commercialization. Also, there are increasing cases of antibiotics resistance among most causative agents of diseases in human beings, which calls for an alternative drug discovery using natural sources. Endophytes present themselves as a storehouse of many bioactive metabolites such as phenolic acids, alkaloids, quinones, steroids, saponins, tannins, and terpenoids which makes them a promising candidate for anticancer, antimalarial, antituberculosis, antiviral, antidiabetic, anti-inflammatory, antiarthritis, and immunosuppressive properties among many others, even though the primary function of bioactive compounds from endophytes is to make the host plants resistant to both abiotic and biotic stresses. Endophytes still present themselves as a peculiar source of possible drugs. This study elucidates the mechanisms employed by endophytes in protecting the plant from diseases and different bioactivities of importance to humans with a focus on endophytic bacteria and fungi.
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Affiliation(s)
| | - Olubukola Oluranti Babalola
- Food Security and Safety Niche, Faculty of Natural and Agricultural Sciences, North-West University, Mmabatho, South Africa
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Ramirez D, Abellán-Victorio A, Beretta V, Camargo A, Moreno DA. Functional Ingredients From Brassicaceae Species: Overview and Perspectives. Int J Mol Sci 2020; 21:E1998. [PMID: 32183429 PMCID: PMC7139885 DOI: 10.3390/ijms21061998] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 03/12/2020] [Accepted: 03/13/2020] [Indexed: 12/31/2022] Open
Abstract
Brassicaceae vegetables are important crops consumed worldwide due to their unique flavor, and for their broadly recognized functional properties, which are directly related to their phytochemical composition. Isothiocyanates (ITC) are the most characteristic compounds, considered responsible for their pungent taste. Besides ITC, these vegetables are also rich in carotenoids, phenolics, minerals, and vitamins. Consequently, Brassica's phytochemical profile makes them an ideal natural source for improving the nutritional quality of manufactured foods. In this sense, the inclusion of functional ingredients into food matrices are of growing interest. In the present work, Brassicaceae ingredients, functionality, and future perspectives are reviewed.
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Affiliation(s)
- Daniela Ramirez
- Laboratorio de Cromatografía para Agroalimentos, Facultad de Ciencias Agrarias, UNCuyo, Mendoza 54 261, Argentina; (D.R.); (V.B.); (A.C.)
- Instituto de Biología Agrícola de Mendoza, CONICET Mendoza 54 261, Argentina
| | - Angel Abellán-Victorio
- Phytochemistry and Healthy Foods Laboratory, Department of Food Science and Technology, Spanish National Research Council for Scientific Research (CEBAS-CSIC), Murcia 30100, Spain;
| | - Vanesa Beretta
- Laboratorio de Cromatografía para Agroalimentos, Facultad de Ciencias Agrarias, UNCuyo, Mendoza 54 261, Argentina; (D.R.); (V.B.); (A.C.)
| | - Alejandra Camargo
- Laboratorio de Cromatografía para Agroalimentos, Facultad de Ciencias Agrarias, UNCuyo, Mendoza 54 261, Argentina; (D.R.); (V.B.); (A.C.)
- Instituto de Biología Agrícola de Mendoza, CONICET Mendoza 54 261, Argentina
| | - Diego A. Moreno
- Phytochemistry and Healthy Foods Laboratory, Department of Food Science and Technology, Spanish National Research Council for Scientific Research (CEBAS-CSIC), Murcia 30100, Spain;
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Chittem K, Yajima WR, Goswami RS, del Río Mendoza LE. Transcriptome analysis of the plant pathogen Sclerotinia sclerotiorum interaction with resistant and susceptible canola (Brassica napus) lines. PLoS One 2020; 15:e0229844. [PMID: 32160211 PMCID: PMC7065775 DOI: 10.1371/journal.pone.0229844] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 02/14/2020] [Indexed: 12/11/2022] Open
Abstract
Sclerotinia stem rot is an economically important disease of canola (Brassica napus) and is caused by the fungal pathogen Sclerotinia sclerotiorum. This study evaluated the differential gene expression patterns of S. sclerotiorum during disease development on two canola lines differing in susceptibility to this pathogen. Sequencing of the mRNA libraries derived from inoculated petioles and mycelium grown on liquid medium generated approximately 164 million Illumina reads, including 95 million 75-bp-single reads, and 69 million 50-bp-paired end reads. Overall, 36% of the quality filter-passed reads were mapped to the S. sclerotiorum reference genome. On the susceptible line, 1301 and 1214 S. sclerotiorum genes were differentially expressed at early (8-16 hours post inoculation (hpi)) and late (24-48 hpi) infection stages, respectively, while on the resistant line, 1311 and 1335 genes were differentially expressed at these stages, respectively. Gene ontology (GO) categories associated with cell wall degradation, detoxification of host metabolites, peroxisome related activities like fatty acid ß-oxidation, glyoxylate cycle, oxidoreductase activity were significantly enriched in the up-regulated gene sets on both susceptible and resistant lines. Quantitative RT-PCR of six selected DEGs further validated the RNA-seq differential gene expression analysis. The regulation of effector genes involved in host defense suppression or evasion during the early infection stage, and the expression of effectors involved in host cell death in the late stage of infection provide supporting evidence for a two-phase infection model involving a brief biotrophic phase during early stages of infection. The findings from this study emphasize the role of peroxisome related pathways along with cell wall degradation and detoxification of host metabolites as the key mechanisms underlying pathogenesis of S. sclerotiorum on B. napus.
