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Souza JADM, Gubiani JR, de Siqueira KA, de Camargo MJ, Garcez WS, de Sousa PT, Soares MA, Araújo ÂR, Nunes EVDS, Vieira LCC, Sampaio OM, Goulart LS, Biasetto CR, de Menezes OT, de Oliveira CM, Nogueira CR, Pinto LDS, Teles HL. Antimicrobial metabolites produced by endophytic fungi associated with the leaves of Vochysia divergens. Nat Prod Res 2024; 38:978-985. [PMID: 37154616 DOI: 10.1080/14786419.2023.2208723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 04/25/2023] [Indexed: 05/10/2023]
Abstract
Investigation of the endophytic fungi Nigrospora sphaerica, Nigrospora oryzae, and Pseudofusicoccum stromaticum MeOH fractions isolated from the leaves of Vochysia divergens, a medicinal species from the Brazilian Pantanal, led to the identification of five compounds, namely a new compound (1E,8Z)-10,11-dihydroxy-5,5,8-trimethyl-4-oxocycloundeca-1,8-diene-1-carbaldehyde (1) and four known compounds: 5-methylmellein (2), sclerone (3), daldinone A (4), and lasiodiplodin (5). All compounds were identified using spectroscopic methods, and 1 was corroborated with mass spectrometry, while the known compounds were compared with data in the literature. The relative configuration of compound 1 was determined based on theoretical conformational studies as well as the J experimental values between the hydroxymethyne hydrogens. The antimicrobial activity of the compounds was evaluated. Promising results were obtained for compounds 2, 4, and 5 since they inhibited the bacterium Pseudomonas aeruginosa, an opportunistic pathogen, suggesting the potential of these microorganisms as a source of new antibacterial agents.
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Affiliation(s)
| | - Juliana R Gubiani
- Institute of Chemistry of São Carlos, São Paulo University, São Carlos, Brazil
| | | | | | - Walmir S Garcez
- Institute of Chemistry, Federal University of Mato Grosso do Sul, Campo Grande, Brazil
| | - Paulo T de Sousa
- Department of Chemistry, Federal University of Mato Grosso, Cuiabá, Brazil
| | - Marcos A Soares
- Institute of Biosciences, Federal University of Mato Grosso, Cuiabá, Brazil
| | - Ângela R Araújo
- Institute of Chemistry, Department of Biochemistry and Organic Chemistry, NuBBE, São Paulo State University, Araraquara, Brazil
| | - Emanuel V Dos S Nunes
- Institute of Chemistry, Department of Biochemistry and Organic Chemistry, NuBBE, São Paulo State University, Araraquara, Brazil
| | - Lucas C C Vieira
- Department of Chemistry, Federal University of Mato Grosso, Cuiabá, Brazil
| | - Olívia M Sampaio
- Department of Chemistry, Federal University of Mato Grosso, Cuiabá, Brazil
| | - Letícia S Goulart
- Faculty of Health Sciences, Federal University of Rondonópolis, Rondonópolis, Brazil
| | - Carolina R Biasetto
- Institute of Chemistry, Department of Biochemistry and Organic Chemistry, NuBBE, São Paulo State University, Araraquara, Brazil
| | - Orivaldo T de Menezes
- Institute of Exact Sciences and Technology, Federal University of Amazonas, Itacoatiara, Brazil
| | - Camila M de Oliveira
- Institute of Exact and Natural Sciences, Federal University of Rondonópolis, Rondonópolis, Brazil
| | - Cláudio R Nogueira
- Faculty of Exact Sciences and Technology, Federal University of Grande Dourados, Dourados, Brazil
| | - Luciano da S Pinto
- Department of Chemistry, Federal University of São Carlos, São Carlos, Brazil
| | - Helder L Teles
- Institute of Exact and Natural Sciences, Federal University of Rondonópolis, Rondonópolis, Brazil
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2
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Lee W, Kim DG, Perera RH, Kim JS, Cho Y, Lee JW, Seo CW, Lim YW. Diversity of Nigrospora ( Xylariales, Apiosporaceae) Species Identified in Korean Macroalgae Including Five Unrecorded Species. MYCOBIOLOGY 2023; 51:401-409. [PMID: 38179117 PMCID: PMC10763912 DOI: 10.1080/12298093.2023.2283272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 11/09/2023] [Indexed: 01/06/2024]
Abstract
