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Estrada M, Navarrete C, Møller S, Procentese A, Martínez JL. Utilization of salt-rich by-products from the dairy industry as feedstock for recombinant protein production by Debaryomyces hansenii. Microb Biotechnol 2022; 16:404-417. [PMID: 36420701 PMCID: PMC9871522 DOI: 10.1111/1751-7915.14179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 10/26/2022] [Accepted: 10/30/2022] [Indexed: 11/27/2022] Open
Abstract
The dairy industry processes vast amounts of milk and generates high amounts of secondary by-products, which are still rich in nutrients (high Chemical Oxygen Demand (COD) and Biochemical Oxygen Demand (BOD) levels) but contain high concentrations of salt. The current European legislation only allows disposing of these effluents directly into the waterways with previous treatment, which is laborious and expensive. Therefore, as much as possible, these by-products are reutilized as animal feed material and, if not applicable, used as fertilizers adding phosphorus, potassium, nitrogen, and other nutrients to the soil. Finding biological alternatives to revalue dairy by-products is of crucial interest in order to improve the utilization of dry dairy matter and reduce the environmental impact of every litre of milk produced. Debaryomyces hansenii is a halotolerant non-conventional yeast with high potential for this purpose. It presents some beneficial traits - capacity to metabolize a variety of sugars, tolerance to high osmotic environments, resistance to extreme temperatures and pHs - that make this yeast a well-suited option to grow using complex feedstock, such as industrial waste, instead of the traditional commercial media. In this work, we study for the first time D. hansenii's ability to grow and produce a recombinant protein (YFP) from dairy saline whey by-products. Cultivations at different scales (1.5, 100 and 500 ml) were performed without neither sterilizing the medium nor using pure water. Our results conclude that D. hansenii is able to perform well and produce YFP in the aforementioned salty substrate. Interestingly, it is able to outcompete other microorganisms present in the waste without altering its cell performance or protein production capacity.
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Affiliation(s)
- Mònica Estrada
- Department of Biotechnology and BiomedicineTechnical University of DenmarkKgs. LyngbyDenmark
| | - Clara Navarrete
- Department of Biotechnology and BiomedicineTechnical University of DenmarkKgs. LyngbyDenmark
| | - Sønke Møller
- SBU Food, Arla Food Ingredients Group P/SViby JDenmark
| | - Alessandra Procentese
- Department of Biotechnology and BiomedicineTechnical University of DenmarkKgs. LyngbyDenmark,Department of Industrial EngineeringUniversity of SalernoSalernoItaly
| | - José L. Martínez
- Department of Biotechnology and BiomedicineTechnical University of DenmarkKgs. LyngbyDenmark
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Strucko T, Andersen NL, Mahler MR, Martínez JL, Mortensen UH. A CRISPR/Cas9 method facilitates efficient oligo-mediated gene editing in Debaryomyces hansenii. Synth Biol (Oxf) 2021; 6:ysab031. [PMID: 34746438 PMCID: PMC8566172 DOI: 10.1093/synbio/ysab031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 09/20/2021] [Accepted: 10/11/2021] [Indexed: 11/27/2022] Open
Abstract
Halophilic and osmotolerant yeast Debaryomyces hansenii has a high potential for cell factory applications due to its resistance to harsh environmental factors and compatibility with a wide substrate range. However, currently available genetic techniques do not allow the full potential of D. hansenii as a cell factory to be harnessed. Moreover, most of the currently available tools rely on the use of auxotrophic markers that are not suitable in wild-type prototrophic strains. In addition, the preferred non-homologous end-joining (NHEJ) DNA damage repair mechanism poses further challenges when precise gene targeting is required. In this study, we present a novel plasmid-based CRISPRCUG/Cas9 method for easy and efficient gene editing of the prototrophic strains of D. hansenii. Our toolset design is based on a dominant marker and facilitates quick assembly of the vectors expressing Cas9 and single or multiple single-guide RNAs (sgRNAs) that provide the possibility for multiplex gene engineering even in prototrophic strains. Moreover, we have constructed NHEJ-deficient D. hansenii that enable our CRISPRCUG/Cas9 tools to support the highly efficient introduction of point mutations and single/double gene deletions. Importantly, we also demonstrate that 90-nt single-stranded DNA oligonucleotides are sufficient for direct repair of DNA breaks induced by sgRNA-Cas9, resulting in precise edits reaching 100% efficiencies. In conclusion, tools developed in this study will greatly advance basic and applied research in D. hansenii. In addition, we envision that our tools can be rapidly adapted for gene editing of other non-conventional yeast species including the ones belonging to the CUG clade.
