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Talukdar S, Talukdar M, Buragohain M, Yadav A, Yadav RNS, Bora TC. Enhanced candicidal compound production by a new soil isolate Penicillium verruculosum MKH7 under submerged fermentation. BMC Microbiol 2016; 16:288. [PMID: 27938325 PMCID: PMC5225592 DOI: 10.1186/s12866-016-0713-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 05/19/2016] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Microorganisms are a rich source of structurally diverse secondary metabolites that exert a major impact on the control of infectious diseases and other medical conditions. The biosynthesis of these metabolites can be improved by manipulating the nutritional or environmental factors. This work evaluates the effects of fermentation parameters on the production of a lactone compound effective against Candida albicans by Penicillium verruculosum MKH7 under submerged fermentation. Design-Expert version8.0 software was used for construction of the experimental design and statistical analysis of the experimental data. RESULTS The important factors influencing antibiotic production selected in accordance with the Plackett-Burman design were found to be initial pH, temperature, peptone, MgSO4.7H2O. Orthogonal central composite design and response surface methodology were adopted to further investigate the mutual interaction between the variables and identify the optimum values that catalyse maximum metabolite production. The determination coefficient (R2) of the fitted second order model was 0.9852. The validation experiments using optimized conditions of initial pH 7.4, temperature 27 °C, peptone 9.2 g/l and MgSO4.7H2O 0.39 g/l resulted in a significant increase (almost 7 fold from 30 to 205.5 mg/l) in the metabolite production which was in agreement with the prediction (211.24 mg/l). Stability of the compound was also assessed on the basis of its response to physical and chemical stresses. CONCLUSIONS So far as our knowledge goes, till date there are no reports available on the production of antibiotics by Penicillium verruculosum through media optimization using RSM. Optimization not only led to a 7 fold increase in metabolite yield but the same was achieved at much lesser time (8-10 days compared to the earlier 12-15 days). The enhanced yield of the antibiotic strongly suggests that the fungus P. verruculosum MKH7 can be efficiently used for antibiotic production on a large scale.
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Affiliation(s)
- Shruti Talukdar
- Biotechnology Division, CSIR-North-East Institute of Science & Technology, Jorhat, 785006, Assam, India
| | - Madhumita Talukdar
- Biotechnology Division, CSIR-North-East Institute of Science & Technology, Jorhat, 785006, Assam, India
| | - Manorama Buragohain
- Biotechnology Division, CSIR-North-East Institute of Science & Technology, Jorhat, 785006, Assam, India
| | - Archana Yadav
- Biotechnology Division, CSIR-North-East Institute of Science & Technology, Jorhat, 785006, Assam, India
| | - R N S Yadav
- Department of Life Sciences, Dibrugarh University, Dibrugarh, 786004, Assam, India
| | - T C Bora
- Biotechnology Division, CSIR-North-East Institute of Science & Technology, Jorhat, 785006, Assam, India.
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Imhoff JF. Natural Products from Marine Fungi--Still an Underrepresented Resource. Mar Drugs 2016; 14:19. [PMID: 26784209 PMCID: PMC4728516 DOI: 10.3390/md14010019] [Citation(s) in RCA: 140] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 12/28/2015] [Accepted: 01/12/2016] [Indexed: 01/03/2023] Open
Abstract
Marine fungi represent a huge potential for new natural products and an increased number of new metabolites have become known over the past years, while much of the hidden potential still needs to be uncovered. Representative examples of biodiversity studies of marine fungi and of natural products from a diverse selection of marine fungi from the author's lab are highlighting important aspects of this research. If one considers the huge phylogenetic diversity of marine fungi and their almost ubiquitous distribution, and realizes that most of the published work on secondary metabolites of marine fungi has focused on just a few genera, strictly speaking Penicillium, Aspergillus and maybe also Fusarium and Cladosporium, the diversity of marine fungi is not adequately represented in investigations on their secondary metabolites and the less studied species deserve special attention. In addition to results on recently discovered new secondary metabolites of Penicillium species, the diversity of fungi in selected marine habitats is highlighted and examples of groups of secondary metabolites produced by representatives of a variety of different genera and their bioactivities are presented. Special focus is given to the production of groups of derivatives of metabolites by the fungi and to significant differences in biological activities due to small structural changes.
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Affiliation(s)
- Johannes F Imhoff
- GEOMAR Helmholtz Centre for Ocean Research Kiel, 24105 Kiel, Germany.