Nigrospora (Xylariales, Apiosporaceae) consists of species of terrestrial plant endophytes and pathogens. Nigrospora has also been reported in marine environments such as mangroves, sea fans, and macroalgae. However, limited research has been conducted on Nigrospora associated with macroalgae. Here, we isolated Nigrospora species from three types of algae (brown, green, and red algae) from Korean islands (Chuja, Jeju, and Ulleung) based on phylogenetic analyses of multigenetic markers: the internal transcribed spacers (ITS), beta-tubulin (BenA), and translation elongation factor 1 (TEF1-α). A total of 17 Nigrospora strains were isolated from macroalgae and identified as nine distinct species. The majority of Nigrospora species (seven) were found on brown algae, followed by red algae (three), and then green algae (two). To our understanding, this study represents the first account of N. cooperae, N. covidalis, N. guilinensis, N. lacticolonia, N. osmanthi, N. pyriformis, and N. rubi occurring in marine environments. Additionally, this study provides the first report of the occurrence of N. cooperae, N. covidalis, N. guilinensis, N. lacticolonia, and N. osmanthi in South Korea. This study will provide valuable insights for future research exploring the functions of fungi in macroalgal communities.
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Affiliation(s)
- Wonjun Lee
- School of Biological Sciences and Institute of Microbiology, Seoul National University, Seoul, Korea
| | - Dong-Geon Kim
- School of Biological Sciences and Institute of Microbiology, Seoul National University, Seoul, Korea
| | - Rekhani H. Perera
- School of Biological Sciences and Institute of Microbiology, Seoul National University, Seoul, Korea
| | - Ji Seon Kim
- School of Biological Sciences and Institute of Microbiology, Seoul National University, Seoul, Korea
| | - Yoonhee Cho
- School of Biological Sciences and Institute of Microbiology, Seoul National University, Seoul, Korea
| | - Jun Won Lee
- School of Biological Sciences and Institute of Microbiology, Seoul National University, Seoul, Korea
| | - Chang Wan Seo
- School of Biological Sciences and Institute of Microbiology, Seoul National University, Seoul, Korea
| | - Young Woon Lim
- School of Biological Sciences and Institute of Microbiology, Seoul National University, Seoul, Korea
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3
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Xu T, Song Z, Hou Y, Liu S, Li X, Yang Q, Wu S. Secondary metabolites of the genus Nigrospora from terrestrial and marine habitats: Chemical diversity and biological activity. Fitoterapia 2022; 161:105254. [PMID: 35872163 DOI: 10.1016/j.fitote.2022.105254] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 07/11/2022] [Accepted: 07/17/2022] [Indexed: 11/16/2022]
Abstract
Secondary metabolites produced by the ascomycetes have attracted wide attention from researchers. Their diverse chemical structures and rich biological activities are essential in medicine, food, and agriculture. The monophyletic Nigrospora genus belongs to the Apiosporaceae family and is a rich source of novel and diverse bioactive metabolites. It occurs as a common plant pathogen, endophyte, and saprobe distributed in many ecosystems worldwide. Researchers have focused on discovering new species and secondary metabolites in the past ten years. The host diseases caused by Nigrospora species are also investigated. This review describes 50 references from Web of Science, CNKI, Google Scholar and PubMed related to the secondary metabolites from Nigrospora. Here, a total of 231 compounds isolated from five known species and 21 unidentified species of Nigrospora from January 1991 to June 2022 are summarized. Their structures are attributed to polyketides, terpenoids, steroids, N-containing compounds, and fatty acids. Meanwhile, 77 metabolites exhibited various biological activities like cytotoxic, antifungal, antibacterial, antiviral, antioxidant, anti-inflammatory, antileukemic, antimalarial, phytotoxic, enzyme inhibitory, etc. Notably, this review presents a comprehensive literature survey focusing on the chemistry and bioactivity of secondary metabolites from Nigrospora.