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Affiliation(s)
- Tomas Strucko
- Department of Biotechnology and Biomedicine, Section for Synthetic Biology, Technical University of Denmark, Kongens Lyngby, Hovedstaden, Denmark
| | - Niklas L Andersen
- Department of Biotechnology and Biomedicine, Section for Synthetic Biology, Technical University of Denmark, Kongens Lyngby, Hovedstaden, Denmark
| | - Mikkel R Mahler
- Department of Biotechnology and Biomedicine, Section for Synthetic Biology, Technical University of Denmark, Kongens Lyngby, Hovedstaden, Denmark
| | - José L Martínez
- Department of Biotechnology and Biomedicine, Section for Synthetic Biology, Technical University of Denmark, Kongens Lyngby, Hovedstaden, Denmark
| | - Uffe H Mortensen
- Department of Biotechnology and Biomedicine, Section for Synthetic Biology, Technical University of Denmark, Kongens Lyngby, Hovedstaden, Denmark
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Vanderwolf KJ, Campbell LJ, Goldberg TL, Blehert DS, Lorch JM. Skin fungal assemblages of bats vary based on susceptibility to white-nose syndrome. THE ISME JOURNAL 2021; 15:909-920. [PMID: 33149209 PMCID: PMC8027032 DOI: 10.1038/s41396-020-00821-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 10/15/2020] [Accepted: 10/22/2020] [Indexed: 01/30/2023]
Abstract
Microbial skin assemblages, including fungal communities, can influence host resistance to infectious diseases. The diversity-invasibility hypothesis predicts that high-diversity communities are less easily invaded than species-poor communities, and thus diverse microbial communities may prevent pathogens from colonizing a host. To explore the hypothesis that host fungal communities mediate resistance to infection by fungal pathogens, we investigated characteristics of bat skin fungal communities as they relate to susceptibility to the emerging disease white-nose syndrome (WNS). Using a culture-based approach, we compared skin fungal assemblage characteristics of 10 bat species that differ in susceptibility to WNS across 10 eastern U.S. states. The fungal assemblages on WNS-susceptible bat species had significantly lower alpha diversity and abundance compared to WNS-resistant species. Overall fungal assemblage structure did not vary based on WNS-susceptibility, but several yeast species were differentially abundant on WNS-resistant bat species. One yeast species inhibited Pseudogymnoascus destructans (Pd), the causative agent on WNS, in vitro under certain conditions, suggesting a possible role in host protection. Further exploration of interactions between Pd and constituents of skin fungal assemblages may prove useful for predicting susceptibility of bat populations to WNS and for developing effective mitigation strategies.
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Affiliation(s)
- Karen J Vanderwolf
- Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WIS, USA
- U.S. Geological Survey, National Wildlife Health Center, Madison, WIS, USA
| | - Lewis J Campbell
- Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WIS, USA
- U.S. Geological Survey, National Wildlife Health Center, Madison, WIS, USA
| | - Tony L Goldberg
- Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin, Madison, WIS, USA
| | - David S Blehert
- U.S. Geological Survey, National Wildlife Health Center, Madison, WIS, USA
| | - Jeffrey M Lorch
- U.S. Geological Survey, National Wildlife Health Center, Madison, WIS, USA.
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Iacumin L, Arnoldi M, Comi G. Effect of a Debaryomyces hansenii and Lactobacillus buchneri Starter Culture on Aspergillus westerdijkiae Ochratoxin A Production and Growth during the Manufacture of Short Seasoned Dry-Cured Ham. Microorganisms 2020; 8:microorganisms8101623. [PMID: 33096725 PMCID: PMC7589860 DOI: 10.3390/microorganisms8101623] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 10/15/2020] [Accepted: 10/19/2020] [Indexed: 11/16/2022] Open
Abstract
Recently, specific dry-cured hams have started to be produced in San Daniele and Parma areas. The ingredients are similar to protected denomination of origin (PDO) produced in San Daniele or Parma areas, and include pork leg, coming from pigs bred in the Italian peninsula, salt and spices. However, these specific new products cannot be marked as a PDO, either San Daniele or Parma dry cured ham, because they are seasoned for 6 months, and the mark PDO is given only to products seasoned over 13 months. Consequently, these products are called short-seasoned dry-cured ham (SSDCH) and are not branded PDO. During their seasoning period, particularly from the first drying until the end of the seasoning period, many molds, including Eurotium spp. and Penicillium spp., can grow on the surface and work together with other molds and tissue enzymes to produce a unique aroma. Both of these strains typically predominate over other molds. However, molds producing ochratoxins, such as Aspergillus ochraceus and Penicillium nordicum, can simultaneously grow and produce ochratoxin A (OTA). Consequently, these dry-cured hams may represent a potential health risk for consumers. Recently, Aspergillus westerdijkiae has been isolated from SSDCHs, which could represent a potential problem for consumers. Therefore, the aim of this study was to inhibit A. westerdijkiae using Debaryomyces hansenii or Lactobacillus buchneri or a mix of both microorganisms. Six D. hansenii and six L. buchneri strains were tested in vitro for their ability to inhibit A. westerdijkiae. The strains D. hansenii (DIAL)1 and L. buchneri (Lb)4 demonstrated the highest inhibitory activity and were selected for in situ tests. The strains were inoculated or co-inoculated on fresh pork legs for SSDCH production with OTA-producing A. westerdijkiae prior to the first drying and seasoning. At the end of seasoning (six months), OTA was not detected in the SSDCH treated with both microorganisms and their combination. Because both strains did not adversely affect the SSDCH odor or flavor, the combination of these strains are proposed for use as starters to inhibit OTA-producing A. westerdijkiae.
