1
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Cueva-Clavijo RI, Téllez-Téllez M, Aguilar-Marcelino L, Wong-Villarreal A, Acosta-Urdapilleta MDL, Castañeda-Ramírez GS, Montañez-Palma LF, Hernández-Núñez E. Evaluation of Ointments with Daldinia eschscholtzii in Wound Healing in an In Vivo Model. J Med Food 2024; 27:681-691. [PMID: 39018055 DOI: 10.1089/jmf.2023.0008] [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] [Indexed: 07/18/2024] Open
Abstract
Fungi are a source of a variety of secondary metabolites of importance in different areas of biotechnology. Several compounds have been characterized with antioxidant, antimicrobial, and anti-inflammatory activity from fungi of the division of the Ascomycota, among which is the species Daldinia eschscholtzii, an endophyte fungus of pantropical distribution. In this study, we evaluated the effect of an ointment made with D. eschscholtzii on the wound healing of BALB/c mice. The species was corroborated using a molecular marker Internal Transcribed Spacer (ITS1 and ITS4). The extracts and dust of the fungus were considered nontoxic as they caused a mortality of <15% in the nematode Panagrellus redivivus, and experimental ointments had no adverse effects on the skin of BALB/c mice. Wounds treated with the D. eschscholtzii ointments had 99.9-100% wound contraction after 17 days, which was similar to commercial healing (positive control). As such, the ointment of D. eschscholtzii is a natural alternative to improve wound healing.
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Affiliation(s)
- Reina Isabel Cueva-Clavijo
- Master's Degree in Natural Resource Management, Biological Research Center of the Autonomous University of the State of Morelos, Cuernavaca, Mexico
| | - Maura Téllez-Téllez
- Biological Research Center of the Autonomous University of the State of Morelos, Cuernavaca, México
| | | | | | | | | | | | - Emanuel Hernández-Núñez
- Departamento de Recursos del Mar, Centro de Investigación y Estudios Avanzados-Unidad Mérida, Mérida, México
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2
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Phutthacharoen K, Toshe R, Khalid SJ, Llanos-López NA, Wennrich JP, Schrey H, Ebada SS, Hyde KD, Stadler M. Lachnuoic Acids A-F: Ambuic Acid Congeners from a Saprotrophic Lachnum Species. Chem Biodivers 2024; 21:e202400385. [PMID: 38421379 DOI: 10.1002/cbdv.202400385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 02/28/2024] [Accepted: 02/29/2024] [Indexed: 03/02/2024]
Abstract
Chemical prospection of an extract derived from a saprotrophic fungus Lachnum sp. IW157 resulted in the isolation and characterization of six unprecedentedly reported ambuic acid analogues named lachnuoic acids A-F (1-6). Chemical structures of 1-6 were determined based on comprehensive 1D and 2D NMR spectroscopic analyses together with HR-ESI-MS spectrometry. The relative configurations of 1-3 were defined by ROESY spectroscopic analyses while their absolute configurations were unambiguously determined by Mosher's esters method. All isolated compounds were subjected to cytotoxic, antimicrobial, antibiofilm and nematicidal activity assays where only lachnuoic acid A (1) revealed potent antimicrobial activity against Staphylococcus aureus and Bacillus subtilis at MIC values of 16.6 and 8.3 μg/mL, respectively.
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Affiliation(s)
- Kunthida Phutthacharoen
- Department of Microbial Drugs, Helmholtz Centre for Infection Research GmbH (HZI), Inhoffenstraße 7, 38124, Braunschweig, Germany
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, 57100, Thailand
| | - Rita Toshe
- Department of Microbial Drugs, Helmholtz Centre for Infection Research GmbH (HZI), Inhoffenstraße 7, 38124, Braunschweig, Germany
- Institute of Microbiology, Technische Universität Braunschweig, Spielmannstraße 7, 38106, Braunschweig, Germany
| | - Syeda J Khalid
- Department of Microbial Drugs, Helmholtz Centre for Infection Research GmbH (HZI), Inhoffenstraße 7, 38124, Braunschweig, Germany
- Institute of Microbiology, Technische Universität Braunschweig, Spielmannstraße 7, 38106, Braunschweig, Germany
| | - Natalia A Llanos-López
- Department of Microbial Drugs, Helmholtz Centre for Infection Research GmbH (HZI), Inhoffenstraße 7, 38124, Braunschweig, Germany
- Institute of Microbiology, Technische Universität Braunschweig, Spielmannstraße 7, 38106, Braunschweig, Germany
| | - Jan-Peer Wennrich
- Department of Microbial Drugs, Helmholtz Centre for Infection Research GmbH (HZI), Inhoffenstraße 7, 38124, Braunschweig, Germany
- Institute of Microbiology, Technische Universität Braunschweig, Spielmannstraße 7, 38106, Braunschweig, Germany
| | - Hedda Schrey
- Department of Microbial Drugs, Helmholtz Centre for Infection Research GmbH (HZI), Inhoffenstraße 7, 38124, Braunschweig, Germany
- Institute of Microbiology, Technische Universität Braunschweig, Spielmannstraße 7, 38106, Braunschweig, Germany
| | - Sherif S Ebada
- Department of Microbial Drugs, Helmholtz Centre for Infection Research GmbH (HZI), Inhoffenstraße 7, 38124, Braunschweig, Germany
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, 11566, Cairo, Egypt
| | - Kevin D Hyde
- Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, 57100, Thailand
- School of Science, Mae Fah Luang University, Chiang Rai, 57100, Thailand
| | - Marc Stadler
- Department of Microbial Drugs, Helmholtz Centre for Infection Research GmbH (HZI), Inhoffenstraße 7, 38124, Braunschweig, Germany
- Institute of Microbiology, Technische Universität Braunschweig, Spielmannstraße 7, 38106, Braunschweig, Germany
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3
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Salim AA, Butler MS, Blaskovich MAT, Henderson IR, Capon RJ. Natural products as anthelmintics: safeguarding animal health. Nat Prod Rep 2023; 40:1754-1808. [PMID: 37555325 DOI: 10.1039/d3np00019b] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2023]
Abstract
Covering literature to December 2022This review provides a comprehensive account of all natural products (500 compounds, including 17 semi-synthetic derivatives) described in the primary literature up to December 2022, reported to be capable of inhibiting the egg hatching, motility, larval development and/or the survival of helminths (i.e., nematodes, flukes and tapeworms). These parasitic worms infect and compromise the health and welfare, productivity and lives of commercial livestock (i.e., sheep, cattle, horses, pigs, poultry and fish), companion animals (i.e., dogs and cats) and other high value, endangered and/or exotic animals. Attention is given to chemical structures, as well as source organisms and anthelmintic properties, including the nature of bioassay target species, in vivo animal hosts, and measures of potency.
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Affiliation(s)
- Angela A Salim
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Australia, 4072.
| | - Mark S Butler
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Australia, 4072.
| | - Mark A T Blaskovich
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Australia, 4072.
| | - Ian R Henderson
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Australia, 4072.
| | - Robert J Capon
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Australia, 4072.
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4
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Phutthacharoen K, Khalid SJ, Schrey H, Hyde KD, Stadler M, Ebada SS. Diaporphasines E and F: New Polyketides from the Saprotrophic Fungus Lachnum sp. IW157 Growing on the Reed Grass Phragmites communis. ACS OMEGA 2023; 8:41689-41695. [PMID: 37970032 PMCID: PMC10633876 DOI: 10.1021/acsomega.3c05984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 09/21/2023] [Accepted: 10/17/2023] [Indexed: 11/17/2023]
Abstract
Chemical investigation for the mycelial extract of a saprotrophic fungus Lachnum sp. IW157 growing on the common reed grass Phragmites communis afforded the identification of two polyketide metabolites diaporphasines E (1) and F (2). Chemical structures of isolated compounds were unambiguously elucidated based on extensive 1D and 2D NMR spectral analyses in addition to their high-resolution mass spectrometry. The isolated compounds were assessed for their cytotoxicity and antimicrobial and biofilm inhibitory activities. While compound 1 revealed potent cytotoxicity against the tested cell lines L929 and KB3.1 with IC50 values of 0.9 and 3.7 μM, respectively, compound 2 exhibited moderate effects on the formation of S. aureus biofilms at 31.25 μg/mL.