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Affiliation(s)
- Tangchang Xu
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming 650091, China
| | - Zhiqiang Song
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming 650091, China
| | - Yage Hou
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming 650091, China
| | - Sisi Liu
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming 650091, China
| | - Xinpeng Li
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming 650091, China
| | - Qingrong Yang
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming 650091, China
| | - Shaohua Wu
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, School of Life Sciences, Yunnan University, Kunming 650091, China.
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4
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Kuang QX, Luo Y, Lei LR, Guo WX, Li XA, Wang YM, Huo XY, Liu MD, Zhang Q, Feng D, Huang LJ, Wang D, Gu YC, Deng Y, Guo DL. Hydroanthraquinones from Nigrospora sphaerica and Their Anti-inflammatory Activity Uncovered by Transcriptome Analysis. JOURNAL OF NATURAL PRODUCTS 2022; 85:1474-1485. [PMID: 35696541 DOI: 10.1021/acs.jnatprod.1c01141] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Transcriptome analysis is shown to be an effective strategy to understand the potential function of natural products. Here, it is reported that 11 previously undescribed hydroanthraquinones [nigroquinones A-K (1-11)], along with eight known congeners, were isolated from Nigrospora sphaerica. Their structures were elucidated by interpreting spectroscopic and spectrometric data including high-resolution mass spectra and nuclear magnetic resonance. The absolute configurations of 1-11 were confirmed by electronic circular dichroism calculations. Transcriptome analysis revealed that 3 (isolated in the largest amount) might be anti-inflammatory. Assays based on LPS-induced RAW264.7 macrophages and zebrafish embryos confirmed that some of the isolated hydroanthraquinones attenuated the secretion of pro-inflammatory mediators in vitro and in vivo. Further Western blotting and immunofluorescence experiments indicated that 4 (which showed the most obvious nitric oxide inhibition) could suppress the expression of nuclear factor-kappa-B (NF-κB), phosphorylation of the inhibitor of NF-κB kinase and inhibit the transportation of NF-κB to the nucleus. Hence, the suppression of the NF-κB signaling pathway may be responsible for the anti-inflammatory effect. These results show that bioactivity evaluation on the basis of transcriptome analysis may be effective in the functional exploration of natural products.
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Affiliation(s)
- Qi-Xuan Kuang
- State Key Laboratory of Characteristic Chinese Medicine Resources of Southwest China, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People's Republic of China
| | - Yan Luo
- School of Basic Medical Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People's Republic of China
| | - Li-Rong Lei
- State Key Laboratory of Characteristic Chinese Medicine Resources of Southwest China, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People's Republic of China
| | - Wen-Xiu Guo
- State Key Laboratory of Characteristic Chinese Medicine Resources of Southwest China, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People's Republic of China
| | - Xin-Ai Li
- State Key Laboratory of Characteristic Chinese Medicine Resources of Southwest China, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People's Republic of China
| | - Yu-Mei Wang
- School of Basic Medical Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People's Republic of China
| | - Xue-Yan Huo
- State Key Laboratory of Characteristic Chinese Medicine Resources of Southwest China, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People's Republic of China
| | - Meng-Dan Liu
- State Key Laboratory of Characteristic Chinese Medicine Resources of Southwest China, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People's Republic of China
| | - Qi Zhang
- State Key Laboratory of Characteristic Chinese Medicine Resources of Southwest China, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People's Republic of China
| | - Dan Feng
- Department of Natural Medicinal Chemistry and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao 266021, People's Republic of China
| | - Li-Jun Huang
- School of Basic Medical Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People's Republic of China
| | - Dong Wang
- School of Basic Medical Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People's Republic of China
