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Ji XY, Wang BY, Zhang YF, Zhang YJ, Lai YJ, Yang Y, Wang XC, Wang SY, Laborda P, Shi XC. Dipicolinic acid reduces Epicoccum sorghinum symptoms on maize and inhibits tenuazonic acid biosynthesis. PEST MANAGEMENT SCIENCE 2024. [PMID: 39189553 DOI: 10.1002/ps.8393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 05/15/2024] [Accepted: 08/15/2024] [Indexed: 08/28/2024]
Abstract
BACKGROUND Epicoccum sorghinum is a pathogenic fungus that causes leaf spot in a wide range of plants, including maize, and synthesizes the mycotoxin tenuazonic acid (TEA), which is carcinogenic. Despite the relevant economic and yield losses caused by E. sorghinum worldwide, methods for the control of this pathogen are lacking. RESULTS In this work, the efficacy of Bacillus-produced dipicolinic acid (DPA) for control of E. sorghinum was evaluated using in vitro and in vivo assays, and compared with the efficacy of three commercial fungicides, including carbendazim, prochloraz, and thiram. DPA inhibited E. sorghinum mycelial growth, and conidia germination, and produced important alterations in E. sorghinum hyphae. Interestingly, 10 mM DPA reduced TEA biosynthesis by 86.6%. Although DPA rapidly degraded on maize leaves, 10 mM DPA showed higher preventive (67.4% lesion length inhibition) and inhibitory (89.5% lesion length inhibition) efficacies for the control of E. sorghinum on maize leaves compared to the commercial fungicides. CONCLUSIONS Collectively, this study presents the first method for the control of E. sorghinum on maize and demonstrates that DPA application is a suitable approach to inhibit E. sorghinum symptoms in plants and TEA biosynthesis. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Xin-Yu Ji
- School of Life Sciences, Nantong University, Nantong, China
| | - Bing-Yi Wang
- School of Life Sciences, Nantong University, Nantong, China
| | - Yi-Feng Zhang
- School of Life Sciences, Nantong University, Nantong, China
| | - Yu-Jing Zhang
- School of Life Sciences, Nantong University, Nantong, China
| | - Ya-Jie Lai
- School of Life Sciences, Nantong University, Nantong, China
| | - Yang Yang
- School of Life Sciences, Nantong University, Nantong, China
| | | | - Su-Yan Wang
- School of Life Sciences, Nantong University, Nantong, China
| | - Pedro Laborda
- School of Life Sciences, Nantong University, Nantong, China
| | - Xin-Chi Shi
- School of Life Sciences, Nantong University, Nantong, China
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Qin Y, Zhou H, Yang Y, Guo T, Zhou Y, Zhang Y, Ma L. Metabolome and Its Mechanism Profiling in the Synergistic Toxic Effects Induced by Co-Exposure of Tenuazonic Acid and Patulin in Caco-2 Cells. Toxins (Basel) 2024; 16:319. [PMID: 39057959 PMCID: PMC11281550 DOI: 10.3390/toxins16070319] [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: 05/30/2024] [Revised: 07/04/2024] [Accepted: 07/12/2024] [Indexed: 07/28/2024] Open
Abstract
Tenuazonic acid (TeA), usually found in cereals, fruits, vegetables, oil crops, and their products, was classified as one of the highest public health problems by EFSA as early as 2011, but it has still not been regulated by legislation due to the limited toxicological profile. Moreover, it has been reported that the coexistence of TeA and patulin (PAT) has been found in certain agricultural products; however, there are no available data about the combined toxicity. Considering that the gastrointestinal tract is the physiological barrier of the body, it would be the first target site at which exogenous substances interact with the body. Thus, we assessed the combined toxicity (cell viability, ROS, CAT, and ATP) in Caco-2 cells using mathematical modeling (Chou-Talalay) and explored mechanisms using non-targeted metabolomics and molecular biology methods. It revealed that the co-exposure of TeA + PAT (12.5 μg/mL + 0.5 μg/mL) can induce enhanced toxic effects and more severe oxidative stress. Mechanistically, the lipid and amino acid metabolisms and PI3K/AKT/FOXO signaling pathways were mainly involved in the TeA + PAT-induced synergistic toxic effects. Our study not only enriches the scientific basis for the development of regulatory policies but also provides potential targets and treatment options for alleviating toxicities.
