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Tsakem B, Tchamgoue J, Kinge RT, Tiani GLM, Teponno RB, Kouam SF. Diversity of African fungi, chemical constituents and biological activities. Fitoterapia 2024; 178:106154. [PMID: 39089594 DOI: 10.1016/j.fitote.2024.106154] [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: 06/10/2024] [Revised: 07/25/2024] [Accepted: 07/28/2024] [Indexed: 08/04/2024]
Abstract
Besides plants and animals, the fungal kingdom consists of several species characterized by various forms and applications. Fungi are amazing producers of bioactive natural products with applications in medicine and agriculture. Though this kingdom has been extensively investigated worldwide, it remains relatively underexplored in Africa. To address the knowledge gaps, encourage research interest, and suggest opportunities for the discovery of more bioactive substances from African fungi, we considered it appropriate to extensively review the research work carried out on African fungi since 1988. This review summarizes the diversity and distribution of fungi throughout Africa, the secondary metabolites yet reported from studied fungi, their biological activities and, the countries where they were collected. The studied fungi originated from eleven African countries and were mainly endophytic fungi and higher fungi (macrofungi). Their investigation led to the isolation of five hundred and three (503) compounds with polyketides representing the main class of secondary metabolites. The compounds exhibited varied biological activities with antibacterial and antiproliferative properties being the most prominent.
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Affiliation(s)
- Bienvenu Tsakem
- Department of Chemistry, Higher Teacher Training College, University of Yaoundé I, P.O. Box 47, Yaoundé, Cameroon; Department of Chemistry, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon
| | - Joseph Tchamgoue
- Department of Chemistry, Higher Teacher Training College, University of Yaoundé I, P.O. Box 47, Yaoundé, Cameroon; Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon.
| | - Rosemary Tonjock Kinge
- Department of Plant Sciences, Faculty of Science, The University of Bamenda, P.O. Box 39, Bambili, Cameroon
| | - Gesqiere Laure M Tiani
- Department of Chemistry, Higher Teacher Training College, University of Yaoundé I, P.O. Box 47, Yaoundé, Cameroon; Department of Fundamental Science, University Institute for Wood Technology Mbalmayo, P.O. Box 306, Mbalmayo, Cameroon
| | - Rémy Bertrand Teponno
- Department of Chemistry, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon
| | - Simeon F Kouam
- Department of Chemistry, Higher Teacher Training College, University of Yaoundé I, P.O. Box 47, Yaoundé, Cameroon.
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2
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Peng J, Wang X, Wang H, Li X, Zhang Q, Wang M, Yan J. Advances in understanding grapevine downy mildew: From pathogen infection to disease management. MOLECULAR PLANT PATHOLOGY 2024; 25:e13401. [PMID: 37991155 PMCID: PMC10788597 DOI: 10.1111/mpp.13401] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Accepted: 09/29/2023] [Indexed: 11/23/2023]
Abstract
Plasmopara viticola is geographically widespread in grapevine-growing regions. Grapevine downy mildew disease, caused by this biotrophic pathogen, leads to considerable yield losses in viticulture annually. Because of the great significance of grapevine production and wine quality, research on this disease has been widely performed since its emergence in the 19th century. Here, we review and discuss recent understanding of this pathogen from multiple aspects, including its infection cycle, disease symptoms, genome decoding, effector biology, and management and control strategies. We highlight the identification and characterization of effector proteins with their biological roles in host-pathogen interaction, with a focus on sustainable control methods against P. viticola, especially the use of biocontrol agents and environmentally friendly compounds.
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Affiliation(s)
- Junbo Peng
- Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North ChinaInstitute of Plant Protection, Beijing Academy of Agriculture and Forestry SciencesBeijingChina
| | - Xuncheng Wang
- Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North ChinaInstitute of Plant Protection, Beijing Academy of Agriculture and Forestry SciencesBeijingChina
| | - Hui Wang
- Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North ChinaInstitute of Plant Protection, Beijing Academy of Agriculture and Forestry SciencesBeijingChina
| | - Xinghong Li
- Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North ChinaInstitute of Plant Protection, Beijing Academy of Agriculture and Forestry SciencesBeijingChina
| | - Qi Zhang
- Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North ChinaInstitute of Plant Protection, Beijing Academy of Agriculture and Forestry SciencesBeijingChina
| | - Meng Wang
- Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North ChinaInstitute of Plant Protection, Beijing Academy of Agriculture and Forestry SciencesBeijingChina
| | - Jiye Yan
- Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North ChinaInstitute of Plant Protection, Beijing Academy of Agriculture and Forestry SciencesBeijingChina
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3
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Mo S, Zhao Z, Ye Z, Huang Z, Zhang Y, Yang W, Wang J, Hu Z, Zhang Y. New secondary metabolites with cytotoxicity from fungus Penicillium roqueforti. NATURAL PRODUCTS AND BIOPROSPECTING 2023; 13:17. [PMID: 37261606 DOI: 10.1007/s13659-023-00381-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 05/20/2023] [Indexed: 06/02/2023]
Abstract
Two novel compounds including a cyclohelminthol type polyketide (namely oxaleimide K, 1) and a maleimide derivative (namely peniroquefortine A, 2), and a new natural product (namely 2-(acetylamino)-N-[(1E)-2-phenylethenyl]-acetamide, 3), together with four known compounds (4-7), were isolated and identified from fungus Penicillium roqueforti, which was separated from the root soil of Hypericum beanii N. Robson collected from the Shennongjia Forestry District, Hubei Province. Their structures including absolute configurations were mainly established by the NMR spectroscopy analyses and single-crystal X-ray diffraction experiment. Compound 1 represents the second example of a cyclohelminthol type polyketide, which features a rare 6/6/5/5 tetracyclic system and a branched aliphatic chain containing a terminal olefin (oct-1-en-3-yl) moiety, and compound 2 possesses an unprecedented carbon skeleton that is uniquely defined by a maleimide moiety linked to the respective 4-methylene-2-(3-methylbut-2-en-1-yl)-phenol and para-substituted aromatic moieties via the carbon-carbon bonds. Remarkably, the absolute configuration of a cyclohelminthol type polyketide as exemplified by compound 1 is determined by the single-crystal diffraction analysis for the first time, highlighting an E-configuration for the linkage of a succinimide moiety and a tetrahydrofuran moiety for 1 rather than a Z-configuration as previously reported in the biosynthesis study, which gives a new insight into the structural elucidation of this category of polyketides. Additionally, compound 1 exhibited significant cytotoxic activity against multiple tumor cells, especially against the Farage and SU-DHL-2 cells (IC50 < 20 µM, 48 h). Further mechanism study revealed that compound 1 significantly induced cell cycle arrest in Farage and SU-DHL-2 cells by causing abnormal ROS level and triggering oxidative stress.