| | - Yu-Cheng Gu
- Syngenta Jealott's Hill International Research Centre, Berkshire RG42 6EY, U.K
| | - Yun Deng
- State Key Laboratory of Characteristic Chinese Medicine Resources of Southwest China, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People's Republic of China
| | - Da-Le Guo
- State Key Laboratory of Characteristic Chinese Medicine Resources of Southwest China, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People's Republic of China
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5
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Fuentes-Pantoja FJ, Cordero-Vargas A. A Unified Strategy for the Synthesis of Natural Products Containing δ‐Hydroxy‐γ‐ Lactones through a Photoredox ATRA Reaction. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Francisco J. Fuentes-Pantoja
- Instituto de Quimica UNAM: Universidad Nacional Autonoma de Mexico Instituto de Quimica Química Orgánica Circuito exterior s/nCiudad Universitaria 04510 Mexico city MEXICO
| | - Alejandro Cordero-Vargas
- Universidad Nacional Autónoma de México Instituto de Química Circuito exterior s/nCiudad Universitaria, Coyoacán 04510 México, D.F., MEXICO
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Braun GH, Ramos HP, Candido ACBB, Pedroso RCN, Siqueira KA, Soares MA, Dias GM, Magalhães LG, Ambrósio SR, Januário AH, Pietro RCLR. Evaluation of antileishmanial activity of harzialactone a isolated from the marine-derived fungus Paecilomyces sp. Nat Prod Res 2021; 35:1644-1647. [PMID: 31140307 DOI: 10.1080/14786419.2019.1619725] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 04/30/2019] [Accepted: 05/12/2019] [Indexed: 10/26/2022]
Abstract
Fractionation of extracts from the culture broth of the marine-derived fungus, Paecilomyces sp. 7A22, resulted in the isolation of the harzialactone A (HA), a known compound previously isolated from fungi of marine environments. The chemical structure of HA was determined by spectroscopic analyses. Upon evaluation of HA on antileishmanial assays against Leishmania amazonensis, HA exhibited significant activity against promastigotes forms with IC50 of 5.25 µg mL-1 and moderate activity against intracellular amastigotes with IC50 of 18.18 µg mL-1. This is the first report on the antileishmanial activity of HA, and the effects of HA presented in this work suggest that this class of compounds are suitable for future biological in vitro and in vivo studies for the search of natural products with activity against Leishmania spp. Furthermore, the present results corroborate marine-derived fungi as a promising source of natural products with antiparasitic activity.
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Affiliation(s)
- Glaucia H Braun
- Faculdade de Ciências Farmacêuticas, UNESP - Univ. Estadual Paulista, Departamento de Fármacos e Medicamentos, Araraquara, SP, Brazil
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Franca, SP, Brazil
| | - Henrique P Ramos
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Franca, SP, Brazil
| | - Ana C B B Candido
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Franca, SP, Brazil
| | - Rita C N Pedroso
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Franca, SP, Brazil
| | - Kátia A Siqueira
- Departamento de Botânica e Ecologia, Instituto de Biociências, Universidade Federal de Mato Grosso, Cuiabá, Mato Grosso, Brazil
| | - Marcos A Soares
- Departamento de Botânica e Ecologia, Instituto de Biociências, Universidade Federal de Mato Grosso, Cuiabá, Mato Grosso, Brazil
| | - Gustavo M Dias
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, São Bernardo do Campo, SP, Brazil
| | - Lizandra G Magalhães
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Franca, SP, Brazil
| | - Sérgio R Ambrósio
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Franca, SP, Brazil
| | - Ana H Januário
- Núcleo de Pesquisas em Ciências Exatas e Tecnológicas, Universidade de Franca, Franca, SP, Brazil
| | - Rosemeire C L R Pietro
- Faculdade de Ciências Farmacêuticas, UNESP - Univ. Estadual Paulista, Departamento de Fármacos e Medicamentos, Araraquara, SP, Brazil
