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Abouamama S, Anis B, Abir S, Maroua H, Sirine B. Amylolytic and antibacterial activity of filamentous fungi isolated from the rhizosphere of different plants grown in the Tamanghasset region. Heliyon 2023; 9:e14350. [PMID: 36942260 PMCID: PMC10024112 DOI: 10.1016/j.heliyon.2023.e14350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 02/27/2023] [Accepted: 03/02/2023] [Indexed: 03/12/2023] Open
Abstract
In the present study, we were interested in studying the amylolytic and antibacterial activity of some filamentous fungi isolated from the rhizosphere of cultivated plants in Tamanghasset region. Consequently, 11 pure strains belonging to the different fungal genera were isolated Alternaria, Aspergillus, Cladosporium, Curvularia, Fusarium, Mucor and Penicillium. Positive result of amylolytic activity was revealed on all the isolated strains, with important hydrolysis zones of 54.33 ± 1.15 mm, 54.00 ± 3.61 mm, 52.00 ± 6.08 mm and 51.33 ± 15.01 mm for Aspergillus sp.1, Curvularia sp., Fusarium sp.2 and Mucor sp. respectively. In addition, analysis of variance (ANOVA) of the means of hydrolysis zones diameters shows that the values linked by the same letter do not show any significant difference at P < 0.05. Antibacterial activity of the isolated fungal was demonstrated by the agar cylinder technique against four pathogenic bacterial strains. The results showed a variability of the inhibition zones, thus the most important results were recorded against S. aureus, E. coli and K. pneumonia for all fungi which produced inhibition zones ranging from 15.33 ± 0.00 to 23.66 ± 1.71 mm. while all isolate had the lowest inhibition zone against P. aeruginosa. In conclusion, the obtained results indicated the isolated filamentous fungi have the potential to inhibit the four pathogenic bacterial strains, S. aureus, E. coli, K. pneumonia and P. aeruginosa, while simultaneously showed significant amylolytic activity.
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Affiliation(s)
- Sidaoui Abouamama
- Faculty of Science and Technology, Department of Biology, Amine Elokkal El Hadj Moussa Egakhamouk University of Tamanghasset, 11000, Tamanghasset, Algeria
- Corresponding author.
| | - Bertella Anis
- Department of Molecular and Cellular Biology, Faculty of Nature and Life sSciences, Abbes Laghrour University of Khenchela, Algeria
| | - Semmadi Abir
- Faculty of Science and Technology, Department of Biology, Amine Elokkal El Hadj Moussa Egakhamouk University of Tamanghasset, 11000, Tamanghasset, Algeria
| | - Hemdi Maroua
- Faculty of Science and Technology, Department of Biology, Amine Elokkal El Hadj Moussa Egakhamouk University of Tamanghasset, 11000, Tamanghasset, Algeria
| | - Baali Sirine
- Faculty of Science and Technology, Department of Biology, Amine Elokkal El Hadj Moussa Egakhamouk University of Tamanghasset, 11000, Tamanghasset, Algeria
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Triastuti A, Vansteelandt M, Barakat F, Amasifuen C, Jargeat P, Haddad M. Untargeted metabolomics to evaluate antifungal mechanism: a study of Cophinforma mamane and Candida albicans interaction. NATURAL PRODUCTS AND BIOPROSPECTING 2023; 13:1. [PMID: 36595109 PMCID: PMC9810774 DOI: 10.1007/s13659-022-00365-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
Microbial interactions between filamentous fungi and yeast are still not fully understood. To evaluate a potential antifungal activity of a filamentous fungus while highlighting metabolomic changes, co-cultures between an endophytic strain of Cophinforma mamane (CM) and Candida albicans (CA) were performed. The liquid cultures were incubated under static conditions and metabolite alterations during the course were investigated by ultra-performance liquid chromatography-tandem mass spectrophotometry (UPLC-MS/MS). Results were analyzed using MS-DIAL, MS-FINDER, METLIN, Xcalibur, SciFinder, and MetaboAnalyst metabolomics platforms. The metabolites associated with catabolic processes, including the metabolism of branched-chain amino acids, carnitine, and phospholipids were upregulated both in the mono and co-cultures, indicating fungal adaptability to environmental stress. Several metabolites, including C20 sphinganine 1-phosphate, myo-inositol, farnesol, gamma-undecalactone, folinic acid, palmitoleic acid, and MG (12:/0:0/0:0) were not produced by CA during co-culture with CM, demonstrating the antifungal mechanism of CM. Our results highlight the crucial roles of metabolomics studies to provide essential information regarding the antifungal mechanism of C. mamane against C. albicans, especially when the lost/undetected metabolites are involved in fungal survival and pathogenicity.