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Affiliation(s)
- Shuyuan Mo
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Ziming Zhao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Zi Ye
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Zhihong Huang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Yaxin Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Wanqi Yang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Jianping Wang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Zhengxi Hu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Yonghui Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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4
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Harunari E, Doyo H, Phongsopitanun W, Tanasupawat S, Sutthacheep M, Yeemin T, Igarashi Y. 1-(6-Methylsalicyloyl)glycerol from stony coral-derived Micromonospora sp. J Antibiot (Tokyo) 2023; 76:83-87. [PMID: 36446953 DOI: 10.1038/s41429-022-00578-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/28/2022] [Accepted: 10/14/2022] [Indexed: 12/05/2022]
Abstract
A new natural product, 1-(6-methylsalicyloyl)glycerol (1) was isolated from the culture extract of the stony coral-derived Micromonospora sp. C029. The structure of 1 was determined by extensive analysis of 1D and 2D NMR spectroscopic data. The absolute configuration was determined to be S by comparison of specific rotation with synthetic (R)- and (S)-1. Compound 1 showed weak antimicrobial activity against Kocuria rizhophila. Structurally related benzoyl glycerol is not reported from actinomycetes, suggesting that isolation of actinomycetes from little studied environments should be important for the discovery of novel natural products.
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Affiliation(s)
- Enjuro Harunari
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama, 939-0398, Japan
| | - Haruka Doyo
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama, 939-0398, Japan
| | - Wongsakorn Phongsopitanun
- Department of Biochemistry and Microbiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Somboon Tanasupawat
- Department of Biochemistry and Microbiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Makamas Sutthacheep
- Department of Biology, Faculty of Science, Ramkhamhaeng University, Bangkok, 10240, Thailand
| | - Thamasak Yeemin
- Department of Biology, Faculty of Science, Ramkhamhaeng University, Bangkok, 10240, Thailand
| | - Yasuhiro Igarashi
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama, 939-0398, Japan.
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5
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Gribble GW. Naturally Occurring Organohalogen Compounds-A Comprehensive Review. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2023; 121:1-546. [PMID: 37488466 DOI: 10.1007/978-3-031-26629-4_1] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
The present volume is the third in a trilogy that documents naturally occurring organohalogen compounds, bringing the total number-from fewer than 25 in 1968-to approximately 8000 compounds to date. Nearly all of these natural products contain chlorine or bromine, with a few containing iodine and, fewer still, fluorine. Produced by ubiquitous marine (algae, sponges, corals, bryozoa, nudibranchs, fungi, bacteria) and terrestrial organisms (plants, fungi, bacteria, insects, higher animals) and universal abiotic processes (volcanos, forest fires, geothermal events), organohalogens pervade the global ecosystem. Newly identified extraterrestrial sources are also documented. In addition to chemical structures, biological activity, biohalogenation, biodegradation, natural function, and future outlook are presented.
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Affiliation(s)
- Gordon W Gribble
- Department of Chemistry, Dartmouth College, Hanover, NH, 03755, USA.
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6
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Five new aromatic polyketides and isoquinoline alkaloids from the deep-sea-derived fungus Aspergillus puniceus SCSIO z021. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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7
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Toure S, Millot M, Ory L, Roullier C, Khaldi Z, Pichon V, Girardot M, Imbert C, Mambu L. Access to Anti-Biofilm Compounds from Endolichenic Fungi Using a Bioguided Networking Screening. J Fungi (Basel) 2022; 8:jof8101012. [PMID: 36294577 PMCID: PMC9604612 DOI: 10.3390/jof8101012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/19/2022] [Accepted: 09/20/2022] [Indexed: 11/16/2022] Open
Abstract
Endolichenic microorganisms represent a new source of bioactive natural compounds. Lichens, resulting from a symbiotic association between algae or cyanobacteria and fungi, constitute an original ecological niche for these microorganisms. Endolichenic fungi inhabiting inside the lichen thallus have been isolated and characterized. By cultivation on three different culture media, endolichenic fungi gave rise to a wide diversity of bioactive metabolites. A total of 38 extracts were screened for their anti-maturation effect on Candida albicans biofilms. The 10 most active ones, inducing at least 50% inhibition, were tested against 24 h preformed biofilms of C. albicans, using a reference strain and clinical isolates. The global molecular network was associated to bioactivity data in order to identify and priorize active natural product families. The MS-targeted isolation led to the identification of new oxygenated fatty acid in Preussia persica endowed with an interesting anti-biofilm activity against C. albicans yeasts.
