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Wei SS, Lai JY, Chen C, Zhang YJ, Nong XM, Qiu KD, Duan FF, Zou ZX, Tan HB. Sesquiterpenes and α-pyrones from an endophytic fungus Xylaria curta YSJ-5. PHYTOCHEMISTRY 2024; 220:114011. [PMID: 38367793 DOI: 10.1016/j.phytochem.2024.114011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 01/31/2024] [Accepted: 02/01/2024] [Indexed: 02/19/2024]
Abstract
Chemical investigation of the culture extract of an endophyte Xylaria curta YSJ-5 from Alpinia zerumbet (Pers.) Burtt. et Smith resulted in the isolation of eight previously undescribed compounds including five eremophilane sesquiterpenes xylarcurenes A-E, one norsesquiterpene xylarcurene F, and two α-pyrone derivatives xylarpyrones A-B together with eight known related derivatives. Their chemical structures were extensively established based on the 1D- and 2D-NMR spectroscopic analysis, modified Mosher's method, electronic circular dichroism calculations, single-crystal X-ray diffraction experiments, and the comparison with previous literature data. All these compounds were tested for in vitro cytotoxic, anti-inflammatory, α-glucosidase inhibitory, and antibacterial activities. As a result, 6-pentyl-4-methoxy-pyran-2-one was disclosed to display significant antibacterial activity against Staphylococcus aureus and methicillin-resistant S. aureus with minimal inhibitory concentration value of 6.3 μg/mL.
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Affiliation(s)
- Shan-Shan Wei
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jia-Ying Lai
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chen Chen
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Xiangya School of Pharmaceutical Sciences, Central South University, Changsha Hunan 410013, China
| | - Yan-Jiang Zhang
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xin-Miao Nong
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Kai-Di Qiu
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fang-Fang Duan
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Zhen-Xing Zou
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha Hunan 410013, China.
| | - Hai-Bo Tan
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou 341000, China; Xiangya School of Pharmaceutical Sciences, Central South University, Changsha Hunan 410013, China.
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Ma J, Lu C, Tang Y, Shen Y. Phytotoxic Metabolites Isolated from Aspergillus sp., an Endophytic Fungus of Crassula arborescens. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27227710. [PMID: 36431820 PMCID: PMC9699134 DOI: 10.3390/molecules27227710] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 10/31/2022] [Accepted: 11/07/2022] [Indexed: 11/11/2022]
Abstract
Aspergillus sp., an endophytic fungus isolated from Crassula arborescens, displayed potent inhibitory activity against the seed germination of Arabidopsis thaliana. The bioactivity-guided fractionation of the culture extract of Aspergillus sp. MJ01 led to the isolation of nine compounds, including one previously undescribed furanone, namely aspertamarinoic acid (1), and eight known compounds, (-)-dihydrocanadensolide (2), kojic acid (3), citreoisocoumarin (4), astellolide A (5), astellolide B (6), astellolide G (7), cyclo-N-methylphenylalanyltryptophenyl (8) and (-)-ditryptophenaline (9). In the evaluation of the phytotoxic activities of compounds 1-9, the results suggested that 1 and 5 showed significant inhibitory activity on the seed germination of A. thaliana. This is the first report to disclose the phytotoxic activity of these compounds.
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Affiliation(s)
- Jingjing Ma
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan 250012, China
| | - Chunhua Lu
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan 250012, China
| | - Yajie Tang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
| | - Yuemao Shen
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan 250012, China
- Correspondence:
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Phytotoxic compounds from endophytic fungi. Appl Microbiol Biotechnol 2022; 106:931-950. [PMID: 35039926 DOI: 10.1007/s00253-022-11773-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 01/11/2022] [Accepted: 01/11/2022] [Indexed: 12/22/2022]
Abstract
Weeds represent one of the most challenging biotic factors for the agricultural sector, responsible for causing significant losses in important agricultural crops. Traditional herbicides have managed to keep weeds at bay, but overuse has resulted in negative environmental and toxicological impacts, including the increase of herbicide-resistant species. Within this context, the use of biologically derived (bio-)herbicides represents a promising solution because they are able to provide the desired phytotoxic effects while causing less toxic environmental damage. In recent years, bioactive secondary metabolites, in particular those bio-synthesized by endophytic fungi, have been shown to be promising sources of novel compounds that can be exploited in agriculture, including their use in weed control. Endophytic fungi have the ability to produce volatile and nonvolatile compounds with broad phytotoxic activity. In addition, as a result of the beneficial relationships they establish with their host plants, they are part of the colonization mechanism and can provide protection for their hosts. As such, endophytic fungi can be exploited as bioherbicides and as research tools. In this review, we cover 100 nonvolatile secondary metabolites with phytotoxic activity and more than 20 volatile organic compounds in a mixture, produced by 28 isolates of endophytic fungi from 21 host plant families, collected in 8 countries. This information can form the basis for the application of endophytic fungal compounds in weed control. KEY POINTS: • Endophytic fungi produce a wide variety of secondary metabolites with unique and complex structures. • Fungal endophytes produce volatile and nonvolatile compounds with promising phytotoxic activity. • Endophytic fungi are a promising source of useful bioherbicides.