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Affiliation(s)
- Yuxian Qin
- College of Food Science, Southwest University, Chongqing 400715, China; (Y.Q.); (H.Z.); (Y.Y.); (T.G.); (Y.Z.); (Y.Z.)
| | - Hongyuan Zhou
- College of Food Science, Southwest University, Chongqing 400715, China; (Y.Q.); (H.Z.); (Y.Y.); (T.G.); (Y.Z.); (Y.Z.)
- Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, China
- Key Laboratory of Quality and Safety Control of Citrus Fruits, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400715, China
| | - Yulian Yang
- College of Food Science, Southwest University, Chongqing 400715, China; (Y.Q.); (H.Z.); (Y.Y.); (T.G.); (Y.Z.); (Y.Z.)
| | - Ting Guo
- College of Food Science, Southwest University, Chongqing 400715, China; (Y.Q.); (H.Z.); (Y.Y.); (T.G.); (Y.Z.); (Y.Z.)
- Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, China
- Key Laboratory of Quality and Safety Control of Citrus Fruits, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400715, China
| | - Ying Zhou
- College of Food Science, Southwest University, Chongqing 400715, China; (Y.Q.); (H.Z.); (Y.Y.); (T.G.); (Y.Z.); (Y.Z.)
- Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, China
- Key Laboratory of Quality and Safety Control of Citrus Fruits, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400715, China
| | - Yuhao Zhang
- College of Food Science, Southwest University, Chongqing 400715, China; (Y.Q.); (H.Z.); (Y.Y.); (T.G.); (Y.Z.); (Y.Z.)
- Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, China
- Key Laboratory of Luminescence Analysis and Molecular Sensing, Southwest University, Ministry of Education, Chongqing 400715, China
- Key Laboratory of Condiment Supervision Technology for State Market Regulation, Chongqing 401121, China
| | - Liang Ma
- College of Food Science, Southwest University, Chongqing 400715, China; (Y.Q.); (H.Z.); (Y.Y.); (T.G.); (Y.Z.); (Y.Z.)
- Chongqing Key Laboratory of Speciality Food Co-Built by Sichuan and Chongqing, Chongqing 400715, China
- Key Laboratory of Quality and Safety Control of Citrus Fruits, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400715, China
- Key Laboratory of Condiment Supervision Technology for State Market Regulation, Chongqing 401121, China
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3
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GS A, Mayavathi NR NP, N.R. A, B.M. M, Sherpa DC, C A, Suresh A, Kammar S, M S, S S, B.N. G, Doss S G. Diversity of fungal pathogens in leaf spot disease of Indian mulberry and its management. Heliyon 2023; 9:e21750. [PMID: 38027777 PMCID: PMC10665727 DOI: 10.1016/j.heliyon.2023.e21750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 10/25/2023] [Accepted: 10/26/2023] [Indexed: 12/01/2023] Open
Abstract
Leaf spot disease in mulberry significantly affects silk production by reducing the nutritive quality of the leaves. This disease caused by various pathogens, regardless of the localities under the same climatic region. In the present investigation, an approximate incidence rate of 84 % was recorded in Karnataka based on surveys conducted in both farmer fields and germplasm locations. The causative agents have shown diversification, including new candidates such as Bipolaris sorokiniana, Curvularia lunata, Cladosporium sphaerospermum, and Epicoccum sorghinum. These findings mark the first report of these pathogens in Indian mulberry production. The investigation involved detailed pathogenicity assessments on the predominant mulberry silk production cultivar under controlled and field environments. Pathogens were identified using morpho-cultural, microscopic and phylogenetic analyses, including the internal transcribed spacer (ITS). Various concentrations of fungicides, both individually and in combinations, were evaluated to identify effective measures for mitigating yield losses. Among the fungicides tested against the new pathogens, Hexaconazole 5 % SC and Hexaconazole 5 % + Captan 70 % WP demonstrated high promise and cost-effectiveness. Consequently, these fungicides could serve as immediate solutions to prevent further yield reduction. However, it is essential to conduct comprehensive field investigations before recommending them as standard practices. Future research endeavors should focus on assessing the extent of crop loss caused by these newly identified pathogens in mulberry cultivation.