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Affiliation(s)
| | | | - Giuseppe Comi
- Correspondence: ; Tel.: +39-0432-558129; Fax: +39-0432-558130
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Díaz MA, Pereyra MM, Santander FFS, Perez MF, Córdoba JM, Alhussein M, Karlovsky P, Dib JR. Protection of Citrus Fruits from Postharvest Infection with Penicillium digitatum and Degradation of Patulin by Biocontrol Yeast Clavispora lusitaniae 146. Microorganisms 2020; 8:E1477. [PMID: 32993018 PMCID: PMC7601000 DOI: 10.3390/microorganisms8101477] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 09/22/2020] [Accepted: 09/23/2020] [Indexed: 01/31/2023] Open
Abstract
Fungal rots are one of the main causes of large economic losses and deterioration in the quality and nutrient composition of fruits during the postharvest stage. The yeast Clavispora lusitaniae 146 has previously been shown to efficiently protect lemons from green mold caused by Penicillium digitatum. In this work, the effect of yeast concentration and exposure time on biocontrol efficiency was assessed; the protection of various citrus fruits against P. digitatum by C. lusitaniae 146 was evaluated; the ability of strain 146 to degrade mycotoxin patulin was tested; and the effect of the treatment on the sensory properties of fruits was determined. An efficient protection of lemons was achieved after minimum exposure to a relatively low yeast cell concentration. Apart from lemons, the yeast prevented green mold in grapefruits, mandarins, oranges, and tangerines, implying that it can be used as a broad-range biocontrol agent in citrus. The ability to degrade patulin indicated that strain 146 may be suitable for the control of further Penicillium species. Yeast treatment did not alter the sensory perception of the aroma of fruits. These results corroborate the potential of C. lusitaniae 146 for the control of postharvest diseases of citrus fruits and indicate its suitability for industrial-scale fruit processing.
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Affiliation(s)
- Mariana Andrea Díaz
- Planta Piloto de Procesos Industriales Microbiológicos (PROIMI) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Belgrano y Pje. Caseros, 4000 Tucumán, Argentina; (M.A.D.); (M.M.P.); (F.F.S.S.); (M.F.P.); (J.M.C.)
| | - Martina María Pereyra
- Planta Piloto de Procesos Industriales Microbiológicos (PROIMI) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Belgrano y Pje. Caseros, 4000 Tucumán, Argentina; (M.A.D.); (M.M.P.); (F.F.S.S.); (M.F.P.); (J.M.C.)
| | - Fabricio Fabián Soliz Santander
- Planta Piloto de Procesos Industriales Microbiológicos (PROIMI) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Belgrano y Pje. Caseros, 4000 Tucumán, Argentina; (M.A.D.); (M.M.P.); (F.F.S.S.); (M.F.P.); (J.M.C.)
| | - María Florencia Perez
- Planta Piloto de Procesos Industriales Microbiológicos (PROIMI) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Belgrano y Pje. Caseros, 4000 Tucumán, Argentina; (M.A.D.); (M.M.P.); (F.F.S.S.); (M.F.P.); (J.M.C.)
| | - Josefina María Córdoba
- Planta Piloto de Procesos Industriales Microbiológicos (PROIMI) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Belgrano y Pje. Caseros, 4000 Tucumán, Argentina; (M.A.D.); (M.M.P.); (F.F.S.S.); (M.F.P.); (J.M.C.)
| | - Mohammad Alhussein
- Molecular Phytopathology and Mycotoxin Research, University of Goettingen, Grisebachstrasse 6, D-37077 Göttingen, Germany;
| | - Petr Karlovsky
- Molecular Phytopathology and Mycotoxin Research, University of Goettingen, Grisebachstrasse 6, D-37077 Göttingen, Germany;
| | - Julián Rafael Dib
- Planta Piloto de Procesos Industriales Microbiológicos (PROIMI) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Belgrano y Pje. Caseros, 4000 Tucumán, Argentina; (M.A.D.); (M.M.P.); (F.F.S.S.); (M.F.P.); (J.M.C.)