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Berek-Nagy PJ, Tóth G, Bősze S, Horváth LB, Darcsi A, Csíkos S, Knapp DG, Kovács GM, Boldizsár I. The grass root endophytic fungus Flavomyces fulophazii: An abundant source of tetramic acid and chlorinated azaphilone derivatives. PHYTOCHEMISTRY 2021; 190:112851. [PMID: 34217043 DOI: 10.1016/j.phytochem.2021.112851] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 06/17/2021] [Indexed: 06/13/2023]
Abstract
Fungal endophytes are remarkable sources of biologically active metabolites of ecological and pharmacological significance. In this study, fungal isolates producing yellow pigments and originating from grass roots, were identified as the recently described grass root colonizing dark septate endophyte (DSE), Flavomyces fulophazii (Periconiaceae, Pleosporales). While analyzing the metabolite composition of 17 isolates of this fungus, 11 previously undescribed compounds, including four tetramic acids (dihydroxyvermelhotin, hydroxyvermelhotin, methoxyvermelhotin, oxovermelhotin), and seven chlorinated azaphilones (flavochlorines A-G), together with the known tetramic acid vermelhotin, were tentatively identified by high performance liquid chromatography (HPLC)-tandem mass spectrometry (MS/MS). Among them, flavochlorine A, flavochlorine G, hydroxyvermelhotin and vermelhotin could be isolated by preparative HPLC, thus their structures were also confirmed by nuclear magnetic resonance (NMR) spectroscopy. Vermelhotin was found to be the main compound, reaching its maximum level of 5.5 mg/g in the in vitro cultures of a selected F. fulophazii isolate. A significant amount of vermelhotin was isolated by preparative HPLC from these cultures (4.8 mg from 1.0 g lyophilized culture), confirming the practical utility of F. fulophazii in high-yield vermelhotin production. The main compounds of this endophyte expressed no activity in standardized plant bioassays (i.e., in the Lactuca sativa seed germination and Lemna minor growth tests). An antiproliferative study of the isolated compounds confirmed moderate activity of vermelhotin against a panel of twelve cancer cell lines, with IC50 ranges of 10.1-37.0 μM, without inhibiting the non-cancer Vero cells, suggesting its selectivity towards cancers.
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Affiliation(s)
- Péter János Berek-Nagy
- Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University, Pázmány Péter sétány 1/C, Budapest, 1117, Hungary; National Public Health Center, Albert Flórián út 2-6, Budapest, 1097, Hungary
| | - Gergő Tóth
- Department of Pharmaceutical Chemistry, Semmelweis University, Hőgyes Endre u. 9, Budapest, 1092, Hungary
| | - Szilvia Bősze
- National Public Health Center, Albert Flórián út 2-6, Budapest, 1097, Hungary; Research Group of Peptide Chemistry, Eötvös Loránd University, Eötvös Loránd Research Network (ELKH), Pázmány Péter sétány 1/A, Budapest, 1117, Hungary
| | - Lilla Borbála Horváth
- National Public Health Center, Albert Flórián út 2-6, Budapest, 1097, Hungary; Research Group of Peptide Chemistry, Eötvös Loránd University, Eötvös Loránd Research Network (ELKH), Pázmány Péter sétány 1/A, Budapest, 1117, Hungary
| | - András Darcsi
- National Institute of Pharmacy and Nutrition, Zrínyi u. 3, Budapest, 1051, Hungary
| | - Sándor Csíkos
- Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University, Pázmány Péter sétány 1/C, Budapest, 1117, Hungary; National Public Health Center, Albert Flórián út 2-6, Budapest, 1097, Hungary
| | - Dániel G Knapp
- Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University, Pázmány Péter sétány 1/C, Budapest, 1117, Hungary
| | - Gábor M Kovács
- Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University, Pázmány Péter sétány 1/C, Budapest, 1117, Hungary
| | - Imre Boldizsár
- Department of Plant Anatomy, Institute of Biology, Eötvös Loránd University, Pázmány Péter sétány 1/C, Budapest, 1117, Hungary.
