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Takahashi R, Isshiki SN, Hakozaki M, Kanno Y, Uesugi S, Koseki T, Shiono Y. Altenuene derivatives produced by an endophyte Alternaria alternata. Nat Prod Res 2024:1-8. [PMID: 38646834 DOI: 10.1080/14786419.2024.2342557] [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: 10/11/2023] [Accepted: 04/06/2024] [Indexed: 04/23/2024]
Abstract
Two novel aromatic polyketides 1 and 3 and five known compounds, (4S,10S)-talaroflavone (2), altenuene (4), isoaltenuene (5), alternariol (6), and altenusin (7), were isolated from an endophytic strain of Alternaria alternata SI-694. The structures of the new compounds, including their absolute configurations, were elucidated by NMR, IR, UV, and ECD spectroscopies, and the phytotoxicities of the isolated compounds were also evaluated. Altenusin (7) showed moderate cytotoxicity against HL-60 cells, with an IC50 of 6.65 µM, whereas 5, 6, and 7 were phytotoxic against Lactuca sativa, Brassica campestris L., Stellaria aquatica (L.) Scop. and Digitaria ciliaris.
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Affiliation(s)
- Reo Takahashi
- Department of Food, Life, and Environmental Science, Faculty of Agriculture, Yamagata University, Tsuruoka, Japan
| | - Shin-Nosuke Isshiki
- Department of Food, Life, and Environmental Science, Faculty of Agriculture, Yamagata University, Tsuruoka, Japan
| | | | - Yuko Kanno
- Iwate Biotechnology Research Center, Kitakami, Japan
| | - Shota Uesugi
- Iwate Biotechnology Research Center, Kitakami, Japan
| | - Takuya Koseki
- Department of Food, Life, and Environmental Science, Faculty of Agriculture, Yamagata University, Tsuruoka, Japan
| | - Yoshihito Shiono
- Department of Food, Life, and Environmental Science, Faculty of Agriculture, Yamagata University, Tsuruoka, Japan
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Delgado Gómez LM, Torres-Mendoza D, Hernández-Torres K, Ortega HE, Cubilla-Rios L. Identification of Secondary Metabolites from the Mangrove-Endophyte Lasiodiplodia iranensis F0619 by UPLC-ESI-MS/MS. Metabolites 2023; 13:912. [PMID: 37623856 PMCID: PMC10456654 DOI: 10.3390/metabo13080912] [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: 06/25/2023] [Revised: 07/08/2023] [Accepted: 07/11/2023] [Indexed: 08/26/2023] Open
Abstract
Lasiodiplodia is a widely distributed fungal genus, frequently found in tropical and subtropical regions where it can cause disease in important crops. It represents a promising source of active secondary metabolites with uses in chemical, pharmaceutical, and agrochemical processes. In this study, the strain Lasiodiplodia iranensis F0619 was isolated from the mangrove Avicennia ger-minans, collected from Sarigua National Park in the Republic of Panama. Fractions of crude extract were analyzed by UPLC-ESI-MS/MS, and five compounds, previously reported from Lasiodiplodia genus were identified, including 11,12-didehydro-7-iso-jasmonic acid (1), 4,5-didehydro-7-iso-jasmonic acid (2), cyclo-(L-Leu-L-Pro) (3), jasmonate-threonine (4), and abscisic acid (5). We describe and analyze their MS/MS fragmentation patterns to confirm the compounds 'chemical structures.
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Affiliation(s)
- Lizbeth M. Delgado Gómez
- Laboratorio de Bioorgánica Tropical, Facultad de Ciencias Naturales, Exactas y Tecnología, Universidad de Panamá, Panamá 0824, Panama; (L.M.D.G.); (D.T.-M.); (K.H.-T.); (H.E.O.)
| | - Daniel Torres-Mendoza
- Laboratorio de Bioorgánica Tropical, Facultad de Ciencias Naturales, Exactas y Tecnología, Universidad de Panamá, Panamá 0824, Panama; (L.M.D.G.); (D.T.-M.); (K.H.-T.); (H.E.O.)
- Departamento de Química Orgánica, Facultad de Ciencias Naturales, Exactas y Tecnología, Universidad de Panamá, Panamá 0824, Panama
- Vicerrectoría de Investigación y Postgrado, Universidad de Panamá, Panamá 0824, Panama
| | - Kathleen Hernández-Torres
- Laboratorio de Bioorgánica Tropical, Facultad de Ciencias Naturales, Exactas y Tecnología, Universidad de Panamá, Panamá 0824, Panama; (L.M.D.G.); (D.T.-M.); (K.H.-T.); (H.E.O.)