- Instituto de Microbiología, Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Ayacucho 471, 4000 Tucumán, Argentina
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Meftah S, Abid S, Dias T, Rodrigues P. Mechanisms underlying the effect of commercial starter cultures and a native yeast on ochratoxin A production in meat products. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2019.108611] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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7
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Freimoser FM, Rueda-Mejia MP, Tilocca B, Migheli Q. Biocontrol yeasts: mechanisms and applications. World J Microbiol Biotechnol 2019; 35:154. [PMID: 31576429 PMCID: PMC6773674 DOI: 10.1007/s11274-019-2728-4] [Citation(s) in RCA: 116] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 09/17/2019] [Indexed: 01/10/2023]
Abstract
Yeasts occur in all environments and have been described as potent antagonists of various plant pathogens. Due to their antagonistic ability, undemanding cultivation requirements, and limited biosafety concerns, many of these unicellular fungi have been considered for biocontrol applications. Here, we review the fundamental research on the mechanisms (e.g., competition, enzyme secretion, toxin production, volatiles, mycoparasitism, induction of resistance) by which biocontrol yeasts exert their activity as plant protection agents. In a second part, we focus on five yeast species (Candida oleophila, Aureobasidium pullulans, Metschnikowia fructicola, Cryptococcus albidus, Saccharomyces cerevisiae) that are or have been registered for the application as biocontrol products. These examples demonstrate the potential of yeasts for commercial biocontrol usage, but this review also highlights the scarcity of fundamental studies on yeast biocontrol mechanisms and of registered yeast-based biocontrol products. Yeast biocontrol mechanisms thus represent a largely unexplored field of research and plentiful opportunities for the development of commercial, yeast-based applications for plant protection exist.
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Affiliation(s)
- Florian M Freimoser
- Agroscope, Research Division Plant Protection, Müller-Thurgau-Strasse 29, 8820, Wädenswil, Switzerland.
| | - Maria Paula Rueda-Mejia
- Agroscope, Research Division Plant Protection, Müller-Thurgau-Strasse 29, 8820, Wädenswil, Switzerland
| | - Bruno Tilocca
- Dipartimento di Agraria, Università degli Studi di Sassari, Viale Italia 39, 07100, Sassari, Italy
- Department of Health Sciences, University "Magna Græcia" of Catanzaro, Viale Europa, 88100, Catanzaro, Italy
| | - Quirico Migheli
- Dipartimento di Agraria, Università degli Studi di Sassari, Viale Italia 39, 07100, Sassari, Italy
- Istituto Nazionale di Biostrutture e Biosistemi and NRD - Nucleo di Ricerca sulla Desertificazione, Università degli Studi di Sassari, Viale Italia 39, 07100, Sassari, Italy
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Guimarães A, Abrunhosa L, Pastrana LM, Cerqueira MA. Edible Films and Coatings as Carriers of Living Microorganisms: A New Strategy Towards Biopreservation and Healthier Foods. Compr Rev Food Sci Food Saf 2018; 17:594-614. [PMID: 33350124 DOI: 10.1111/1541-4337.12345] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 02/07/2018] [Accepted: 02/16/2018] [Indexed: 01/23/2023]
Abstract
Edible films and coatings have been extensively studied in recent years due to their unique properties and advantages over more traditional conservation techniques. Edible films and coatings improve shelf life and food quality, by providing a protective barrier against physical and mechanical damage, and by creating a controlled atmosphere and acting as a semipermeable barrier for gases, vapor, and water. Edible films and coatings are produced using naturally derived materials, such as polysaccharides, proteins, and lipids, or a mixture of these materials. These films and coatings also offer the possibility of incorporating different functional ingredients such as nutraceuticals, antioxidants, antimicrobials, flavoring, and coloring agents. Films and coatings are also able to incorporate living microorganisms. In the last decade, several works reported the incorporation of bacteria to confer probiotic or antimicrobial properties to these films and coatings. The incorporation of probiotic bacteria in films and coatings allows them to reach the consumers' gut in adequate amounts to confer health benefits to the host, thus creating an added value to the food product. Also, other microorganisms, either bacteria or yeast, can be incorporated into edible films in a biocontrol approach to extend the shelf life of food products. The incorporation of yeasts in films and coatings has been suggested primarily for the control of the postharvest disease. This work provides a comprehensive review of the use of edible films and coatings for the incorporation of living microorganisms, aiming at the biopreservation and probiotic ability of food products.
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Affiliation(s)
- Ana Guimarães
- Centre of Biological Engineering, Univ. of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Luís Abrunhosa
- Centre of Biological Engineering, Univ. of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Lorenzo M Pastrana
- Intl. Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330 Braga, Portugal
| | - Miguel A Cerqueira
- Intl. Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330 Braga, Portugal
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Danilovich ME, Sánchez LA, Acosta F, Delgado OD. Antarctic bioprospecting: in pursuit of microorganisms producing new antimicrobials and enzymes. Polar Biol 2018. [DOI: 10.1007/s00300-018-2295-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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10
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Production, Characterization, and Antimicrobial Activity of Mycocin Produced by Debaryomyces hansenii DSMZ70238. Int J Microbiol 2017; 2017:2605382. [PMID: 28757872 PMCID: PMC5512030 DOI: 10.1155/2017/2605382] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Revised: 04/25/2017] [Accepted: 05/21/2017] [Indexed: 11/29/2022] Open
Abstract
The present study was conducted to estimate the antimicrobial activity and the potential biological control of the killer toxin produced by D. hansenii DSMZ70238 against several pathogenic microorganisms. In this study, the effects of NaCl, pH, and temperature, killer toxin production, and antimicrobial activity were studied. The results showed that the optimum inhibitory effect of killer toxin was at 8% NaCl, and the diameters of clear zones were 20, 22, 22, 21, 14, and 13 mm for Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, Streptococcus pyogenes, Candida albicans, and Candida neoformans, respectively. The largest inhibition zones were observed at pH 4.5 with inhibition zone of 16, 18, 17, 18, 11, and 12 mm for the same microorganisms. The results also showed that 25°C is the optimal temperature for toxin killing activity against all targeted microorganisms. In addition, the activity of killer toxin significantly inhibited the growth of fungal mycelia for all target pathogenic fungi and the percentages of inhibition were 47.77, 48.88, 52.22, and 61.11% for Trichophyton rubrum, Alternaria alternata, Trichophyton concentricum, and Curvularia lunata, respectively. The results showed the highest growth rate of D. hansenii DSMZ70238 under condition of 8% NaCl concentration, pH 4.5, and 25°C for 72 h.