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Affiliation(s)
- Asih Triastuti
- UMR 152 Pharma Dev, IRD, UPS, Université de Toulouse, 31400, Toulouse, France.
- Department of Pharmacy, Universitas Islam Indonesia, Yogyakarta, 55584, Indonesia.
| | | | - Fatima Barakat
- UMR 152 Pharma Dev, IRD, UPS, Université de Toulouse, 31400, Toulouse, France
| | - Carlos Amasifuen
- Dirección de Recursos Genéticos y Biotecnología, Instituto Nacional de Innovación Agraria, Avenida La Molina 1981, La Molina, Lima, 15024, Peru
| | - Patricia Jargeat
- Laboratoire Evolution et Diversité Biologique UMR 5174, CNRS, IRD, UPS, Université de Toulouse, 31062, Toulouse, France
| | - Mohamed Haddad
- UMR 152 Pharma Dev, IRD, UPS, Université de Toulouse, 31400, Toulouse, France.
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3
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Evaluation of Biological Activity of Natural Compounds: Current Trends and Methods. Molecules 2022; 27:molecules27144490. [PMID: 35889361 PMCID: PMC9324072 DOI: 10.3390/molecules27144490] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 06/26/2022] [Accepted: 07/04/2022] [Indexed: 02/08/2023] Open
Abstract
Natural compounds have diverse structures and are present in different forms of life. Metabolites such as tannins, anthocyanins, and alkaloids, among others, serve as a defense mechanism in live organisms and are undoubtedly compounds of interest for the food, cosmetic, and pharmaceutical industries. Plants, bacteria, and insects represent sources of biomolecules with diverse activities, which are in many cases poorly studied. To use these molecules for different applications, it is essential to know their structure, concentrations, and biological activity potential. In vitro techniques that evaluate the biological activity of the molecules of interest have been developed since the 1950s. Currently, different methodologies have emerged to overcome some of the limitations of these traditional techniques, mainly via reductions in time and costs. These emerging technologies continue to appear due to the urgent need to expand the analysis capacity of a growing number of reported biomolecules. This review presents an updated summary of the conventional and relevant methods to evaluate the natural compounds’ biological activity in vitro.
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Baptista P, Guedes de Pinho P, Moreira N, Malheiro R, Reis F, Padrão J, Tavares R, Lino-Neto T. In vitro interactions between the ectomycorrhizal Pisolithus tinctorius and the saprotroph Hypholoma fasciculare fungi: morphological aspects and volatile production. Mycology 2021; 12:216-229. [PMID: 34552812 PMCID: PMC8451600 DOI: 10.1080/21501203.2021.1876778] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Ectomycorrhizal fungi are crucial for forests sustainability. For Castanea sativa, ectomycorrhizal fungus Pisolithus tinctorius is an important mutualist partner. Saprotrophic fungi Hypholoma fasciculare, although used for biocontrol of Armillaria root disease, it negatively affected the interaction between the P. tinctorius and plant host roots, by compromise the formation of P. tinctorius-C. sativa mycorrhizae. In this work, fungal morphology during inhibition of H. fasciculare against P. tinctorius was elucidated. P. tinctorius growth was strongly affected by H. fasciculare, which was significantly reduced after six days of co-culture and become even more significant through time. During this period, P. tinctorius developed vesicles and calcium oxalate crystals, which were described as mechanisms to stress adaption by fungi. H. fasciculare produced different volatile organic compounds in co-cultures over time and differ between single or in dual-species. H. fasciculare highly produced sesquiterpenes (namely, α-muurolene) and nitrogen-containing compounds, which are recognised as having antimicrobial activity.