- Programa de Maestría en Microbiología Ambiental, Vicerrectoría de Investigación y Postgrado, Universidad de Panamá, Panamá 0824, Panama
| | - Humberto E. Ortega
- Laboratorio de Bioorgánica Tropical, Facultad de Ciencias Naturales, Exactas y Tecnología, Universidad de Panamá, Panamá 0824, Panama; (L.M.D.G.); (D.T.-M.); (K.H.-T.); (H.E.O.)
- Departamento de Química Orgánica, Facultad de Ciencias Naturales, Exactas y Tecnología, Universidad de Panamá, Panamá 0824, Panama
| | - Luis Cubilla-Rios
- Laboratorio de Bioorgánica Tropical, Facultad de Ciencias Naturales, Exactas y Tecnología, Universidad de Panamá, Panamá 0824, Panama; (L.M.D.G.); (D.T.-M.); (K.H.-T.); (H.E.O.)
- Departamento de Química Orgánica, Facultad de Ciencias Naturales, Exactas y Tecnología, Universidad de Panamá, Panamá 0824, Panama
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Mulyani Y, Sinaga SE, Supratman U. Phytochemistry and Biological Activities of Endophytic Fungi from the Meliaceae Family. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020778. [PMID: 36677833 PMCID: PMC9863112 DOI: 10.3390/molecules28020778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/28/2022] [Accepted: 01/10/2023] [Indexed: 01/15/2023]
Abstract
Meliaceae plants are found worldwide in tropical or subtropical climates. They are important ethnobotanically as sources of traditional medicine, with 575 species and 51 genera. Previous research found that microorganisms are plant pioneers to produce secondary metabolites with diverse compound structures and bioactivities. Several plants of the Meliaceae family contain secondary metabolites isolated from endophytic fungi. Furthermore, related articles from 2002 to 2022 were collected from SciFinder, Google Scholar, and PubMed. About 276 compounds were isolated from endophytic fungi such as terpenoids, polyketides, lactones, pyrones, quinone, anthraquinones, xanthones, coumarines, isocoumarines, resorcylic acid lactones, cytochalasins, aromatics, ester, quinols, alkaloids, nitro compound, fatty acids, and sugars with bioactivities such as antioxidant, antibacterial, antifungal, anti-influenza, neuroprotective activities, anti-HIV, cytotoxic, allelopathic, anti-inflammatory, antifeedant effects, and BSLT toxicity. Meanwhile, secondary metabolites isolated from endophytic fungi were reported as one of the sources of active compounds for medicinal chemistry. This comprehensive review summarizes the ethnobotanical uses and secondary metabolites derived from Meliaceae endophytic fungi.
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Affiliation(s)
- Yeni Mulyani
- Department of Chemistry, Faculty of Mathematic and Natural Sciences, Universitas Padjadjaran, Sumedang 45363, Indonesia
- Department of Marine Science, Faculty of Fisheries and Marine Science, Universitas Padjadjaran, Sumedang 45363, Indonesia
| | | | - Unang Supratman
- Department of Chemistry, Faculty of Mathematic and Natural Sciences, Universitas Padjadjaran, Sumedang 45363, Indonesia
- Central Laboratory, Universitas Padjadjaran, Sumedang 45363, Indonesia
- Correspondence: ; Tel.: +62-22-779-4391
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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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Xu D, Xue M, Shen Z, Jia X, Hou X, Lai D, Zhou L. Phytotoxic Secondary Metabolites from Fungi. Toxins (Basel) 2021; 13:261. [PMID: 33917534 PMCID: PMC8067579 DOI: 10.3390/toxins13040261] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 04/02/2021] [Accepted: 04/03/2021] [Indexed: 02/06/2023] Open
Abstract
Fungal phytotoxic secondary metabolites are poisonous substances to plants produced by fungi through naturally occurring biochemical reactions. These metabolites exhibit a high level of diversity in their properties, such as structures, phytotoxic activities, and modes of toxicity. They are mainly isolated from phytopathogenic fungal species in the genera of Alternaria, Botrytis, Colletotrichum, Fusarium, Helminthosporium, and Phoma. Phytotoxins are either host specific or non-host specific phytotoxins. Up to now, at least 545 fungal phytotoxic secondary metabolites, including 207 polyketides, 46 phenols and phenolic acids, 135 terpenoids, 146 nitrogen-containing metabolites, and 11 others, have been reported. Among them, aromatic polyketides and sesquiterpenoids are the main phytotoxic compounds. This review summarizes their chemical structures, sources, and phytotoxic activities. We also discuss their phytotoxic mechanisms and structure-activity relationships to lay the foundation for the future development and application of these promising metabolites as herbicides.
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Affiliation(s)
| | | | | | | | | | | | - Ligang Zhou
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China; (D.X.); (M.X.); (Z.S.); (X.J.); (X.H.); (D.L.)
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