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Affiliation(s)
- Kunthida Phutthacharoen
- Department
of Microbial Drugs, Helmholtz Centre for
Infection Research GmbH (HZI), Inhoffenstraße 7, Braunschweig 38124, Germany
- Center
of Excellence in Fungal Research, Mae Fah
Luang University, Chiang
Rai 57100, Thailand
- School
of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Syeda J. Khalid
- Department
of Microbial Drugs, Helmholtz Centre for
Infection Research GmbH (HZI), Inhoffenstraße 7, Braunschweig 38124, Germany
- Institute
of Microbiology, Technische Universität
Braunschweig, Spielmannstraße
7, Braunschweig 38106, Germany
| | - Hedda Schrey
- Department
of Microbial Drugs, Helmholtz Centre for
Infection Research GmbH (HZI), Inhoffenstraße 7, Braunschweig 38124, Germany
- Institute
of Microbiology, Technische Universität
Braunschweig, Spielmannstraße
7, Braunschweig 38106, Germany
| | - Kevin D. Hyde
- Center
of Excellence in Fungal Research, Mae Fah
Luang University, Chiang
Rai 57100, Thailand
- School
of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand
| | - Marc Stadler
- Department
of Microbial Drugs, Helmholtz Centre for
Infection Research GmbH (HZI), Inhoffenstraße 7, Braunschweig 38124, Germany
- Institute
of Microbiology, Technische Universität
Braunschweig, Spielmannstraße
7, Braunschweig 38106, Germany
| | - Sherif S. Ebada
- Department
of Microbial Drugs, Helmholtz Centre for
Infection Research GmbH (HZI), Inhoffenstraße 7, Braunschweig 38124, Germany
- Department
of Pharmacognosy, Faculty of Pharmacy, Ain
Shams University, Cairo 11566, Egypt
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5
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Zhang H, Yang Z, Jiang Z, Zhang X, Nizamani MM, Wu Y, Wei S, Wang Y, Xie X. Diversity of Fungi Isolated from Potato Nematode Cysts in Guizhou Province, China. J Fungi (Basel) 2023; 9:247. [PMID: 36836361 PMCID: PMC9965506 DOI: 10.3390/jof9020247] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 02/02/2023] [Accepted: 02/09/2023] [Indexed: 02/15/2023] Open
Abstract
Potatoes rank third in terms of human consumption after rice and wheat. Globodera spp. are significant pests of potato crop worldwide. Globodera rostochiensis was found in Weining County, Guizhou Province, China, in 2019. We collected soil from the rhizosphere zone from infected potato plants and separated mature cysts through simple floatation and sieving methods. The selected cysts were surface-sterilized, and the colonized fungi were isolated and purified. At the same time, the preliminary identification of fungi and fungi parasites on the cysts of nematodes was carried out. This study aimed to define the species and frequency of fungi-colonizing cysts of G. rostochiensis collected from Weining County, Guizhou Province, China, and provide a basis for the control of G. rostochiensis. As a result, 139 strains of colonized fungi were successfully isolated. Multigene analyses showed that these isolates included 11 orders, 17 families, and 23 genera. The genera Fusarium (with a separation frequency of 59%), Penicillium (11%), Edenia (3.6%), and Paraphaeosphaeria (3.6%) were the most frequently occurring. Among the 44 strains, 27 had a colonization rate of 100% on the cysts of G. rostochiensis. Meanwhile, the functional annotation of 23 genera indicated that some fungi have multitrophic lifestyles combining endophytic, pathogenic, and saprophytic behavior. In conclusion, this study showed the species composition and lifestyle diversity of colonized fungi from G. rostochiensis and demonstrated these isolates as potential sources of biocontrol agents. Colonized fungi were isolated from G. rostochiensis for the first time in China, and the taxonomic diversity of fungi from G. rostochiensis was clarified.
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Affiliation(s)
- Hui Zhang
- Department of Plant Pathology, College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Zaifu Yang
- Department of Plant Pathology, College of Agriculture, Guizhou University, Guiyang 550025, China
- Vegetable Research Academy, Guizhou University, Guiyang, 550025, China
| | - Zhaochun Jiang
- Guizhou Station of Plant Protection and Quarantine, Guiyang, 550001, China
| | - Xinyue Zhang
- Department of Plant Pathology, College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Mir Muhammad Nizamani
- Department of Plant Pathology, College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Yan Wu
- Department of Plant Pathology, College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Shan Wei
- Department of Plant Pathology, College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Yong Wang
- Department of Plant Pathology, College of Agriculture, Guizhou University, Guiyang 550025, China
| | - Xin Xie
- Department of Plant Pathology, College of Agriculture, Guizhou University, Guiyang 550025, China
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6
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Bhat AA, Shakeel A, Waqar S, Handoo ZA, Khan AA. Microbes vs. Nematodes: Insights into Biocontrol through Antagonistic Organisms to Control Root-Knot Nematodes. PLANTS (BASEL, SWITZERLAND) 2023; 12:451. [PMID: 36771535 PMCID: PMC9919851 DOI: 10.3390/plants12030451] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/09/2023] [Accepted: 01/16/2023] [Indexed: 06/18/2023]
Abstract
Root-knot nematodes (Meloidogyne spp.) are sedentary endoparasites that cause severe economic losses to agricultural crops globally. Due to the regulations of the European Union on the application of nematicides, it is crucial now to discover eco-friendly control strategies for nematode management. Biocontrol is one such safe and reliable method for managing these polyphagous nematodes. Biocontrol agents not only control these parasitic nematodes but also improve plant growth and induce systemic resistance in plants against a variety of biotic stresses. A wide range of organisms such as bacteria, fungi, viruses, and protozoans live in their natural mode as nematode antagonists. Various review articles have discussed the role of biocontrol in nematode management in general, but a specific review on biocontrol of root-knot nematodes is not available in detail. This review, therefore, focuses on the biocontrol of root-knot nematodes by discussing their important known antagonists, modes of action, and interactions.
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Affiliation(s)
- Adil Ameen Bhat
- Section of Environmental Botany and Plant Pathology, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, India
| | - Adnan Shakeel
- Section of Environmental Botany and Plant Pathology, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, India
| | - Sonia Waqar
- Section of Environmental Botany and Plant Pathology, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, India
| | - Zafar Ahmad Handoo
- Mycology and Nematology Genetic Diversity and Biology Laboratory, USDA, ARS, Northeast Area, 10300 Baltimore Avenue, Beltsville, MD 20705, USA
| | - Abrar Ahmed Khan
- Section of Environmental Botany and Plant Pathology, Faculty of Life Sciences, Aligarh Muslim University, Aligarh 202002, India
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7
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Starr AM, Zabet-Moghaddam M, San Francisco M. Identification of a novel secreted metabolite cyclo(phenylalanyl-prolyl) from Batrachochytrium dendrobatidis and its effect on Galleria mellonella. BMC Microbiol 2022; 22:293. [PMID: 36482304 PMCID: PMC9730576 DOI: 10.1186/s12866-022-02680-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 10/26/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND The fungus, Batrachochytrium dendrobatidis, is the causative agent of chytridiomycosis and a leading cause of global decline in amphibian populations. The first stages of chytridiomycosis include: inflammation, hyperkeratosis, lethargy, loss of righting reflex, and disruption of internal electrolyte levels leading to eventual death of the host. Previous work indicates that B. dendrobatidis can produce immunomodulatory compounds and other secreted molecules that regulate the growth of the fungus. In this study, filtrates of the fungus grown in media and water were subjected to ultra-performance liquid chromatography-mass spectrometry and analyzed using Compound Discoverer 3.0. RESULTS Identification of cyclo(phenylalanyl-prolyl), chitobiose, and S-adenosylmethionine were verified by their retention times and fragmentation patterns from B. dendrobatidis supernatants. Previous studies have analyzed the effects of B. dendrobatidis on amphibian models, in vitro, or in cell culture. We studied the effects of live B. dendrobatidis cells, spent culture filtrates containing secreted metabolites, and cyclo(pheylalanyl-prolyl) on wax moth larvae (Galleria mellonella). Concentrated filtrates caused melanization within 24 h, while live B. dendrobatidis caused melanization within 48 h. CONCLUSIONS Here we show B. dendrobatidis produces secreted metabolites previously unreported. The impacts of these chemicals were tested on an alternate non-amphibian model system that has been used for other fungi to study pathogenicity traits in this fungus.
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Affiliation(s)
- Amanda M. Starr
- grid.462127.4Bryant & Stratton College, 8141 Hull Street Road, Richmond, VA 23235 USA ,grid.264784.b0000 0001 2186 7496Department of Biological Sciences, Texas Tech University, Lubbock, TX 79409-3131 USA
| | | | - Michael San Francisco
- grid.264784.b0000 0001 2186 7496Department of Biological Sciences, Texas Tech University, Lubbock, TX 79409-3131 USA
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8
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Evidente A. Microbial and Plant Derived Low Risk Pesticides Having Nematocidal Activity. Toxins (Basel) 2022; 14:toxins14120849. [PMID: 36548747 PMCID: PMC9787815 DOI: 10.3390/toxins14120849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 11/25/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022] Open
Abstract
Microorganisms, virus, weeds, parasitic plants, insects, and nematodes are among the enemies that induce severe economic losses to agrarian production. Farmers have been forced to combat these enemies using different methods, including mechanical and agronomic strategies, since the beginning of agriculture. The development of agriculture, due to an increased request for food production, which is a consequence to the rapid and noteworthy growth of the world's population, requires the use of more efficient methods to strongly elevate the yield production. Thus, in the last five-to-six decades, a massive and extensive use of chemicals has occurred in agriculture, resulting in heavy negative consequences, such as the increase in environmental pollution and risks for human and animal health. These problems increased with the repetition of treatments, which is due to resistance that natural enemies developed against this massive use of pesticides. There are new control strategies under investigation to develop products, namely biopesticides, with high efficacy and selectivity but based on natural products which are not toxic, and which are biodegradable in a short time. This review is focused on the microbial and plant metabolites with nematocidal activity with potential applications in suitable formulations in greenhouses and fields.
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Affiliation(s)
- Antonio Evidente
- Department of Chemical Science, University of Naples Federico II, Complesso Universitario Monte S. Angelo, Via Cinthia 4, 80126 Naples, Italy;
- Institute of Sciences of Food Production, National Research Council, Via Amendola 122/O, 70125 Bari, Italy
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9
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Gives PMD, Rodríguez-Labastida M, Olmedo-Juárez A, Gamboa-Angulo MM, Reyes-Estebanez M. A Nematode Crude Extract Acts as an Elicitor of the Nematocidal Activity of Nematophagous Fungi Liquid Culture Filtrates Against Haemonchus contortus (Nematoda: Trichostrongylidae). Acta Parasitol 2022; 67:678-686. [PMID: 35013941 DOI: 10.1007/s11686-021-00502-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 11/25/2021] [Indexed: 11/27/2022]
Abstract
AIM This study was designed to investigate if culturing nematophagous fungi (NF) in the presence of a Haemonchus contortus larva crude extract (HcCE) enhances the nematocidal activity of nematophagous fungi liquid culture filtrates (NFCF). MATERIALS AND METHODS Four NF Arthrobotrys oligospora, A. musiformis, Duddingtonia flagrans and Clonostachys rosea were cultured in flasks (n = 5) containing Czapek-Dox broth medium (CDB) in the presence or absence of HcCE. NFCF recovered by filtration of each fungus (200 mg/mL) were assessed on H. contortus infective larvae (L3) using 96-well micro-titer plates (n = 4). Additionally, CDB and water were considered negative controls, while Ivermectin acted as a positive control. After 48 h confrontation, ten 10-μL aliquots of each well were deposited on slides and observed under the microscope (40 ×). Dead and alive larvae in the aliquots were quantified, and a mortality rate (MR) was estimated. RESULTS The MR of the different NFCF was greatly enhanced by the presence of HcCE. The four NF incubated in the absence of HcCE showed low mortality percentages from 8.2 to 25.8%; in contrast, when the assessed NF growth in the presence of HcCE showed a lethal activity ranging from 66.8 to 80.5%. Only C. rosea showed a moderate increase in the presence of the elicitor (42.7%). CONCLUSION This study shows evidence about the HcCE enhances the production of nematocidal activity in NFCF. Future studies should be performed to elucidate the compounds responsible of the nematocidal activity that could have important implications in the control of sheep haemonchosis.