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Affiliation(s)
- Arunakumar GS
- Mulberry Pathology and Molecular Biology Lab-I, Central Sericultural Research and Training Institute, Manandavadi Road, Srirampura, Mysuru, 570 008, Karnataka, India
| | - Nisarga Pushpa Mayavathi NR
- Mulberry Pathology and Molecular Biology Lab-I, Central Sericultural Research and Training Institute, Manandavadi Road, Srirampura, Mysuru, 570 008, Karnataka, India
| | - Arya N.R.
- Mulberry Pathology and Molecular Biology Lab-I, Central Sericultural Research and Training Institute, Manandavadi Road, Srirampura, Mysuru, 570 008, Karnataka, India
| | - Monika B.M.
- Mulberry Pathology and Molecular Biology Lab-I, Central Sericultural Research and Training Institute, Manandavadi Road, Srirampura, Mysuru, 570 008, Karnataka, India
| | - Dolma Chhuden Sherpa
- Mulberry Pathology and Molecular Biology Lab-I, Central Sericultural Research and Training Institute, Manandavadi Road, Srirampura, Mysuru, 570 008, Karnataka, India
| | - Anupama C
- Mulberry Pathology and Molecular Biology Lab-I, Central Sericultural Research and Training Institute, Manandavadi Road, Srirampura, Mysuru, 570 008, Karnataka, India
| | - Akhil Suresh
- Mulberry Pathology and Molecular Biology Lab-I, Central Sericultural Research and Training Institute, Manandavadi Road, Srirampura, Mysuru, 570 008, Karnataka, India
| | - Supriya Kammar
- Mulberry Pathology and Molecular Biology Lab-I, Central Sericultural Research and Training Institute, Manandavadi Road, Srirampura, Mysuru, 570 008, Karnataka, India
| | - Supriya M
- Mulberry Pathology and Molecular Biology Lab-I, Central Sericultural Research and Training Institute, Manandavadi Road, Srirampura, Mysuru, 570 008, Karnataka, India
| | - Sruthi S
- Mulberry Pathology and Molecular Biology Lab-I, Central Sericultural Research and Training Institute, Manandavadi Road, Srirampura, Mysuru, 570 008, Karnataka, India
| | - Gnanesh B.N.
- Sampoorna International Institute of Agri Science & Horticultural Technology, Maddur, 571 433, Karnataka, India
| | - Gandhi Doss S
- Mulberry Pathology and Molecular Biology Lab-I, Central Sericultural Research and Training Institute, Manandavadi Road, Srirampura, Mysuru, 570 008, Karnataka, India
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4
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Jiang M, Wang M, Lai W, Song X, Li J, Liu D, Wei Z, Hong C. Construction of electrochemical and electrochemiluminescent dual-mode aptamer sensors based on ferrocene dual-functional signal probes for the sensitive detection of Alternariol. Anal Chim Acta 2023; 1272:341476. [PMID: 37355320 DOI: 10.1016/j.aca.2023.341476] [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: 04/21/2023] [Revised: 06/02/2023] [Accepted: 06/02/2023] [Indexed: 06/26/2023]
Abstract
In this study, a novel dual-mode aptamer sensor was developed using Fca-DNA2 as the quenching electrochemiluminescence (ECL) and electrochemical (EC) signal response probe, and Ru-MOF/Cu@Au NPs were used as the ECL substrate platform to detect Alternariol (AOH) via a competitive reaction between AOH and Fca-DNA2. Compared with the conventional aptamer sensor with a single detection signal, this dual-mode aptamer sensor has the following advantages: (1) Electrodeposition-based rapid synthesis Ru-MOF on the electrode surface. (2) The Signal amplification substance Cu@Au NPs can synergistically catalyze Triethanolamine (TEOA) to amplify ECL behavior. (3) The aptamer sensor employs the dual-functional material Fca, which can detect both ECL and EC signals, increasing the result accuracy. Both ECL and EC methods have excellent detection performance for AOH in the detection range of 0.1 pg/mL to 100 ng/mL, with detection limits of 0.014 and 0.083 pg/mL, respectively, and are expected to be used for sensitive AOH detection in real samples.
