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Wang G, Yin Z, Wang S, Yuan Y, Chen Y, Kang W. Diversified Polyketides With Anti-inflammatory Activities From Mangrove Endophytic Fungus Daldinia eschscholtzii KBJYZ-1. Front Microbiol 2022; 13:900227. [PMID: 35620105 PMCID: PMC9127611 DOI: 10.3389/fmicb.2022.900227] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Accepted: 04/04/2022] [Indexed: 11/13/2022] Open
Abstract
In total, five new polyketide derivatives: eschscholin B (2), dalditone A and B (3 and 4), (1R, 4R)-5-methoxy-1,2,3,4-tetrahydronaphthalene-1,4-dio (5), and daldilene A (6), together with 10 known as analogs (1, 7-15) were isolated from the mangrove endophytic fungus Daldinia eschscholtzii KBJYZ-1. Their structures and absolute configurations were established by extensive analysis of NMR and HRESIMS spectra data combined with ECD calculations and the reported literature. Compounds 2 and 6 showed significant cell-based anti-inflammatory activities with IC50 values of 19.3 and 12.9 μM, respectively. In addition, western blot results suggested that compound 2 effectively inhibits the expression of iNOS and COX-2 in LPS-induced RAW264.7 cells. Further molecular biology work revealed the potential mechanism of 2 exerts anti-inflammatory function by inactivating the MAPK and NF-κB signaling pathways.
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Affiliation(s)
- Guisheng Wang
- National R&D Center for Edible Fungus Processing Technology, Henan University, Kaifeng, China
| | - Zhenhua Yin
- National R&D Center for Edible Fungus Processing Technology, Henan University, Kaifeng, China
| | - Senye Wang
- National R&D Center for Edible Fungus Processing Technology, Henan University, Kaifeng, China
| | - Yilin Yuan
- National R&D Center for Edible Fungus Processing Technology, Henan University, Kaifeng, China
| | - Yan Chen
- National R&D Center for Edible Fungus Processing Technology, Henan University, Kaifeng, China.,Joint International Research Laboratory of Food and Medicine Resource Function, Kaifeng, China
| | - Wenyi Kang
- National R&D Center for Edible Fungus Processing Technology, Henan University, Kaifeng, China.,Joint International Research Laboratory of Food and Medicine Resource Function, Kaifeng, China.,Kaifeng Key Laboratory of Functional Components in Health Food, Kaifeng, China
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Tang M, Zhou X, Cai J, Chen G. Chemical constituents from the fresh flower buds of Musa nana and their chemotaxonomic significance. BIOCHEM SYST ECOL 2021. [DOI: 10.1016/j.bse.2021.104348] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Weerasinghe RH, Maduranga K, Attanayake RN, Shevkar C, Kate AS, Weerakoon G, Kalia K, Paranagama PA. Bioactive Properties and Metabolite Profiles of Endolichenic Fungi in Mangrove Ecosystem of Negombo Lagoon, Sri Lanka. Nat Prod Commun 2021. [DOI: 10.1177/1934578x211048652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Endolichenic fungi (ELF) serve as a novel source of natural products with distinctive bioactivities. A total of 58 ELF isolated from 29 lichens collected from mangrove and mangrove-associated plants of Negombo lagoon, Sri Lanka were identified using morphological and DNA barcoding techniques. Ethyl acetate extracts of 18 such identified ELF isolates were subjected to in vitro assays to determine antioxidant, anti-inflammatory, tyrosinase inhibitory and antibacterial potency. Liquid chromatography–mass spectrometry (LC–MS) dereplication was conducted on the crude extracts in order to detect the secondary metabolites present. The extracts of Daldinia eschscholtzii and Hypoxylon lividipigmentum had the highest radical scavenging activity with SC50 values 14.27 ± 0.24 µg/mL and 18.34 ± 1.37 µg/mL, respectively. D. eschscholtzii also exhibited remarkable anti-inflammatory activity (IC50 7.97 ± 0.09 µg/mL). Tyrosinase inhibitory activity was highest in Cytospora xylocarpi (IC50 68.50 ± 0.34 µg/mL), while the highest activity against aerobic bacterial species Escherichia coli, Bacillus subtilis, Staphylococcus aureus and the anaerobic bacterial strain Streptococcus mutans was observed in the extracts of Xylaria feegenesis and Curvularia lunata. After a thorough study of the LC–MS profiles, it was found that the chemical profiles of Neofusicoccum occulatum, H. lividipigmentum and Myramaececium rubricosum were previously poorly explored in the literature.