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Affiliation(s)
- Kishore Chittem
- Department of Plant Pathology, North Dakota State University, Fargo, North Dakota, United States of America
| | - William R. Yajima
- Department of Plant Pathology, North Dakota State University, Fargo, North Dakota, United States of America
| | - Rubella S. Goswami
- Department of Plant Pathology, North Dakota State University, Fargo, North Dakota, United States of America
- USDA-APHIS, Riverdale, Maryland, United States of America
| | - Luis E. del Río Mendoza
- Department of Plant Pathology, North Dakota State University, Fargo, North Dakota, United States of America
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Beszterda M, Nogala‐Kałucka M. Current Research Developments on the Processing and Improvement of the Nutritional Quality of Rapeseed (
Brassica napus
L.). EUR J LIPID SCI TECH 2019. [DOI: 10.1002/ejlt.201800045] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Monika Beszterda
- Department of Biochemistry and Food AnalysisPoznan University of Life SciencesMazowiecka 4860‐623PoznanPoland
| | - Małgorzata Nogala‐Kałucka
- Department of Biochemistry and Food AnalysisPoznan University of Life SciencesMazowiecka 4860‐623PoznanPoland
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15
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Rédei D, Kúsz N, Rafai T, Bogdanov A, Burián K, Csorba A, Mándi A, Kurtán T, Vasas A, Hohmann J. 14-Noreudesmanes and a phenylpropane heterodimer from sea buckthorn berry inhibit Herpes simplex type 2 virus replication. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.01.050] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Ridzuan R, Rafii MY, Ismail SI, Mohammad Yusoff M, Miah G, Usman M. Breeding for Anthracnose Disease Resistance in Chili: Progress and Prospects. Int J Mol Sci 2018; 19:E3122. [PMID: 30314374 PMCID: PMC6213496 DOI: 10.3390/ijms19103122] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 08/17/2018] [Accepted: 08/18/2018] [Indexed: 11/16/2022] Open
Abstract
Chili anthracnose is one of the most devastating fungal diseases affecting the quality and yield production of chili. The aim of this review is to summarize the current knowledge concerning the chili anthracnose disease, as well as to explore the use of marker-assisted breeding programs aimed at improving anthracnose disease resistance in this species. This disease is caused by the Colletotrichum species complex, and there have been ongoing screening methods of chili pepper genotypes with resistance to anthracnose in the field, as well as in laboratories. Conventional breeding involves phenotypic selection in the field, and it is more time-consuming compared to molecular breeding. The use of marker-assisted selection (MAS) on the basis of inheritance, the segregation ratio of resistance to susceptibility, and the gene-controlling resistance may contribute to the development of an improved chili variety and speed up the selection process, while also reducing genetic drag in the segregating population. More importantly, by using molecular markers, the linkage groups are determined dominantly and co-dominantly, meaning that the implementation of a reliable method to produce resistant varieties is crucial in future breeding programs. This updated information will offer a supportive direction for chili breeders to develop an anthracnose-resistant chili variety.
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Affiliation(s)
- Raihana Ridzuan
- Laboratory of Climate-Smart Food Crop Production, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia.
| | - Mohd Y Rafii
- Laboratory of Climate-Smart Food Crop Production, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia.
- Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia.
| | - Siti Izera Ismail
- Department of Plant Protection, Faculty of Agriculture, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia.
| | - Martini Mohammad Yusoff
- Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia.
| | - Gous Miah
- Laboratory of Climate-Smart Food Crop Production, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia.
| | - Magaji Usman
- Laboratory of Climate-Smart Food Crop Production, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia.
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17
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Wang YM, Zhao JQ, Yang JL, Idong PT, Mei LJ, Tao YD, Shi YP. Antioxidant and α-glucosidase inhibitory ingredients identified from Jerusalem artichoke flowers. Nat Prod Res 2017; 33:584-588. [DOI: 10.1080/14786419.2017.1399379] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Yan-Ming Wang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, PR China
| | - Jian-Qiang Zhao
- Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, PR China
| | - Jun-Li Yang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, PR China
| | - Pema Tsering Idong
- Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, PR China
| | - Li-Juan Mei
- Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, PR China
| | - Yan-Duo Tao
- Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, PR China
| | - Yan-Ping Shi
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, PR China
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18
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Nayak SN, Agarwal G, Pandey MK, Sudini HK, Jayale AS, Purohit S, Desai A, Wan L, Guo B, Liao B, Varshney RK. Aspergillus flavus infection triggered immune responses and host-pathogen cross-talks in groundnut during in-vitro seed colonization. Sci Rep 2017; 7:9659. [PMID: 28851929 PMCID: PMC5574979 DOI: 10.1038/s41598-017-09260-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 07/19/2017] [Indexed: 11/25/2022] Open
Abstract
Aflatoxin contamination, caused by fungal pathogen Aspergillus flavus, is a major quality and health problem delimiting the trade and consumption of groundnut (Arachis hypogaea L.) worldwide. RNA-seq approach was deployed to understand the host-pathogen interaction by identifying differentially expressed genes (DEGs) for resistance to in-vitro seed colonization (IVSC) at four critical stages after inoculation in J 11 (resistant) and JL 24 (susceptible) genotypes of groundnut. About 1,344.04 million sequencing reads have been generated from sixteen libraries representing four stages in control and infected conditions. About 64% and 67% of quality filtered reads (1,148.09 million) were mapped onto A (A. duranensis) and B (A. ipaёnsis) subgenomes of groundnut respectively. About 101 million unaligned reads each from J 11 and JL 24 were used to map onto A. flavus genome. As a result, 4,445 DEGs including defense-related genes like senescence-associated proteins, resveratrol synthase, 9s-lipoxygenase, pathogenesis-related proteins were identified. In A. flavus, about 578 DEGs coding for growth and development of fungus, aflatoxin biosynthesis, binding, transport, and signaling were identified in compatible interaction. Besides identifying candidate genes for IVSC resistance in groundnut, the study identified the genes involved in host-pathogen cross-talks and markers that can be used in breeding resistant varieties.