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Affiliation(s)
- Pedro Mendoza-de Gives
- Unidad de Investigación en Helmintología, Centro Nacional de Investigación Disciplinaria en Salud Animal e Inocuidad, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Boulevar Paseo Cuauhnahuac No. 8534, Col. Progreso, 62550, Jiutepec, Morelos, Mexico
| | - Marilem Rodríguez-Labastida
- Unidad de Biotecnología, Centro de Investigación Científica de Yucatán A.C., Calle 43 No. 130 x 32 y 34, Chuburná de Hidalgo, 97205, Mérida, Yucatán, Mexico
| | - Agustín Olmedo-Juárez
- Unidad de Investigación en Helmintología, Centro Nacional de Investigación Disciplinaria en Salud Animal e Inocuidad, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Boulevar Paseo Cuauhnahuac No. 8534, Col. Progreso, 62550, Jiutepec, Morelos, Mexico
| | - María Marcela Gamboa-Angulo
- Unidad de Biotecnología, Centro de Investigación Científica de Yucatán A.C., Calle 43 No. 130 x 32 y 34, Chuburná de Hidalgo, 97205, Mérida, Yucatán, Mexico.
| | - Manuela Reyes-Estebanez
- Departamento de Microbiología Ambiental y Biotecnología, Universidad Autónoma de Campeche, Av. Agustín Melgar S/N Entre Calle 20 y Juan de la Barrera, Col. Buenavista, 24039, San Francisco de Campeche, Campeche, Mexico.
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10
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In vitro characterization bioassays of the nematophagous fungus Purpureocillium lilacinum: Evaluation on growth, extracellular enzymes, mycotoxins and survival in the surrounding agroecosystem of tomato. Fungal Biol 2022; 126:300-307. [DOI: 10.1016/j.funbio.2022.02.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 02/03/2022] [Accepted: 02/13/2022] [Indexed: 11/23/2022]
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11
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Rondilla RRL, dela Cruz TEE, Chang FR, Nonato MG. <i>Annulohypoxylon stygium</i>, a <i>Pandanus simplex-</i>associated fungal endophyte with α-glucosidase inhibitory activity. STUDIES IN FUNGI 2022. [DOI: 10.48130/sif-2022-0004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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12
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Effect of an Arthrobotrys musiformis (Fungi: Orbiliales) culture filtrate on the population of gastrointestinal parasitic nematode eggs in faeces of grazing lambs. Vet Parasitol Reg Stud Reports 2021; 24:100565. [PMID: 34024381 DOI: 10.1016/j.vprsr.2021.100565] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 03/08/2021] [Accepted: 03/30/2021] [Indexed: 11/21/2022]
Abstract
This study assessed the anthelmintic activity of the oral administration of a free-spore culture filtrate of the nematophagous fungus (NF) Arthrobotrys musiformis (M-10) on gastrointestinal parasitic nematodes (GIN) in naturally infected lambs. The fungus was grown on potato-dextrose agar plates (PDA) and transferred to a fermented rice medium (FRM). After 40-day incubation the total amount of FRM with the growing fungi was transferred to a flask shaker with distilled water for a 24 h period. The fungus was centrifuged and filtered. Three groups of six naturally-infected lambs (>1000 epg) each were treated once as follows: Group 1) 63.8 mg/kg A. musiformis culture filtrate (CF) (per os); Group 2) Levamisole 7.5 mg/ml (intramuscularly), Group 3) 15 ml of distilled water (per os). Faecal samples were individually collected on days -2, 0, 2, 4, 6, 8 and 10 after treatment. For each experimental group, mean egg shedding was calculated and transformed (log 10 [epg + 1]). Means between the fungal filtrate group and the negative control were analysed using a T-Student Test. The faecal egg count reduction test (FECRT) was performed in groups treated with CF and Levamisole in relation to the control group (water) were 36.8-57.4% and 89-95.4%, respectively., although due to the difference between groups, no statistical significance was found (p > 0.05). The use of A. musiformis CF appears to be a good alternative treatment, although, more studies should be performed to establish the use of these fungal products as potential tools for GIN control.
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13
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Tegha HF, Jouda JB, Dzoyem JP, Sema DK, Leutcha BP, Allémann E, Delie F, Shiono Y, Sewald N, Lannang AM. A New Chromene Derivative and a New Polyalcohol Isolated From the Fungus Xylaria sp. 111A Associated With Garcinia polyantha Leaves. Nat Prod Commun 2021. [DOI: 10.1177/1934578x20987334] [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
From the crude extract of the plant-associated fungus Xylaria sp. collected in Cameroon, a new 2 H-chromene derivative, hexacycloxylariolone (1), and a new polyalcohol, xylatriol (2), were isolated, in addition to 3 known compounds, 2,3-furandiol (3), 1,8-dimethoxynaphthalene (4), and 1-palmitoyl-rac-glycerol (5). Their chemical structures were established on the basis of the interpretation of spectroscopic data. Hexacycloxylariolone (1), 1,8-dimethoxynaphthalene (4), and 1-palmitoyl-rac-glycerol (5) showed antiproliferative activity by inhibiting the growth of Raw 264.7 and THP-1 cancer cell lines.
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Affiliation(s)
- Hycienth Fung Tegha
- Department of Chemistry, Faculty of Science, University of Maroua, Cameroon
- Department of Chemistry, Higher Teachers’ Training College, University of Maroua, Cameroon
| | - Jean-Bosco Jouda
- Department of Chemical Engineering, School of Chemical Engineering and Mineral Industries, Ngaoundere, Cameroon
| | - Jean Paul Dzoyem
- Department of Biochemistry, Faculty of Science, University of Dschang, Cameroon
- School of Pharmaceutical Sciences, University of Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Switzerland
| | - Denis Kehdinga Sema
- Department of Chemistry, Faculty of Science, University of Maroua, Cameroon
- Department of Chemistry, Higher Teachers’ Training College, University of Maroua, Cameroon
| | - Bosco Peron Leutcha
- Department of Chemistry, Faculty of Science, University of Maroua, Cameroon
- Department of Chemistry, Higher Teachers’ Training College, University of Maroua, Cameroon
| | - Eric Allémann
- School of Pharmaceutical Sciences, University of Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Switzerland
| | - Florence Delie
- School of Pharmaceutical Sciences, University of Geneva, Switzerland
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Switzerland
| | - Yoshihito Shiono
- Department of Food, Life, and Environmental Science, Faculty of Agriculture, Yamagata University, Tsuruoka, Japan
| | - Norbert Sewald
- Department of Chemistry, Organic and Bioorganic Chemistry, Bielefeld University, Germany
| | - Alain Meli Lannang
- Department of Chemistry, Higher Teachers’ Training College, University of Maroua, Cameroon
- Department of Chemical Engineering, School of Chemical Engineering and Mineral Industries, Ngaoundere, Cameroon
- Department of Chemistry, Organic and Bioorganic Chemistry, Bielefeld University, Germany
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14
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Ferreira SR, Machado ART, Furtado LF, Gomes JHDS, de Almeida RM, de Oliveira Mendes T, Maciel VN, Barbosa FS, Carvalho LM, Bueno LL, Bartholomeu DC, de Araújo JV, Rabelo EML, de Pádua RM, Pimenta LPS, Fujiwara RT. Ketamine can be produced by Pochonia chlamydosporia: an old molecule and a new anthelmintic? Parasit Vectors 2020; 13:527. [PMID: 33081837 PMCID: PMC7574484 DOI: 10.1186/s13071-020-04402-w] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 10/09/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Infection by nematodes is a problem for human health, livestock, and agriculture, as it causes deficits in host health, increases production costs, and incurs a reduced food supply. The control of these parasites is usually done using anthelmintics, which, in most cases, have not been fully effective. Therefore, the search for new molecules with anthelmintic potential is necessary. METHODS In the present study, we isolated and characterized molecules from the nematophagous fungus Pochonia chlamydosporia and tested these compounds on three nematodes: Caenorhabditis elegans; Ancylostoma ceylanicum; and Ascaris suum. RESULTS The ethyl acetate extract showed nematicidal activity on the nematode model C. elegans. We identified the major substance present in two sub-fractions of this extract as ketamine. Then, we tested this compound on C. elegans and the parasites A. ceylanicum and A. suum using hamsters and mice as hosts, respectively. We did not find a difference between the animal groups when considering the number of worms recovered from the intestines of animals treated with ketamine (6 mg) and albendazole (P > 0.05). The parasite burden of larvae recovered from the lungs of mice treated with ketamine was similar to those treated with ivermectin. CONCLUSIONS The results presented here demonstrate the nematicidal activity of ketamine in vitro and in vivo, thus confirming the nematicidal potential of the molecule present in the fungus P. chlamydosporia may consist of a new method of controlling parasites.