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Biocontrol of ochratoxigenic moulds ( Aspergillus ochraceus and Penicillium nordicum ) by Debaryomyces hansenii and Saccharomycopsis fibuligera during speck production. Food Microbiol 2017; 62:188-195. [DOI: 10.1016/j.fm.2016.10.017] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2015] [Revised: 10/03/2016] [Accepted: 10/08/2016] [Indexed: 11/19/2022]
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Prista C, Michán C, Miranda IM, Ramos J. The halotolerant Debaryomyces hansenii, the Cinderella of non-conventional yeasts. Yeast 2016; 33:523-533. [PMID: 27279567 DOI: 10.1002/yea.3177] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 05/10/2016] [Accepted: 05/10/2016] [Indexed: 11/10/2022] Open
Abstract
Debaryomyces hansenii is a halotolerant yeast with a high biotechnological potential, particularly in the food industry. However, research in this yeast is limited by its molecular peculiarities. In this review we summarize the state of the art of research in this microorganisms, describing both pros and cons. We discuss (i) its halotolerance, (ii) the molecular factors involved in saline and osmotic stress, (iii) its high gene density and ambiguous CUG decoding, and (iv) its biotechnological and medical interests. We trust that all the bottlenecks in its study will soon be overcome and D. hansenii will become a fundamental organism for food biotechnological processes. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Catarina Prista
- LEAF - Research Centre Linking Landscape, Environment, Agriculture and Food, Instituto Superior de Agronomia, Universidade de Lisboa, Lisbon, 1649-003, Portugal
| | - Carmen Michán
- Departamento de Bioquímica y Biología Molecular, Campus de Rabanales, Universidad de Córdoba, 14071, Córdoba, Spain
| | - Isabel M Miranda
- Department of Microbiology, Faculty of Medicine, University of Porto, Porto, Portugal.,CINTESIS - Centre for Health Technology and Services Research, Faculty of Medicine of the University of Porto, Portugal
| | - José Ramos
- Departamento de Microbiología, Campus de Rabanales, Universidad de Córdoba, 14071, Córdoba, Spain.
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Banjara N, Nickerson KW, Suhr MJ, Hallen-Adams HE. Killer toxin from several food-derived Debaryomyces hansenii strains effective against pathogenic Candida yeasts. Int J Food Microbiol 2016; 222:23-9. [PMID: 26828815 DOI: 10.1016/j.ijfoodmicro.2016.01.016] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 01/13/2016] [Accepted: 01/23/2016] [Indexed: 11/17/2022]
Abstract
Candida yeasts are the dominant fungi in the healthy human microbiome, but are well-known for causing disease following a variety of perturbations. Evaluation of fungal populations from the healthy human gut revealed a significant negative correlation between the foodborne yeast, Debaryomyces hansenii, and Candida species. D. hansenii is reported to produce killer toxins (mycocins) effective against other yeast species. In order to better understand this phenomenon, a collection of 42 D. hansenii isolates was obtained from 22 cheeses and evaluated for killer activity against Candida albicans and Candida tropicalis over a range of temperatures and pH values. Twenty three strains demonstrated killer activity against both C. albicans and C. tropicalis, which was pH- and temperature-dependent, with no killer activity observed for any strain at pH6.5 or higher, or at ≥ 35 °C (physiological conditions in the human gastrointestinal tract). A cell-free mycocin preparation showed transient killer activity against C. albicans at 35 °C and a cheese sample containing a killer D. hansenii strain demonstrated sustained killer activity against both C. albicans and C. tropicalis. Together, these observations raise the possibility that D. hansenii could influence Candida populations in the gut.