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Affiliation(s)
- Spurthi N Nayak
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India
- Department of Biotechnology, University of Agricultural Sciences, Dharwad, India
| | - Gaurav Agarwal
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India
- Crop Protection and Management Research Unit, USDA-Agricultural Research Service, Tifton, GA, USA
- University of Georgia, Department of Plant Pathology, Tifton, GA, USA
| | - Manish K Pandey
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India
| | - Hari K Sudini
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India
| | - Ashwin S Jayale
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India
| | - Shilp Purohit
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India
| | - Aarthi Desai
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India
| | - Liyun Wan
- Oil Crops Research Institute (OCRI), Chinese Academy of Agricultural Sciences (CAAS), Wuhan, China
| | - Baozhu Guo
- Crop Protection and Management Research Unit, USDA-Agricultural Research Service, Tifton, GA, USA
| | - Boshou Liao
- Oil Crops Research Institute (OCRI), Chinese Academy of Agricultural Sciences (CAAS), Wuhan, China
| | - Rajeev K Varshney
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India.
- The University of Western Australia, Crawley, WA, Australia.
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19
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Pedras MSC, To QH. Non-indolyl cruciferous phytoalexins: Nasturlexins and tridentatols, a striking convergent evolution of defenses in terrestrial plants and marine animals? PHYTOCHEMISTRY 2015; 113:57-63. [PMID: 25152450 DOI: 10.1016/j.phytochem.2014.07.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Revised: 07/08/2014] [Accepted: 07/11/2014] [Indexed: 06/03/2023]
Abstract
Highly specialized chemical defense pathways are a particularly noteworthy metabolic characteristic of sessile organisms, whether terrestrial or marine, providing protection against pests and diseases. For this reason, knowledge of the metabolites involved in these processes is crucial to producing ecologically fit crops. Toward this end, the elicited chemical defenses of the crucifer watercress (Nasturtium officinale R. Br.), i.e. phytoalexins, were investigated and are reported. Almost three decades after publication of cruciferous phytoalexins derived from (S)-Trp, phytoalexins derived from other aromatic amino acids were isolated; their chemical structures were determined by analyses of their spectroscopic data and confirmed by synthesis. Nasturlexin A, nasturlexin B, and tridentatol C are hitherto unknown phenyl containing cruciferous phytoalexins produced by watercress under abiotic stress; tridentatol C is also produced by a marine animal (Tridentata marginata), where it functions in chemical defense against predators. The biosynthesis of these metabolites in both a terrestrial plant and a marine animal suggests a convergent evolution of unique metabolic pathways recruited for defense.
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Affiliation(s)
- M Soledade C Pedras
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada.
| | - Q Huy To
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK S7N 5C9, Canada
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20
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Pedras MSC, Yaya EE. Plant Chemical Defenses: Are all Constitutive Antimicrobial Metabolites Phytoanticipins? Nat Prod Commun 2015. [DOI: 10.1177/1934578x1501000142] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A critical perspective on phytoanticipins, constitutive plant secondary metabolites with defensive roles against microbes is presented. This mini-review focuses on the chemical groups and structural types of defensive plant metabolites thus far not reviewed from the phytoanticipin perspective: i) fatty acid derivatives and polyketides, ii) terpenoids, iii) shikimates, phenylpropanoids and derivatives, and iv) benzylisoquinoline and pyrrolizidine alkaloids. The more traditional groups of phytoanticipins are briefly summarized, with particular focus on the latest results: i) benzoxazinoids, ii) cyanogenic glycosides, iii) glucosinolates and their metabolic products, and iv) saponins. Current evidence suggests that a better understanding of the functions of plant metabolites will drive their application to protect crops against microbial diseases.
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Affiliation(s)
- M. Soledade C. Pedras
- Department of Chemistry, 110 Science Place, University of Saskatchewan, Saskatoon, SK S7N 5C9 Canada
| | - Estifanos E. Yaya
- Department of Chemistry, 110 Science Place, University of Saskatchewan, Saskatoon, SK S7N 5C9 Canada
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21
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Jeong SW, Kim HG, Park S, Lee JH, Kim YH, Kim GS, Jin JS, Kwak YS, Huh MR, Lee JE, Song Y, Shin SC. Variation in flavonoid levels in Citrus benikoji Hort. ex. Tan. infected by Colletotrichum gloeosporioides. Food Chem 2014; 148:284-8. [DOI: 10.1016/j.foodchem.2013.10.070] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Revised: 09/02/2013] [Accepted: 10/15/2013] [Indexed: 11/27/2022]
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22
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Lima GPP, Vianello F, Corrêa CR, Campos RADS, Borguini MG. Polyphenols in Fruits and Vegetables and Its Effect on Human Health. ACTA ACUST UNITED AC 2014. [DOI: 10.4236/fns.2014.511117] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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23
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Lee JH, Jeong SW, Cho YA, Park S, Kim YH, Bae DW, Chung JI, Kwak YS, Jeong MJ, Park SC, Shim JH, Jin JS, Shin SC. Determination of the variations in levels of phenolic compounds in soybean (Glycine max Merr.) sprouts infected by anthracnose (Colletotrichum gloeosporioides). JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2013; 93:3081-6. [PMID: 23526300 DOI: 10.1002/jsfa.6142] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Revised: 03/07/2013] [Accepted: 03/22/2013] [Indexed: 05/23/2023]
Abstract
BACKGROUND Soybean sprouts (Kongnamool) are one of the most popular and nutritive traditional vegetables in East Asia. Anthracnose caused by Colletotrichum gloeosporioides is one of the most serious diseases of soybean sprouts. In order to obtain basic information for breeding and/or selecting soybean genotypes with increased natural defense against anthracnose, phenolic compounds were profiled for healthy and infected soybean (Glycine max Merr.) sprouts by using high-performance liquid chromatography coupled with tandem mass spectrometry. RESULTS Tryptophan and eight phenolic compounds (daidzin, genistin, malonyldaidzin, malonylgenistin, daidzein, glycitein, genistein and coumestrol) were determined from healthy and inoculated sprouts. Total identified phenolic content was 40.02 ± 0.03 mg kg⁻¹, 99.4% of which was isoflavones. CONCLUSION The monitoring suggested that de novo induced glycitein appeared to act as a phytoalexin in the defence mechanism of the soybean sprouts against C. gloeosporioides, and constitutively formed seven phenolic components that functioned as phytoanticipins in the diseased soybean sprouts.