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Mitochondrial damage produced by phytotoxic chromenone and chromanone derivatives from endophytic fungus Daldinia eschscholtzii strain GsE13. Appl Microbiol Biotechnol 2021; 105:4225-4239. [PMID: 33970316 DOI: 10.1007/s00253-021-11318-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 04/16/2021] [Accepted: 04/26/2021] [Indexed: 12/20/2022]
Abstract
Bioassay-guided fractionation of the organic extracts of the endophyte Daldinia eschscholtzii strain GsE13 led to the isolation of several phytotoxic compounds, including two chromenone and two chromanone derivatives: 5-hydroxy-8-methoxy-2-methyl-4H-chromen-4-one, 1; 5-hydroxy-2-methyl-4H-chromen-4-one, 2; 5-methoxy-2-methyl-chroman-4-one, 3; and 5-methoxy-2-methyl-chroman-4-ol, 4; as well as other aromatic compounds: 4,8-dihydroxy-1-tetralone, 5; 1,8-dimethoxynaphthalene, 6; and 4,9-dihydroxy-1,2,11,12-tetrahydroperyl-ene-3,10-quinone, 7. Compounds 1, 4, and 7 were isolated for the first time from D. eschscholtzii. The phytotoxicity of all the compounds was determined on germination, root growth, and oxygen uptake in seedlings of a monocotyledonous (Panicum miliaceum) and three dicotyledonous plants (Medicago sativa, Trifolium pratense, and Amaranthus hypochondriacus). In general, root growth was the most affected process in all four weeds, and chromenones 1 and 2 were the most phytotoxic compounds. Phytotoxins 1-4 inhibited basal oxygen consumption rate in isolated mitochondria from M. sativa seedlings and also caused serious damage to their membrane potential (ΔΨm) in percentages greater than 50% at concentrations lower than 2 mM. Based on these results, compounds 1-4 of endophytic origin could be promising for the development of new herbicides potentially useful in agriculture or for the synthesis of promising new molecules. KEY POINTS: • Endophytic fungus Daldinia eschscholtzii produces phytotoxic compounds. • Phytotoxins inhibit basal oxygen consumption rate in isolated M. sativa mitochondria. • Phytotoxins altered the mitochondrial membrane potential.
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Tegha HF, Jouda JB, Dzoyem JP, Sema DK, Leutcha BP, Allémann E, Delie F, Shiono Y, Sewald N, Lannang AM. A New Chromene Derivative and a New Polyalcohol Isolated From the Fungus Xylaria sp. 111A Associated With Garcinia polyantha Leaves. Nat Prod Commun 2021. [DOI: 10.1177/1934578x20987334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
From the crude extract of the plant-associated fungus Xylaria sp. collected in Cameroon, a new 2 H-chromene derivative, hexacycloxylariolone (1), and a new polyalcohol, xylatriol (2), were isolated, in addition to 3 known compounds, 2,3-furandiol (3), 1,8-dimethoxynaphthalene (4), and 1-palmitoyl-rac-glycerol (5). Their chemical structures were established on the basis of the interpretation of spectroscopic data. Hexacycloxylariolone (1), 1,8-dimethoxynaphthalene (4), and 1-palmitoyl-rac-glycerol (5) showed antiproliferative activity by inhibiting the growth of Raw 264.7 and THP-1 cancer cell lines.