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Affiliation(s)
- Mingzhe Jiang
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi, 832003, PR China
| | - Min Wang
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi, 832003, PR China
| | - Wenjing Lai
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi, 832003, PR China
| | - Xuetong Song
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi, 832003, PR China
| | - Jiajia Li
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi, 832003, PR China
| | - Dan Liu
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi, 832003, PR China
| | - Zhong Wei
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi, 832003, PR China.
| | - Chenglin Hong
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi, 832003, PR China.
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5
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Huang C, Huang H, Xia Z, Yang Y, Jiang X, Yang Y, Wang D, Li X, Chen Z. Sequence Data, Functional Annotation, and Relationship Analysis Between mRNAs and Long Noncoding RNAs from Tea Leaves During Infection by the Fungal Pathogen Epicoccum sorghinum. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2022; 35:875-879. [PMID: 36107196 DOI: 10.1094/mpmi-02-22-0048-a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Affiliation(s)
- Chen Huang
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, Guizhou 550025, China
| | - Hongke Huang
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, Guizhou 550025, China
- College of Tea Science, Guizhou University, Guiyang, Guizhou 550025, China
| | - Zhongqiu Xia
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, Guizhou 550025, China
- College of Tea Science, Guizhou University, Guiyang, Guizhou 550025, China
| | - Yuqin Yang
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, Guizhou 550025, China
- College of Tea Science, Guizhou University, Guiyang, Guizhou 550025, China
| | - Xinyue Jiang
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, Guizhou 550025, China
| | - Yuanyou Yang
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, Guizhou 550025, China
| | - Delu Wang
- College of Forestry, Guizhou University, Guiyang, Guizhou 550025, China
| | - Xiangyang Li
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, Guizhou 550025, China
| | - Zhuo Chen
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, Guizhou 550025, China
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6
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Zhou H, Pan S, Tan H, Yang Y, Guo T, Zhang Y, Ma L. A novel high-sensitive indirect competitive chemiluminescence enzyme immunoassay based on monoclonal antibody for tenuazonic acid (TeA) detection. Eur Food Res Technol 2022. [DOI: 10.1007/s00217-021-03905-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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7
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Chang CC, Li CY, Tsai YH, El-Shazly M, Wei CK, Yang ZJ, Chen SL, Wu CC, Wu YC, Chang FR. Bioactive polyketides from the pathogenic fungus of Epicoccum sorghinum. PLANTA 2021; 253:116. [PMID: 33956231 DOI: 10.1007/s00425-021-03635-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Accepted: 04/24/2021] [Indexed: 06/12/2023]
Abstract
We discovered and identified a series of characteristic substances, including one new polyketide, epicorepoxydon B, of the important pathogenic fungus, Epicoccum sorghinum, of sorghum. The fungal extract and some isolated polyketides are sensitive to a malignant triple-negative breast cancer cell line, MDA-MB-231. Sorghum (Kaoliang) grain is an important crop with high economic value and several applications. In Taiwan, sorghum has been used in the wine industry, and "Kinmen Kaoliang Liquor" is a well-known Asian brand. Fungal contamination is one of the major threats affecting the production of sorghum grain resulting in economic losses as well as human and animal health problems. Several fungal species can infect sorghum grain and generate some toxic secondary metabolites. Epicoccum sorghinum is one of the major fungal contaminants of sorghum grains and a potent producer of mycotoxins such as tenuazonic acid (TeA). However, except for TeA, few studies focused on chemical compounds produced by this fungus. To explore the potential biological and toxic effects of E. sorghinum, a chemical investigation was carried out on the ethyl acetate extract of the fungus because it showed cytotoxic activity against a triple-negative breast cancer cell line, MDA-MB-231 (54.82% inhibition at 20 µg/mL). One new polyketide, epicorepoxydon B (1), along with six known compounds including 4,5-dihydroxy-6-(6'-methylsalicyloxy)-2-hydroxymethyl-2-cyclohexenl-one (2), epicorepoxydon A (3), 3-hydroxybenzyl alcohol (4), 6-methylsalicylic acid (5), gentisyl alcohol (6), and 6-(hydroxymethyl)benzene-1,2,4-triol (7) were obtained, and their structures were established by the interpretation of their MS and NMR spectroscopic data. The cytotoxic activity of all isolated polyketides 1-7 was evaluated, and compounds 2, 6, and 7 exhibited potent activities against A549, HepG2, and MDA-MB-231 human cancer cell lines with IC50 value ranging from 1.86 to 18.31 μM. The structure-activity relationship of the isolated compounds was proposed.
