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Zhu Z, Yang C, Keyhani NO, Liu S, Pu H, Jia P, Wu D, Stevenson PC, Fernández-Grandon GM, Pan J, Chen Y, Guan X, Qiu J. Characterization of Terpenoids from the Ambrosia Beetle Symbiont and Laurel Wilt Pathogen Harringtonia lauricola. J Fungi (Basel) 2023; 9:1175. [PMID: 38132776 PMCID: PMC10744799 DOI: 10.3390/jof9121175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/02/2023] [Accepted: 12/05/2023] [Indexed: 12/23/2023] Open
Abstract
Little is known concerning terpenoids produced by members of the fungal order Ophiostomales, with the member Harringtonia lauricola having the unique lifestyle of being a beetle symbiont but potentially devastating tree pathogen. Nine known terpenoids, including six labdane diterpenoids (1-6) and three hopane triterpenes (7-9), were isolated from H. lauricola ethyl acetate (EtOAc) extracts for the first time. All compounds were tested for various in vitro bioactivities. Six compounds, 2, 4, 5, 6, 7, and 9, are described functionally. Compounds 2, 4, 5, and 9 expressed potent antiproliferative activity against the MCF-7, HepG2 and A549 cancer cell lines, with half-maximal inhibitory concentrations (IC50s) ~12.54-26.06 μM. Antimicrobial activity bioassays revealed that compounds 4, 5, and 9 exhibited substantial effects against Gram-negative bacteria (Escherichia coli and Ralstonia solanacearum) with minimum inhibitory concentration (MIC) values between 3.13 and 12.50 μg/mL. Little activity was seen towards Gram-positive bacteria for any of the compounds, whereas compounds 2, 4, 7, and 9 expressed antifungal activities (Fusarium oxysporum) with MIC values ranging from 6.25 to 25.00 μg/mL. Compounds 4, 5, and 9 also displayed free radical scavenging abilities towards 2,2-diphenyl-1-picrylhydrazyl (DPPH) and superoxide (O2-), with IC50 values of compounds 2, 4, and 6 ~3.45-14.04 μg/mL and 22.87-53.31 μg/mL towards DPPH and O2-, respectively. These data provide an insight into the biopharmaceutical potential of terpenoids from this group of fungal insect symbionts and plant pathogens.
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Affiliation(s)
- Zhiqiang Zhu
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (Z.Z.); (C.Y.); (S.L.); (H.P.); (Y.C.)
| | - Chenjie Yang
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (Z.Z.); (C.Y.); (S.L.); (H.P.); (Y.C.)
| | - Nemat O. Keyhani
- Department of Biological Sciences, University of Illinois, Chicago, IL 60607, USA;
| | - Sen Liu
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (Z.Z.); (C.Y.); (S.L.); (H.P.); (Y.C.)
| | - Huili Pu
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (Z.Z.); (C.Y.); (S.L.); (H.P.); (Y.C.)
| | - Peisong Jia
- Institute of Plant Protection, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China;
| | - Dongmei Wu
- Biotechnology Research Institute, Xinjiang Academy of Agricultural and Reclamation Sciences, Shihezi 832061, China;
| | - Philip C. Stevenson
- Natural Resources Institute, University of Greenwich, Chatham Maritime, Kent ME4 4TB, UK; (P.C.S.); (G.M.F.-G.)
| | | | - Jieming Pan
- College of Biology & Pharmacy, Yulin Normal University, Yulin 537000, China;
| | - Yuxi Chen
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (Z.Z.); (C.Y.); (S.L.); (H.P.); (Y.C.)
| | - Xiayu Guan
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Junzhi Qiu
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (Z.Z.); (C.Y.); (S.L.); (H.P.); (Y.C.)
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Abu Ghazal T, Veres K, Vidács L, Szemerédi N, Spengler G, Berkecz R, Hohmann J. Furanonaphthoquinones, Diterpenes, and Flavonoids from Sweet Marjoram and Investigation of Antimicrobial, Bacterial Efflux, and Biofilm Formation Inhibitory Activities. ACS OMEGA 2023; 8:34816-34825. [PMID: 37780020 PMCID: PMC10536869 DOI: 10.1021/acsomega.3c03982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 09/01/2023] [Indexed: 10/03/2023]
Abstract
The chloroform extract of Origanum majorana exhibited high antibacterial and antifungal activities against 12 bacterial and 4 fungal strains; therefore, it was subjected to bioassay-guided isolation to afford six compounds (1-6). The structures were determined via one- and two-dimensional nuclear magnetic spectroscopy and high-resolution electrospray ionization mass spectrometry experiments. The compounds were identified as furanonaphthoquinones [majoranaquinone (1), 2,3-dimethylnaphtho[2,3-b]furan-4,9-dione (2)], diterpenes [19-hydroxyabieta-8,11,13-trien-7-one (3), 13,14-seco-13-oxo-19-hydroxyabieta-8-en-14-al (4)], and flavonoids [sterubin (5) and majoranin (6)]. Compounds 1 and 2 were first obtained from a natural source and compounds 3 and 4 were previously undescribed. Majoranaquinone (1) exhibited a high antibacterial effect against 4 Staphylococcus, 1 Moraxella, and 1 Enterococcus strains (MIC values between 7.8 μM and 1 mM). In the efflux pump inhibition assay, majoranaquinone (1) showed substantial activity in Escherichia coli ATCC 25922 strain. Furthermore, 1 was found to be an effective biofilm formation inhibitor on E. coli ATCC 25922 and E. coli K-12 AG100 bacteria. Our findings proved that bioactivities of majoranaquinone (1) significantly exceed those of the essential oil constituents; therefore, it should also be considered when assessing the antimicrobial effects of O. majorana.
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Affiliation(s)
| | - Katalin Veres
- Institute
of Pharmacognosy, University of Szeged, Szeged H-6720, Hungary
| | - Lívia Vidács
- Institute
of Pharmacognosy, University of Szeged, Szeged H-6720, Hungary
| | - Nikoletta Szemerédi
- Department
of Medical Microbiology, Albert Szent-Györgyi Health Center
and Albert Szent-Györgyi Medical School, University of Szeged, Szeged H-6720, Hungary
| | - Gabriella Spengler
- Department
of Medical Microbiology, Albert Szent-Györgyi Health Center
and Albert Szent-Györgyi Medical School, University of Szeged, Szeged H-6720, Hungary
| | - Róbert Berkecz
- Institute
of Pharmaceutical Analysis, University of
Szeged, 6720 Szeged, Hungary
| | - Judit Hohmann
- Institute
of Pharmacognosy, University of Szeged, Szeged H-6720, Hungary
- Interdisciplinary
Centre for Natural Products, University
of Szeged, Szeged H-6720, Hungary
- ELKH-USZ
Biologically Active Natural Products Research Group, University of Szeged, Szeged H-6720, Hungary
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