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Affiliation(s)
- Nabaraj Banjara
- Department of Food Science and Technology, University of Nebraska-Lincoln, 1901 North 21st St, Lincoln, NE 68588-6205, USA
| | - Kenneth W Nickerson
- Department of Biological Sciences, University of Nebraska-Lincoln, 1901 Vine St, Lincoln, NE 68588-0665, USA
| | - Mallory J Suhr
- Department of Food Science and Technology, University of Nebraska-Lincoln, 1901 North 21st St, Lincoln, NE 68588-6205, USA
| | - Heather E Hallen-Adams
- Department of Food Science and Technology, University of Nebraska-Lincoln, 1901 North 21st St, Lincoln, NE 68588-6205, USA.
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Núñez F, Lara MS, Peromingo B, Delgado J, Sánchez-Montero L, Andrade MJ. Selection and evaluation of Debaryomyces hansenii isolates as potential bioprotective agents against toxigenic penicillia in dry-fermented sausages. Food Microbiol 2015; 46:114-120. [DOI: 10.1016/j.fm.2014.07.019] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Revised: 07/22/2014] [Accepted: 07/26/2014] [Indexed: 10/24/2022]
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Liébana R, Arregui L, Belda I, Gamella L, Santos A, Marquina D, Serrano S. Membrane bioreactor wastewater treatment plants reveal diverse yeast and protist communities of potential significance in biofouling. BIOFOULING 2015; 31:71-82. [PMID: 25588128 DOI: 10.1080/08927014.2014.998206] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The yeast community was studied in a municipal full-scale membrane bioreactor wastewater treatment plant (MBR-WWTP). The unexpectedly high diversity of yeasts indicated that the activated sludge formed a suitable environment for them to proliferate, with cellular concentrations of 2.2 ± 0.8 × 10(3) CFU ml(-1). Sixteen species of seven genera were present in the biological reactor, with Ascomycetes being the most prevalent group (93%). Most isolates were able to grow in a synthetic wastewater medium, adhere to polyethylene surfaces, and develop biofilms of variable complexity. The relationship between yeast populations and the protists in the MBR-WWTP was also studied, revealing that some protist species preyed on and ingested yeasts. These results suggest that yeast populations may play a role in the food web of a WWTP and, to some extent, contribute to membrane biofouling in MBR systems.
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Affiliation(s)
- Raquel Liébana
- a Department of Microbiology III , Complutense University , Madrid , Spain
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16
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Andrade MJ, Thorsen L, Rodríguez A, Córdoba JJ, Jespersen L. Inhibition of ochratoxigenic moulds by Debaryomyces hansenii strains for biopreservation of dry-cured meat products. Int J Food Microbiol 2014; 170:70-7. [DOI: 10.1016/j.ijfoodmicro.2013.11.004] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Revised: 10/29/2013] [Accepted: 11/04/2013] [Indexed: 01/09/2023]
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17
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Liu GL, Chi Z, Wang GY, Wang ZP, Li Y, Chi ZM. Yeast killer toxins, molecular mechanisms of their action and their applications. Crit Rev Biotechnol 2013; 35:222-34. [DOI: 10.3109/07388551.2013.833582] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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18
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Liu GL, Wang K, Hua MX, Buzdar MA, Chi ZM. Purification and characterization of the cold-active killer toxin from the psychrotolerant yeast Mrakia frigida isolated from sea sediments in Antarctica. Process Biochem 2012. [DOI: 10.1016/j.procbio.2012.02.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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19
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Virgili R, Simoncini N, Toscani T, Camardo Leggieri M, Formenti S, Battilani P. Biocontrol of Penicillium nordicum growth and ochratoxin A production by native yeasts of dry cured ham. Toxins (Basel) 2012; 4:68-82. [PMID: 22474567 PMCID: PMC3317108 DOI: 10.3390/toxins4020068] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2011] [Revised: 01/18/2012] [Accepted: 01/20/2012] [Indexed: 11/20/2022] Open
Abstract
Twelve yeast strains isolated from the surface of Italian typical dry-cured hams, belonging to D. hansenii, D. maramus, C. famata, C. zeylanoides and H. burtonii species, and previously selected for their ability to grow in dry-cured ham-like substrates, were screened for antagonistic activity against a toxigenic strain of P. nordicum and inhibition of ochratoxin A (OTA) biosynthesis. On average, yeast inhibitory activity was lowered by increasing fungal inoculum and enhanced by NaCl presence. In the assay conditions, H. burtonii and C. zeylanoides were the most effective, both in inhibiting P. nordicum growth and OTA production. D. hansenii was the species with the lowest inhibitory activity, especially in the absence of salt. OTA production dropped from the range < LOD - 5000 ppb in P. nordicum control plates to the range < LOD - 200 ppb in yeast-added plates. OTA production increased in the presence of NaCl in P. nordicum control plates, while salt enhanced inhibition against OTA production in yeast-added plates.