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Affiliation(s)
- Paula Baptista
- Centro De Investigação De Montanha (CIMO), Instituto Politécnico De Bragança, Campus De Santa Apolónia, Bragança, Portugal
| | - Paula Guedes de Pinho
- UCIBIO-REQUIMTE/Laboratory of Toxicology, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Nathalie Moreira
- UCIBIO-REQUIMTE/Laboratory of Toxicology, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Ricardo Malheiro
- Centro De Investigação De Montanha (CIMO), Instituto Politécnico De Bragança, Campus De Santa Apolónia, Bragança, Portugal
| | - Francisca Reis
- BioSystems & Integrative Sciences Institute (Bioisi), Plant Functional Biology Centre, University of Minho, Campus De Gualtar, Braga, Portugal
| | - Jorge Padrão
- BioSystems & Integrative Sciences Institute (Bioisi), Plant Functional Biology Centre, University of Minho, Campus De Gualtar, Braga, Portugal
| | - Rui Tavares
- BioSystems & Integrative Sciences Institute (Bioisi), Plant Functional Biology Centre, University of Minho, Campus De Gualtar, Braga, Portugal
| | - Teresa Lino-Neto
- BioSystems & Integrative Sciences Institute (Bioisi), Plant Functional Biology Centre, University of Minho, Campus De Gualtar, Braga, Portugal
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Butle AB, Talmale SA, Jadhao VV, Patil MB, Lambat TL. Immunostimulatory and anti-allergic potential of novel heterotrimeric lectin from seeds of Zizyphus mauritiana Lam. Int J Biol Macromol 2021; 171:389-397. [PMID: 33428960 DOI: 10.1016/j.ijbiomac.2021.01.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 01/05/2021] [Accepted: 01/05/2021] [Indexed: 10/22/2022]
Abstract
Zizyphus mauritiana Lam. seeds (ZMS) have been used medicinally as sedative or hypnotic drugs in most of Asian countries. ZMS has significant benefits to the human health. Therefore, we have evaluated immunomodulatory effect of lectin extracted from these ZMSL in both in vitro and in vivo study. Anaphylaxis is a severe life-threatening allergic reaction and Arthus reaction is deposition of immune complex and complement system activation, so we hypothesized that if ZMSL can protect these severe allergic diseases. We have studied the effect of ZMSL on macrophages and Wistar albino rats and confirmed its protective effect against anaphylaxis and Arthus reaction. Results of this study suggest ZMSL have immunostimulatory and antiallergic activity.
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Affiliation(s)
- Ashwin B Butle
- Department of Biochemistry, RashtrasantTukadoji Maharaj Nagpur University, Nagpur 440033, Maharashtra, India.
| | - Suhas A Talmale
- Department of Biochemistry, RashtrasantTukadoji Maharaj Nagpur University, Nagpur 440033, Maharashtra, India
| | - Vivek V Jadhao
- Department of Biochemistry, RashtrasantTukadoji Maharaj Nagpur University, Nagpur 440033, Maharashtra, India
| | - Mandakini B Patil
- Department of Biochemistry, RashtrasantTukadoji Maharaj Nagpur University, Nagpur 440033, Maharashtra, India.
| | - Trimurti L Lambat
- Department of Chemistry, Manoharbhai Patel College of Arts, Commerce & Science, Deori, dist-Gondia 441901, Maharashtra, India.
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Correa Y, Cabanillas B, Jullian V, Álvarez D, Castillo D, Dufloer C, Bustamante B, Roncal E, Neyra E, Sheen P, Sauvain M. Identification and characterization of compounds from Chrysosporium multifidum, a fungus with moderate antimicrobial activity isolated from Hermetia illucens gut microbiota. PLoS One 2019; 14:e0218837. [PMID: 31860650 PMCID: PMC6924690 DOI: 10.1371/journal.pone.0218837] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 12/04/2019] [Indexed: 12/19/2022] Open
Abstract
The gut microbiota of insects is composed of a wide range of microorganisms which produce bioactive compounds that protect their host from pathogenic attack. In the present study, we isolate and identify the fungus Chrysosporium multifidum from the gut of Hermetia illucens larvae. Extract from C. multifidum culture broth supernatant showed moderate activity against a strain of methicillin-resistant Staphylococcus aureus (MRSA). Bioguided isolation of the extract resulted in the characterization of six α-pyrone derivatives (1–6) and one diketopiperazine (7). Of these compounds, 5,6-dihydro-4-methoxy-6-(1-oxopentyl)-2H-pyran-2-one (4) showed the greatest activity (IC50 = 11.4 ± 0.7 μg/mL and MIC = 62.5 μg/mL) against MRSA.