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Affiliation(s)
- Hycienth Fung Tegha
- Department of Chemistry, Faculty of Science, University of Maroua, Cameroon
- Department of Chemistry, Higher Teachers’ Training College, University of Maroua, Cameroon
| | - Jean-Bosco Jouda
- Department of Chemical Engineering, School of Chemical Engineering and Mineral Industries, Ngaoundere, Cameroon
| | - Jean Paul Dzoyem
- Department of Biochemistry, Faculty of Science, University of Dschang, Cameroon
- School of Pharmaceutical Sciences, University of Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Switzerland
| | - Denis Kehdinga Sema
- Department of Chemistry, Faculty of Science, University of Maroua, Cameroon
- Department of Chemistry, Higher Teachers’ Training College, University of Maroua, Cameroon
| | - Bosco Peron Leutcha
- Department of Chemistry, Faculty of Science, University of Maroua, Cameroon
- Department of Chemistry, Higher Teachers’ Training College, University of Maroua, Cameroon
| | - Eric Allémann
- School of Pharmaceutical Sciences, University of Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Switzerland
| | - Florence Delie
- School of Pharmaceutical Sciences, University of Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Switzerland
| | - Yoshihito Shiono
- Department of Food, Life, and Environmental Science, Faculty of Agriculture, Yamagata University, Tsuruoka, Japan
| | - Norbert Sewald
- Department of Chemistry, Organic and Bioorganic Chemistry, Bielefeld University, Germany
| | - Alain Meli Lannang
- Department of Chemistry, Higher Teachers’ Training College, University of Maroua, Cameroon
- Department of Chemical Engineering, School of Chemical Engineering and Mineral Industries, Ngaoundere, Cameroon
- Department of Chemistry, Organic and Bioorganic Chemistry, Bielefeld University, Germany
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Noppawan S, Mongkolthanaruk W, Suwannasai N, Senawong T, Moontragoon P, Boonmak J, Youngme S, McCloskey S. Chemical constituents and cytotoxic activity from the wood-decaying fungus Xylaria sp. SWUF08-37. Nat Prod Res 2018; 34:464-473. [PMID: 30257108 DOI: 10.1080/14786419.2018.1488709] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
A new cyclic pentapeptide, pentaminolarin (1), and a new cytochalasin, xylochalasin (2), along with thirteen known compounds (3-15) were isolated from the wood-decaying fungus Xylaria sp. SWUF08-37. The absolute configurations of 1 were determined by a combination of Marfey's method and TDDFT ECD calculation and the absolute configurations of 2 were established by TDDFT ECD calculation. Compound 12 showed moderate cytotoxicity against HeLa (IC50 = 19.60 µg/mL), HT29 (IC50 = 17.31 µg/mL), HCT116 (IC50 = 14.28 µg/mL), MCF-7 (IC50 = 15.38 µg/mL), and Vero (IC50 = 24.97 µg/mL) cell lines by MTT assay. Compounds 1 and 2 showed slight cytotoxicity against all tested cancer cell lines.
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Affiliation(s)
- Somchai Noppawan
- Natural Products Research Unit, Department of Chemistry and Centre of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Wiyada Mongkolthanaruk
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Nuttika Suwannasai
- Department of Biology, Faculty of Science, Srinakharinwirot University, Bangkok, Thailand
| | - Thanaset Senawong
- Department of Biochemistry, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Pairot Moontragoon
- Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Jaursup Boonmak
- Materials Chemistry Research Center, Department of Chemistry and Centre of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Sujittra Youngme
- Materials Chemistry Research Center, Department of Chemistry and Centre of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Sirirath McCloskey
- Natural Products Research Unit, Department of Chemistry and Centre of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
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Yin C, Jin L, Sun F, Xu X, Shao M, Zhang Y. Phytotoxic and Antifungal Metabolites from Curvularia crepinii QTYC-1 Isolated from the Gut of Pantala flavescens. Molecules 2018; 23:molecules23040951. [PMID: 29671780 PMCID: PMC6017354 DOI: 10.3390/molecules23040951] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 04/11/2018] [Accepted: 04/13/2018] [Indexed: 01/13/2023] Open
Abstract
Four metabolites (1–4), including a new macrolide, O-demethylated-zeaenol (2), and three known compounds, zeaenol (1), adenosine (3), and ergosta-5,7,22-trien-3b-ol (4) were isolated and purified from Curvularia crepinii QTYC-1, a fungus residing in the gut of Pantala flavescens. The structures of isolated compounds were identified on the basis of extensive spectroscopic analysis and by comparison of the corresponding data with those reported in the literature previously. The new compound 2 showed good phytotoxic activity against Echinochloa crusgalli with an IC50 value of less than 5 µg/mL, which was comparable to that of positive 2,4-dichlorophenoxyacetic acid (2,4-D). Compound 1 exhibited moderate herbicidal activity against E. crusgalli with an IC50 value of 28.8 μg/mL. Furthermore, the new metabolite 2 was found to possess moderate antifungal activity against Valsa mali at the concentration of 100 µg/mL, with the inhibition rate of 50%. These results suggest that the new macrolide 2 and the known compound 1 have potential to be used as biocontrol agents in agriculture.
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Affiliation(s)
- Caiping Yin
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China.
- College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China.
| | - Liping Jin
- College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China.
| | - Feifei Sun
- College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China.
| | - Xiao Xu
- College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China.
| | - Mingwei Shao
- College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China.
| | - Yinglao Zhang
- School of Life Sciences, Anhui Agricultural University, Hefei 230036, China.