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Affiliation(s)
- Roberta Virgili
- Stazione Sperimentale per l’Industria delle Conserve Alimentari, V.le F. Tanara, 31/A, Parma 43121, Italy; (N.S.); (T.T.)
| | - Nicoletta Simoncini
- Stazione Sperimentale per l’Industria delle Conserve Alimentari, V.le F. Tanara, 31/A, Parma 43121, Italy; (N.S.); (T.T.)
| | - Tania Toscani
- Stazione Sperimentale per l’Industria delle Conserve Alimentari, V.le F. Tanara, 31/A, Parma 43121, Italy; (N.S.); (T.T.)
| | - Marco Camardo Leggieri
- Institute of Entomology and Plant Pathology, Università Cattolica del Sacro Cuore, Via Emilia Parmense, 84, Piacenza I29100, Italy; (M.C.L.); (S.F.); (P.B.)
| | - Silvia Formenti
- Institute of Entomology and Plant Pathology, Università Cattolica del Sacro Cuore, Via Emilia Parmense, 84, Piacenza I29100, Italy; (M.C.L.); (S.F.); (P.B.)
| | - Paola Battilani
- Institute of Entomology and Plant Pathology, Università Cattolica del Sacro Cuore, Via Emilia Parmense, 84, Piacenza I29100, Italy; (M.C.L.); (S.F.); (P.B.)
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20
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Wang XX, Chi Z, Peng Y, Wang XH, Ru SG, Chi ZM. Purification, characterization and gene cloning of the killer toxin produced by the marine-derived yeast Williopsis saturnus WC91-2. Microbiol Res 2011; 167:558-63. [PMID: 22209575 DOI: 10.1016/j.micres.2011.12.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2011] [Revised: 12/01/2011] [Accepted: 12/04/2011] [Indexed: 11/19/2022]
Abstract
As the killer toxin produced by Williopsis saturnus WC91-2 could kill many sensitive yeast strains, including the pathogenic ones, the extracellular killer toxin in the supernatant of cell culture of the marine yeast strain was purified and characterized. The molecular mass of the purified killer toxin was estimated to be 11.0 kDa according to the data from SDS-PAGE. The purified killer toxin had killing activity, but could not hydrolyze laminarin. The optimal conditions for action of the purified killer toxin against the pathogenic yeast Metschnikowia bicuspidate WCY were the assay medium with 10% NaCl, pH 3-3.5 and temperature 16 °C. The gene encoding the killer toxin from the marine killer yeast WC91-2 was cloned and the ORF of the gene was 378 bp. The deduced protein from the cloned gene encoding the killer toxin had 125 amino acids with calculated molecular weight of 11.6 kDa. It was also found that the N-terminal amino acid sequence of the purified killer toxin had the same corresponding sequence deduced from the cloned killer toxin gene in this marine yeast, confirming that the purified killer toxin was indeed encoded by the cloned gene.
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Affiliation(s)
- Xing-Xing Wang
- UNESCO Chinese Center of Marine Biotechnology and Institute of Marine Biodiversity and Evolution, Ocean University of China, Yushan Road, No. 5, Qingdao, China
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21
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Buzdar MA, Chi Z, Wang Q, Hua MX, Chi ZM. Production, purification, and characterization of a novel killer toxin from Kluyveromyces siamensis against a pathogenic yeast in crab. Appl Microbiol Biotechnol 2011; 91:1571-9. [DOI: 10.1007/s00253-011-3220-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2011] [Revised: 02/23/2011] [Accepted: 02/24/2011] [Indexed: 10/18/2022]
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22
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Production of a novel and cold-active killer toxin by Mrakia frigida 2E00797 isolated from sea sediment in Antarctica. Extremophiles 2010; 14:515-21. [PMID: 20972898 DOI: 10.1007/s00792-010-0331-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2010] [Accepted: 10/07/2010] [Indexed: 10/18/2022]
Abstract
The psychrotolerant yeast Mrakia frigida 2E00797 isolated from sea sediment in Antarctica was found to be able to produce killer toxin against the pathogenic yeast (Metschnikowia bicuspidata WCY) in crab. When the psychrotolerant yeast was grown in the medium with pH 4.5 and 3.0% (wt/vol) NaCl and at 15°C, it could produce the highest amount of killer toxin against the pathogenic yeast M. bicuspidata WCY. The crude killer toxin activity against the pathogenic yeast M. bicuspidata WCY was the highest when it grew at 15°C in the assay medium with 3.0% (wt/vol) NaCl and pH 4.5. At temperatures higher than 25°C, the killing activity produced by M. frigida 2E00797 was completely lost and after the crude killer toxin was pre-incubated at temperatures higher than 40°C for 4 h, the killing activity was also completely lost. The killer toxin produced by M. frigida 2E00797 could kill only M. bicuspidata WCY, Candida tropicalis and Candida albicans among all the fungal species and bacterial species tested in this study.