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Affiliation(s)
- Yesenia Correa
- Laboratorios de Investigación y Desarrollo, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Billy Cabanillas
- Laboratorios de Investigación y Desarrollo, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Valérie Jullian
- Unité Mixte de Recherche 152 Pharmacochimie et Biologie pour le Développement, Institut de Recherche pour le Développement, Université Toulouse III-Paul Sabatier, Toulouse, France
| | - Daniela Álvarez
- Laboratorios de Investigación y Desarrollo, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Denis Castillo
- Laboratorios de Investigación y Desarrollo, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Cédric Dufloer
- Unité Mixte de Recherche 152 Pharmacochimie et Biologie pour le Développement, Institut de Recherche pour le Développement, Université Toulouse III-Paul Sabatier, Toulouse, France
| | - Beatriz Bustamante
- Clinical Mycology Laboratory, Instituto de Medicina Tropical Alexander von Humboldt, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Elisa Roncal
- Laboratorios de Investigación y Desarrollo, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Edgar Neyra
- Laboratorios de Investigación y Desarrollo, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Patricia Sheen
- Laboratorios de Investigación y Desarrollo, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Michel Sauvain
- Laboratorios de Investigación y Desarrollo, Universidad Peruana Cayetano Heredia, Lima, Peru.,Unité Mixte de Recherche 152 Pharmacochimie et Biologie pour le Développement, Institut de Recherche pour le Développement, Université Toulouse III-Paul Sabatier, Toulouse, France
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7
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Biological control of the soft rot bacterium Pectobacterium carotovorum by Bacillus amyloliquefaciens strain Ar10 producing glycolipid-like compounds. Microbiol Res 2018; 217:23-33. [PMID: 30384906 DOI: 10.1016/j.micres.2018.08.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 08/17/2018] [Accepted: 08/28/2018] [Indexed: 11/21/2022]
Abstract
Four hundred and fifty bacteria were evaluated for antagonistic activity against bacterial soft rot of potato caused by Pectobacterium carotovorum sp strain II16. A strain Ar10 exhibiting potent antagonist activity has been identified as Bacillus amyloliquefaciens on the basis of biochemical and molecular characterization. Cell free supernatant showed a broad spectrum of antibacterial activity against human and phytopathogenic bacteria in the range of 10-60 AU/mL. Incubation of P. carotovorum cells with increasing concentrations of the antibacterial compound showed a killing rate of 94.8 and 96% at MIC and 2xMIC respectively. In addition, the antibacterial agent did not exert haemolytic activity at the active concentration and has been preliminary characterized by TLC and GC-MS as a glycolipid compound. Treatment of potato tubers with strain Ar10 for 72 h significantly reduced the severity of disease symptoms (100 and 85.05% reduction of necrosis deep / area and weight loss respectively). The same levels in disease symptoms severity was also recorded following treatment of potato tubers with cell free supernatant for 1 h. Data suggest that protection against potato soft rot disease may be related to glycolipid production by strain Ar10. The present study affords new alternatives for anti-Pectobacterium carotovorum bioactive compounds against the soft rot disease of potato.
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Malhadas C, Malheiro R, Pereira JA, de Pinho PG, Baptista P. Antimicrobial activity of endophytic fungi from olive tree leaves. World J Microbiol Biotechnol 2017; 33:46. [PMID: 28168624 DOI: 10.1007/s11274-017-2216-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Accepted: 01/18/2017] [Indexed: 12/14/2022]
Abstract
In this study, the antimicrobial potential of three fungal endophytes from leaves of Olea europaea L. was evaluated and the host plant extract effect in the antimicrobial activity was examined. The volatile compounds produced by endophytes were identified by GC/MS and further correlated with the antimicrobial activity. In potato dextrose agar, both Penicillium commune and Penicillium canescens were the most effective inhibiting Gram-positive and -negative bacteria (up to 2.7-fold compared to 30 µg/mL chloramphenicol), whereas Alternaria alternata was most effective inhibiting yeasts (up to 8.0-fold compared to 25 μg/mL fluconazole). The presence of aqueous leaf extract in culture medium showed to induce or repress the antimicrobial activity, depending on the endophytic species. In the next step, various organic extracts from both A. alternata mycelium and cultured broth were prepared; being ethyl acetate extracts displayed the widest spectrum of anti-microorganisms at a minimum inhibitory concentration ≤0.095 mg/mL. The volatile composition of the fungi that displayed the highest (A. alternata) and the lowest (P. canescens) antimicrobial activity against yeasts revealed the presence of six volatiles, being the most abundant components (3-methyl-1-butanol and phenylethyl alcohol) ascribed with antimicrobial potentialities. Overall the results highlighted for the first time the antimicrobial potential of endophytic fungi from O. europaea and the possibility to be exploited for their antimicrobial agents.