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Affiliation(s)
- Jung Han Lee
- Department of Chemistry and Research Institute of Life Science, Gyeongsang National University, Jinju 660-701, Republic of Korea
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24
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Yan ZH, Han ZZ, Hu XQ, Liu QX, Zhang WD, Liu RH, Li HL. Chemical constituents of Euonymus alatus. Chem Nat Compd 2013. [DOI: 10.1007/s10600-013-0598-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Großkinsky DK, van der Graaff E, Roitsch T. Phytoalexin transgenics in crop protection--fairy tale with a happy end? PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2012; 195:54-70. [PMID: 22920999 DOI: 10.1016/j.plantsci.2012.06.008] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2012] [Revised: 06/14/2012] [Accepted: 06/14/2012] [Indexed: 05/19/2023]
Abstract
Phytoalexins are pathogen induced low molecular weight compounds with antimicrobial activities derived from secondary metabolism. Following their identification, phytoalexins were directly incorporated into the network of plant defense responses. Due to their heterogeneity, the metabolic pathways involved in phytoalexin formation and in particular the regulatory mechanisms remained elusive. Consequently, research focus shifted to the characterization of other components of plant immunity such as defense signaling and resistance mechanisms, including components of systemic acquired and induced systemic resistance, effector and pathogen-associated molecular pattern triggered immunity as well as R-gene resistance. Despite the obtained knowledge on these immunity mechanisms, genetic engineering employing these mechanisms and classical breeding reached too low improvements in crop protection, probably because classical breeding focused on yield performance and taste, rather than pathogen resistance. The increasing demand for disease resistant crop species and the aim to reduce pesticide application therefore requires alternative approaches. Recent advances in the understanding of phytoalexin function, biosynthesis and regulation, in combination with novel methods of molecular engineering and advances in instrumental analysis, returned attention to phytoalexins as a potent target for improving crop protection. Based on this, the advantages as well as potential bottlenecks for molecular approaches of modulating inducible phytoalexins to improve crop protection are discussed.
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Affiliation(s)
- Dominik K Großkinsky
- Institute of Plant Sciences, Department of Plant Physiology, University of Graz, Schubertstraße 51, 8010 Graz, Austria.
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Cho EJ, Shin JS, Chung KS, Lee YS, Cho YW, Baek NI, Chung HG, Lee KT. Arvelexin inhibits colonic inflammation by suppression of NF-κB activation in dextran sulfate sodium-induced mice and TNF-α-induced colonic epithelial cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:7398-7407. [PMID: 22794033 DOI: 10.1021/jf3009553] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Recently, we reported the anti-inflammatory effects of arvelexin isolated from Brassica rapa in macrophages. In the present study, the effects of arvelexin were investigated in a dextran sulfate sodium (DSS)-induced colitis mouse model and in a cellular model. In the DSS-induced colitis model, arvelexin significantly reduced the severity of colitis, as assessed by disease activity, colonic damage, neutrophil infiltration, and levels of colonic iNOS. Moreover, arvelexin inhibited the expressions of IL-8, IP-10, ICAM-1, and VCAM-1 in HT-29 colonic epithelial cells. Arvelexin also inhibited the TNF-α-induced adhesion of U937 monocytic cells to HT-29 cells. Furthermore, arvelexin reduced p65 NF-κB subunit translocation to the nucleus and IκBα degradation in the colonic tissues and in TNF-α-induced HT-29 cells. These results demonstrate that the ameliorative effects of arvelexin on colonic injury are mainly related to its ability to inhibit the inflammatory responses via NF-κB inactivation, and support its possible therapeutic role in colitis.
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Affiliation(s)
- Eu-Jin Cho
- Department of Pharmaceutical Biochemistry, College of Pharmacy, and ⊥Department of Life and Nanopharmaceutical Science, College of Pharmacy, Kyung Hee University , Seoul, Korea
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27
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Montaut S, Grandbois J, Rossi LS, Kamal S, Khouri J, Ménard MG, Joly HA. Composition of Dithyrea wislizenii fruit extract and free-radical scavenging activity of its constituents. CAN J CHEM 2012. [DOI: 10.1139/v2012-042] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Glucolesquerellin (2), glucohesperin (3), quercetin 3-O-sophoroside (4), and quercetin 3-O-sophoroside-7-O-glucoside (5), isolated from the fruit of Dithyrea wislizenii , were quantified by HPLC. The fruit extract and flavonoids were not found to be toxic by using a brine shrimp lethality assay. The fruit extract and the flavonoids and glucosinolates were submitted to a free-radical scavenging activity assay with the diphenylpicrylhydrazyl radical (DPPH•). The concentration of quercetin (6) (a positive control for the flavonoids) able to scavenge 50% of DPPH• (SC50) was 32 ± 2 µmol/L (or 4 ± 1 µg/mL), which was about 27 times more potent than the crude extract. Compounds 4 and 5 had a SC50, the concentration of the compound required to scavenge 50% of the DPPH•, of 78 ± 1 µmol/L and 113 ± 10 µmol/L, respectively. The positive control for the glucosinolates, glucoraphasatin, (1) had a SC50 of 1768 ± 60 µmol/L. The glucosinolates 2 and 3 had a SC50 of 7819 ± 1968 and 970 ± 63 µmol/L, respectively.