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Wu Z, Xie Z, Wu M, Li X, Li W, Ding W, She Z, Li C. New Antimicrobial Cyclopentenones from Nigrospora sphaerica ZMT05, a Fungus Derived from Oxya chinensis Thunber. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:5368-5372. [PMID: 29746771 DOI: 10.1021/acs.jafc.8b01376] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Six new cyclopentenone derivatives (+)-nigrosporione A (+)-1, (-)-nigrosporione A (-)-1, nigrosporione B (2), nigrosporione C (3), (+)-nigrosporione D (+)-4, and (-)-nigrosporione D (-)-4 were isolated from an endophytic fungus Nigrospora sphaerica ZMT05, collected from the rice grasshopper ( Oxya chinensis Thunberg), which is an insect pest in rice and which is also used as a food for people in some countries. Their planar and spatial structures were determined by spectroscopic analyses and eletronic circular dichroism (ECD) calculations. Compounds (+)-1, (-)-1, and 2 inhibited the plant pathogens Fusarium oxysporum, Colletotrichum musae, Penicillium italicum, and Fusarium graminearum, compounds 3 and (-)-4 inhibited F. oxysporum, C. musae, and P. italicum, and compound (+)-4 inhibited F. oxysporum, C. musae, and F. graminearum, showing antifungal activities stronger than triadimefon. Additionally, compounds (+)-1, (-)-1, 2, and 3 displayed moderate antibacterial activities against Staphyloccocus aureus and Escherichia coli.
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Affiliation(s)
- Zhihui Wu
- College of Materials and Energy , South China Agricultural University , Guangzhou 510642 , China
| | - Zihui Xie
- College of Materials and Energy , South China Agricultural University , Guangzhou 510642 , China
| | - Manlin Wu
- College of Materials and Energy , South China Agricultural University , Guangzhou 510642 , China
| | - Xiaoqi Li
- College of Materials and Energy , South China Agricultural University , Guangzhou 510642 , China
| | - Weilin Li
- College of Materials and Energy , South China Agricultural University , Guangzhou 510642 , China
| | - Weijia Ding
- College of Materials and Energy , South China Agricultural University , Guangzhou 510642 , China
| | - Zhigang She
- School of Chemistry and Chemical Engineering , Sun Yat-sen University , Guangzhou 510275 , China
| | - Chunyuan Li
- College of Materials and Energy , South China Agricultural University , Guangzhou 510642 , China
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Khomane NB, Patel JS, Shirsat PK, Mali PR, Meshram HM. Formal Synthesis of Angiopterlactone B via Enantioselective Reduction of Ketone with Daucus Carota Root. ChemistrySelect 2018. [DOI: 10.1002/slct.201703183] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Navnath B. Khomane
- Academy of Scientific and Innovative Research (AcSIR); New Delhi India
- Medicinal Chemistry and Biotechnology Division; CSIR-Indian Institute of Chemical Technology, Tarnaka; Hyderabad- 500007 India
| | - Javed S. Patel
- Academy of Scientific and Innovative Research (AcSIR); New Delhi India
- Natural Product Laboratory; CSIR-Indian Institute of Chemical Technology; Hyderabad- 500 007 India
| | - Prashishkumar K. Shirsat
- Academy of Scientific and Innovative Research (AcSIR); New Delhi India
- Medicinal Chemistry and Biotechnology Division; CSIR-Indian Institute of Chemical Technology, Tarnaka; Hyderabad- 500007 India
| | - Prakash R. Mali
- Academy of Scientific and Innovative Research (AcSIR); New Delhi India
- Medicinal Chemistry and Biotechnology Division; CSIR-Indian Institute of Chemical Technology, Tarnaka; Hyderabad- 500007 India
| | - Harshadas M. Meshram
- Academy of Scientific and Innovative Research (AcSIR); New Delhi India
- Medicinal Chemistry and Biotechnology Division; CSIR-Indian Institute of Chemical Technology, Tarnaka; Hyderabad- 500007 India
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Ayob FW, Simarani K. Endophytic filamentous fungi from a Catharanthus roseus: Identification and its hydrolytic enzymes. Saudi Pharm J 2016; 24:273-8. [PMID: 27275114 PMCID: PMC4881157 DOI: 10.1016/j.jsps.2016.04.019] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
This paper reported on the various filamentous fungi strains that were isolated from a wild grown Catharanthus roseus. Based on the morphological characteristics and molecular technique through a Polymerase Chain Reaction and DNA sequencing method using internal transcribed spacer (ITS), these fungi had been identified as a Colletotrichum sp., Macrophomina phaseolina, Nigrospora sphaerica and Fusarium solani. The ultrastructures of spores and hyphae were observed under a Scanning Electron Microscope. The hydrolytic enzyme test showed that all strains were positive in secreting cellulase. Colletotrichum sp. and F. solani strains also gave a positive result for amylase while only F. solani was capable to secrete protease. These fungi were putatively classified as endophytic fungi since they produced extracellular enzymes that allow them to penetrate plant cell walls and colonize with symbiotic properties.