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Affiliation(s)
- Seinde Toure
- Laboratoire PEIRENE, University Limoges, UR 22722, F-87000 Limoges, France
| | - Marion Millot
- Laboratoire PEIRENE, University Limoges, UR 22722, F-87000 Limoges, France
| | - Lucie Ory
- Institut des Substances et Organismes de la Mer (ISOMer), Nantes Université, UR 2160, F-44000 Nantes, France
| | - Catherine Roullier
- Institut des Substances et Organismes de la Mer (ISOMer), Nantes Université, UR 2160, F-44000 Nantes, France
| | - Zineb Khaldi
- Laboratoire PEIRENE, University Limoges, UR 22722, F-87000 Limoges, France
| | - Valentin Pichon
- Laboratoire PEIRENE, University Limoges, UR 22722, F-87000 Limoges, France
| | - Marion Girardot
- Laboratoire Ecologie et Biologie des Interactions (EBI), University Poitiers, UMR CNRS 7267, F-86000 Poitiers, France
| | - Christine Imbert
- Laboratoire Ecologie et Biologie des Interactions (EBI), University Poitiers, UMR CNRS 7267, F-86000 Poitiers, France
| | - Lengo Mambu
- Laboratoire PEIRENE, University Limoges, UR 22722, F-87000 Limoges, France
- Correspondence: ; Tel.: +33-5-55-43-58-34
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8
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Anti-Pseudomonas aeruginosa activity of a C 16-terpene dilactone isolated from the endophytic fungus Neofusicoccum luteum of Kigelia africana (Lam.). Sci Rep 2022; 12:780. [PMID: 35039545 PMCID: PMC8763916 DOI: 10.1038/s41598-021-04747-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 12/29/2021] [Indexed: 11/08/2022] Open
Abstract
Fungal endophytes have the capacity to biosynthesize secondary metabolites that are produced by their host plants. In this study, a dilactone terpenoid of C16 architecture was isolated from the fungal endophytes of Kigeliaafricana, in our attempt to identify anti-Pseudomonasaeruginosa metabolites. Thirty-eight fungal isolates were cultured for biomolecule production over a period of thirty days. Extracts from three (ZF 34, ZF 52 and ZF 91) of the fungi showed good anti-P.aeruginosa activity, with ZF 52 presenting the best MIC of 19.53 µg/mL and was accordingly subjected to chromatographic separation. Based on nuclear magnetic resonance (NMR) spectroscopy, high resolution mass spectrometry and single crystal X-ray diffraction (XRD) analyses, the isolated compound was identified as a C16-terpene dilactone, with a structure consistent with that of the known diterpene, CJ-14445. The isolated dilactone showed anti-P.aeruginosa activity with MIC of 0.61 µg/mL, signifying the antibacterial potential of the biomolecule. The bioactive fungal isolate (ZF 52) was identified as Neofusicoccumluteum based on genomic DNA sequencing. This is the first report of the endophyte N.luteum from K.africana and the first reported occurrence of CJ-14445 in the fungus.
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9
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Phytochemical and chemotaxonomic study on the Lichen Lethariella cladonioides. BIOCHEM SYST ECOL 2021. [DOI: 10.1016/j.bse.2021.104343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Abstract
A new species, Pezicula endophytica, was isolated from roots and stems of two Dendrobium species in northern Thailand. Evidence to support the new species is based on morphology and phylogenetic analysis of the combined ITS, LSU, and RPB2 DNA sequence dataset. Pezicula
endophytica, which constituted a clade independent from other Pezicula species, has 4% distinct base pair differences in all genes. Pezicula endophytica has larger macroconidia and longer conidiophores compared with phylogenetically neighboring species. This is the first
report of an endophytic Pezicula species from Dendrobium in Thailand.
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He ZH, Wu J, Xu L, Hu MY, Xie MM, Hao YJ, Li SJ, Shao ZZ, Yang XW. Chemical Constituents of the Deep-Sea-Derived Penicillium solitum. Mar Drugs 2021; 19:580. [PMID: 34677479 PMCID: PMC8540044 DOI: 10.3390/md19100580] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 10/07/2021] [Accepted: 10/15/2021] [Indexed: 11/16/2022] Open
Abstract
A systematic chemical investigation of the deep-sea-derived fungus Penicillium solitum MCCC 3A00215 resulted in the isolation of one novel polyketide (1), two new alkaloids (2 and 3), and 22 known (4-25) compounds. The structures of the new compounds were established mainly on the basis of exhaustive analysis of 1D and 2D NMR data. Viridicatol (13) displayed moderate anti-tumor activities against PANC-1, Hela, and A549 cells with IC50 values of around 20 μM. Moreover, 13 displayed potent in vitro anti-food allergic activity with an IC50 value of 13 μM, compared to that of 92 μM for the positive control, loratadine, while indole-3-acetic acid methyl ester (9) and penicopeptide A (10) showed moderate effects (IC50 = 50 and 58 μM, respectively).
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Affiliation(s)
- Zhi-Hui He
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Z.-H.H.); (L.X.); (M.-Y.H.); (M.-M.X.); (Y.-J.H.); (S.-J.L.); (Z.-Z.S.)
| | - Jia Wu
- Yanjing Medical College, Capital Medical University, 4 Dadong Road, Beijing 101300, China;
| | - Lin Xu
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Z.-H.H.); (L.X.); (M.-Y.H.); (M.-M.X.); (Y.-J.H.); (S.-J.L.); (Z.-Z.S.)
| | - Man-Yi Hu
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Z.-H.H.); (L.X.); (M.-Y.H.); (M.-M.X.); (Y.-J.H.); (S.-J.L.); (Z.-Z.S.)
| | - Ming-Ming Xie
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Z.-H.H.); (L.X.); (M.-Y.H.); (M.-M.X.); (Y.-J.H.); (S.-J.L.); (Z.-Z.S.)
| | - You-Jia Hao
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Z.-H.H.); (L.X.); (M.-Y.H.); (M.-M.X.); (Y.-J.H.); (S.-J.L.); (Z.-Z.S.)
| | - Shu-Jin Li
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Z.-H.H.); (L.X.); (M.-Y.H.); (M.-M.X.); (Y.-J.H.); (S.-J.L.); (Z.-Z.S.)
| | - Zong-Ze Shao
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Z.-H.H.); (L.X.); (M.-Y.H.); (M.-M.X.); (Y.-J.H.); (S.-J.L.); (Z.-Z.S.)
| | - Xian-Wen Yang
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, 184 Daxue Road, Xiamen 361005, China; (Z.-H.H.); (L.X.); (M.-Y.H.); (M.-M.X.); (Y.-J.H.); (S.-J.L.); (Z.-Z.S.)
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12
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Xu K, Li XQ, Zhao DL, Zhang P. Antifungal Secondary Metabolites Produced by the Fungal Endophytes: Chemical Diversity and Potential Use in the Development of Biopesticides. Front Microbiol 2021; 12:689527. [PMID: 34234763 PMCID: PMC8255633 DOI: 10.3389/fmicb.2021.689527] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 05/10/2021] [Indexed: 11/13/2022] Open
Abstract
Plant diseases caused by phytopathogenic fungi can lead to huge losses in the agricultural fields and therefore remain a continuous threat to the global food security. Chemical-based fungicides contributed significantly in securing crop production. However, indiscriminate application of fungicides has led to increased chemical resistance and potential risks to human health and environment. Thus, there is an urgent need for searching for new bioactive natural products and developing them into new biopesticides. Fungal endophytes, microorganisms that reside in the fresh tissues of living plants, are regarded as untapped sources of novel natural products for exploitation in agriculture and/or medicine. Chemical examination of endophytic fungi has yielded enormous antifungal natural products with potential use in the development of biopesticides. This review summarizes a total of 132 antifungal metabolites isolated from fungal endophytes in the past two decades. The emphasis is on the unique chemical diversity of these metabolic products, together with their relevant antifungal properties. Moreover, some "star molecules," such as griseofulvin and trichothecene, as well as their synthetic derivatives that possess high potential as candidates of new natural fungicides, are also presented herein.