- College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China.
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Tchoukoua A, Ota T, Akanuma R, Ju YM, Supratman U, Murayama T, Koseki T, Shiono Y. A phytotoxic bicyclic lactone and other compounds from endophyte Xylaria curta. Nat Prod Res 2017; 31:2113-2118. [PMID: 28067069 DOI: 10.1080/14786419.2016.1277352] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 12/11/2016] [Indexed: 10/20/2022]
Abstract
A new compound, (3aS,6aR)-4,5-dimethyl-3,3a,6,6a-tetrahydro-2H-cyclopenta [b]furan-2-one (2), along with two known metabolites, myrotheciumone A (1) and 4-oxo-4H-pyron-3-acetic acid (3) was isolated from the ethyl acetate extract of fermentation broth of Xylaria curta 92092022. The structures of these compounds were elucidated on the basis of spectroscopic methods (UV, IR, HRESITOFMS, 1D NMR, and 2D NMR). Compounds 1 and 2 showed moderate antibacterial and phytotoxic activities.
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Affiliation(s)
- Abdou Tchoukoua
- a Department of Organic Chemistry , University of Yaounde 1 , Yaounde , Cameroon
| | - Takuma Ota
- b Department of Food, Life, and Environmental Science, Faculty of Agriculture , Yamagata University , Tsuruoka , Japan
| | - Rima Akanuma
- b Department of Food, Life, and Environmental Science, Faculty of Agriculture , Yamagata University , Tsuruoka , Japan
| | - Yu-Ming Ju
- c Institute of Plant and Microbial Biology, Academia Sinica, Nankang , Taipei , Taiwan
| | - Unang Supratman
- d Department of Chemistry, Faculty of Mathematics and Natural Sciences , Universitas Padjadjaran , Sumedang , Indonesia
| | - Tetsuya Murayama
- b Department of Food, Life, and Environmental Science, Faculty of Agriculture , Yamagata University , Tsuruoka , Japan
| | - Takuya Koseki
- b Department of Food, Life, and Environmental Science, Faculty of Agriculture , Yamagata University , Tsuruoka , Japan
| | - Yoshihito Shiono
- b Department of Food, Life, and Environmental Science, Faculty of Agriculture , Yamagata University , Tsuruoka , Japan
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Macías-Rubalcava ML, García-Méndez MC, King-Díaz B, Macías-Ruvalcaba NA. Effect of phytotoxic secondary metabolites and semisynthetic compounds from endophytic fungus Xylaria feejeensis strain SM3e-1b on spinach chloroplast photosynthesis. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 166:35-43. [DOI: 10.1016/j.jphotobiol.2016.11.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Accepted: 11/01/2016] [Indexed: 12/31/2022]
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Macías-Rubalcava ML, Sánchez-Fernández RE. Secondary metabolites of endophytic Xylaria species with potential applications in medicine and agriculture. World J Microbiol Biotechnol 2016; 33:15. [PMID: 27896581 DOI: 10.1007/s11274-016-2174-5] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 11/06/2016] [Indexed: 12/19/2022]
Abstract
Fungal endophytes are important sources of bioactive secondary metabolites. The genus Xylaria Hill (ex Schrank, 1789, Xylariaceae) comprises various endophytic species associated to both vascular and non vascular plants. The secondary metabolites produced by Xylaria species include a variety of volatile and non-volatile compounds. Examples of the former are sesquiterpenoids, esters, and alcohols, among others; and of the latter we find terpenoids, cytochalasins, mellein, alkaloids, polyketides, and aromatic compounds. Some of these metabolites have shown potential activity as herbicides, fungicides, and insecticides; others possess antibacterial, antimalarial, and antifungal activities, or α-glucosidase inhibitory activity. Thus metabolites from Xylaria are promising compounds for applications in agriculture for plague control as biopesticides, and biocontrol agents; and in medicine, for example as drugs for the treatment of infectious and non-infectious diseases. This review seeks to show the great value of the secondary metabolites of Xylaria, particularly in the agriculture and medicine fields.
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Affiliation(s)
- Martha Lydia Macías-Rubalcava
- Instituto de Química, Departamento de Productos Naturales, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, 4510, Delegación Coyoacán, Mexico, Mexico.
| | - Rosa Elvira Sánchez-Fernández
- Instituto de Química, Departamento de Productos Naturales, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, 4510, Delegación Coyoacán, Mexico, Mexico
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