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Affiliation(s)
- Sebastiao Rodrigo Ferreira
- Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, MG, 31270-901, Brazil.,Centro de Formação em Ciências da Saúde, Universidade Federal do Sul da Bahia, Praça Joana Angélica, 250, Teixeira de Freitas, BA, 45988-058, Brazil
| | - Alan Rodrigues T Machado
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, MG, 31270-901, Brazil.,Departamento de Ciências Exatas, Universidade do Estado de Minas Gerais, Unidade João Monlevade, João Monlevade, MG, 35930-314, Brazil
| | - Luís Fernando Furtado
- Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, MG, 31270-901, Brazil.,Universidade do Estado de Minas Gerais, Unidade Passos, Avenida Juca Stockler, Nossa Sra. das Gracas, 1130, Passos, MG, 37900-106, Brazil
| | - Jose Hugo de S Gomes
- Departamento de Produtos Naturais, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, MG, 31270-901, Brazil
| | - Raquel M de Almeida
- Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, MG, 31270-901, Brazil
| | - Thiago de Oliveira Mendes
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal de Viçosa, Av. Peter Henry Rolfs, s/n, Viçosa, MG, 36.570-000, Brazil
| | - Valentina N Maciel
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, MG, 31270-901, Brazil
| | - Fernando Sergio Barbosa
- Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, MG, 31270-901, Brazil
| | - Lorendane M Carvalho
- Departamento de Medicina Veterinária, Universidade Federal de Viçosa, Av. Peter Henry Rolfs, s/n, Viçosa, MG, 36.570-000, Brazil
| | - Lilian Lacerda Bueno
- Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, MG, 31270-901, Brazil
| | - Daniella Castanheira Bartholomeu
- Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, MG, 31270-901, Brazil
| | - Jackson Victor de Araújo
- Departamento de Medicina Veterinária, Universidade Federal de Viçosa, Av. Peter Henry Rolfs, s/n, Viçosa, MG, 36.570-000, Brazil
| | - Elida M L Rabelo
- Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, MG, 31270-901, Brazil
| | - Rodrigo Maia de Pádua
- Departamento de Produtos Naturais, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, MG, 31270-901, Brazil
| | - Lucia Pinheiro Santos Pimenta
- Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, MG, 31270-901, Brazil
| | - Ricardo Toshio Fujiwara
- Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, MG, 31270-901, Brazil.
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15
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Feeding Fungal-Pretreated Corn Straw Improves Health and Meat Quality of Lambs Infected with Gastrointestinal Nematodes. Animals (Basel) 2020; 10:ani10091659. [PMID: 32947784 PMCID: PMC7552176 DOI: 10.3390/ani10091659] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 09/11/2020] [Accepted: 09/11/2020] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Non-chemical strategies to control gastrointestinal nematode (GINs) infections are urgently needed to support the sustainable development of the livestock industry. The potential anti-parasitic properties in fungal-pretreated corn straw on health and meat quality of lambs infected with GINs were investigated in this study. In summary, feeding fungal-pretreated corn straw improved health and meat quality, including meat color and tenderness. Improved meat traits were attributed to fungal-pretreated corn straw providing additional dietary protein for lambs and secreting some nematicidal metabolites to repel GINs, which increased PCV and plasma iron content of lambs and reversed negative effects of GINs on meat quality. Abstract Infections with gastrointestinal nematodes (GIN) adversely affect meat color in lambs. Although white-rot fungi (WRF) pretreatment increases nutritional value and fiber digestion of corn straw for lambs, whether it can improve meat quality of lambs infected with GINs is unknown. The objective of this experiment was to study effects of feeding WRF-pretreated corn straw on the health and meat quality of lambs infected with GINs. Sixteen healthy Ujumqin lambs were orally drenched with 3rd-stage GINs larvae and randomly divided into two dietary treatments of control (CON) and WRF diets for 70 days of feeding. Results showed that feeding WRF-pretreated corn straw decreased L* and b* values (p < 0.05) and increased a* value (p < 0.01) of both longissimus thoracis et lumborum (LTL) and semimembranosus (SM) muscles of lambs infected with GINs. Feeding WRF-pretreatment corn straw decreased fecal egg count (p = 0.014) and increased packed cell volume (p = 0.013) of lambs from 28 d of feeding and increased plasma iron content (p = 0.008) of lambs from 56 d of the feeding. Feeding WRF-pretreatment corn straw decreased myosin heavy-chain (MyHC)-I (p = 0.032) and MyHC-IIα (p = 0.025) content in LTL muscle and MyHC-I (p = 0.022) and MyHC-IIβ (p = 0.048) in SM muscle of lambs. In conclusion, although there were no significant changes in the content of most amino acids or increased intensity of better flavor compounds, meat quality and health of lambs infected with GINs was significantly improved by feeding WRF-pretreated corn straw due to increased PCV and meat color and tenderness.
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16
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Strom N, Hu W, Haarith D, Chen S, Bushley K. Corn and Soybean Host Root Endophytic Fungi with Toxicity Toward the Soybean Cyst Nematode. PHYTOPATHOLOGY 2020; 110:603-614. [PMID: 31631807 DOI: 10.1094/phyto-07-19-0243-r] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Although fungal endophytes are commonly investigated for their ability to deter microbial plant pathogens, few studies have examined the activity of fungal root endophytes against nematodes. The soybean cyst nematode (SCN; Heterodera glycines), the most severe yield-limiting pathogen of soybean (Glycine max), is commonly managed through rotation of soybean with corn (Zea mays), a nonhost of the SCN. A total of 626 fungal endophytes were isolated from surface-sterilized corn and soybean roots from experimental plots in which soybean and corn had been grown under annual rotation and under 1, 3, 5, and 35 years of continuous monoculture. Fungal isolates were grouped into 401 morphotypes, which were clustered into 108 operational taxonomic units (OTUs) based on 99% sequence similarity of the full internal transcribed spacer region. Morphotype representatives within each OTU were grown in malt extract broth and in a secondary metabolite-inducing medium buffered with ammonium tartrate, and their culture filtrates were tested for nematicidal activity against SCN juveniles. A majority of OTUs containing isolates with nematicidal culture filtrates were in the order Hypocreales, with the genus Fusarium being the most commonly isolated nematicidal genus from corn and soybean roots. Less commonly isolated taxa from soybean roots included the nematophagous fungi Hirsutella rhossiliensis, Metacordyceps chlamydosporia, and Arthrobotrys iridis. Root endophytic fungal diversity in soybean was positively correlated with SCN density, suggesting that the SCN plays a role in shaping the soybean root endophytic community.
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Affiliation(s)
- Noah Strom
- Department of Plant and Microbial Biology, University of Minnesota, Saint Paul, MN
| | - Weiming Hu
- Entomology and Nematology Department, University of Florida, Gainesville, FL
| | - Deepak Haarith
- Department of Plant Pathology, University of Minnesota, Saint Paul, MN
| | - Senyu Chen
- Southern Research and Outreach Center, University of Minnesota, Waseca, MN
| | - Kathryn Bushley
- Department of Plant and Microbial Biology, University of Minnesota, Saint Paul, MN
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17
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Haarith D, Bushley KE, Chen S. Fungal communities associated with Heterodera glycines and their potential in biological control: a current update. J Nematol 2020; 52:1-17. [PMID: 32180383 PMCID: PMC7266048 DOI: 10.21307/jofnem-2020-022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Indexed: 11/11/2022] Open
Abstract
The soybean cyst nematode (SCN) is the most important pest on soybean, a major crop worldwide. The SCN is considered both parasitic and pathogenic as it derives nutrition from the host and manipulates host physiology to do so. Currently, there are no commercially available chemicals that are specific, environmentally safe and cost effective to control SCN levels. Crop rotation, use of host resistance and other cultural practices remain the main management strategies. The need for bioprospecting other methods of controlling SCN is paramount, and fungi show promise in that respect. Several studies have evaluated fungi and fungal products as biocontrol options against plant-parasitic nematodes. This review discusses fungal genera isolated from the SCN with potential for use as biocontrol agents and the effects of their secondary metabolites on various stages of SCN development. The review also summarizes efforts to control SCN using soil amendments that could potentially impact fungal communities in the soil. The soybean cyst nematode (SCN) is the most important pest on soybean, a major crop worldwide. The SCN is considered both parasitic and pathogenic as it derives nutrition from the host and manipulates host physiology to do so. Currently, there are no commercially available chemicals that are specific, environmentally safe and cost effective to control SCN levels. Crop rotation, use of host resistance and other cultural practices remain the main management strategies. The need for bioprospecting other methods of controlling SCN is paramount, and fungi show promise in that respect. Several studies have evaluated fungi and fungal products as biocontrol options against plant-parasitic nematodes. This review discusses fungal genera isolated from the SCN with potential for use as biocontrol agents and the effects of their secondary metabolites on various stages of SCN development. The review also summarizes efforts to control SCN using soil amendments that could potentially impact fungal communities in the soil.