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Affiliation(s)
| | | | - Dong-Lin Zhao
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, China
| | - Peng Zhang
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao, China
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13
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Fungal Endophytes from Orchidaceae: Diversity and Applications. Fungal Biol 2021. [DOI: 10.1007/978-3-030-68260-6_14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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14
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Bang S, Shim SH. Beta resorcylic acid lactones (RALs) from fungi: chemistry, biology, and biosynthesis. Arch Pharm Res 2020; 43:1093-1113. [PMID: 33113097 DOI: 10.1007/s12272-020-01275-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 10/21/2020] [Indexed: 11/29/2022]
Abstract
β-Resorcylic acid lactones (RALs) are one of the major polyketides produced by fungi, and some of them have a diverse array of biological activities. Most RALs feature a 14-membered macrocyclic ring fused to β-resorcylic acid (2,4-dihydroxybenzoic acid). In this review, more than 100 RAL-type of compounds are structurally classified into three groups; 14-membered RALs with 17R configuration, 14-membered RALs with 17S configuration, and benzopyranones/benzofuranones, and they are reviewed comprehensively in terms of chemistry, biological activities, and biosynthetic pathways.
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Affiliation(s)
- Sunghee Bang
- College of Pharmacy, Duksung Women's University, Seoul, 01369, Republic of Korea
| | - Sang Hee Shim
- College of Pharmacy, Duksung Women's University, Seoul, 01369, Republic of Korea.
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15
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Shui F, Jia J, Yang X, Zhou Q, Jiang Y, Chen X. Synthesis of (+)-Epoxydon, (-)-Phyllostine, (-)-RKTS 33, and (-)-Parasitenone Featuring Selective Sulfonylation and Oxirane Ring Closure of Aldol Cyclization Products. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000486] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Feng Shui
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
| | - Junhao Jia
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
| | - Xing Yang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
| | - Qin Zhou
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
| | - Yimin Jiang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
| | - Xiaochuan Chen
- Key Laboratory of Green Chemistry & Technology of Ministry of Education; College of Chemistry; Sichuan University; 610064 Chengdu PR China
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16
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Chakraborty J, Ghosh A, Nanda S. Asymmetric total syntheses of naturally occurring α,β-enone-containing RALs, L-783290 and L-783277 through intramolecular base-mediated macrolactonization reaction. Org Biomol Chem 2020; 18:2331-2345. [PMID: 32162636 DOI: 10.1039/d0ob00237b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Asymmetric total synthesis of two naturally occurring α,β-enone containing RALs, L-783290 and L-783277 is described in this article. An E-selective Horner-Wadsworth-Emmons (HWE) olefination was used as a key reaction to construct the C7'-C8' olefinic unsaturation in L-783290. An enantiopure alkyne addition to the aldehyde followed by Z-selective partial reduction was employed to construct the C7'-C8' olefinic unsaturation in L-783277. Biomimetic lactonization reaction was used to construct the macrolactone core in both the target molecules.
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Affiliation(s)
- Joy Chakraborty
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, India.
| | - Ankan Ghosh
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, India. and Department of Chemistry, University of Texas at Austin, Austin, TX, USA
| | - Samik Nanda
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur, India.
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Zhao P, Xue Y, Li J, Li X, Zu X, Zhao Z, Quan C, Gao W, Feng S. Non-lipopeptide fungi-derived peptide antibiotics developed since 2000. Biotechnol Lett 2019; 41:651-673. [PMID: 31020454 DOI: 10.1007/s10529-019-02677-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 04/22/2019] [Indexed: 12/11/2022]
Abstract
The 2,5-diketopiperazines (DKPs) are the smallest cyclopeptides and their basic structure includes a six-membered piperazine nucleus. Typical peptides lack a special functional group in the oligopeptide nucleus. Both are produced by at least 35 representative genera of fungi, and possess huge potential as pharmaceutical drugs and biocontrol agents. To date, only cyclosporin A has been developed into a commercial product. This review summarises 186 fungi-derived compounds reported since 2000. Antibiotic (antibacterial, antifungal, synergistic antifungal, antiviral, antimycobacterial, antimalarial, antileishmanial, insecticidal, antitrypanosomal, nematicidal and antimicroalgal) activities are discussed for 107 of them, including 66 DKPs (14 epipolythiodioxopiperazines, 20 polysulphide bridge-free thiodiketopiperazines, and 32 sulphur-free prenylated indole DKPs), 15 highly N-methylated, and 26 non-highly N-methylated typical peptides. Structure-activity relationships, mechanisms of action, and research methods are covered in detail. Additionally, biosynthases of tardioxopiperazines and neoechinulins are highlighted. These compounds have attracted considerable interest within the pharmaceutical and agrochemical industries.
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Affiliation(s)
- Pengchao Zhao
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, 471023, China
| | - Yun Xue
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, 471023, China.
| | - Jinghua Li
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, 471023, China
| | - Xin Li
- Life Science College, Yuncheng University, Yuncheng, 044000, China
| | - Xiangyang Zu
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, 471023, China
| | - Zhanqin Zhao
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, 471023, China.
| | - Chunshan Quan
- Department of Life Science, Dalian Nationalities University, Dalian, 116600, China
| | - Weina Gao
- College of Medical Technology and Engineering, Henan University of Science and Technology, Luoyang, 471023, China
| | - Shuxiao Feng
- College of Chemical Engineering and Pharmacy, Henan University of Science and Technology, Luoyang, 471023, China
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19
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Heravi MM, Mohammadkhani L. Recent applications of Stille reaction in total synthesis of natural products: An update. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.05.018] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Jana N, Nanda S. Resorcylic acid lactones (RALs) and their structural congeners: recent advances in their biosynthesis, chemical synthesis and biology. NEW J CHEM 2018. [DOI: 10.1039/c8nj02534g] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Resorcylic acid lactones (RALs) are naturally occurring 14-membered macrolactones that constitute a class of polyketides derived from fungal metabolites and that possess significant and promising biological activity.