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Affiliation(s)
- Sabine Montaut
- Department of Chemistry and Biochemistry, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON P3E 2C6, Canada
| | - Julie Grandbois
- Department of Chemistry and Biochemistry, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON P3E 2C6, Canada
| | - Laura S. Rossi
- Department of Chemistry and Biochemistry, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON P3E 2C6, Canada
| | - Sonia Kamal
- Department of Chemistry and Biochemistry, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON P3E 2C6, Canada
| | - James Khouri
- Department of Chemistry and Biochemistry, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON P3E 2C6, Canada
| | - Melissa G. Ménard
- Department of Chemistry and Biochemistry, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON P3E 2C6, Canada
| | - Hélène A. Joly
- Department of Chemistry and Biochemistry, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON P3E 2C6, Canada
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Shin JS, Noh YS, Lee YS, Cho YW, Baek NI, Choi MS, Jeong TS, Kang E, Chung HG, Lee KT. Arvelexin from Brassica rapa suppresses NF-κB-regulated pro-inflammatory gene expression by inhibiting activation of IκB kinase. Br J Pharmacol 2012; 164:145-58. [PMID: 21434881 DOI: 10.1111/j.1476-5381.2011.01351.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
BACKGROUND AND PURPOSE Brassica rapa species constitute one of the major sources of food. In the present study, we investigated the anti-inflammatory effects and the underlying molecular mechanism of arvelexin, isolated from B. rapa, on lipopolysaccharide (LPS)-stimulated RAW264.7 macrophages and on a model of septic shock induced by LPS. EXPERIMENTAL APPROACH The expression of Inducible nitric oxide synthase (iNOS) and COX-2, TNF-α, IL-6 and IL-1β were determined by Western blot and/or RT-PCR respectively. To elucidate the underlying mechanism(s), activation of NF-κB activation and its pathways were investigated by electrophoretic mobility shift assay, reporter gene and Western blot assays. In addition, the in vivo anti-inflammatory effects of arvelexin were evaluated in endotoxaemia induced with LPS. KEY RESULTS Promoter assays for iNOS and COX-2 revealed that arvelexin inhibited LPS-induced NO and prostaglandin E(2) production through the suppression of iNOS and COX-2 at the level of gene transcription. In addition, arvelexin inhibited NF-κB-dependent inflammatory responses by modulating a series of intracellular events of IκB kinase (IKK)-inhibitor κBα (IκBα)-NF-κB signalling. Moreover, arvelexin inhibited IKKβ-elicited NF-κB activation as well as iNOS and COX-2 expression. Serum levels of NO and inflammatory cytokines and mortality in mice challenged injected with LPS were significantly reduced by arvelexin. CONCLUSION AND IMPLICATIONS Arvelexin down-regulated inflammatory iNOS, COX-2, TNF-α, IL-6 and IL-1β gene expression in macrophages interfering with the activation of IKKβ and p38 mitogen-activated protein kinase, and thus, preventing NF-κB activation.
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Affiliation(s)
- Ji-Sun Shin
- Department of Pharmaceutical Biochemistry, College of Pharmacy, Kyung Hee University, Seoul, Korea
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Ahuja I, Kissen R, Bones AM. Phytoalexins in defense against pathogens. TRENDS IN PLANT SCIENCE 2012; 17:73-90. [PMID: 22209038 DOI: 10.1016/j.tplants.2011.11.002] [Citation(s) in RCA: 556] [Impact Index Per Article: 46.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Revised: 11/04/2011] [Accepted: 11/14/2011] [Indexed: 05/18/2023]
Abstract
Plants use an intricate defense system against pests and pathogens, including the production of low molecular mass secondary metabolites with antimicrobial activity, which are synthesized de novo after stress and are collectively known as phytoalexins. In this review, we focus on the biosynthesis and regulation of camalexin, and its role in plant defense. In addition, we detail some of the phytoalexins produced by a range of crop plants from Brassicaceae, Fabaceae, Solanaceae, Vitaceae and Poaceae. This includes the very recently identified kauralexins and zealexins produced by maize, and the biosynthesis and regulation of phytoalexins produced by rice. Molecular approaches are helping to unravel some of the mechanisms and reveal the complexity of these bioactive compounds, including phytoalexin action and metabolism.
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Affiliation(s)
- Ishita Ahuja
- Department of Biology, Norwegian University of Science and Technology, Realfagbygget, NO-7491 Trondheim, Norway.
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Determination of polyphenol levels variation in Capsicum annuum L. cv. Chelsea (yellow bell pepper) infected by anthracnose (Colletotrichum gloeosporioides) using liquid chromatography–tandem mass spectrometry. Food Chem 2012. [DOI: 10.1016/j.foodchem.2011.08.026] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Pedras MSC, Hossain S. Interaction of cruciferous phytoanticipins with plant fungal pathogens: indole glucosinolates are not metabolized but the corresponding desulfo-derivatives and nitriles are. PHYTOCHEMISTRY 2011; 72:2308-16. [PMID: 21920565 DOI: 10.1016/j.phytochem.2011.08.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2011] [Revised: 07/21/2011] [Accepted: 08/16/2011] [Indexed: 05/10/2023]
Abstract
Glucosinolates represent a large group of plant natural products long known for diverse and fascinating physiological functions and activities. Despite the relevance and huge interest on the roles of indole glucosinolates in plant defense, little is known about their direct interaction with microbial plant pathogens. Toward this end, the metabolism of indolyl glucosinolates, their corresponding desulfo-derivatives, and derived metabolites, by three fungal species pathogenic on crucifers was investigated. While glucobrassicin, 1-methoxyglucobrassicin, 4-methoxyglucobrassicin were not metabolized by the pathogenic fungi Alternaria brassicicola, Rhizoctonia solani and Sclerotinia sclerotiorum, the corresponding desulfo-derivatives were metabolized to indolyl-3-acetonitrile, caulilexin C (1-methoxyindolyl-3-acetonitrile) and arvelexin (4-methoxyindolyl-3-acetonitrile) by R. solani and S. sclerotiorum, but not by A. brassicicola. That is, desulfo-glucosinolates were metabolized by two non-host-selective pathogens, but not by a host-selective. Indolyl-3-acetonitrile, caulilexin C and arvelexin were metabolized to the corresponding indole-3-carboxylic acids. Indolyl-3-acetonitriles displayed higher inhibitory activity than indole desulfo-glucosinolates. Indolyl-3-methanol displayed antifungal activity and was metabolized by A. brassicicola and R. solani to the less antifungal compounds indole-3-carboxaldehyde and indole-3-carboxylic acid. Diindolyl-3-methane was strongly antifungal and stable in fungal cultures, but ascorbigen was not stable in solution and displayed low antifungal activity; neither compound appeared to be metabolized by any of the three fungal species. The cell-free extracts of mycelia of A. brassicicola displayed low myrosinase activity using glucobrassicin as substrate, but myrosinase activity was not detectable in mycelia of either R. solani or S. sclerotiorum.