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Affiliation(s)
| | - Kasun Maduranga
- Department of Chemistry, University of Kelaniya, Kelaniya, Sri Lanka
| | - Renuka N. Attanayake
- Department of Plant and Molecular Biology, University of Kelaniya, Kelaniya, Sri Lanka
| | - Chaitrali Shevkar
- National Institute of Pharmaceutical Education and Research, Ahmedabad, India
| | - Abhijeet S. Kate
- National Institute of Pharmaceutical Education and Research, Ahmedabad, India
| | | | - Kiran Kalia
- National Institute of Pharmaceutical Education and Research, Ahmedabad, India
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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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Wutthiwong N, Suthiphasilp V, Pintatum A, Suwannarach N, Kumla J, Lumyong S, Maneerat T, Charoensup R, Cheenpracha S, Limtharakul T, Pyne SG, Laphookhieo S. Daldiniaeschsone A, a Rare Tricyclic Polyketide Having a Chromone Unit Fused to a δ-Lactone and Its Symmetrical Biphenyl Dimer, Daldiniaeschsone B, from an Endophytic Fungus Daldinia eschscholtzii SDBR-CMUNKC745. J Fungi (Basel) 2021; 7:358. [PMID: 34063266 PMCID: PMC8147462 DOI: 10.3390/jof7050358] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/29/2021] [Accepted: 04/30/2021] [Indexed: 11/17/2022] Open
Abstract
Daldiniaeschsone A (1), a rare tricyclic polyketide having a chromone unit fused to a δ-lactone and its symmetrical 6,6'-biphenyl dimer, daldiniaeschsone B (2), together with three known compounds (3-5), were isolated from a plant-derived endophytic fungus, Daldinia eschscholtzii SDBR-CMUNKC745. Their structures were elucidated by extensive 1D and 2D NMR spectroscopic data and HRESIMS. All compounds showed α-glucosidase inhibitory activity with IC50 values ranging from 0.16-0.85 mM and compound 1 was the best α-glucosidase inhibitory activity (IC50 = 0.16 mM).
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Affiliation(s)
- Natnicha Wutthiwong
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; (N.W.); (N.S.); (J.K.)
- Research Center of Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Virayu Suthiphasilp
- Center of Chemical Innovation for Sustainability (CIS), School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand; (V.S.); (A.P.); (T.M.)
| | - Aknarin Pintatum
- Center of Chemical Innovation for Sustainability (CIS), School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand; (V.S.); (A.P.); (T.M.)
| | - Nakarin Suwannarach
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; (N.W.); (N.S.); (J.K.)
- Research Center of Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Jaturong Kumla
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; (N.W.); (N.S.); (J.K.)
- Research Center of Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Saisamorn Lumyong
- Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand; (N.W.); (N.S.); (J.K.)
- Research Center of Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai 50200, Thailand
- Academy of Science, The Royal Society of Thailand, Bangkok 10300, Thailand
| | - Tharakorn Maneerat
- Center of Chemical Innovation for Sustainability (CIS), School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand; (V.S.); (A.P.); (T.M.)
- Medicinal Plants Innovation Center of Mae Fah Luang University, Chiang Rai 57100, Thailand;
| | - Rawiwan Charoensup
- Medicinal Plants Innovation Center of Mae Fah Luang University, Chiang Rai 57100, Thailand;
- School of Integrative Medicine, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | | | - Thunwadee Limtharakul
- Department of Chemistry, Faculty of Science and Research Center on Chemistry for Development of Health Promoting Products from Northern Resources, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Stephen G. Pyne
- School of Chemistry and Molecular Bioscience, University of Wollongong, Wollongong, NSW 2522, Australia;
| | - Surat Laphookhieo
- Center of Chemical Innovation for Sustainability (CIS), School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand; (V.S.); (A.P.); (T.M.)