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Affiliation(s)
- Deepak Haarith
- Department of Plant Pathology, University of Minnesota, St. Paul, MN 55108
| | - Kathryn E. Bushley
- Department of Plant and Microbial Biology, University of Minnesota, St. Paul, MN 55108
| | - Senyu Chen
- Department of Plant Pathology, University of Minnesota, St. Paul, MN 55108
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18
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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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19
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20
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Makar S, Saha T, Singh SK. Naphthalene, a versatile platform in medicinal chemistry: Sky-high perspective. Eur J Med Chem 2018; 161:252-276. [PMID: 30366253 DOI: 10.1016/j.ejmech.2018.10.018] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 10/06/2018] [Accepted: 10/09/2018] [Indexed: 02/01/2023]
Abstract
Naphthalene, a cytotoxic moiety, is an extensively explored aromatic conjugated system with applications in various pathophysiological conditions viz. anticancer, antimicrobial, anti-inflammatory, antiviral, antitubercular, antihypertensive, antidiabetic, anti-neurodegenerative, antipsychotic, anticonvulsant, antidepressant. Naphthalene epoxides and naphthoquinones are most reactive metabolites of naphthalene and are responsible for the covalent interaction with cysteine amino acid of cellular proteins for cytotoxic nature. Many naphthalene derived bioactive phytoconstituents are present in nature including podophyllotoxins (Etoposide, teniposide), bis-ANS 82, Rifampicin, Justiprocumin A, B, Patentiflorin A. The naphthalene-based molecules, viz. Naphyrone, tolnaftate, naftifine, nafcillin, terbinafine, propranolol, nabumetone, nafimidone, naproxen, duloxetine, lasofoxifene, bedaquiline etc. have also been approved by FDA and are being marketed as therapeutics. Thus, the naphthalene scaffold emerges as an important building block in drug discovery owing to its broad spectrum of biological activities through varying structural modifications. This review incorporates the pharmacological aspects of different types of chemically modified naphthalene-based molecules along with their activity profile. This compiled information may serve as a benchmark for the alteration of existing ligands to design novel potent molecules with lesser side effects.
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Affiliation(s)
- Subhajit Makar
- Pharmaceutical Chemistry Research Laboratory, Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (BHU), Varanasi, 221005, India
| | - Tanmay Saha
- Pharmaceutical Chemistry Research Laboratory, Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (BHU), Varanasi, 221005, India
| | - Sushil K Singh
- Pharmaceutical Chemistry Research Laboratory, Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (BHU), Varanasi, 221005, India.
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21
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Dickschat JS, Wang T, Stadler M. Volatiles from the xylarialean fungus Hypoxylon invadens. Beilstein J Org Chem 2018; 14:734-746. [PMID: 29719571 PMCID: PMC5905279 DOI: 10.3762/bjoc.14.62] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Accepted: 03/20/2018] [Indexed: 11/23/2022] Open
Abstract
The volatiles emitted by agar plate cultures of the xylarialean fungus Hypoxylon invadens were investigated by use of a closed loop stripping apparatus in combination with GC-MS. Several aromatic compounds were found that could only be identified by comparison to all possible constitutional isomers with different ring substitution patterns. For the set of identified compounds a plausible biosynthetic scheme was suggested that gives further support for the assigned structures.
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Affiliation(s)
- Jeroen S Dickschat
- Kekulé-Institut für Organische Chemie, Universität Bonn, Gerhard-Domagk-Straße 1, 53121 Bonn, Germany
| | - Tao Wang
- Kekulé-Institut für Organische Chemie, Universität Bonn, Gerhard-Domagk-Straße 1, 53121 Bonn, Germany
| | - Marc Stadler
- Abteilung Mikrobielle Wirkstoffe, Helmholtz-Zentrum für Infektionsforschung, Inhoffenstraße 7, 38124 Braunschweig, Germany
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22
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Rupcic Z, Chepkirui C, Hernández-Restrepo M, Crous PW, Luangsa-Ard JJ, Stadler M. New nematicidal and antimicrobial secondary metabolites from a new species in the new genus, Pseudobambusicola thailandica. MycoKeys 2018:1-23. [PMID: 29681740 PMCID: PMC5904430 DOI: 10.3897/mycokeys.33.23341] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Accepted: 03/14/2018] [Indexed: 11/13/2022] Open
Abstract
During the course of a study on the functional biodiversity of the mycobiota inhabiting rainforests in Thailand, a fungal strain was isolated from a plant sample and shown to represent an undescribed species, as inferred from a combination of morphological and molecular phylogenetic methods. Molecular phylogenetic analyses, based on four DNA loci, revealed a phylogenetic tree with the newly generated sequences clustering in a separate branch, together with members of the Sulcatisporaceae (Pleosporales, Ascomycota). The Thai specimen morphologically resembled Neobambusicolastrelitziae in having pycnidial conidiomata with phialidic conidiogenous cells that produce both fusoid-ellipsoid macroconidia and subcylindrical microconidia. However, the new fungus, for which the name Pseudobambusicolathailandica is proposed, differs from N.strelitziae in having conidiomata with well-defined necks, the presence of globose to subglobose thick-walled cells adjacent to conidiomata and the production of chlamydospores in culture. When cultures of P.thailandica, growing on water agar, were confronted with Caenorhabditiselegans nematodes, worms approaching the fungal mycelia were killed. This observation gave rise to a study of its secondary metabolites and six novel and two known compounds were isolated from submerged cultures of P.thailandica. The structures of metabolites 1–6, for which the trivial names thailanones A–F are proposed, were elucidated using a combination of spectral methods, including extensive 1 and 2D NMR analysis and high resolution mass spectrometry. Compounds 4 and 8 showed strong nematicidal and weak antifungal activity, whereas all other tested compounds showed moderate to weak nematicidal activity but no significant effects in the serial dilution assay against various fungi and bacteria. Compounds 1 and 8 also inhibited growth of the pathogenic basidiomycete Phellinustremulae in a plate diffusion assay.
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Affiliation(s)
- Zeljka Rupcic
- Department Microbial Drugs, Helmholtz Centre for Infection Research GmbH, Inhoffenstraße 7, 38124 Braunschweig, Germany.,German Centre for Infection Research (DZIF), partner site Hannover-Braunschweig, 38124 Braunschweig, Germany
| | - Clara Chepkirui
- Department Microbial Drugs, Helmholtz Centre for Infection Research GmbH, Inhoffenstraße 7, 38124 Braunschweig, Germany.,German Centre for Infection Research (DZIF), partner site Hannover-Braunschweig, 38124 Braunschweig, Germany
| | | | - Pedro W Crous
- Westerdijk Fungal Biodiversity Institute, P.O. Box 85167, 3508 AD Utrecht, The Netherlands
| | | | - Marc Stadler
- Department Microbial Drugs, Helmholtz Centre for Infection Research GmbH, Inhoffenstraße 7, 38124 Braunschweig, Germany.,German Centre for Infection Research (DZIF), partner site Hannover-Braunschweig, 38124 Braunschweig, Germany
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23
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Wang T, Mohr KI, Stadler M, Dickschat JS. Volatiles from the tropical ascomycete Daldinia clavata (Hypoxylaceae, Xylariales). Beilstein J Org Chem 2018; 14:135-147. [PMID: 29441137 PMCID: PMC5789425 DOI: 10.3762/bjoc.14.9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 01/04/2018] [Indexed: 11/23/2022] Open
Abstract
The volatiles from the fungus Daldinia clavata were collected by use of a closed-loop stripping apparatus and analysed by GC-MS. A few compounds were readily identified by comparison of measured to library mass spectra and of retention indices to published data, while for other compounds a synthesis of references was required. For one of the main compounds, 5-hydroxy-4,6-dimethyloctan-3-one, the relative and absolute configuration was determined by synthesis of all eight stereoisomers and gas chromatographic analysis using a homochiral stationary phase. Another identified new natural product is 6-nonyl-2H-pyran-2-one. The antimicrobial and cytotoxic effects of the synthetic volatiles are also reported.
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Affiliation(s)
- Tao Wang
- Kekulé-Institut für Organische Chemie, Universität Bonn, Gerhard-Domagk-Straße 1, 53121 Bonn, Germany
| | - Kathrin I Mohr
- Abteilung für Mikrobielle Wirkstoffe, Helmholtz-Zentrum für Infektionsforschung, Inhoffenstraße 7, 38124 Braunschweig, Germany
| | - Marc Stadler
- Abteilung für Mikrobielle Wirkstoffe, Helmholtz-Zentrum für Infektionsforschung, Inhoffenstraße 7, 38124 Braunschweig, Germany
| | - Jeroen S Dickschat
- Kekulé-Institut für Organische Chemie, Universität Bonn, Gerhard-Domagk-Straße 1, 53121 Bonn, Germany
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Ashrafi S, Helaly S, Schroers HJ, Stadler M, Richert-Poeggeler KR, Dababat AA, Maier W. Ijuhya vitellina sp. nov., a novel source for chaetoglobosin A, is a destructive parasite of the cereal cyst nematode Heterodera filipjevi. PLoS One 2017; 12:e0180032. [PMID: 28700638 PMCID: PMC5507501 DOI: 10.1371/journal.pone.0180032] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Accepted: 06/07/2017] [Indexed: 01/17/2023] Open
Abstract
Cyst nematodes are globally important pathogens in agriculture. Their sedentary lifestyle and long-term association with the roots of host plants render cyst nematodes especially good targets for attack by parasitic fungi. In this context fungi were specifically isolated from nematode eggs of the cereal cyst nematode Heterodera filipjevi. Here, Ijuhya vitellina (Ascomycota, Hypocreales, Bionectriaceae), encountered in wheat fields in Turkey, is newly described on the basis of phylogenetic analyses, morphological characters and life-style related inferences. The species destructively parasitises eggs inside cysts of H. filipjevi. The parasitism was reproduced in in vitro studies. Infected eggs were found to harbour microsclerotia produced by I. vitellina that resemble long-term survival structures also known from other ascomycetes. Microsclerotia were also formed by this species in pure cultures obtained from both, solitarily isolated infected eggs obtained from fields and artificially infected eggs. Hyphae penetrating the eggshell colonised the interior of eggs and became transformed into multicellular, chlamydospore-like structures that developed into microsclerotia. When isolated on artificial media, microsclerotia germinated to produce multiple emerging hyphae. The specific nature of morphological structures produced by I. vitellina inside nematode eggs is interpreted as a unique mode of interaction allowing long-term survival of the fungus inside nematode cysts that are known to survive periods of drought or other harsh environmental conditions. Generic classification of the new species is based on molecular phylogenetic inferences using five different gene regions. I. vitellina is the only species of the genus known to parasitise nematodes and produce microsclerotia. Metabolomic analyses revealed that within the Ijuhya species studied here, only I. vitellina produces chaetoglobosin A and its derivate 19-O-acetylchaetoglobosin A. Nematicidal and nematode-inhibiting activities of these compounds have been demonstrated suggesting that the production of these compounds may represent an adaptation to nematode parasitism.
