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Abstract
AbstractAscomycetes belonging to the order Sordariales are a well-known reservoir of secondary metabolites with potential beneficial applications. Species of the Sordariales are ubiquitous, and they are commonly found in soils and in lignicolous, herbicolous, and coprophilous habitats. Some of their species have been used as model organisms in modern fungal biology or were found to be prolific producers of potentially useful secondary metabolites. However, the majority of sordarialean species are poorly studied. Traditionally, the classification of the Sordariales has been mainly based on morphology of the ascomata, ascospores, and asexual states, characters that have been demonstrated to be homoplastic by modern taxonomic studies based on multi-locus phylogeny. Herein, we summarize for the first time relevant information about the available knowledge on the secondary metabolites and the biological activities exerted by representatives of this fungal order, as well as a current outlook of the potential opportunities that the recent advances in omic tools could bring for the discovery of secondary metabolites in this order.
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Microbiota in Waterlogged Archaeological Wood: Use of Next-Generation Sequencing to Evaluate the Risk of Biodegradation. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10134636] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Waterlogged archaeological wood (WAW) is considered a precious material, first-hand account of past civilizations. Like any organic material, it is subjected to biodegradative action of microorganisms whose activity could be particularly fast and dangerous during the phases of excavation, storage and restoration. The present work aimed to characterize the microorganisms present in WAW during these tricky periods to evaluate the biological risk it is exposed to. The bacterial and fungal communities inhabiting woods coming from two archaeological sites (Pisa and Naples) were investigated through Next-Generation Sequencing (NGS). High-throughput sequencing of extracted DNA fragments was performed using the reversible terminator-based sequencing chemistry with the Illumina MiSeq platform. The analyses revealed that the two archaeological sites showed distinct richness and biodiversity, as expected. In all the WAWs, the bacterial community harbored mainly Proteobacteria, whereas Bacteroidetes was well represented only in Naples communities and taxa belonging to the phyla Chloroflexi only in the Pisa site. Concerning the fungal community, the two sites were dominated by different phyla: Ascomycota for Naples samples and Basidiomycota for Pisa. Interestingly, most of the identified bacterial and fungal taxa have cellulolytic or ligninolytic ability. These results provide new and useful background information concerning the composition of WAW microbiota and the threat it represents for this precious material.
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Andersen B, Phippen C, Frisvad JC, Emery S, Eustace RA. Fungal and chemical diversity in hay and wrapped haylage for equine feed. Mycotoxin Res 2019; 36:159-172. [DOI: 10.1007/s12550-019-00377-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 10/17/2019] [Accepted: 10/21/2019] [Indexed: 11/25/2022]
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Phukhamsakda C, Macabeo APG, Huch V, Cheng T, Hyde KD, Stadler M. Sparticolins A-G, Biologically Active Oxidized Spirodioxynaphthalene Derivatives from the Ascomycete Sparticola junci. JOURNAL OF NATURAL PRODUCTS 2019; 82:2878-2885. [PMID: 31599583 DOI: 10.1021/acs.jnatprod.9b00604] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
To explore the chemical diversity of metabolites from new species of Dothideomycetes, the ex-type strain of Sparticola junci was investigated. Seven highly oxygenated and functionalized spirodioxynaphthalene natural products incorporating carboxyalkylidene-cyclopentanoid (1-4), carboxyl-functionalized oxabicyclo[3.3.0]octane (5-6), and annelated 2-cyclopentenone/δ-lactone (7) units, sparticolins A-G, were isolated from submerged cultures of the fungus. Their chemical structures including their relative (and absolute) configurations were established through spectroscopic and X-ray crystallographic analyses. Sparticolin B (2) exhibited inhibitory activity against the Gram-positive bacteria Bacillus subtilis, Micrococcus luteus, and Staphylococcus aureus, while sparticolin G (7) showed antifungal activities against Schizosaccharomyces pombe and Mucor hiemalis. All other sparticolins were only weakly active against S. aureus and also showed weak activities against the nematode Caenorhabditis elegans. Compounds 2 and 7 also showed moderate cytotoxic activities against seven mammalian cell lines.