- Medicinal Plants Innovation Center of Mae Fah Luang University, Chiang Rai 57100, Thailand;
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Kong FD, Yi TF, Ma QY, Xie QY, Zhou LM, Chen JP, Dai HF, Wu YG, Zhao YX. Biphenyl metabolites from the patchouli endophytic fungus Alternaria sp. PfuH1. Fitoterapia 2020; 146:104708. [PMID: 32827694 DOI: 10.1016/j.fitote.2020.104708] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/04/2020] [Accepted: 08/16/2020] [Indexed: 11/27/2022]
Abstract
Patchouli is a tropical medicinal and spice crop with high economic value, and the endophytic microorganism is also one of its important components and can provide new active compounds with medicinal use. In the present study, four new biphenyl compounds named 3-O-demethylaltenuisol (1), (-)-dialtenuisol (5) and (+)-dialtenuisol (6), and altertoxin VII (9), as well as six known related compounds, were isolated from the patchouli (Pogostemon cablin) endophytic fungus Alternaria sp. PfuH1. The structures of the new compounds were elucidated from spectroscopic data, ECD spectra analysis, and ECD calculations. Compounds 5 and 6 are a pair of dimeric axially chiral enantiomers. Compounds 2, 4, and 9 showed antibacterial activities against S. agalactiae with MIC values of 9.3, 85.3, and 17.3 μg/mL, respectively, and compound 4 also showed weak antibacterial activity against E. coli with MIC value of 128 μg/mL.
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Affiliation(s)
- Fan-Dong Kong
- Hainan Key Laboratory for Research and Development of Natural Product from Li Folk Medicine, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agriculture Sciences, Haikou 571101, China; Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agriculture Sciences, Haikou 571101, China
| | - Tian-Feng Yi
- Hainan Key Laboratory for Research and Development of Natural Product from Li Folk Medicine, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agriculture Sciences, Haikou 571101, China; College of Horticulture, Hainan University, Haikou 570228, China
| | - Qing-Yun Ma
- Hainan Key Laboratory for Research and Development of Natural Product from Li Folk Medicine, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agriculture Sciences, Haikou 571101, China; Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agriculture Sciences, Haikou 571101, China
| | - Qing-Yi Xie
- Hainan Key Laboratory for Research and Development of Natural Product from Li Folk Medicine, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agriculture Sciences, Haikou 571101, China; Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agriculture Sciences, Haikou 571101, China
| | - Li-Man Zhou
- Hainan Key Laboratory for Research and Development of Natural Product from Li Folk Medicine, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agriculture Sciences, Haikou 571101, China; Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agriculture Sciences, Haikou 571101, China
| | - Jin-Ping Chen
- Hainan Key Laboratory for Research and Development of Natural Product from Li Folk Medicine, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agriculture Sciences, Haikou 571101, China; Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agriculture Sciences, Haikou 571101, China
| | - Hao-Fu Dai
- Hainan Key Laboratory for Research and Development of Natural Product from Li Folk Medicine, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agriculture Sciences, Haikou 571101, China; Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agriculture Sciences, Haikou 571101, China
| | - You-Gen Wu
- College of Horticulture, Hainan University, Haikou 570228, China
| | - You-Xing Zhao
- Hainan Key Laboratory for Research and Development of Natural Product from Li Folk Medicine, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agriculture Sciences, Haikou 571101, China; Hainan Institute for Tropical Agricultural Resources, Chinese Academy of Tropical Agriculture Sciences, Haikou 571101, China.
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Agricultural and Other Biotechnological Applications Resulting from Trophic Plant-Endophyte Interactions. AGRONOMY-BASEL 2019. [DOI: 10.3390/agronomy9120779] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Endophytic microbiota plays a role not only in supplying plants with the basic nutrients indispensable for their growth, but also helps them in the mechanisms of adaptation to various environmental stresses (i.e., salinity, drought), which is important in the aspect of crop yields. From the agricultural and biotechnological points of view, the knowledge of endophytes and their roles in increasing crop yields, plant resistance to diseases, and helping to survive environmental stress is extremely desirable. This paper reviews some of the beneficial plant–microbe interactions that might be potentially used in both agriculture (plant growth stimulation effect, adaptation of host organisms in salinity and drought conditions, and support of defense mechanisms in plants), and in biotechnology (bioactive metabolites, application of endophytes for bioremediation and biotransformation processes, and production of biofertilizers and biopreparations). Importantly, relatively recent reports on endophytes from the last 10 years are summarized in this paper.