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Großkinsky DK, Naseem M, Abdelmohsen UR, Plickert N, Engelke T, Griebel T, Zeier J, Novák O, Strnad M, Pfeifhofer H, van der Graaff E, Simon U, Roitsch T. Cytokinins mediate resistance against Pseudomonas syringae in tobacco through increased antimicrobial phytoalexin synthesis independent of salicylic acid signaling. PLANT PHYSIOLOGY 2011; 157:815-30. [PMID: 21813654 PMCID: PMC3192561 DOI: 10.1104/pp.111.182931] [Citation(s) in RCA: 111] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2011] [Accepted: 08/01/2011] [Indexed: 05/18/2023]
Abstract
Cytokinins are phytohormones that are involved in various regulatory processes throughout plant development, but they are also produced by pathogens and known to modulate plant immunity. A novel transgenic approach enabling autoregulated cytokinin synthesis in response to pathogen infection showed that cytokinins mediate enhanced resistance against the virulent hemibiotrophic pathogen Pseudomonas syringae pv tabaci. This was confirmed by two additional independent transgenic approaches to increase endogenous cytokinin production and by exogenous supply of adenine- and phenylurea-derived cytokinins. The cytokinin-mediated resistance strongly correlated with an increased level of bactericidal activities and up-regulated synthesis of the two major antimicrobial phytoalexins in tobacco (Nicotiana tabacum), scopoletin and capsidiol. The key role of these phytoalexins in the underlying mechanism was functionally proven by the finding that scopoletin and capsidiol substitute in planta for the cytokinin signal: phytoalexin pretreatment increased resistance against P. syringae. In contrast to a cytokinin defense mechanism in Arabidopsis (Arabidopsis thaliana) based on salicylic acid-dependent transcriptional control, the cytokinin-mediated resistance in tobacco is essentially independent from salicylic acid and differs in pathogen specificity. It is also independent of jasmonate levels, reactive oxygen species, and high sugar resistance. The novel function of cytokinins in the primary defense response of solanaceous plant species is rather mediated through a high phytoalexin-pathogen ratio in the early phase of infection, which efficiently restricts pathogen growth. The implications of this mechanism for the coevolution of host plants and cytokinin-producing pathogens and the practical application in agriculture are discussed.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | - Thomas Roitsch
- Institute for Plant Sciences, Department of Plant Physiology, University of Graz, 8010 Graz, Austria (D.K.G., H.P., E.v.d.G., U.S., T.R.); Department of Pharmaceutical Biology, University of Würzburg, 97082 Wuerzburg, Germany (M.N., U.R.A., N.P., T.E.); Department of Biology, University of Düsseldorf, 40225 Duesseldorf, Germany (T.G., J.Z.); Laboratory of Growth Regulators, Faculty of Science, Palacký University and Institute of Experimental Botany, 78371 Olomouc, Czech Republic (O.N., M.S.)
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Li X, Qin JC, Wang QY, Wu X, Lang CY, Pan HY, Gruber MY, Gao MJ. Metabolic engineering of isoflavone genistein in Brassica napus with soybean isoflavone synthase. PLANT CELL REPORTS 2011; 30:1435-42. [PMID: 21409550 DOI: 10.1007/s00299-011-1052-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2010] [Revised: 02/11/2011] [Accepted: 03/02/2011] [Indexed: 05/20/2023]
Abstract
Genistein, 4',5,7-trihydroxyisoflavone, is an isoflavonoid compound predominantly restricted to legumes and known to possess phyto-oestrogenic and antioxidative activities. The key enzyme that redirects phenylpropanoid pathway intermediates from flavonoids to isoflavonoids is the isoflavone synthase (IFS). Brassica napus is a non-legume oilseed crop with vegetative tissues producing phenylpropanoids and flavonoids, but does not naturally accumulate isoflavones due to the absence of IFS. To demonstrate whether exogenous IFS is able to use endogenous substrate to produce isoflavone genistein in oilseed crop, the soybean IFS gene (GmIFS2) was incorporated into B. napus plants. The presence of GmIFS2 in B. napus was shown to direct the synthesis and accumulation of genistein derivatives in leaves up to 0.72 mg g(-1) DW. In addition, expression levels for most B. napus genes in the phenylpropanoid pathway were altered. These results suggest that the heterologous GmIFS2 enzyme is functionally active at using the B. napus naringenin as a substrate to produce genistein in oilseed rape.
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Affiliation(s)
- Xiang Li
- College of Plant Sciences, Jilin University, Changchun, 130062, China
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Li X, Westcott N, Links M, Gruber MY. Seed coat phenolics and the developing silique transcriptome of Brassica carinata. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:10918-10928. [PMID: 20925379 DOI: 10.1021/jf102208a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Structures for nine compounds were elucidated in seed coats of two genetically related Brassica carinata lines. The yellow-seeded line accumulated monomeric kaempferols, phenylpropanoids, and lignans, while extractable and unextractable proanthocyanidins and a high-performance liquid chromatography peak containing polymeric-like quercetin/lignan structures were strongly reduced. The brown-seeded line accumulated large amounts of both types of proanthocyanidins (extractable and unextractable), as well as phenylpropanoids and lignans equivalent to the amounts in the yellow-seeded seed coats, but the brown-seeded seed coats lacked kaempferols. A Brassica napus 15K oligoarray experiment indicated that yellow-seeded siliques had more extreme gene expression changes and a 2.4-fold higher number of upregulated genes than brown-seeded siliques, including a host of transcription factors and genes with unknown function. Transcripts for six flavonoid genes (CHS, F3H, FOMT, DFR, GST, and TTG1) were lower and two (F3'H and FLS) were higher in yellow-seeded siliques, but expression of CHI, PAP1, and phenylpropanoid genes was unchanged.