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Hernández A, Martín A, Córdoba MG, Benito MJ, Aranda E, Pérez-Nevado F. Determination of killer activity in yeasts isolated from the elaboration of seasoned green table olives. Int J Food Microbiol 2008; 121:178-88. [DOI: 10.1016/j.ijfoodmicro.2007.11.044] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2007] [Revised: 07/31/2007] [Accepted: 11/06/2007] [Indexed: 10/22/2022]
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24
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Wang X, Chi Z, Yue L, Li J, Li M, Wu L. A marine killer yeast against the pathogenic yeast strain in crab (Portunus trituberculatus) and an optimization of the toxin production. Microbiol Res 2007; 162:77-85. [PMID: 17188476 DOI: 10.1016/j.micres.2006.09.002] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2006] [Revised: 08/29/2006] [Accepted: 09/14/2006] [Indexed: 11/17/2022]
Abstract
A pathogenic yeast strain WCY which could cause milky disease in Portunus trituberculatus was identified to be Metschnikowia bicuspidate according to the results of routine yeast identification and 18S rDNA and ITS sequences. After screening of more than 300 yeast strains from different sources in marine environments, it was found that strain YF07b had the highest ability to produce killer toxin against the pathogenic yeast. Strain YF07b was identified to be Pichia anomala according to the results of routine yeast identification and 18S rDNA and ITS sequences. The optimal conditions for killer toxin production by strain YF07b were the production medium with 2.0% NaCl, pH 4.5, cultivation temperature of 20 degrees C and the optimal conditions for action of the crude killer toxin against the pathogenic yeast were the assay medium with 6.0% NaCl, pH 4.5 and temperature 15 degrees C.
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MESH Headings
- Animals
- Antibiosis
- Brachyura/microbiology
- Culture Media/chemistry
- DNA, Fungal/chemistry
- DNA, Fungal/isolation & purification
- DNA, Ribosomal/chemistry
- DNA, Ribosomal/isolation & purification
- DNA, Ribosomal Spacer/genetics
- Genes, rRNA
- Hydrogen-Ion Concentration
- Molecular Sequence Data
- Mycotoxins/biosynthesis
- Mycotoxins/isolation & purification
- Mycotoxins/toxicity
- Phylogeny
- RNA, Fungal/genetics
- RNA, Ribosomal, 18S/genetics
- Saccharomycetales/drug effects
- Saccharomycetales/genetics
- Saccharomycetales/isolation & purification
- Saccharomycetales/metabolism
- Sequence Analysis, DNA
- Sodium Chloride
- Temperature
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Affiliation(s)
- Xianghong Wang
- UNESCO Chinese Center of Marine Biotechnology, Ocean University of China, Yushan Road, No. 5, Qingdao, PR China
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25
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Breuer U, Harms H. Debaryomyces hansenii — an extremophilic yeast with biotechnological potential. Yeast 2006; 23:415-37. [PMID: 16652409 DOI: 10.1002/yea.1374] [Citation(s) in RCA: 202] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
We illuminate the ecological, physiological and genetic characteristics of the yeast Debaryomyces hansenii in the view of our belief that this metabolically versatile, non-pathogenic, osmotolerant and oleaginous microorganism represents an attractive target for fundamental and applied biotechnological research. To this end, we give a broad overview of extant biotechnological procedures using D. hansenii, e.g. in the manufacture of various foods, and propose research into the heterologous synthesis of a range of fine chemicals.
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Affiliation(s)
- Uta Breuer
- UFZ-Centre of Environmental Research Leipzig-Halle, Department of Environmental Microbiology, Permoserstrasse 15, D-04318 Leipzig, Germany.
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26
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Santos A, Marquina D. Killer toxin of Pichia membranifaciens and its possible use as a biocontrol agent against grey mould disease of grapevine. MICROBIOLOGY-SGM 2004; 150:2527-2534. [PMID: 15289549 DOI: 10.1099/mic.0.27071-0] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The use of Pichia membranifaciens CYC 1106 killer toxin against Botrytis cinerea was investigated. This strain exerted a broad-specificity killing action against other yeasts and fungi. At pH 4, optimal killer activity was observed at temperatures up to 20 degrees C. At 25 degrees C the toxic effect was reduced to 70%. The killer activity was higher in acidic medium. Above about pH 4.5 activity decreased sharply and was barely noticeable at pH 6. The killer toxin protein from P. membranifaciens CYC 1106 was purified to electrophoretic homogeneity. SDS-PAGE of the purified killer protein indicated an apparent molecular mass of 18 kDa. Killer toxin production was stimulated in the presence of non-ionic detergents. The toxin concentrations present in the supernatant during optimal production conditions exerted a fungicidal effect on a strain of B. cinerea. The symptoms of infection and grey mould observed in Vitis vinifera plants treated with B. cinerea were prevented in the presence of purified P. membranifaciens killer toxin. The results obtained suggest that P. membranifaciens CYC 1106 killer toxin is of potential use in the biocontrol of B. cinerea.
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Affiliation(s)
- A Santos
- Department of Microbiology, Biology Faculty, Complutense University of Madrid, Madrid 28040, Spain
| | - D Marquina
- Department of Microbiology, Biology Faculty, Complutense University of Madrid, Madrid 28040, Spain
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27
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Current awareness. Yeast 2002; 19:903-8. [PMID: 12112243 DOI: 10.1002/yea.826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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