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Affiliation(s)
- Ching-Chia Chang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Chi-Ying Li
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, 1985 Zonal Avenue, Los Angeles, CA, 90089, USA
| | - Yi-Hong Tsai
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Mohamed El-Shazly
- Department of Pharmacognosy, Faculty of Pharmacy, Ain-Shams University, Organization of African Unity Street, Abassia, 11566, Cairo, Egypt
- Department of Pharmaceutical Biology, Faculty of Pharmacy and Biotechnology, The German University in Cairo, Cairo, 11835, Egypt
| | - Chien-Kei Wei
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Zih-Jie Yang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Shu-Li Chen
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Yang-Chang Wu
- Graduate Institute of Integrated Medicine, China Medical University, Taichung, 404, Taiwan
- Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung, 404, Taiwan
| | - Fang-Rong Chang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.
- Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, 804, Taiwan.
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8
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Li CY, Chang CC, Tsai YH, El-Shazly M, Wu CC, Wang SW, Hwang TL, Wei CK, Hohmann J, Yang ZJ, Cheng YB, Wu YC, Chang FR. Anti-inflammatory, Antiplatelet Aggregation, and Antiangiogenesis Polyketides from Epicoccum sorghinum: Toward an Understating of Its Biological Activities and Potential Applications. ACS OMEGA 2020; 5:11092-11099. [PMID: 32455230 PMCID: PMC7241018 DOI: 10.1021/acsomega.0c01000] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 04/24/2020] [Indexed: 05/28/2023]
Abstract
The ethyl acetate extract of an endophyte Epicoccum sorghinum exhibited anti-inflammatory activity at a concentration of <10 μg/mL. By bioassay-guided fractionation, one new compound, named epicorepoxydon A (1), and one unusual bioactive compound, 6-(hydroxymethyl)benzene-1,2,4-triol (6), together with six known compounds, were isolated from E. sorghinum. The structures of all isolates were established by spectroscopic analyses. The relative configuration of 1 was deduced by the NOESY spectrum and its absolute configuration was determined by X-ray single-crystal analysis. The biological activities of all isolates were evaluated using four types of bioassays including cytotoxicity, anti-inflammatory, antiplatelet aggregation, and antiangiogenesis activities. Compounds 4 and 6 showed potent anti-inflammatory activity, compound 2 possessed potent antiplatelet aggregation and antiangiogenesis activities, and compound 6 demonstrated antiangiogenesis activity. This fungal species can cause a human hemorrhagic disorder known as onyalai. In this study, we identified the active components with antiplatelet aggregation and antiangiogenesis activities, which may be related to the hemorrhagic disorder caused by this fungus. Moreover, we proposed a biosynthetic pathway of the isolated polyketide secondary metabolites and investigated their structure-activity relationship (SAR). Our results suggested that E. sorghinum is a potent source of biologically active compounds that can be developed as antiplatelet aggregation and anti-inflammatory agents.