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Five new Talaromyces species with ampulliform-like phialides and globose rough walled conidia resembling T. verruculosus. MYCOSCIENCE 2015. [DOI: 10.1016/j.myc.2015.02.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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He JW, Mu ZQ, Gao H, Chen GD, Zhao Q, Hu D, Sun JZ, Li XX, Li Y, Liu XZ, Yao XS. New polyesters from Talaromyces flavus. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.02.060] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Abstract
The genus Talaromyces was described by Benjamin in 1955 as a sexual state of Penicillium that produces soft walled ascomata covered with interwoven hyphae. Phylogenetic information revealed that Penicillium subgenus Biverticillium and Talaromyces form a monophyletic clade distinct from the other Penicillium subgenera. Subsequently, in combination with the recent adoption of the one fungus one name concept, Penicillium subgenus Biverticillium was transferred to Talaromyces. At the time, the new combinations were made based only on phylogenetic information. As such, the aim of this study was to provide a monograph on Talaromyces applying a polyphasic species concept, including morphological, molecular and physiological characters. Based on an ITS, BenA and RPB2 multigene phylogeny, we propose a new sectional classification for the genus, placing the 88 accepted species into seven sections, named sections Bacillispori, Helici, Islandici, Purpurei, Subinflati, Talaromyces and Trachyspermi. We provide morphological descriptions for each of these species, as well as notes on their identification using morphology and DNA sequences. For molecular identification, BenA is proposed as a secondary molecular marker to the accepted ITS barcode for fungi.
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Affiliation(s)
- N. Yilmaz
- CBS-KNAW Fungal Biodiversity Centre, 3508 AD, Utrecht, The Netherlands
- Department of Biology, Utrecht University, Utrecht, The Netherlands
| | - C.M. Visagie
- CBS-KNAW Fungal Biodiversity Centre, 3508 AD, Utrecht, The Netherlands
| | - J. Houbraken
- CBS-KNAW Fungal Biodiversity Centre, 3508 AD, Utrecht, The Netherlands
| | - J.C. Frisvad
- Center for Microbial Biotechnology, Department of Systems Biology, Building 221, Technical University of Denmark, DK-2800, Kgs. Lyngby, Denmark
| | - R.A. Samson
- CBS-KNAW Fungal Biodiversity Centre, 3508 AD, Utrecht, The Netherlands
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Cimmino A, Andolfi A, Zonno MC, Avolio F, Berestetskiy A, Vurro M, Evidente A. Chenopodolans A-C: phytotoxic furopyrans produced by Phoma chenopodiicola, a fungal pathogen of Chenopodium album. PHYTOCHEMISTRY 2013; 96:208-213. [PMID: 24211132 DOI: 10.1016/j.phytochem.2013.10.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Revised: 09/25/2013] [Accepted: 10/09/2013] [Indexed: 06/02/2023]
Abstract
Three tetrasubstituted furopyrans, named chenopodolans A-C, were isolated together with the well known fungal metabolite (-)-(R)-6-hydroxymellein from the liquid culture of Phoma chenopodiicola, a fungal pathogen proposed for the biological control of Chenopodium album, a common worldwide weed of arable crops. The structures of chenopodolans A-C were established by spectroscopic and chemical methods as 2-(3-methoxy-2,6-dimethyl-7aH-furo[2,3-b]pyran-4-yl)-butane-2,3-diol, 1-(3-methoxy-2,6-dimethyl-7aH-furo[2,3-b]pyran-4-yl)ethanol and 3-methoxy-2,6-dimethyl-4-(1-methylpropenyl)-7aH-furo[2,3-b]pyran, respectively. The absolute configuration R to the hydroxylated secondary carbon (C-11) of the side chain at C-4 of chenopodolan A was determined by applying an advanced Mosher's method. Assayed by leaf puncture on host and non-host weeds chenopodolans A and B, and the 11-O-acetylchenopodolan A showed a strong phytotoxicity. These results showed that the nature of the side chain attached to C-4 is an important feature for the phytotoxicity. A weak zootoxic activity was only showed by chenopodolan B.
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Affiliation(s)
- Alessio Cimmino
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy
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Silber J, Ohlendorf B, Labes A, Erhard A, Imhoff JF. Calcarides A-E, antibacterial macrocyclic and linear polyesters from a Calcarisporium strain. Mar Drugs 2013; 11:3309-23. [PMID: 23994907 PMCID: PMC3801122 DOI: 10.3390/md11093309] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Revised: 08/16/2013] [Accepted: 08/21/2013] [Indexed: 01/20/2023] Open
Abstract
Bioactive compounds were detected in crude extracts of the fungus, Calcarisporium sp. KF525, which was isolated from German Wadden Sea water samples. Purification of the metabolites from the extracts yielded the five known polyesters, 15G256α, α-2, β, β-2 and π (1–5), and five new derivatives thereof, named calcarides A–E (6–10). The chemical structures of the isolated compounds were elucidated on the basis of one- and two-dimensional NMR spectroscopy supported by UV and HRESIMS data. The compounds exhibited inhibitory activities against Staphylococcus epidermidis, Xanthomonas campestris and Propionibacterium acnes. As the antibacterial activities were highly specific with regard to compound and test strain, a tight structure-activity relationship is assumed.