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Affiliation(s)
- Farah Wahida Ayob
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Khanom Simarani
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
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Metwaly AM, Kadry HA, El-Hela AA, Mohammad AEI, Ma G, Cutler SJ, Ross SA. Nigrosphaerin A a new isochromene derivative from the endophytic fungus Nigrospora sphaerica. PHYTOCHEMISTRY LETTERS 2014; 7:1-5. [PMID: 27708743 PMCID: PMC5047436 DOI: 10.1016/j.phytol.2013.09.001] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Nigrosphaerin A, a new isochromene derivative (1), was isolated from the endophytic fungus Nigrospora sphaerica and chemically identified as 3-(3,4-dihydroxyphenyl)-4,6,8-trihydroxy-1H-isochromen-1-one-6-O-β-d-glucopyranoside. In addition nineteen known compounds (2-20) were isolated from the same fungus and chemically identified. Compounds (1-3, 5, and 7-16) were isolated for the first time from this fungus. In vitro antileukemic, antileishmanial, antifungal, antibacterial and antimalarial activities of (1-20) were examined. Compounds 5, 7, 9 and 10 showed good antileukemic activity against HL60 cells with IC50 values of 0.03, 0.39, 0.2 and 0.4 μg/mL, respectively and against K562 cells with IC50 values of 0.35, 0.35, 0.49 and 0.01 μg/mL, respectively. Compounds 3, 4 and 6 showed moderate antileishmanial activity with IC50 values of 30.2, 26.4 and 36.4 μg/ml, respectively. Compound 7 showed moderate antifungal activity against Cryptococcus neoformans with IC50 value of 14.8 μg/mL.
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Affiliation(s)
- Ahmed M. Metwaly
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
- Department of Pharmacognosy, Faculty of Pharmacy, University of Al-Azhar, Cairo, Egypt
| | - Hazem A. Kadry
- Department of Pharmacognosy, Faculty of Pharmacy, University of Al-Azhar, Cairo, Egypt
| | - Atef A. El-Hela
- Department of Pharmacognosy, Faculty of Pharmacy, University of Al-Azhar, Cairo, Egypt
| | | | - Guoyi Ma
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
| | - Stephen J. Cutler
- Department of Medicinal Chemistry, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
| | - Samir A. Ross
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
- Department of Pharmacognosy, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
- Corresponding author at: National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, MS 38677, USA. Tel.: +1 662 915 1031; fax: +1 662 915 7989. (S.A. Ross)
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11
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He L, Zhang S, Wu Y, Li Y. Synthesis of (−)-Harzialactone A from a Readily Accessible Epoxy Chiral Building Block. CHINESE J CHEM 2011. [DOI: 10.1002/cjoc.201100373] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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12
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13
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14
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Blunt JW, Copp BR, Munro MHG, Northcote PT, Prinsep MR. Marine natural products. Nat Prod Rep 2010; 28:196-268. [PMID: 21152619 DOI: 10.1039/c005001f] [Citation(s) in RCA: 343] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
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