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Affiliation(s)
- Xiang Li
- Agriculture and Agri-Food Canada, Saskatoon Research Centre, 107 Science Place, Saskatoon, Saskatchewan, S7N 0X2, Canada
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35
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Pedras MSC, Yaya EE. Phytoalexins from Brassicaceae: news from the front. PHYTOCHEMISTRY 2010; 71:1191-1197. [PMID: 20416910 DOI: 10.1016/j.phytochem.2010.03.020] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2010] [Revised: 03/24/2010] [Accepted: 03/30/2010] [Indexed: 05/27/2023]
Abstract
The chemical structures, syntheses, metabolism and biological activities of the cruciferous phytoalexins discovered to date, with particular focus on the latest results dealing with their biosynthesis and detoxification are reviewed.
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Affiliation(s)
- M Soledade C Pedras
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK, Canada S7N 5C9.
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Pedras MSC, Zheng QA. Metabolic responses of Thellungiella halophila/salsuginea to biotic and abiotic stresses: metabolite profiles and quantitative analyses. PHYTOCHEMISTRY 2010; 71:581-9. [PMID: 20122704 DOI: 10.1016/j.phytochem.2009.12.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2009] [Revised: 12/09/2009] [Accepted: 12/15/2009] [Indexed: 05/08/2023]
Abstract
The metabolite profiles of the model crucifer Thellungiella salsuginea (salt cress) ecotype Shandong subjected to various biotic and abiotic stresses were analyzed using HPLC-DAD-ESI-MS. Two different cruciferous microbial pathogens, Albugo candida, a biotrophic oomycete, and Leptosphaeria maculans, a necrotrophic fungus, elicited formation of the phytoalexins wasalexins A and B without causing visual damage on inoculated leaves. Analyses of non-polar and polar metabolites led to elucidation of the chemical structures of five metabolites: 4'-O-(E)-sinapoyl-7-methoxyisovitexin-2''-O-beta-D-glucopyranoside, 4'-O-(E)-sinapoylisovitexin-2''-O-beta-D-glucopyranoside, 4-O-beta-D-glucopyranosyl-7-hydroxymatairesinol, 5'-O-beta-D-glucopyranosyldihydroneoascorbigen and 3-O-beta-D-glucopyranosylthiane. 3-O-beta-D-glucopyranosylthiane, an unique metabolite for which we suggest the name glucosalsuginin, is proposed to derive from the glucosinolate glucoberteroin. In addition, the identification of a broad range of polar metabolites identical to those of other crucifers was carried out. Quantification of several metabolites over a period of eight days showed that concentrations of the polar phytoanticipin 4-methoxyglucobrassicin increased substantially in leaves irradiated with UV light (lambda(max) 254 nm) relative to control leaves, but not in leaves subjected to other stresses.
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Li X, Gao MJ, Pan HY, Cui DJ, Gruber MY. Purple canola: Arabidopsis PAP1 increases antioxidants and phenolics in Brassica napus leaves. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:1639-1645. [PMID: 20073469 DOI: 10.1021/jf903527y] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Anthocyanins, other flavonoids, and phenolic acids belong to a group of plant natural products with antioxidant activity and may play important roles in plant protection against biotic and abiotic stress and in protection against human diseases. In the present study, the Arabidopsis regulatory gene Production of Anthocyanin Pigment 1 (AtPAP1) was expressed in Brassica napus (canola), and its presence enhanced the antioxidant capacity in transgenic leaves up to 4-fold. Transgenic plants had intense purple coloration, cyanidin and pelargonidin levels were enhanced 50-fold, and quercetin and sinapic acid were 5-fold higher. Consistent with these phytochemical and biological changes, expression for most genes in the flavonoid and phenolic acid biosynthetic pathways was also stimulated.
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Affiliation(s)
- Xiang Li
- Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, Saskatchewan S7N 0X2, Canada
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Ishikura M, Yamada K, Abe T. Simple indole alkaloids and those with a nonrearranged monoterpenoid unit. Nat Prod Rep 2010; 27:1630-80. [DOI: 10.1039/c005345g] [Citation(s) in RCA: 210] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Abstract
From the methanol extract of the Cardamine diphylla rhizome, methylethyl- (1), 2-methylbutyl- (2), 3-methylpentyl- (4), 3-indolylmethyl- (5), 1-methoxy-3-indolylmethyl- (6), 4-methoxy-3-indolylmethyl- (7) glucosinolates, and desulfo-2-methylbutylglucosinolate (3) were isolated. The structure elucidation of the compounds was performed by spectroscopic methods. The toxicity on brine shrimp larvae of the methanol extract of the C. diphylla rhizome was evaluated. In addition, the free-radical-scavenging activity of the crude extract was carried out by the 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay.
