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Yarzábal Rodríguez LA, Álvarez Gutiérrez PE, Gunde-Cimerman N, Ciancas Jiménez JC, Gutiérrez-Cepeda A, Ocaña AMF, Batista-García RA. Exploring extremophilic fungi in soil mycobiome for sustainable agriculture amid global change. Nat Commun 2024; 15:6951. [PMID: 39138171 PMCID: PMC11322326 DOI: 10.1038/s41467-024-51223-x] [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: 01/29/2024] [Accepted: 07/24/2024] [Indexed: 08/15/2024] Open
Abstract
As the Earth warms, alternatives to traditional farming are crucial. Exploring fungi, especially poly extremophilic and extremotolerant species, to be used as plant probiotics, represents a promising option. Extremophilic fungi offer avenues for developing and producing innovative biofertilizers, effective biocontrol agents against plant pathogens, and resilient enzymes active under extreme conditions, all of which are crucial to enhance agricultural efficiency and sustainability through improved soil fertility and decreased reliance on agrochemicals. Yet, extremophilic fungi's potential remains underexplored and, therefore, comprehensive research is needed to understand their roles as tools to foster sustainable agriculture practices amid climate change. Efforts should concentrate on unraveling the complex dynamics of plant-fungi interactions and harnessing extremophilic fungi's ecological functions to influence plant growth and development. Aspects such as plant's epigenome remodeling, fungal extracellular vesicle production, secondary metabolism regulation, and impact on native soil microbiota are among many deserving to be explored in depth. Caution is advised, however, as extremophilic and extremotolerant fungi can act as both mitigators of crop diseases and as opportunistic pathogens, underscoring the necessity for balanced research to optimize benefits while mitigating risks in agricultural settings.
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Grants
- This work was supported by Fondo Nacional de Innovación y Desarrollo Científico-Tecnológico (FONDOCYT), Ministerio de Educación Superior, Ciencia y Tecnología (MESCYT), Government of Dominican Republic: Project COD. 2022-2B2-078. This work was supported by Darwin Initiative Round 27: Partnership Project DARPP220, and Darwin Initiative Round 30: Project DIR30S2/1004. This study was also supported by funding from the Slovenian Research Agency to Infrastructural Centre Mycosmo (MRIC UL, I0-0022), programs P4-0432 and P1-0198. Authors appreciate the support received from the European Commission – Program H2020, Project GEN4OLIVE: 101000427, Topic SFS-28-2018-2019-2020 Genetic resources and pre-breeding communities. RAB-G received a Sabbatical fellowship (CVU: 389616) from the National Council of Humanities, Sciences and Technologies (CONAHCyT), Government of Mexico. This work was supported by RYC2022-037554-I project funded by MCIN/AEI/10.13039/501100011033 and FSE+.
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Affiliation(s)
- Luis Andrés Yarzábal Rodríguez
- Carrera de Bioquímica y Farmacia. Grupo de Microbiología Molecular y Biotecnología (GI-M2YB). Unidad de Salud y Bienestar, Universidad Católica de Cuenca, Cuenca, Ecuador
| | | | - Nina Gunde-Cimerman
- Departament of Biology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | | | - Adrián Gutiérrez-Cepeda
- Instituto de Investigación en Salud, Facultad de Ciencias de la Salud, Universidad Autónoma de Santo Domingo, Santo Domingo, Dominican Republic
- Instituto de Química, Facultad de Ciencias, Universidad Autónoma de Santo Domingo, Santo Domingo, Dominican Republic
| | - Ana María Fernández Ocaña
- Departamento de Biología Animal, Biología Vegetal y Ecología. Facultad de Ciencias Experimentales, Universidad de Jaén, Jaén, Spain
| | - Ramón Alberto Batista-García
- Departamento de Biología Animal, Biología Vegetal y Ecología. Facultad de Ciencias Experimentales, Universidad de Jaén, Jaén, Spain.
- Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, Mexico.