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Affiliation(s)
- Nandan Jana
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur
- India
| | - Samik Nanda
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur
- India
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21
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Wang X, Lin M, Xu D, Lai D, Zhou L. Structural Diversity and Biological Activities of Fungal Cyclic Peptides, Excluding Cyclodipeptides. Molecules 2017; 22:E2069. [PMID: 29186926 PMCID: PMC6150023 DOI: 10.3390/molecules22122069] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Revised: 11/20/2017] [Accepted: 11/23/2017] [Indexed: 11/23/2022] Open
Abstract
Cyclic peptides are cyclic compounds formed mainly by the amide bonds between either proteinogenic or non-proteinogenic amino acids. This review highlights the occurrence, structures and biological activities of fungal cyclic peptides (excluding cyclodipeptides, and peptides containing ester bonds in the core ring) reported until August 2017. About 293 cyclic peptides belonging to the groups of cyclic tri-, tetra-, penta-, hexa-, hepta-, octa-, nona-, deca-, undeca-, dodeca-, tetradeca-, and octadecapeptides as well as cyclic peptides containing ether bonds in the core ring have been isolated from fungi. They were mainly isolated from the genera Aspergillus, Penicillium, Fusarium, Acremonium and Amanita. Some of them were screened to have antimicrobial, antiviral, cytotoxic, phytotoxic, insecticidal, nematicidal, immunosuppressive and enzyme-inhibitory activities to show their potential applications. Some fungal cyclic peptides such as the echinocandins, pneumocandins and cyclosporin A have been developed as pharmaceuticals.
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Affiliation(s)
- Xiaohan Wang
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
| | - Minyi Lin
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
| | - Dan Xu
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
| | - Daowan Lai
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
| | - Ligang Zhou
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
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Mondol MAM, Farthouse J, Islam MT, Schüffler A, Laatsch H. Metabolites from the Endophytic Fungus Curvularia sp. M12 Act as Motility Inhibitors against Phytophthora capsici Zoospores. JOURNAL OF NATURAL PRODUCTS 2017; 80:347-355. [PMID: 28195475 DOI: 10.1021/acs.jnatprod.6b00785] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The endophytic fungus Curvularia sp., strain M12, was isolated from a leaf of the medicinal plant Murraya koenigii and cultured on rice medium followed by chemical screening of the culture extract. Chromatographic analysis led to the isolation of four new compounds, murranofuran A (1), murranolide A (2), murranopyrone (3a), and murranoic acid A (4a), along with six known metabolites, N-(2-hydroxy-6-methoxyphenyl)acetamide (5), curvularin (6), (S)-dehydrocurvularin (7), pyrenolide A (8), modiolide A (9), and 8-hydroxy-6-methoxy-3-methylisocoumarin (10). The structures of the known compounds were confirmed by comparing ESI HR mass spectra, 1H and 13C NMR, and optical rotation data with values reported in the literature. The planar structures of the new compounds were elucidated by extensive analysis of 1D and 2D NMR and mass data. The absolute configurations of the new compounds were established by coupling constant analysis, modified Mosher's method, and CD data. Compound 8 showed a strong motility impairing activity against Phytophthora capsici zoospores at a low concentration (100% at 0.5 μg/mL) in a short time (30 min). Compounds 2, 3a, 6, 7, 9, and 10 exhibited zoospore motility impairment activity at higher concentrations (IC50: 50-100 μg/mL).
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Affiliation(s)
- Muhammad Abdul Mojid Mondol
- Institute for Organic and Biomolecular Chemistry, Georg-August-University Göttingen , Tamannstrasse 2, D-37077 Göttingen, Germany
| | - Jannatul Farthouse
- Department of Biotechnology, Bangabandhu Sheikh Mujibur Rahman Agricultural University , Gazipur-1706, Bangladesh
| | - Mohammad Tofazzal Islam
- Department of Biotechnology, Bangabandhu Sheikh Mujibur Rahman Agricultural University , Gazipur-1706, Bangladesh
| | - Anja Schüffler
- Institute of Biotechnology and Drug Research , D-67663 Kaiserslautern, Germany
| | - Hartmut Laatsch
- Institute for Organic and Biomolecular Chemistry, Georg-August-University Göttingen , Tamannstrasse 2, D-37077 Göttingen, Germany
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Islam MT, Laatsch H, von Tiedemann A. Inhibitory Effects of Macrotetrolides from Streptomyces spp. On Zoosporogenesis and Motility of Peronosporomycete Zoospores Are Likely Linked with Enhanced ATPase Activity in Mitochondria. Front Microbiol 2016; 7:1824. [PMID: 27917156 PMCID: PMC5114239 DOI: 10.3389/fmicb.2016.01824] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Accepted: 10/31/2016] [Indexed: 11/25/2022] Open
Abstract
The release of zoospores from sporangia and motility of the released zoospores are critical in the disease cycle of the Peronosporomycetes that cause devastating diseases in plants, fishes, animals and humans. Disruption of any of these asexual life stages eliminates the possibility of pathogenesis. In the course of screening novel bioactive secondary metabolites, we found that extracts of some strains of marine Streptomyces spp. rapidly impaired motility and caused subsequent lysis of zoospores of the grapevine downy mildew pathogen Plasmopara viticola at 10 μg/ml. We tested a number of secondary metabolites previously isolated from these strains and found that macrotetrolide antibiotics such as nonactin, monactin, dinactin and trinactin, and nactic acids such as (+)-nonactic acid, (+)-homonactic acid, nonactic acid methyl ester, homonactic acid methyl ester, bonactin and feigrisolide C impaired motility and caused subsequent lysis of P. viticola zoospores in a dose- and time-dependent manners with dinactin being the most active compound (MIC 0.3 μg/ml). A cation channel-forming compound, gramicidin, and a carrier of monovalent cations, nigericin also showed similar biological activities. Among all 12 compounds tested, gramicidin most potently arrested the motility of zoospores at concentrations starting from 0.1 μg/ml. All macrotetrolide antibiotics also displayed similar motility impairing activities against P. viticola, Phytophthora capsici, and Aphanomyces cochlioides zoospores indicating non-specific biological effects of these compounds toward peronosporomyctes. Furthermore, macrotetrolide antibiotics and gramicidin also markedly suppressed the release of zoospores from sporangia of P. viticola in a dose-dependent manner. As macrotetrolide antibiotics and gramicidin are known as enhancers of mitochondrial ATPase activity, inhibition of zoosporogenesis and motility of zoospores by these compounds are likely linked with hydrolysis of ATP through enhanced ATPase activity in mitochondria. This is the first report on motility inhibitory and lytic activities of macrotetrolide antibiotics and nactic acids against the zoospores of peronosporomycete phytopathogens.