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Affiliation(s)
- Sabine Montaut
- Department of Chemistry and Biochemistry, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON P3E 2C6, Canada
| | - René S. Bleeker
- Department of Chemistry and Biochemistry, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON P3E 2C6, Canada
| | - Carine Jacques
- Department of Chemistry and Biochemistry, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON P3E 2C6, Canada
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Peluffo L, Lia V, Troglia C, Maringolo C, Norma P, Escande A, Esteban Hopp H, Lytovchenko A, Fernie AR, Heinz R, Carrari F. Metabolic profiles of sunflower genotypes with contrasting response to Sclerotinia sclerotiorum infection. PHYTOCHEMISTRY 2010; 71:70-80. [PMID: 19853265 DOI: 10.1016/j.phytochem.2009.09.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2009] [Revised: 07/23/2009] [Accepted: 09/13/2009] [Indexed: 05/08/2023]
Abstract
We report a comprehensive primary metabolite profiling of sunflower (Helianthus annuus) genotypes displaying contrasting behavior to Sclerotinia sclerotiorum infection. Applying a GC-MS-based metabolite profiling approach, we were able to identify differential patterns involving a total of 63 metabolites including major and minor sugars and sugar alcohols, organic acids, amino acids, fatty acids and few soluble secondary metabolites in the sunflower capitulum, the main target organ of pathogen attack. Metabolic changes and disease incidence of the two contrasting genotypes were determined throughout the main infection period (R5.2-R6). Both point-by-point and non-parametric statistical analyses showed metabolic differences between genotypes as well as interaction effects between genotype and time after inoculation. Network correlation analyses suggested that these metabolic changes were synchronized in a time-dependent manner in response to the pathogen. Concerted differential metabolic changes were detected to a higher extent in the susceptible, rather than the resistant genotype, thereby allowing differentiation of modules composed by intermediates of the same pathway which are highly interconnected in the susceptible line but not in the resistant one. Evaluation of these data also demonstrated a genotype specific regulation of distinct metabolic pathways, suggesting the importance of detection of metabolic patterns rather than specific metabolite changes when looking for metabolic markers differentially responding to pathogen infection. In summary, the GC-MS strategy developed in this study was suitable for detection of differences in carbon primary metabolism in sunflower capitulum, a tissue which is the main entry point for this and other pathogens which cause great detrimental impact on crop yield.
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Affiliation(s)
- Lucila Peluffo
- Instituto de Biotecnología, CICVyA, Instituto Nacional de Tecnología Agropecuaria (IB-INTA), Argentina
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Pedras MSC, Zheng QA, Schatte G, Adio AM. Photochemical dimerization of wasalexins in UV-irradiated Thellungiellahalophila and in vitro generates unique cruciferous phytoalexins. PHYTOCHEMISTRY 2009; 70:2010-2016. [PMID: 19818973 DOI: 10.1016/j.phytochem.2009.09.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2009] [Revised: 08/23/2009] [Accepted: 09/08/2009] [Indexed: 05/28/2023]
Abstract
The production of phytoalexins in Thellungiella halophila exposed to UV-radiation and NaCl was investigated over a period of 8 days. UV-radiation induced substantially larger quantities of wasalexins A and B than NaCl irrigation or CuCl(2) spray. Isolation of two metabolites and their chemical structure determination using X-ray diffraction analysis provided the phytoalexins biswasalexins A1 and A2, that resulted from head-to-tail photodimerization of wasalexin A. The production of biswasalexins A1 and A2 in stressed T. halophila, as well as their chemical synthesis and antifungal activity are reported. Biswasalexins A1 and A2 (60 nmol/g and 15 nmol/g fresh wt, respectively, 2 days after UV elicitation) are cruciferous phytoalexins whose formation in planta appears to result from a photochemical reaction, which might protect the plant from fungal attack and UV-radiation.
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Pedras MSC, Zheng QA, Strelkov S. Metabolic changes in roots of the oilseed canola infected with the biotroph Plasmodiophora brassicae: phytoalexins and phytoanticipins. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2008; 56:9949-61. [PMID: 18834132 DOI: 10.1021/jf802192f] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Analyses of metabolite production and accumulation in roots of canola ( Brassica napus L. spp. oleifera) infected with the phytopathogen Plasmodiophora brassicae (clubroot) allowed the identification of 45 metabolites. HPLC analysis corroborated by metabolite isolation and NMR spectroscopic data demonstrated for the first time that phytoalexins and phytoanticipins were produced in roots of canola infected with a soilborne biotroph. In addition, six new indolyl metabolites were identified, synthesized, and tested against three fungal pathogens of canola. Multivariate data analysis using principal component analysis (PCA) revealed distinct metabolic responses of canola to P. brassicae infection during a six-week period. At late harvest days (five and six weeks), a clear clustering was observed among samples of infected roots because of the higher concentration of phytoalexins, while higher concentration of phytoanticipins contributed to the differentiation between three and four weeks samples of infected and control roots. Altogether, the data shows that canola roots under biotrophic attack are able to produce a complex blend of phytoalexins and other antimicrobial metabolites as a defensive response and that the metabolic regulation of phytoanticipins and phytoalexins appeared to correlate with the infection period.
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Affiliation(s)
- M Soledade C Pedras
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK, S7N 5C9, Canada.
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Pedras MSC, Gadagi RS, Zheng QA, Rimmer SR. Selective Elicitation of the Phytoalexin Rutalexin in Rutabaga and Turnip Roots by a Biotrophic Plant Pathogen. Nat Prod Commun 2008. [DOI: 10.1177/1934578x0800300804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Stress responses of roots of rutabaga ( Brassica napus ssp. napobrassica) and turnip ( B. rapa ssp. rapa) were analyzed. Phytoalexin production due to biotic elicitation by the biotroph Albugo candida and abiotic elicitation using UV irradiation was quantified by HPLC. The phytoalexin rutalexin was produced in substantially higher amounts in rutabaga and turnip roots inoculated with A. candida than in UV irradiated roots. By contrast, production of the phytoalexins brassinin in rutabaga and cyclobrassinin in turnip was higher in UV irradiated roots than in roots inoculated with A. candida. Overall, the results suggest that A. candida is able to redirect the phytoalexin biosynthetic pathway towards rutalexin, a phytoalexin substantially less inhibitory than either brassinin or cyclobrassinin.
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Affiliation(s)
- M. Soledade C. Pedras
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK, S7N 5C9, Canada
| | - Ravi S. Gadagi
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK, S7N 5C9, Canada
| | - Qing-An Zheng
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, SK, S7N 5C9, Canada
| | - S. Roger Rimmer
- Saskatoon Research Centre, Agriculture and Agri Food Canada, 107 Science Place, Saskatoon, SK, S7N 0X2, Canada
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Pedras MSC. The chemical ecology of crucifers and their fungal pathogens: Boosting plant defenses and inhibiting pathogen invasion. CHEM REC 2008; 8:109-15. [DOI: 10.1002/tcr.20140] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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