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Affiliation(s)
| | | | | | | | - Johannes F. Imhoff
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +49-431-600-4450; Fax: +49-431-600-4452
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Gao H, Zhou L, Li D, Gu Q, Zhu TJ. New Cytotoxic Metabolites from the Marine-Derived FungusPenicilliumsp. ZLN29. Helv Chim Acta 2013. [DOI: 10.1002/hlca.201200596] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Williams AL, Dandepally SR, Gilyazova N, Witherspoon SM, Ibeanu G. Microwave-assisted synthesis of 4-chloro-N-(naphthalen-1-ylmethyl)-5-(3-(piperazin-1-yl)phenoxy)thiophene-2-sulfonamide (B-355252): a new potentiator of Nerve Growth Factor (NGF)-induced neurite outgrowth. Tetrahedron 2010; 66:9577-9581. [PMID: 22973068 PMCID: PMC3437539 DOI: 10.1016/j.tet.2010.09.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The synthesis of 4-chloro-N-(naphthalen-1-ylmethyl)-5-(3-(piperazin-1-yl)phenoxy)thiophene-2-sulfonamide (B-355252) using a MW-assisted nucleophilic aromatic substitution (S(N)Ar) reaction will be discussed. Utilization of this method allowed for the rapid generation of B-355252 heteroaryl ether core structure in the presence of cesium carbonate in dimethylformamide or tripotassium phosphate in N-methyl-2-pyrrolidone in 94% yield. Evaluation of B-355252 enhancement of nerve growth factor's ability to stimulate neurite outgrowths was determined using NS-1 cells.
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Affiliation(s)
- Alfred L Williams
- Department of Pharmaceutical Sciences, North Carolina Central University, Durham, NC, 27707 USA 2
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Islam MS, Ishigami K, Watanabe H. Synthesis of (−)-mellein, (+)-ramulosin, and related natural products. Tetrahedron 2007. [DOI: 10.1016/j.tet.2006.11.068] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Schlingmann G, Milne L, Carter G. Isolation and identification of antifungal polyesters from the marine fungus Hypoxylon oceanicum LL-15G256. Tetrahedron 2002. [DOI: 10.1016/s0040-4020(02)00746-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Marine Fungal Substances. ACTA ACUST UNITED AC 2000. [DOI: 10.1016/s1572-5995(00)80059-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Oxidation of 3-arylisochromans by dimethyldioxirane. An easy route to substituted 3-arylisocoumarins. Tetrahedron 1999. [DOI: 10.1016/s0040-4020(99)00917-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Hill DC, Wrigley SK, Nisbet LJ. Novel screen methodologies for identification of new microbial metabolites with pharmacological activity. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 1998; 59:73-121. [PMID: 9435461 DOI: 10.1007/bfb0102297] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Micro-organisms continue to provide an important source of chemical diversity for the discovery of compounds with new biological activities. Microbial metabolites discovered recently using assays to detect compounds with potential pharmacological utility are surveyed and found to represent an extensive range of structural types produced by a wide variety of organisms. Assays used for screening samples produced by microbial processes must be robust, sensitive and specific and able to operate above a background of potential interferences from a number of sources. Discovery assays currently in use fall into three main categories cell-based, receptor-ligand interaction and enzyme inhibition assays. Trends in the use of these assays and new developments in assay technology applicable to the screening of microbial samples are examined with particular reference to the high throughput screening environment. For microbial screening to be a competitive route to new drug leads, the disciplines involved must be engineered into a seamlessly integrated process to deliver novel compounds with the required biological properties rapidly.
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Biabani MAF, Laatsch H. Advances in chemical studies on low-molecular weight metabolites of marine fungi. ACTA ACUST UNITED AC 1998. [DOI: 10.1002/prac.19983400702] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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16
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Seebach D, Poenaru S, Folkers G, Rognan D. Synthesis of Oligo(3-hydroxybutanoate)(OHB)-Containing Peptides with High Binding Affinity to a Class-I-MHC Protein. Helv Chim Acta 1998. [DOI: 10.1002/hlca.19980810529] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Bernan VS, Greenstein M, Maiese WM. Marine microorganisms as a source of new natural products. ADVANCES IN APPLIED MICROBIOLOGY 1997; 43:57-90. [PMID: 9097412 DOI: 10.1016/s0065-2164(08)70223-5] [Citation(s) in RCA: 90] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Over the past decade, marine microorganisms have become recognized as an important and untapped resource for novel bioactive compounds. The oceans cover greater than 70% of the earth's surface and, taking this into account by volume, represent better than 95% of the biosphere. Given this fact, the oceans present themselves as an unexplored area of opportunity for the discovery of pharmacologically active compounds. In this review, data have been presented to illustrate the diversity of microorganisms living in the sea and the plethora of chemical compounds that have been discovered from them. However, it is important to pursue basic research on the marine environment in order to permit the continued isolation of unique microorganisms. There is still limited knowledge of the physiological requirements of most marine microorganisms, and a greater understanding of their conditions for growth will offer new insights into the complex world of marine microbiology. Clearly, a greater investment in the development of marine biotechnology will produce novel compounds that may contribute significantly toward drug development over the next decade.
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Affiliation(s)
- V S Bernan
- Wyeth-Ayerst Research, Natural Products Research, Pearl River, New York 10965, USA
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