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Affiliation(s)
- Md Tofazzal Islam
- Division of Plant Pathology and Plant Protection, Department of Crop Sciences, Georg-August-Universität GöttingenGöttingen, Germany; Department of Biotechnology, Bangabandhu Sheikh Mujibur Rahman Agricultural UniversityGazipur, Bangladesh
| | - Hartmut Laatsch
- Institute of Organic and Biomolecular Chemistry, Georg-August-Universität Göttingen Göttingen, Germany
| | - Andreas von Tiedemann
- Department of Biotechnology, Bangabandhu Sheikh Mujibur Rahman Agricultural University Gazipur, Bangladesh
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Biodiversity, Phylogeny, and Antifungal Functions of Endophytic Fungi Associated with Zanthoxylum bungeanum. Int J Mol Sci 2016; 17:ijms17091541. [PMID: 27649145 PMCID: PMC5037815 DOI: 10.3390/ijms17091541] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 07/29/2016] [Accepted: 09/07/2016] [Indexed: 11/27/2022] Open
Abstract
This study investigated the biodiversity, phylogeny, and antifungal activity of endophytic fungi isolated from Zanthoxylum bungeanum. A total of 940 isolates obtained were grouped into 93 morphotypes, 43 species, and 23 genera, which were authenticated by molecular identification based on rDNA internal transcribed spacer (ITS) sequence analysis. A high diversity of endophytic fungi from Z. bungeanum are observed with high species richness S (43), Margalef index D′ (6.1351), Shannon–Wiener index H′ (3.2743), Simpson diversity index Ds (0.9476), PIE index (0.9486), and evenness Pielou index J (0.8705) but a low dominant index λ (0.0524). Significant tissue specificity of the endophytic fungi was observed in Z. bungeanum, and the highest species richness and diversity indexes were obtained in the stem. Phylogenetic analyses of the 93 endophytic isolates were carried out by the neighbor-joining (NJ) method to demonstrate their evolutionary processes. Antifungal activities of endophytic fungi were assayed and eight endophytic isolates showed strong and long-lasting inhibition against host pathogenic fungi Fusarium sambucinum and Pseudocercospora zanthoxyli. Here, for the first time, we systematically demonstrate the biodiversity, phylogeny, and antifungal activity of endophytic fungi associated with Z. bungeanum and reveal the value of sampling different tissues of a given plant to obtain the greatest endophyte species diversity, which might offer a framework for further investigation and utilization of endophytic fungi as aunique source of interesting and useful bioactive compounds.
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25
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Fresneda MÁ, Alibés R, Bayón P, Figueredo M. Filling Some Blanks in a Divergent Approach to Gabosines: Enantioselective Synthesis of (-)-Epiepoxydon, (+)-Phyllostine, (-)-Gabosine D, and (-)-Gabosine E. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600492] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Ramon Alibés
- Departament de Química; Universitat Autònoma de Barcelona; 08193 Bellaterra Spain
| | - Pau Bayón
- Departament de Química; Universitat Autònoma de Barcelona; 08193 Bellaterra Spain
| | - Marta Figueredo
- Departament de Química; Universitat Autònoma de Barcelona; 08193 Bellaterra Spain
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27
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Dame ZT, Islam MT, Helmke E, von Tiedemann A, Laatsch H. Oligomycins and pamamycin homologs impair motility and induce lysis of zoospores of the grapevine downy mildew pathogen,Plasmopara viticola. FEMS Microbiol Lett 2016; 363:fnw167. [DOI: 10.1093/femsle/fnw167] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/24/2016] [Indexed: 11/12/2022] Open
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Li G, Kusari S, Golz C, Strohmann C, Spiteller M. Three cyclic pentapeptides and a cyclic lipopeptide produced by endophytic Fusarium decemcellulare LG53. RSC Adv 2016. [DOI: 10.1039/c6ra10905e] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Endophytic Fusarium decemcellulare LG53 harbored in Mahonia fortunei produces three cyclic pentapeptides (1–3) and the cyclic lipopeptide, fusaristatin A (4).
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Affiliation(s)
- Gang Li
- Institute of Environmental Research (INFU)
- Department of Chemistry and Chemical Biology
- Chair of Environmental Chemistry and Analytical Chemistry
- 44221 Dortmund
- Germany
| | - Souvik Kusari
- Institute of Environmental Research (INFU)
- Department of Chemistry and Chemical Biology
- Chair of Environmental Chemistry and Analytical Chemistry
- 44221 Dortmund
- Germany
| | - Christopher Golz
- Inorganic Chemistry
- Department of Chemistry and Chemical Biology
- 44221 Dortmund
- Germany
| | - Carsten Strohmann
- Inorganic Chemistry
- Department of Chemistry and Chemical Biology
- 44221 Dortmund
- Germany
| | - Michael Spiteller
- Institute of Environmental Research (INFU)
- Department of Chemistry and Chemical Biology
- Chair of Environmental Chemistry and Analytical Chemistry
- 44221 Dortmund
- Germany
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29
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Redefining common endophytes and plant pathogens in Neofabraea, Pezicula, and related genera. Fungal Biol 2015; 120:1291-1322. [PMID: 27742091 DOI: 10.1016/j.funbio.2015.09.013] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Revised: 09/01/2015] [Accepted: 09/30/2015] [Indexed: 11/23/2022]
Abstract
Species in Neofabraea, Pezicula, and related genera have been reported as saprobes, plant pathogens or endophytes from a wide range of hosts. The asexual morphs of Neofabraea and Pezicula had been placed in Cryptosporiopsis, now a synonym of Pezicula, while Neofabraea was also linked to Phlyctema. Based on morphology and molecular data of the partial large subunit nrDNA (LSU), the internal transcribed spacer region with intervening 5.8S nrDNA (ITS), partial β-tubulin region (tub2), and the partial RNA polymerase II second largest subunit region (rpb2), the taxonomy and phylogenetic relationships of these fungi were investigated. Five new species were described in Pezicula based on morphology, while a further eight unnamed phylogenetic lineages revealed further diversity in the genus. Based on these results, the generic concept of Neofabraea was also emended. Phlyctema, which was previously associated with Neofabraea, formed a distinct clade, separate from Neofabraea s. str. Two new neofabraea-like genera, Parafabraea and Pseudofabraea were proposed, along with one new combination in Neofabraea s. str. To stabilise the application of these names, an epitype was designated for Pe. carpinea, the type species of Pezicula, and for N. malicorticis, the type species of Neofabraea.