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Affiliation(s)
- Samad Ashrafi
- Institute for Epidemiology and Pathogen Diagnostics, Julius Kühn-Institut (JKI)—Federal Research Centre for Cultivated Plants, Braunschweig, Germany
- Department of Ecological Plant Protection, Faculty of Organic Agricultural Sciences, University of Kassel, Witzenhausen, Germany
| | - Soleiman Helaly
- Department Microbial Drugs, Helmholtz Centre for Infection Research GmbH (HZI), Braunschweig, Germany
- Department of Chemistry, Faculty of Science, Aswan University, Aswan, Egypt
| | | | - Marc Stadler
- Department Microbial Drugs, Helmholtz Centre for Infection Research GmbH (HZI), Braunschweig, Germany
| | - Katja R. Richert-Poeggeler
- Institute for Epidemiology and Pathogen Diagnostics, Julius Kühn-Institut (JKI)—Federal Research Centre for Cultivated Plants, Braunschweig, Germany
| | - Abdelfattah A. Dababat
- CIMMYT (International Maize and Wheat Improvement Centre), P.K.39 06511 Emek, Ankara, Turkey
| | - Wolfgang Maier
- Institute for Epidemiology and Pathogen Diagnostics, Julius Kühn-Institut (JKI)—Federal Research Centre for Cultivated Plants, Braunschweig, Germany
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McMullin DR, Green BD, Prince NC, Tanney JB, Miller JD. Natural Products of Picea Endophytes from the Acadian Forest. JOURNAL OF NATURAL PRODUCTS 2017; 80:1475-1483. [PMID: 28398744 DOI: 10.1021/acs.jnatprod.6b01157] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Endophytes of healthy needles were collected from Picea rubens (red spruce) and P. mariana (black spruce) in a survey of southeastern New Brunswick, Canada. Four endophyte strains were selected for further investigation based on the production of biologically active extracts from culture filtrates during screening as well as phylogenetic relationship to species known to produce natural products or taxonomic novelty. A novel endophyte within the family Rhytismataceae produced two new dihydropyrones (1 and 2) as major metabolites together with phthalides (3 and 4), isocoumarins (5 and 6), and tyrosol (7). Lachnum cf. pygmaeum synthesized a new chlorinated para-quinone, chloromycorrhizinone A (8), and the nematicidal compounds (1'Z)-dechloromycorrhizin A (9), mycorrhizin A (10), and chloromycorrhizin A (11). A new isocoumarin (12) and four related structures (13-16) were isolated from an undescribed taxon in the Mycosphaerellaceae. The known antifungal metabolites cryptosporiopsin (17), 5-hydroxycryptosporiopsin (18), (+)-cryptosporiopsinol (19), and mellein (20) were produced by Pezicula sporulosa. Phylogenetically diverse conifer endophytes from the Acadian forest continue to be a productive source of new biologically active natural products.
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Affiliation(s)
- David R McMullin
- Ottawa Carleton Institute of Chemistry, Carleton University , 1125 Colonel By Drive, Ottawa, Ontario, Canada , K1S 5B6
| | - Blake D Green
- Ottawa Carleton Institute of Chemistry, Carleton University , 1125 Colonel By Drive, Ottawa, Ontario, Canada , K1S 5B6
| | - Natasha C Prince
- Ottawa Carleton Institute of Chemistry, Carleton University , 1125 Colonel By Drive, Ottawa, Ontario, Canada , K1S 5B6
| | - Joey B Tanney
- Ottawa Carleton Institute of Chemistry, Carleton University , 1125 Colonel By Drive, Ottawa, Ontario, Canada , K1S 5B6
| | - J David Miller
- Ottawa Carleton Institute of Chemistry, Carleton University , 1125 Colonel By Drive, Ottawa, Ontario, Canada , K1S 5B6
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Liu T, Meyer SLF, Chitwood DJ, Chauhan KR, Dong D, Zhang T, Li J, Liu WC. New Nematotoxic Indoloditerpenoid Produced by Gymnoascus reessii za-130. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:3127-3132. [PMID: 28343383 DOI: 10.1021/acs.jafc.6b04353] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Chemical investigation of the fungal strain Gymnoascus reessii za-130, which was previously isolated from the rhizosphere of tomato plants infected by the root-knot nematode Meloidogyne incognita, led to the isolation and identification of a new indoloditerpenoid metabolite designated gymnoascole acetate. Its structure was established by spectroscopic methods including 1D- and 2D-NMR and MS analyses. Gymnoascole acetate demonstrated strong adverse effects on M. incognita second-stage juvenile (J2) viability; exposure to 36 μg/mL for 24 h induced 100% paralysis of J2 (EC50 = 47.5 μg/mL). Gymnoascole acetate suppressed M. incognita egg hatch relative to controls by >90% at 133 μg/mL after 7 days of exposure. The numbers of root galls and J2 in both soil and roots were significantly reduced (p = 0.05) by treatment with 2-200 μg/mL gymnoascole acetate/kg soil, compared to untreated control plants; nematode suppression increased with gymnoascole acetate concentration. This study demonstrated the nematotoxicity of gymnoascole acetate and indicates that it might be a potential biobased component in integrated management of M. incognita.
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Affiliation(s)
- Ting Liu
- Institute of Plant and Environmental Protection, Beijing Academy of Agricultural and Forestry Science , Beijing 100097, China
| | - Susan L F Meyer
- Mycology and Nematology Genetic Diversity and Biology Laboratory, Agricultural Research Service, U.S. Department of Agriculture , Building 010A, 10300 Baltimore Avenue, Beltsville, Maryland 20705, United States
| | - David J Chitwood
- Mycology and Nematology Genetic Diversity and Biology Laboratory, Agricultural Research Service, U.S. Department of Agriculture , Building 010A, 10300 Baltimore Avenue, Beltsville, Maryland 20705, United States
| | - Kamlesh R Chauhan
- Invasive Insect Biocontrol and Behavior Laboratory, Agricultural Research Service, U.S. Department of Agriculture , Building 007, 10300 Baltimore Avenue, Beltsville, Maryland 20705, United States
| | - Dan Dong
- Institute of Plant and Environmental Protection, Beijing Academy of Agricultural and Forestry Science , Beijing 100097, China
| | - TaoTao Zhang
- Institute of Plant and Environmental Protection, Beijing Academy of Agricultural and Forestry Science , Beijing 100097, China
| | - Jun Li
- Modern Research Center for Traditional Chinese Medicine, Beijing University of Chinese Medicine , Beijing 100029, China
| | - Wei-Cheng Liu
- Institute of Plant and Environmental Protection, Beijing Academy of Agricultural and Forestry Science , Beijing 100097, China
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Septiana E, Sukarno N, Sukarno, Simanjuntak P. Endophytic Fungi Associated With Turmeric ( Curcuma longa L.) Can Inhibit Histamine-Forming Bacteria in Fish. HAYATI JOURNAL OF BIOSCIENCES 2017. [DOI: 10.1016/j.hjb.2017.05.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Liarzi O, Bucki P, Braun Miyara S, Ezra D. Bioactive Volatiles from an Endophytic Daldinia cf. concentrica Isolate Affect the Viability of the Plant Parasitic Nematode Meloidogyne javanica. PLoS One 2016; 11:e0168437. [PMID: 27997626 PMCID: PMC5173030 DOI: 10.1371/journal.pone.0168437] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 12/01/2016] [Indexed: 11/18/2022] Open
Abstract
Plant-parasitic nematodes form one of the largest sources of biotic stress imposed on plants, and are very difficult to control; among them are the obligate parasites, the sedentary root-knot nematodes (RKNs)-Meloidogyne spp.-which are extremely polyphagous and exploit a very wide range of hosts. Endophytic fungi are organisms that spend most of their life cycle within plant tissue without causing visible damage to the host plant. Many endophytes secrete specialized metabolites and/or emit volatile organic compounds (VOCs) that exhibit biological activity. Recently, we demonstrated that the endophytic fungus Daldinia cf. concentrica secrets biologically active VOCs. Here we examined the ability of the fungus and its VOCs to control the RKN M. javanica both in vitro and greenhouse experiments. The D. cf. concentrica VOCs showed bionematicidal activity against the second-stage juveniles (J2s) of M. javanica. We found that exposure of J2s to fungal volatiles caused 67% reduction in viability, and that application of a synthetic volatile mixture (SVM), comprising 3-methyl-1-butanol, (±)-2-methyl-1-butanol, 4-heptanone, and isoamyl acetate, in volumetric ratio of 1:1:2:1 further reduced J2s viability by 99%. We demonstrated that, although each of the four VOCs significantly reduced the viability of J2s relative to the control, only 4-heptanone elicited the same effect as the whole mixture, with nematicidal activity of 90% reduction in viability of the J2s. Study of the effect of the SVM on egg hatching demonstrated that it decreased eggs hatching by 87%. Finally, application of the SVM to soil inoculated with M. javanica eggs or J2s prior to planting susceptible tomato plants resulted in a significantly reduced galling index and fewer eggs produced on each root system, with no effect on root weight. Thus, D. cf. concentrica and/or SVM based on fungal VOCs may be considered as a novel alternative approach to controlling the RKN M. javanica.