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Affiliation(s)
- Chi-Ying Li
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Ching-Chia Chang
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Yi-Hong Tsai
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Mohamed El-Shazly
- Department
of Pharmacognosy, Faculty of Pharmacy, Ain-Shams
University, Organization of African Unity Street, Abassia, Cairo 11566, Egypt
- Department
of Pharmaceutical Biology, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo 11835, Egypt
| | - Chin-Chung Wu
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Shih-Wei Wang
- Department
of Medicine, Mackay Medical College, New Taipei City 252, Taiwan
| | - Tsong-Long Hwang
- Graduate
Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Research
Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic
Safety, and Graduate Institute of Health Industry Technology, College
of Human Ecology, Chang Gung University
of Science and Technology, Taoyuan 333, Taiwan
- Department
of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Chien-Kei Wei
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Judit Hohmann
- Department
of Pharmacognosy, Interdisciplinary Excellence Center, University of Szeged, H-6720 Szeged, Hungary
- Interdisciplinary
Centre for Natural Products, University
of Szeged, H-6720 Szeged, Hungary
| | - Zih-Jie Yang
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Yuan-Bin Cheng
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Yang-Chang Wu
- Graduate
Institute of Integrated Medicine, China
Medical University, Taichung 404, Taiwan
- Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung 404, Taiwan
| | - Fang-Rong Chang
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Medical Research, Kaohsiung
Medical University Hospital, Kaohsiung Medical
University, Kaohsiung 807, Taiwan
- Department
of Marine Biotechnology and Resources, National
Sun Yat-sen University, Kaohsiung 804, Taiwan
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9
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Five Fungal Pathogens Are Responsible for Bayberry Twig Blight and Fungicides Were Screened for Disease Control. Microorganisms 2020; 8:microorganisms8050689. [PMID: 32397322 PMCID: PMC7284972 DOI: 10.3390/microorganisms8050689] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 04/27/2020] [Accepted: 05/06/2020] [Indexed: 11/17/2022] Open
Abstract
Bayberry (Myrica rubra) is a commercial fruit in China. For the past seven years, twig blight disease has been attacking bayberry plantations in Shantou City, Guangdong Province, China, leading to destructive damage and financial loss. In this study, five fungal species associated with twig dieback and stem blight were identified based on morphological characteristics combined with multilocus sequence analysis (MLSA) on the internal transcribed spacer (ITS) region, partial sequences of β-tubulin (tub2), translation elongation factor 1-α (tef1-α), large subunit ribosomal RNA (LSU) and small subunit ribosomal RNA (SSU) genes, which are Epicoccum sorghinum, Neofusicoccum parvum, Lasiodiplodia theobromae, Nigrospora oryzae and a Pestalotiopsis new species P. myricae. P. myricae is the chief pathogen in fields, based on its high isolation rate and fast disease progression after inoculation. To our knowledge, this is the first study reporting the above five fungi as the pathogens responsible for bayberry twig blight. Indoor screening of fungicides indicates that Prochloraz (copper salt) is the most promising fungicide for field application, followed by Pyraclostrobin, 15% Difenoconazole + 15% Propiconazole, Difenoconazole and Myclobutanil. Additionally, Bacillus velezensis strain 3–10 and zeamines from Dickeya zeae strain EC1 could be used as potential ecofriendly alternatives to control the disease.
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Oliveira RC, Goncalves SS, Silva CDC, Dilkin P, Madrid H, Correa B. Polyphasic characterization of Epicoccum sorghinum: A tenuazonic acid producer isolated from sorghum grain. Int J Food Microbiol 2018; 292:1-7. [PMID: 30553177 DOI: 10.1016/j.ijfoodmicro.2018.12.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 12/03/2018] [Accepted: 12/06/2018] [Indexed: 10/27/2022]
Abstract
Epicoccum sorghinum isolates from sorghum grain grown in Brazil were characterized using a polyphasic approach based on morphological, genetic and physiologic features. A considerable intraspecific variability was observed. The phylogenetic analysis showed that the 53 isolates studied formed four distinct clades, and their morphological features revealed a high variability in culture. The four clades could not be distinguished clearly by morphology or enzyme production patterns. The tenuazonic acid (TeA) production capability of 11 isolates was also determined and revealed a good agreement with the phylogeny results. All of the 11 isolates were revealed as TeA producers, indicating a potential toxicological risk to sorghum crops. This is the first study to provide a detailed morphological description of E. sorghinum isolates from sorghum grains in Brazil and it clearly confirms the wide genetic and phenotypic variability previously reported for this species in other countries.
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Affiliation(s)
- Rodrigo Cardoso Oliveira
- Laboratory of Mycotoxins and Toxigenic Fungi, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil.
| | - Sarah Santos Goncalves
- Center for Research in Medical Mycology, Department of Pathology, Federal University of Espirito Santo, Vitoria, Brazil
| | | | - Paulo Dilkin
- Laboratory of Micotoxicological Analysis, Federal University of Santa Maria, Santa Maria, Brazil
| | - Hugo Madrid
- Centro de Genómica y Bioinformática, Facultad de Ciencias, Universidad Mayor, Santiago, Chile
| | - Benedito Correa
- Laboratory of Mycotoxins and Toxigenic Fungi, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Brazil
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