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Mondol MAM, Surovy MZ, Islam MT, Schüffler A, Laatsch H. Macrocyclic Trichothecenes from Myrothecium roridum Strain M10 with Motility Inhibitory and Zoosporicidal Activities against Phytophthora nicotianae. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:8777-8786. [PMID: 26320597 DOI: 10.1021/acs.jafc.5b02366] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The cytotoxicity of the extract obtained from Myrothecium roridum M10 and a characteristic (1)H signal at δH ∼8 led to the assumption that verrucarin/roridin-type compounds were present. Upscaling on rice medium led to the isolation of four new metabolites: verrucarins Y (1) and Z (6) (macrocyclic trichothecenes), bilain D (12) (a diketopiperazine derivative), and hamavellone C (14) (an unusual cyclopropyl diketone). In addition, nine known trichothecenes [verrucarin A (3), 16-hydroxyverrucarin A (5), verrucarin B (7), 16-hydroxyverrucarin B (8), verrucarin J (2), verrucarin X (4), roridin A (9), roridin L-2 (10), and trichoverritone (11)] and a bicyclic lactone [myrotheciumone A (15)] were identified. Their structures and configurations were determined by spectroscopic methods, published data, Mosher's method, and considering biosyntheses. Some trichothecenes showed motility inhibition followed by lysis of the zoospores against devastating Phytophthora nicotianae within 5 min. Compounds 2, 3, 7, and 9 also exhibited potent activities against Candida albicans and Mucor miehei.
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Affiliation(s)
- Muhammad Abdul Mojid Mondol
- Institute for Organic and Biomolecular Chemistry, Georg-August-University Göttingen , Tammannstrasse 2, D-37077 Göttingen, Germany
| | - Musrat Zahan Surovy
- Department of Biotechnology, Bangabandhu Sheikh Mujibur Rahman Agricultural University , Gazipur 1706, Bangladesh
| | - M Tofazzal Islam
- Department of Biotechnology, Bangabandhu Sheikh Mujibur Rahman Agricultural University , Gazipur 1706, Bangladesh
| | - Anja Schüffler
- Institute of Biotechnology and Drug Research , D-67663 Kaiserslautern, Germany
| | - Hartmut Laatsch
- Institute for Organic and Biomolecular Chemistry, Georg-August-University Göttingen , Tammannstrasse 2, D-37077 Göttingen, Germany
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Biological evaluation and determination of the absolute configuration of chloromonilicin, a strong antimicrobial metabolite isolated from Alternaria sonchi. J Antibiot (Tokyo) 2015; 69:9-14. [PMID: 26174176 DOI: 10.1038/ja.2015.74] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Revised: 03/03/2015] [Accepted: 06/08/2015] [Indexed: 11/08/2022]
Abstract
Chloromonilicin was isolated for the first time from Alternaria sonchi, a mycoherbicide proposed for the control of the noxious weed Sonchus arvensis. The already known alternethanoxins A and B and the three recently isolated phytotoxic polycyclic ethanones named alternethanoxins C-E were also isolated from the same source. Chloromonilicin was identified by spectroscopic data (essentially one-dimensional NMR, 2-dimensional NMR and high-resolution ESI-MS) and its structure was confirmed by single X-ray analysis, which also allowed the assignment of the absolute configuration. This latter was independently confirmed by electronic CD calculations. When chloromonilicin was tested for its antimicrobial activity, it was active at concentrations 0.5-1 μg per disc against four bacterial species and a yeast fungus. The compound inhibited conidial germination of four plant pathogens at concentration of 1-10 μg ml(-1). No phytotoxic activity of this antibiotic by leaf-disc puncture bioassay was detected.
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A new dimeric naphtho-γ-pyrone from an endophytic fungus Aspergillus niger AKRN associated with the roots of Entandrophragma congoënse collected in Cameroon. ACTA ACUST UNITED AC 2015. [DOI: 10.1515/znb-2015-0036] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
A new dimeric naphtho-γ-pyrone, 2-hydroxydihydronigerone (1), along with five compounds, nigerone (2), pyrophen (3), kojic acid (4), 4-(hydroxymethyl)-5-hydroxy-2H-pyran-2-one (5), and p-hydroxyphenylacetic acid (6), was isolated from an endophytic fungus Aspergillus niger AKRN associated with the roots of Entandrophragma congoënse. The structure of the new compound has been elucidated using spectroscopic data including 1D and 2D NMR as well as the high-resolution mass spectrometry. Compounds 1–5 showed weak antimicrobial activity on five selected Gram-negative bacteria, namely Enterobacter aerogenes (CM64), Enterobacter cloacae (BM67), Klebsiella pneumonia (K2), and Escherichia coli (ATCC8739 and ATCC10536).