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Affiliation(s)
- Orna Liarzi
- Department of Plant Pathology and Weed Research, ARO - the Volcani Center, Rishon LeZion, Israel
| | - Patricia Bucki
- Department of Entomology and the Nematology and Chemistry units, ARO - the Volcani Center, Rishon LeZion, Israel
| | - Sigal Braun Miyara
- Department of Entomology and the Nematology and Chemistry units, ARO - the Volcani Center, Rishon LeZion, Israel
| | - David Ezra
- Department of Plant Pathology and Weed Research, ARO - the Volcani Center, Rishon LeZion, Israel
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29
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Liarzi O, Bar E, Lewinsohn E, Ezra D. Use of the Endophytic Fungus Daldinia cf. concentrica and Its Volatiles as Bio-Control Agents. PLoS One 2016; 11:e0168242. [PMID: 27977739 PMCID: PMC5158029 DOI: 10.1371/journal.pone.0168242] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 11/10/2016] [Indexed: 11/23/2022] Open
Abstract
Endophytic fungi are organisms that spend most of their life cycle within plant tissues without causing any visible damage to the host plant. Many endophytes were found to secrete specialized metabolites and/or emit volatile organic compounds (VOCs), which may be biologically active and assist fungal survival inside the plant as well as benefit their hosts. We report on the isolation and characterization of a VOCs-emitting endophytic fungus, isolated from an olive tree (Olea europaea L.) growing in Israel; the isolate was identified as Daldinia cf. concentrica. We found that the emitted VOCs were active against various fungi from diverse phyla. Results from postharvest experiments demonstrated that D. cf. concentrica prevented development of molds on organic dried fruits, and eliminated Aspergillus niger infection in peanuts. Gas chromatography-mass spectrometry analysis of the volatiles led to identification of 27 VOCs. On the basis of these VOCs we prepared two mixtures that displayed a broad spectrum of antifungal activity. In postharvest experiments these mixtures prevented development of molds on wheat grains, and fully eliminated A. niger infection in peanuts. In light of these findings, we suggest use of D. cf. concentrica and/or its volatiles as an alternative approach to controlling phytopathogenic fungi in the food industry and in agriculture.
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Affiliation(s)
- Orna Liarzi
- Department of Plant Pathology and Weed Research, Agricultural Research Organization, the Volcani Center, Rishon LeZion, Israel
| | - Einat Bar
- Newe Ya'ar Regional Research Center, Ramat Yishai, Israel
| | | | - David Ezra
- Department of Plant Pathology and Weed Research, Agricultural Research Organization, the Volcani Center, Rishon LeZion, Israel
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30
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Degenkolb T, Vilcinskas A. Metabolites from nematophagous fungi and nematicidal natural products from fungi as alternatives for biological control. Part II: metabolites from nematophagous basidiomycetes and non-nematophagous fungi. Appl Microbiol Biotechnol 2016; 100:3813-24. [PMID: 26728016 PMCID: PMC4824808 DOI: 10.1007/s00253-015-7234-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2015] [Revised: 11/29/2015] [Accepted: 12/02/2015] [Indexed: 11/05/2022]
Abstract
In this second section of a two-part mini-review article, we introduce 101 further nematicidal and non-nematicidal secondary metabolites biosynthesized by nematophagous basidiomycetes or non-nematophagous ascomycetes and basidiomycetes. Several of these compounds have promising nematicidal activity and deserve further and more detailed analysis. Thermolides A and B, omphalotins, ophiobolins, bursaphelocides A and B, illinitone A, pseudohalonectrins A and B, dichomitin B, and caryopsomycins A–C are excellent candidates or lead compounds for the development of biocontrol strategies for phytopathogenic nematodes. Paraherquamides, clonostachydiol, and nafuredins offer promising leads for the development of formulations against the intestinal nematodes of ruminants.
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Affiliation(s)
- Thomas Degenkolb
- Institute for Insect Biotechnology, Justus-Liebig-University of Giessen, Heinrich-Buff-Ring 26-32, D-35392, Giessen, Germany
| | - Andreas Vilcinskas
- Institute for Insect Biotechnology, Justus-Liebig-University of Giessen, Heinrich-Buff-Ring 26-32, D-35392, Giessen, Germany. .,Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Winchester Strasse 2, D-35394, Giessen, Germany.
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31
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Hellberg JEEU, Matilla MA, Salmond GPC. The broad-spectrum antibiotic, zeamine, kills the nematode worm Caenorhabditis elegans. Front Microbiol 2015; 6:137. [PMID: 25767467 PMCID: PMC4341552 DOI: 10.3389/fmicb.2015.00137] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Accepted: 02/05/2015] [Indexed: 12/02/2022] Open
Abstract
Soil bacteria can be prolific producers of secondary metabolites and other biologically active compounds of economic and clinical importance. These natural products are often synthesized by large multi-enzyme complexes such as polyketide synthases (PKSs) or non-ribosomal peptide synthases (NRPSs). The plant-associated Gram-negative bacterium, Serratia plymuthica A153, produces several secondary metabolites and is capable of killing the nematode worm Caenorhabditis elegans; a commonly used model for the study of bacterial virulence. In this study, we show that disruption of the hybrid PKS/NRPS zeamine (zmn) gene cluster results in the attenuation of “fast-killing” of C. elegans, indicating that zeamine has nematicidal activity. C. elegans also exhibits age-dependent susceptibility to zeamine, with younger worms being most sensitive to the bioactive molecule. The zmn gene cluster is widely distributed within Serratia and phytopathogenic Dickeya species and investigation of strains harboring the zmn gene cluster showed that several of them are highly virulent in C. elegans. Zeamine was described previously as a phytotoxin and broad-spectrum antibacterial compound. In addition to its nematicidal properties, we show here that zeamine can also kill Saccharomyces cerevisiae and Schizosaccharomyces pombe. The expression of the zmn gene cluster and regulation of zeamine production were also investigated. Transcription of the cluster was growth phase-dependent, and was modulated by the post-transcriptional RNA chaperone, Hfq. The results of this study show that zeamine is a highly toxic molecule with little, or no, apparent host specificity in very diverse biological systems. In its current form, zeamine(s) may be useful as a lead compound suitable for chemical modification and structure-activity assays. However, because of widespread non-selective toxicity in multiple bioassays, unmodified zeamine(s) is unlikely to be suitable as a therapeutic antibiotic.
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Affiliation(s)
| | - Miguel A Matilla
- Department of Biochemistry, University of Cambridge Cambridge, UK ; Department of Environmental Protection, Estación Experimental del Zaidín - Consejo Superior de Investigaciones Científicas Granada, Spain
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A new endophytic insect-associated Daldinia species, recognised from a comparison of secondary metabolite profiles and molecular phylogeny. FUNGAL DIVERS 2013. [DOI: 10.1007/s13225-013-0238-5] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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35
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Dong JY, Wang L, Song HC, Wang LM, Shen KZ, Sun R, Li GH, Li L, Zhang KQ. Ophiocerol, a novel macrocylic neolignan from the aquatic fungus Ophioceras dolichostomum YMF1.00988. Nat Prod Res 2010; 24:1004-12. [PMID: 20552522 DOI: 10.1080/14786410902854126] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
From cultural filtrates of the freshwater fungus Ophioceras dolichostomum YMF1.00988 a novel neolignan with an unprecedented dibenzo-1,6-dioxacyclodecane carbon skeleton, ophiocerol (1), was isolated, and the known compounds isoamericanoic acid A (2) and caffeic acid (3) were identified. The structure of the novel compound was determined by interpretation of its spectroscopic data, including 1D and 2D, (1)H and (13)C NMR (COSY, HMQC, HMBC, NOESY), and MS. Compounds 1-3 were assayed for their nematicidal activity against Bursaphelenchus xylophilus as well as their antifungal activity against several plant pathogen fungi.
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Affiliation(s)
- Jin-Yan Dong
- Laboratory for Conservation and Utilization of Bio-Resources and Key Laboratory for Microbial Resources of the Chinese Ministry of Education, Yunnan University, Kunming, P.R. China
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Dai J, Krohn K, Draeger S, Schulz B. New Naphthalene-Chroman Coupling Products from the Endophytic Fungus,Nodulisporium sp.fromErica arborea. European J Org Chem 2009. [DOI: 10.1002/ejoc.200801106] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Zhu Y, Dong J, Wang L, Zhou W, Li L, He H, Liu H, Zhang K. Screening and isolation of antinematodal metabolites againstBursaphelenchus xylophilus produced by fungi. ANN MICROBIOL 2008. [DOI: 10.1007/bf03175531] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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38
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Benie T, Kouakou K, Thieulant ML. Estrogen effects of Daldinia concentrica and Psathyrella efflorescens extracts in vitro. JOURNAL OF ETHNOPHARMACOLOGY 2008; 116:152-160. [PMID: 18164884 DOI: 10.1016/j.jep.2007.11.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2006] [Revised: 11/13/2007] [Accepted: 11/15/2007] [Indexed: 05/25/2023]
Abstract
Daldinia concentrica and Psathyrella efflorescens are two fungi used in African traditional medicine. In the present study, their extracts were evaluated for their steroid activities in estrogen- or androgen-dependent cell lines using as endpoints steroid-dependent transcriptional activity and cell proliferation. Treatment of human breast cancer MCF-7 cells with 15 or 30 microg/ml of Daldinia concentrica or Psathyrellaefflorescens extracts in the absence of 17beta-estradiol (E2) significantly increased the transcriptional activity of an estrogen receptor (ER)-dependent reporter gene, in the same range as E2. Similar data were obtained in gonadotrope cell line alpha-T3-1. All the effects were prevented by the pure estrogen antagonist, ICI 182,780. In the absence of steroid addition, the two extracts induced cell proliferation of ER-dependent MCF-7 and Ishikawa Var-I cell lines by approximately 100% of the E2 response. Combination treatments with E2 showed no competitive or additive effects in the two latter cell lines. Interestingly, the extracts had no androgen-like response in androgen receptor (AR)-positive and ER-negative MDA-MB231 cells, suggesting that fungi effects are estrogen specific and extracts are not toxic at used concentrations. Results provided evidence that Daldinia concentrica or Psathyrellaefflorescens extracts induce estrogen-like effects in ER-positive cell lines, which could be responsible of the effects observed in vivo.