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Affiliation(s)
- Cynthia Malhadas
- REQUIMTE-LAQV, School of Agriculture, Polytechnic Institute of Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal
| | - Ricardo Malheiro
- REQUIMTE-LAQV, School of Agriculture, Polytechnic Institute of Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal
| | - José Alberto Pereira
- REQUIMTE-LAQV, School of Agriculture, Polytechnic Institute of Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal
| | - Paula Guedes de Pinho
- REQUIMTE/Laboratory of Toxicology, Faculty of Pharmacy, Porto University, Rua Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal
| | - Paula Baptista
- REQUIMTE-LAQV, School of Agriculture, Polytechnic Institute of Bragança, Campus de Santa Apolónia, 5300-253, Bragança, Portugal.
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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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10
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Chovanová K, Zámocký M. Detection of the antibacterial effect of Chaetomium cochliodes Palliser CCM F-232 based on agar plugs and unprocessed fungal substances from cultivation media. Biologia (Bratisl) 2016. [DOI: 10.1515/biolog-2016-0153] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Frąc M, Gryta A, Oszust K, Kotowicz N. Fast and Accurate Microplate Method (Biolog MT2) for Detection of Fusarium Fungicides Resistance/Sensitivity. Front Microbiol 2016; 7:489. [PMID: 27092136 PMCID: PMC4822342 DOI: 10.3389/fmicb.2016.00489] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 03/24/2016] [Indexed: 11/13/2022] Open
Abstract
The need for finding fungicides against Fusarium is a key step in the chemical plant protection and using appropriate chemical agents. Existing, conventional methods of evaluation of Fusarium isolates resistance to fungicides are costly, time-consuming and potentially environmentally harmful due to usage of high amounts of potentially toxic chemicals. Therefore, the development of fast, accurate and effective detection methods for Fusarium resistance to fungicides is urgently required. MT2 microplates (Biolog(TM)) method is traditionally used for bacteria identification and the evaluation of their ability to utilize different carbon substrates. However, to the best of our knowledge, there is no reports concerning the use of this technical tool to determine fungicides resistance of the Fusarium isolates. For this reason, the objectives of this study are to develop a fast method for Fusarium resistance to fungicides detection and to validate the effectiveness approach between both traditional hole-plate and MT2 microplates assays. In presented study MT2 microplate-based assay was evaluated for potential use as an alternative resistance detection method. This was carried out using three commercially available fungicides, containing following active substances: triazoles (tebuconazole), benzimidazoles (carbendazim) and strobilurins (azoxystrobin), in six concentrations (0, 0.0005, 0.005, 0.05, 0.1, 0.2%), for nine selected Fusarium isolates. In this study, the particular concentrations of each fungicides was loaded into MT2 microplate wells. The wells were inoculated with the Fusarium mycelium suspended in PM4-IF inoculating fluid. Before inoculation the suspension was standardized for each isolates into 75% of transmittance. Traditional hole-plate method was used as a control assay. The fungicides concentrations in control method were the following: 0, 0.0005, 0.005, 0.05, 0.5, 1, 2, 5, 10, 25, and 50%. Strong relationships between MT2 microplate and traditional hole-plate methods were observed regarding to the detection of Fusarium resistance to various fungicides and their concentrations. The tebuconazole was most potent, providing increased efficiency in the growth inhibition of all tested isolates. Almost all among tested isolates were resistant to azoxystrobin-based fungicide. Overall, the MT2 microplates method was effective and timesaving, alternative method for determining Fusarium resistance/sensitivity to fungicides, compering to traditional hole-plate approach.