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Shen W, Mao H, Huang Q, Dong J. Benzenediol lactones: a class of fungal metabolites with diverse structural features and biological activities. Eur J Med Chem 2015; 97:747-77. [DOI: 10.1016/j.ejmech.2014.11.067] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Revised: 11/04/2014] [Accepted: 11/26/2014] [Indexed: 12/12/2022]
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34
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Arnhold FS, Linden A, Heimgartner H. Synthesis of Aib- and Phe(2Me)-Containing Cyclopentapeptides. Helv Chim Acta 2015. [DOI: 10.1002/hlca.201400323] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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35
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El-Elimat T, Raja H, Day CS, Chen WL, Swanson SM, Oberlies NH. Greensporones: resorcylic acid lactones from an aquatic Halenospora sp. JOURNAL OF NATURAL PRODUCTS 2014; 77:2088-98. [PMID: 25093280 PMCID: PMC4176394 DOI: 10.1021/np500497r] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Indexed: 05/20/2023]
Abstract
Fourteen new resorcylic acid lactones (1-14) were isolated from an organic extract of a culture of a freshwater aquatic fungus Halenospora sp. originating from a stream in North Carolina. The structures were elucidated using a set of spectroscopic and spectrometric techniques. The absolute configuration of one representative member of the compounds (7) was assigned using X-ray crystallography of an analogue that incorporated a heavy atom, whereas for compounds 8-11, a modified Mosher's ester method was utilized. The relative configurations of compounds 12-14 were determined on the basis of NOE data. Compounds 12-14 were proposed as artifacts produced by intramolecular cycloetherification of the ε-hydroxy-α,β-unsaturated ketone moieties of the parent compounds during the purification processes. The isolated compounds, except for 8 and 12, were tested against the MDA-MB-435 (melanoma) and HT-29 (colon) cancer cell lines. Compound 5 was the most potent, with IC50 values of 2.9 and 7.5 μM, respectively. The compounds were evaluated as TAK1-TAB1 inhibitors but were found to be inactive.
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Affiliation(s)
- Tamam El-Elimat
- Department
of Chemistry and Biochemistry, University
of North Carolina at Greensboro, Greensboro, North Carolina 27402, United States
| | - Huzefa
A. Raja
- Department
of Chemistry and Biochemistry, University
of North Carolina at Greensboro, Greensboro, North Carolina 27402, United States
| | - Cynthia S. Day
- Department
of Chemistry, Wake Forest University, Winston-Salem, North Carolina 27109, United States
| | - Wei-Lun Chen
- Department
of Medicinal Chemistry and Pharmacognosy, University of Illinois at Chicago, Chicago, Illinois 60612, United States
| | - Steven M. Swanson
- Department
of Medicinal Chemistry and Pharmacognosy, University of Illinois at Chicago, Chicago, Illinois 60612, United States
| | - Nicholas H. Oberlies
- Department
of Chemistry and Biochemistry, University
of North Carolina at Greensboro, Greensboro, North Carolina 27402, United States
- Phone: 336-334-5474. E-mail:
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Kongue Tatong MD, Talontsi FM, Abdel Rahim HM, Islam MT, Oswald RB, Laatsch H. Banchromene and other secondary metabolites from the endophytic fungus Fusarium sp. obtained from Piper guineense inhibit the motility of phytopathogenic Plasmopara viticola zoospores. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.06.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Gulder TAM, Hong H, Correa J, Egereva E, Wiese J, Imhoff JF, Gross H. Isolation, structure elucidation and total synthesis of lajollamide A from the marine fungus Asteromyces cruciatus. Mar Drugs 2013; 10:2912-35. [PMID: 23342379 PMCID: PMC3528133 DOI: 10.3390/md10122912] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The marine-derived filamentous fungus Asteromyces cruciatus 763, obtained off the coast of La Jolla, San Diego, USA, yielded the new pentapeptide lajollamide A (1), along with the known compounds regiolone (2), hyalodendrin (3), gliovictin (4), 1N-norgliovicitin (5), and bis-N-norgliovictin (6). The planar structure of lajollamide A (1) was determined by Nuclear Magnetic Resonance (NMR) spectroscopy in combination with mass spectrometry. The absolute configuration of lajollamide A (1) was unambiguously solved by total synthesis which provided three additional diastereomers of 1 and also revealed that an unexpected acid-mediated partial racemization (2:1) of the L-leucine and L-N-Me-leucine residues occurred during the chemical degradation process. The biological activities of the isolated metabolites, in particular their antimicrobial properties, were investigated in a series of assay systems.
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Affiliation(s)
- Tobias A. M. Gulder
- Kekulé-Institute of Organic Chemistry and Biochemistry, University of Bonn, Gerhard-Domagk Str. 1, Bonn 53121, Germany; E-Mail:
- Authors to whom correspondence should be addressed; E-Mails: (T.A.M.G.); (H.G.); Tel.: +49-228-735797 (T.A.M.G.); Fax: +49-228-739712 (T.A.M.G.); Tel.: +49-7071-2976970 (H.G.); Fax: +49-7071-295250 (H.G.)
| | - Hanna Hong
- Kekulé-Institute of Organic Chemistry and Biochemistry, University of Bonn, Gerhard-Domagk Str. 1, Bonn 53121, Germany; E-Mail:
| | - Jhonny Correa
- Institute for Pharmaceutical Biology, University of Bonn, Nussallee 6, Bonn 53115, Germany; E-Mails: (J.C.); (E.E.)
| | - Ekaterina Egereva
- Institute for Pharmaceutical Biology, University of Bonn, Nussallee 6, Bonn 53115, Germany; E-Mails: (J.C.); (E.E.)
| | - Jutta Wiese
- Kieler Wirkstoff-Zentrum (KiWiZ) at the Helmholtz-Zentrum für Ozeanforschung GEOMAR, Am Kiel-Kanal 44, Kiel 24106, Germany; E-Mails: (J.W.); (J.F.I.)
| | - Johannes F. Imhoff
- Kieler Wirkstoff-Zentrum (KiWiZ) at the Helmholtz-Zentrum für Ozeanforschung GEOMAR, Am Kiel-Kanal 44, Kiel 24106, Germany; E-Mails: (J.W.); (J.F.I.)
| | - Harald Gross
- Institute for Pharmaceutical Biology, University of Tübingen, Auf der Morgenstelle 8, Tübingen 72076, Germany
- Authors to whom correspondence should be addressed; E-Mails: (T.A.M.G.); (H.G.); Tel.: +49-228-735797 (T.A.M.G.); Fax: +49-228-739712 (T.A.M.G.); Tel.: +49-7071-2976970 (H.G.); Fax: +49-7071-295250 (H.G.)
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Talontsi FM, Dittrich B, Schüffler A, Sun H, Laatsch H. Epicoccolides: Antimicrobial and Antifungal Polyketides from an Endophytic FungusEpicoccumsp. Associated withTheobroma cacao. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300146] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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