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Affiliation(s)
- Tanon Benie
- Université de Cocody, U.F.R Biosciences, Laboratoire d'Endocrinologie et de Biologie de la Reproduction, 22 BP 582 Abidjan 22, Côte d'Ivoire, France
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Shinya R, Aiuchi D, Kushida A, Tani M, Kuramochi K, Koike M. Effects of fungal culture filtrates of Verticillium lecanii (Lecanicillium spp.) hybrid strains on Heterodera glycines eggs and juveniles. J Invertebr Pathol 2007; 97:291-7. [PMID: 18191415 DOI: 10.1016/j.jip.2007.11.005] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2007] [Revised: 11/19/2007] [Accepted: 11/20/2007] [Indexed: 11/29/2022]
Abstract
Many nematode-antagonistic fungi produce secondary metabolites and enzymes that demonstrate toxicity against plant-parasitic nematodes. The objective of this study was to evaluate the effects of fungal culture filtrates of Verticillium lecanii hybrid strains on mature eggs, embryonated eggs (eggs fertilized but without development of juveniles), and second-stage juveniles (J2) of Heterodera glycines and to compare these effects with those of their parental strains. The fungal culture filtrates of certain hybrid strains inhibited egg hatch of mature eggs. Furthermore, the fungal culture filtrates of two hybrid strains, AaF23 and AaF42, exhibited high toxicity against embryonated eggs of H. glycines. However, most of the fungal culture filtrates of V. lecanii did not inactivate J2. These results suggested that enzymes or other active compounds produced by the fungal culture filtrates of V. lecanii exhibit activity against specific stages in the H. glycines life cycle. In addition, based on a visual assessment of the morphological changes in eggs caused by filtrates of each strain, there were differences between the hybrid strains and their respective parental strains with regard to the active substances produced by V. lecanii against the embryonated eggs. As a result of promoting recombination of whole genomes via protoplast fusion, several hybrid strains may have enhanced production of active substances that are different from those produced by their parental strains. It was concluded that natural substances produced by V. lecanii are one of the important factors involved in the suppression of H. glycines damage.
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Affiliation(s)
- Ryoji Shinya
- Department of Agro-Environmental Science, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido 080-8555, Japan
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Al-Zereini W, Schuhmann I, Laatsch H, Helmke E, Anke H. New Aromatic Nitro Compounds from Salegentibacter sp. T436, an Arctic Sea Ice Bacterium: Taxonomy, Fermentation, Isolation and Biological Activities. J Antibiot (Tokyo) 2007; 60:301-8. [PMID: 17551208 DOI: 10.1038/ja.2007.38] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Nineteen aromatic nitro compounds were isolated from the culture broth of an Arctic sea ice bacterium. Four of these compounds are new and six compounds are reported from a natural source for the first time. The new natural products showed weak antimicrobial and cytotoxic activities. 2-nitro-4-(2'-nitroethenyl)-phenol was the most potent antimicrobial and cytotoxic substance. Some of the compounds exhibit plant growth modulating activities. Based on its biochemical properties and the 16S rRNA gene sequence, the producing strain can be described as a distinct species within the genus Salegentibacter.
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Affiliation(s)
- Wael Al-Zereini
- Institute for Biotechnology and Drug Research (IBWF), Kaiserslautern, Germany
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42
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Preliminary results on nematicidal activity from culture filtrates of Basidiomycetes against the pine wood nematode,Bursaphelenchus xylophilus (Aphelenchoididae). ANN MICROBIOL 2006. [DOI: 10.1007/bf03174999] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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43
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Shipley SM, Barr AL, Graf SJ, Collins RP, McCloud TG, Newman DJ. Development of a process for the production of the anticancer lead compound pleurotin by fermentation of Hohenbuehelia atrocaerulea. J Ind Microbiol Biotechnol 2006; 33:463-8. [PMID: 16501932 DOI: 10.1007/s10295-006-0089-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2005] [Accepted: 01/25/2006] [Indexed: 12/01/2022]
Abstract
Pleurotin is a naphthoquinone antibiotic originally isolated from Pleurotus griseus. Two pleurotin producing strains of Hohenbuehelia atrocaerulea have been identified, which, on solid substrate fermentation for 2 months yield 1-2 mg/l of the antibiotic. Described here is the lengthy developmental process which resulted in a production protocol being developed which reliably yields pleurotin from liquid fermentation at >300 mg/l. Critical to obtaining this increase in titer was inclusion in the media of an aqueous extract of alder wood.
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Affiliation(s)
- S M Shipley
- Natural Products Support Group, SAIC-Frederick, Inc, Bldg. 431, Box B, Frederick, MD 21702, USA
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Antimicrobial Butyrolactone I Derivatives from the Ecuadorian Soil Fungus Aspergillus terreus Thorn. var terreus. World J Microbiol Biotechnol 2005. [DOI: 10.1007/s11274-004-8150-5] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Eapen SJ, Beena B, Ramana KV. Tropical soil microflora of spice-based cropping systems as potential antagonists of root-knot nematodes. J Invertebr Pathol 2005; 88:218-25. [PMID: 15955340 DOI: 10.1016/j.jip.2005.01.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2004] [Revised: 11/05/2004] [Accepted: 01/18/2005] [Indexed: 10/25/2022]
Abstract
Suppression of plant parasitic nematodes with nematode predators, parasites or antagonists is an eco-friendly approach than the toxic chemicals. In a study, soil borne fungi from the rhizosphere of major spice crops were collected from diverse cropping systems prevailing in three southern states of India. A series of in vitro studies were conducted using 73 freshly collected fungal isolates and 76 isolates obtained from other sources. Out of this 67 isolates were not parasitic on females of root-knot nematodes whereas 115 isolates, though colonized the egg masses, did not show any signs of parasitism on nematode eggs. Fifty-nine isolates showed 50-90% inhibition in egg hatch. Pochonia chlamydospora, Verticillium lecanii, Paecilomyces lilacinus, and few isolates of Trichoderma spp. showed >25% parasitism on root-knot nematode eggs. The most promising isolates in this study were one isolate each of Aspergillus (F.45), Fusarium (F.47), and Penicillium (F.59); three each isolates of Trichoderma (F.3, F.52, and F.60) and Pochonia (F.30 and Vc.3) Verticillium (Vl); and two isolates of fungi that could not be identified (F.28 and F.62). Parasitism by Aspergillus tamarii, Aspergillus ustus, Drechslera sp., Humicola sp., and Scopulariopsis sp. on root-knot nematode eggs or females, reported in the present study, are new reports.
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Affiliation(s)
- Santhosh J Eapen
- Division of Crop Protection, Indian Institute of Spices Research, Calicut 673 012, Kerala, India.
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Park JO, Hargreaves JR, McConville EJ, Stirling GR, Ghisalberti EL, Sivasithamparam K. Production of leucinostatins and nematicidal activity of Australian isolates of Paecilomyces lilacinus (Thom) Samson. Lett Appl Microbiol 2004; 38:271-6. [PMID: 15214724 DOI: 10.1111/j.1472-765x.2004.01488.x] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIMS To evaluate the relationship between leucinostatin production by Paecilomyces lilacinus isolates and their biological activities. METHODS AND RESULTS The nematicidal, parasitic and enzymatic activity of Australian P. lilacinus isolates were investigated. Nematicidal activities of culture filtrates were measured by mortality and inhibition of reproduction of Caenorhabditis elegans, whereas egg-parasitic activity was measured by colonization on Meloidogyne javanica. Enzymatic activities (protease and chitinase) were assayed on solid media. The results suggest that leucinostatins in P. lilacinus are indicators of nematicidal activity, whereas chitinase activity might be related to parasitism. CONCLUSIONS Nematicidal activity of culture filtrates of Paecilomyces lilacinus strains related to their ability to produce leucinostatins. SIGNIFICANCE AND IMPACT OF THE STUDY This is the first study describing the leucinostatins as nematicides.
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Affiliation(s)
- J O Park
- Soil Science and Plant Nutrition, The University of Western Australia, Crawley, Western Australia, Australia
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Stadler M, Tichy HV, Katsiou E, Hellwig V. Chemotaxonomy of Pochonia and other conidial fungi with Verticillium-like anamorphs. Mycol Prog 2003. [DOI: 10.1007/s11557-006-0048-1] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Abstract
This review examines the discovery of naturally occurring phytochemicals antagonistic toward plant-parasitic and other nematodes. Higher plants have yielded a broad spectrum of active compounds, including polythienyls, isothiocyanates, glucosinolates, cyanogenic glycosides, polyacetylenes, alkaloids, lipids, terpenoids, sesquiterpenoids, diterpenoids, quassinoids, steroids, triterpenoids, simple and complex phenolics, and several other classes. Many other antinematodal compounds have been isolated from biocontrol and other fungi. Natural products active against mammalian parasites can serve as useful sources of compounds for examination of activity against plant parasites. The agricultural utilization of phytochemicals, although currently uneconomic in many situations, offers tremendous potential.
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Affiliation(s)
- David J Chitwood
- Nematology Laboratory, USDA-ARS, Building 011A, BARC-West, Beltsville, Maryland 20705, USA.
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Schneider G, Anke H, Sterner O. New Secondary Metabolites from a MycophilicHansfordiaSpecies. ACTA ACUST UNITED AC 1997. [DOI: 10.1080/10575639708043728] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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