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Affiliation(s)
- Chayanard Phukhamsakda
- Center of Excellence in Fungal Research , Mae Fah Luang University , Chiang Rai 57100 , Thailand
| | - Allan Patrick G Macabeo
- Department of Microbial Drugs , Helmholtz Centre for Infection Research and German Centre for Infection Research (DZIF) , partner site Hannover/Braunschweig, Inhoffenstrasse 7 , 38124 Braunschweig , Germany
- Laboratory for Organic Reactivity, Discovery and Synthesis (LORDS), Research Center for the Natural and Applied Sciences , University of Santo Tomas , 1015 Manila , Philippines
| | - Volker Huch
- Institut für Anorganische Chemie , Universität des Saarlandes , Campus, Gebäude C 4.1, 66123 Saarbrücken , Germany
| | - Tian Cheng
- Department of Microbial Drugs , Helmholtz Centre for Infection Research and German Centre for Infection Research (DZIF) , partner site Hannover/Braunschweig, Inhoffenstrasse 7 , 38124 Braunschweig , Germany
| | - Kevin D Hyde
- Center of Excellence in Fungal Research , Mae Fah Luang University , Chiang Rai 57100 , Thailand
| | - Marc Stadler
- Department of Microbial Drugs , Helmholtz Centre for Infection Research and German Centre for Infection Research (DZIF) , partner site Hannover/Braunschweig, Inhoffenstrasse 7 , 38124 Braunschweig , Germany
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Bhardwaj M, Rasool F, Tatina MB, Mukherjee D. Construction of Fused Oxabicyclic Scaffolds from Glycals and Styrenes via One-Pot Domino Transformations. Org Lett 2019; 21:3038-3042. [PMID: 31013108 DOI: 10.1021/acs.orglett.9b00234] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Triflic acid catalyzed cascade stereoselective reaction of glycals with styrenes delivers complex oxabicyclic scaffolds such as cis-oxadecalins or cis-cyclopentanofurans simply by tweaking the solvent. In the presence of participating solvents like benzene/toluene, cascade Ferrier C-glycosylation and double Friedel-Crafts reaction leads to densely chiral benzo-fused oxadecalins, whereas in DCM, an unprecedented ring-opening, ring-closing sequence generated cis-cyclopentanofurans. An attempt has been made to explain the above cascade sequences via intermediate trapping, kinetic experiments, and Baldwin's rules.
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Affiliation(s)
- Monika Bhardwaj
- Natural Product Chemistry Division , Indian Institute of Integrative Medicine (IIIM) , Jammu 180001 , India
| | - Faheem Rasool
- Natural Product Chemistry Division , Indian Institute of Integrative Medicine (IIIM) , Jammu 180001 , India.,Academy of Scientific and Innovative Research (AcSIR-IIIM) , Jammu 180001 , India
| | - Madhu Babu Tatina
- Natural Product Chemistry Division , Indian Institute of Integrative Medicine (IIIM) , Jammu 180001 , India
| | - Debaraj Mukherjee
- Natural Product Chemistry Division , Indian Institute of Integrative Medicine (IIIM) , Jammu 180001 , India.,Academy of Scientific and Innovative Research (AcSIR-IIIM) , Jammu 180001 , India
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Riveira MJ, Quiroga GN, Mata EG, Gandon V, Mischne MP. Cycloisomerization of Conjugated Trienones and Isomeric 2H-Pyrans: Unified Strategy toward Cyclopenta[b]furans. J Org Chem 2015; 80:6515-9. [DOI: 10.1021/acs.joc.5b00818] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Martín J. Riveira
- Instituto
de Química Rosario-CONICET, Facultad de Ciencias Bioquímicas
y Farmacéuticas, Universidad Nacional de Rosario, Suipacha
531, 2000 Rosario, Santa Fe, Argentina
| | - Gastón N. Quiroga
- Instituto
de Química Rosario-CONICET, Facultad de Ciencias Bioquímicas
y Farmacéuticas, Universidad Nacional de Rosario, Suipacha
531, 2000 Rosario, Santa Fe, Argentina
| | - Ernesto G. Mata
- Instituto
de Química Rosario-CONICET, Facultad de Ciencias Bioquímicas
y Farmacéuticas, Universidad Nacional de Rosario, Suipacha