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Helaly SE, Thongbai B, Stadler M. Diversity of biologically active secondary metabolites from endophytic and saprotrophic fungi of the ascomycete order Xylariales. Nat Prod Rep 2019; 35:992-1014. [PMID: 29774351 DOI: 10.1039/c8np00010g] [Citation(s) in RCA: 127] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Covering: up to December 2017 The diversity of secondary metabolites in the fungal order Xylariales is reviewed with special emphasis on correlations between chemical diversity and biodiversity as inferred from recent taxonomic and phylogenetic studies. The Xylariales are arguably among the predominant fungal endophytes, which are the producer organisms of pharmaceutical lead compounds including the antimycotic sordarins and the antiparasitic nodulisporic acids, as well as the marketed drug, emodepside. Many Xylariales are "macromycetes", which form conspicuous fruiting bodies (stromata), and the metabolite profiles that are predominant in the stromata are often complementary to those encountered in corresponding mycelial cultures of a given species. Secondary metabolite profiles have recently been proven highly informative as additional parameters to support classical morphology and molecular phylogenetic approaches in order to reconstruct evolutionary relationships among these fungi. Even the recent taxonomic rearrangement of the Xylariales has been relying on such approaches, since certain groups of metabolites seem to have significance at the species, genus or family level, respectively, while others are only produced in certain taxa and their production is highly dependent on the culture conditions. The vast metabolic diversity that may be encountered in a single species or strain is illustrated based on examples like Daldinia eschscholtzii, Hypoxylon rickii, and Pestalotiopsis fici. In the future, it appears feasible to increase our knowledge of secondary metabolite diversity by embarking on certain genera that have so far been neglected, as well as by studying the volatile secondary metabolites more intensively. Methods of bioinformatics, phylogenomics and transcriptomics, which have been developed to study other fungi, are readily available for use in such scenarios.
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Affiliation(s)
- Soleiman E Helaly
- Dept Microbial Drugs, Helmholtz Centre for Infection Research, Inhoffenstr. 7, 38124 Braunschweig, Germany.
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Liu HX, Tan HB, Chen YC, Li SN, Li HH, Zhang WM. Cytotoxic triquinane-type sesquiterpenoids from the endophytic fungus Cerrena sp. A593. Nat Prod Res 2019; 34:2430-2436. [PMID: 30600698 DOI: 10.1080/14786419.2018.1539977] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The culture broth of Cerrena sp. A593, which was isolated from Pogostemon cablin, showed potent cytotoxicity against several human tumor cell lines. The following chemical study resulted in the isolation of two new triquinane-type sesquiterpenoids, named cerrenins D (1) and E (2), along with two known compounds plerocybellone A (3) and chloriolin B (4). Their structures were fully assigned with the aid of extensive spectroscopic analysis (1H and 13C NMR, HSQC, HMBC, 1H-1H COSY, HRESIMS, and IR) and data from the literature. Moreover, cytotoxic activity in vitro of compounds 1-4 were evaluated against SF-268, MCF-7, NCI-H460, and HepG-2 tumor cell lines. The new compound 1 exhibited weak growth inhibitory activity against all the four tumor cell lines with IC50 values of 41.01, 14.43, 29.67, 44.32 μM.
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Affiliation(s)
- Hong-Xin Liu
- State Key Laboratory of Applied Microbiology Southern China Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, China
| | - Hai-Bo Tan
- Program for Natural Products Chemical Biology, Key Laboratory of Plant Resources Conservation and Sustainable Utilization Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Yu-Chan Chen
- State Key Laboratory of Applied Microbiology Southern China Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, China
| | - Sai-Ni Li
- State Key Laboratory of Applied Microbiology Southern China Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, China
| | - Hao-Hua Li
- State Key Laboratory of Applied Microbiology Southern China Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, China
| | - Wei-Min Zhang
- State Key Laboratory of Applied Microbiology Southern China Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, China
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