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Affiliation(s)
- Magdalena Frąc
- Laboratory of Molecular and Environmental Microbiology, Department of Soil and Plant System, Institute of Agrophysics, Polish Academy of SciencesLublin, Poland
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12
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Li R, Niu R, Qi J, Yuan H, Fan Y, An H, Yan W, Li H, Zhan Y, Xing C. Conjugated Polythiophene for Rapid, Simple, and High-Throughput Screening of Antimicrobial Photosensitizers. ACS APPLIED MATERIALS & INTERFACES 2015; 7:14569-14572. [PMID: 26134743 DOI: 10.1021/acsami.5b04552] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The cationic conjugated poly[3-(3'-N,N,N-triethylamino-1'-propyloxy)-4-methyl-2,5-thiophene hydrochloride] (PMNT) has been developed for high-throughput screening of photodynamic antimicrobial chemotherapy photosensitizers (PSs). The bacterial number can be detected quantitatively by PMNT via various fluorescence quenching efficiencies. The photosensitized inactivation of bacteria is not efficient with ineffective PSs, and thus the bacteria grow exponentially and can be coated tightly by PMNT through electrostatic and hydrophobic interactions, resulting in aggregates and fluorescence quenching of PMNT, whereas, conversely, effective PSs lead to original and strong fluorescence of PMNT. This new platform of high-throughput screening is promising for discovering new PSs.
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Affiliation(s)
- Ruihua Li
- †School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, P. R. China
| | - Ruimin Niu
- §Key Laboratory of Hebei Province for Molecular Biophysics, Institute of Biophysics, Hebei University of Technology, Tianjin 300401, P. R. China
| | - Junjie Qi
- §Key Laboratory of Hebei Province for Molecular Biophysics, Institute of Biophysics, Hebei University of Technology, Tianjin 300401, P. R. China
| | - Hongbo Yuan
- §Key Laboratory of Hebei Province for Molecular Biophysics, Institute of Biophysics, Hebei University of Technology, Tianjin 300401, P. R. China
| | - Yibing Fan
- §Key Laboratory of Hebei Province for Molecular Biophysics, Institute of Biophysics, Hebei University of Technology, Tianjin 300401, P. R. China
| | - Hailong An
- §Key Laboratory of Hebei Province for Molecular Biophysics, Institute of Biophysics, Hebei University of Technology, Tianjin 300401, P. R. China
| | - Wenmin Yan
- †School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, P. R. China
| | - Huanrong Li
- †School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, P. R. China
| | - Yong Zhan
- §Key Laboratory of Hebei Province for Molecular Biophysics, Institute of Biophysics, Hebei University of Technology, Tianjin 300401, P. R. China
| | - Chengfen Xing
- †School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, P. R. China
- §Key Laboratory of Hebei Province for Molecular Biophysics, Institute of Biophysics, Hebei University of Technology, Tianjin 300401, P. R. China
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13
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Gouba N, Raoult D, Drancourt M. Eukaryote culturomics of the gut reveals new species. PLoS One 2014; 9:e106994. [PMID: 25210972 PMCID: PMC4161381 DOI: 10.1371/journal.pone.0106994] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Accepted: 08/07/2014] [Indexed: 02/07/2023] Open
Abstract
The repertoire of microeukaryotes in the human gut has been poorly explored, mainly in individuals living in northern hemisphere countries. We further explored this repertoire using PCR-sequencing and culture in seven individuals living in four tropical countries. A total of 41 microeukaryotes including 38 different fungal species and three protists were detected. Four fungal species, Davidiella tassiana, Davidiella sp., Corticiaceae sp., and Penicillium sp., were uniquely detected by culture; 27 fungal species were uniquely detected using PCR-sequencing and Candida albicans, Candida glabrata, Trichosporon asahii, Clavispora lusitaniae, Debaryomyces hansenii, Malassezia restricta, and Malassezia sp. were detected using both molecular and culture methods. Fourteen microeukaryotes were shared by the seven individuals, whereas 27 species were found in only one individual, including 11 species in Amazonia, nine species in Polynesia, five species in India, and two species in Senegal. These data support a worldwide distribution of Malassezia sp., Trichosporon sp., and Candida sp. in the gut mycobiome. Here, 13 fungal species and two protists, Stentor roeseli and Vorticella campanula, were observed for first time in the human gut. This study revealed a previously unsuspected diversity in the repertoire of human gut microeukaryotes, suggesting spots for further exploring this repertoire.
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Affiliation(s)
- Nina Gouba
- Aix Marseille Université, URMITE, UMR63, CNRS 7278, IRD 198, Inserm 1095, Marseille, France
| | - Didier Raoult
- Aix Marseille Université, URMITE, UMR63, CNRS 7278, IRD 198, Inserm 1095, Marseille, France
| | - Michel Drancourt
- Aix Marseille Université, URMITE, UMR63, CNRS 7278, IRD 198, Inserm 1095, Marseille, France
- * E-mail:
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