531, 2000 Rosario, Santa Fe, Argentina
| | - Vincent Gandon
- ICMMO
(UMR CNRS 8182), Université Paris-sud 11, 91405 Orsay Cedex, France
- Institut de Chimie
des Substances Naturelles, CNRS, Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
| | - Mirta P. Mischne
- Instituto
de Química Rosario-CONICET, Facultad de Ciencias Bioquímicas
y Farmacéuticas, Universidad Nacional de Rosario, Suipacha
531, 2000 Rosario, Santa Fe, Argentina
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Riveira MJ, Mischne MP. An Interrupted Vinylogous Iso-Nazarov Reaction: Cycloisomerization of Conjugated Trienones to Cyclopenta[b]furan Derivatives. J Org Chem 2014; 79:8244-54. [DOI: 10.1021/jo501453b] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Martín J. Riveira
- Instituto
de Química
Rosario-CONICET, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, 2000 Rosario, Santa Fe, Argentina
| | - Mirta P. Mischne
- Instituto
de Química
Rosario-CONICET, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, 2000 Rosario, Santa Fe, Argentina
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Bills GF, Gloer JB, An Z. Coprophilous fungi: antibiotic discovery and functions in an underexplored arena of microbial defensive mutualism. Curr Opin Microbiol 2013; 16:549-65. [DOI: 10.1016/j.mib.2013.08.001] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Revised: 08/01/2013] [Accepted: 08/06/2013] [Indexed: 01/24/2023]
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Li Y, Li CW, Cui CB, Liu XZ, Che YS. Cytosporinols A-C, new caryophyllene sesquiterpenoids from Cytospora sp. NATURAL PRODUCTS AND BIOPROSPECTING 2012; 2:70-75. [PMCID: PMC4131587 DOI: 10.1007/s13659-012-0018-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Accepted: 03/08/2012] [Indexed: 06/08/2023]
Abstract
Three new caryophyllene sesquiterpenoids, cytosporinols A-C (1–3), have been isolated from solid cultures of Cytospora sp. The structures of 1–3 were elucidated primarily by NMR spectroscopy, and 3 was further confirmed by X-ray crystallography. The absolute configurations of the C-11 secondary alcohol in 1 and the 6,8-diol moiety in 3 were deduced using the modified Mosher and Snatzke’s method, respectively. Compounds 2 and 3 showed moderate cytotoxicity against HeLa cells.
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Affiliation(s)
- Yan Li
- />Division of Natural Products Chemistry, Beijing Institute of Pharmacology & Toxicology, Beijing, 100850 China
| | - Chang-Wei Li
- />Division of Natural Products Chemistry, Beijing Institute of Pharmacology & Toxicology, Beijing, 100850 China
| | - Cheng-Bin Cui
- />Division of Natural Products Chemistry, Beijing Institute of Pharmacology & Toxicology, Beijing, 100850 China
| | - Xing-Zhong Liu
- />State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100190 China
| | - Yong-Sheng Che
- />Division of Natural Products Chemistry, Beijing Institute of Pharmacology & Toxicology, Beijing, 100850 China
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Kobayashi S, Kinoshita T, Kawamoto T, Wada M, Kuroda H, Masuyama A, Ryu I. Stereocontrolled synthesis of substituted bicyclic ethers through oxy-Favorskii rearrangement: total synthesis of (±)-communiol E. J Org Chem 2011; 76:7096-103. [PMID: 21786776 DOI: 10.1021/jo201064h] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The potential of the oxy-Favorskii rearrangement to form branched cis-fused bicyclic ethers was explored. Both tertiary and quaternary centers were constructed in highly stereospecific manners. Methanol and primary amines were effective nucleophiles for the rearrangement. The total synthesis of (±)-communiol E was achieved based on this method.
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Affiliation(s)
- Shoji Kobayashi
- Department of Applied Chemistry, Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Ohmiya, Asahi-ku, Osaka 535-8585, Japan.
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Slot JC, Rokas A. Horizontal transfer of a large and highly toxic secondary metabolic gene cluster between fungi. Curr Biol 2010; 21:134-9. [PMID: 21194949 DOI: 10.1016/j.cub.2010.12.020] [Citation(s) in RCA: 183] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2010] [Revised: 11/23/2010] [Accepted: 12/09/2010] [Indexed: 02/05/2023]
Abstract
Genes involved in intermediary and secondary metabolism in fungi are frequently physically linked or clustered. For example, in Aspergillus nidulans the entire pathway for the production of sterigmatocystin (ST), a highly toxic secondary metabolite and a precursor to the aflatoxins (AF), is located in a ∼54 kb, 23 gene cluster. We discovered that a complete ST gene cluster in Podospora anserina was horizontally transferred from Aspergillus. Phylogenetic analysis shows that most Podospora cluster genes are adjacent to or nested within Aspergillus cluster genes, although the two genera belong to different taxonomic classes. Furthermore, the Podospora cluster is highly conserved in content, sequence, and microsynteny with the Aspergillus ST/AF clusters and its intergenic regions contain 14 putative binding sites for AflR, the transcription factor required for activation of the ST/AF biosynthetic genes. Examination of ∼52,000 Podospora expressed sequence tags identified transcripts for 14 genes in the cluster, with several expressed at multiple life cycle stages. The presence of putative AflR-binding sites and the expression evidence for several cluster genes, coupled with the recent independent discovery of ST production in Podospora [1], suggest that this HGT event probably resulted in a functional cluster. Given the abundance of metabolic gene clusters in fungi, our finding that one of the largest known metabolic gene clusters moved intact between species suggests that such transfers might have significantly contributed to fungal metabolic diversity. PAPERFLICK:
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Affiliation(s)
- Jason C Slot
- Department of Biological Sciences, Vanderbilt University, Nashville, TN 37235, USA
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Hegazy MEF, Mohamed AEHH, Aoki N, Ikeuchi T, Ohta E, Ohta S. Bioactive jatrophane diterpenes from Euphorbia guyoniana. PHYTOCHEMISTRY 2010; 71:249-253. [PMID: 19900686 DOI: 10.1016/j.phytochem.2009.10.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2009] [Revised: 10/04/2009] [Accepted: 10/07/2009] [Indexed: 05/28/2023]
Abstract
Chromatographic investigation of the methylenechloride/methanol extract of the aerial parts of Euphorbia guyoniana afforded two jatrophane diterpenes, designated guyonianins E and F, in addition to a known jatrophane diterpene. The structures of the compounds were determined by comprehensive NMR analyses, including DEPT, COSY, HMQC, HMBC, NOESY and HRMS. These compounds exhibited cytotoxicity against human embryonic kidney 293 (HEK293) cells with IC(50) values of 35-100 microM.
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Hou XL, Yang Z, Yeung KS, Wong HN. Five–membered ring systems: furans and benzofurans. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/s0959-6380(07)80011-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
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Murga J, Falomir E, Carda M, Marco JA. The Stereoselective Synthesis of the Nonnatural Enantiomers of Communiols A-C. A Stereochemical Correction. Nat Prod Commun 2006. [DOI: 10.1177/1934578x0600100311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
A stereoselective synthesis of the nonnatural enantiomers of the fungal metabolites communiols A-C is reported. A stereochemical misassignment has been corrected and the absolute configurations of the natural products have been unambiguously established.
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Affiliation(s)
- Juan Murga
- Departamento de Química Inorgánica y Orgánica, Universidad Jaume I, Castellón, E-12080 Castellón, Spain
| | - Eva Falomir
- Departamento de Química Inorgánica y Orgánica, Universidad Jaume I, Castellón, E-12080 Castellón, Spain
| | - Miguel Carda
- Departamento de Química Inorgánica y Orgánica, Universidad Jaume I, Castellón, E-12080 Castellón, Spain
| | - J. Alberto Marco
- Departamento de Química Orgánica, Universiad de Valencia, E-46100 Burjassot, Valencia, Spain
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