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Agarbati A, Moretti L, Canonico L, Ciani M, Comitini F. Agro-ecosystem of honeybees as source for native probiotic yeasts. World J Microbiol Biotechnol 2024; 40:147. [PMID: 38538981 PMCID: PMC10972988 DOI: 10.1007/s11274-024-03941-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 02/25/2024] [Indexed: 04/28/2024]
Abstract
Probiotic microorganisms are used to improve the health and wellness of people and the research on this topic is of current relevance and interest. Fifty-five yeasts, coming from honeybee's ecosystem and belonging to Candida, Debaryomyces, Hanseniaspora, Lachancea, Metschnikowia, Meyerozyma, Starmerella and Zygosacchromyces genera and related different species, were evaluated for the probiotic traits. The resistance to gastrointestinal conditions, auto-aggregation, cell surface hydrophobicity or biofilm formation abilities as well as antimicrobial activity against common human pathogenic bacteria were evaluated. The safety analysis of strains was also carried out to exclude any possible negative effect on the consumer's health. The influence of proteinase treatment of living yeasts and their adhesion to Caco-2 cells were also evaluated. The greatest selection occurred in the first step of survival at the acidic pH and in the presence of bile salts, where more than 50% of the strains were unable to survive. Equally discriminating was the protease test which allowed the survival of only 27 strains belonging to the species Hanseniaspora guilliermondii, Hanseniaspora uvarum, Metschnikowia pulcherrima, Metschnikowia ziziphicola, Meyerozyma caribbica, Meyerozyma guilliermondii, Pichia kluyveri, Pichia kudriavzevii and Pichia terricola. An integrated analysis of the results obtained allowed the detection of seven yeast strains with probiotic aptitudes, all belonging to the Meyerozyma genus, of which three belonging to M. guillermondii and four belonging to M. caribbica species.
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Affiliation(s)
- Alice Agarbati
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Via Brecce Bianche, 60131, Ancona, Italy
| | - Laura Moretti
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Via Brecce Bianche, 60131, Ancona, Italy
| | - Laura Canonico
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Via Brecce Bianche, 60131, Ancona, Italy
| | - Maurizio Ciani
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Via Brecce Bianche, 60131, Ancona, Italy
| | - Francesca Comitini
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Via Brecce Bianche, 60131, Ancona, Italy.
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da Silva RNA, Magalhães-Guedes KT, de Oliveira Alves RM, Souza AC, Schwan RF, Umsza-Guez MA. Yeast Diversity in Honey and Pollen Samples from Stingless Bees in the State of Bahia, Brazil: Use of the MALDI-TOF MS/Genbank Proteomic Technique. Microorganisms 2024; 12:678. [PMID: 38674622 PMCID: PMC11052259 DOI: 10.3390/microorganisms12040678] [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: 01/30/2024] [Revised: 02/26/2024] [Accepted: 02/27/2024] [Indexed: 04/28/2024] Open
Abstract
(1) Background: The identification of microorganisms includes traditional biochemical methods, molecular biology methods evaluating the conserved regions of rRNA, and the molecular biology of proteins (proteomics), such as MALDI-TOF MS mass spectrometry. This work aimed to identify the biodiversity of yeasts associated with stingless bee species' honey and pollen, Melipona scutellaris, Nannotrigona testaceicornes, and Tetragonisca angustula, from the region of São Gonçalo dos Campos-Bahia (BA) state, Brazil. (2) Methods: Cellular proteins were extracted from 2837 microbial isolates (pollen and honey) and identified via MALDI-TOF MS. The identified yeast species were also compared to the mass spectra of taxonomically well-characterized reference strains, available from the National Center of Biotechnology Information (NCBI) database. (3) Results: Nine yeast species were identified: Candida maltosa, Candida norvegica, Kazachstania telluris, Schizosaccharomyces pombe, Scheffersomyces insectosus, Meyerozyma guilliermondii, Brettanomyces bruxellensis, Kazachstania exigua, and Starmerella lactis-condensi. Nannotrigona testaceicornes pollen had the highest number of yeast colonies. The yeasts Brettanomyces bruxellensis and Kazachstania telluris showed high populations in the samples of Nannotrigona testaceicornes and Melipona scutellaris, respectively. This work shows that there is some sharing of the same species of yeast between honey and pollen from the same beehive. (4) Conclusions: A total of 71.84% of the identified species present a high level of confidence at the species level. Eight yeast species (Candida maltosa, Candida norvegica, Kazachstania telluris, Schizosaccharomyces pombe, Scheffersomyces insectosus, Meyerozyma guilliermondii, Kazachstania exigua, and Starmerella lactis-condensi) were found for the first time in the samples that the authors inspected. This contributes to the construction of new knowledge about the diversity of yeasts associated with stingless bee products, as well as to the possibility of the biotechnological application of some yeast species.
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Affiliation(s)
| | | | | | - Angélica Cristina Souza
- Department of Biology, Microbiology Sector, Federal University of Lavras, Lavras 37200-900, Brazil; (A.C.S.); (R.F.S.)
| | - Rosane Freitas Schwan
- Department of Biology, Microbiology Sector, Federal University of Lavras, Lavras 37200-900, Brazil; (A.C.S.); (R.F.S.)
| | - Marcelo Andrés Umsza-Guez
- Food Science Postgraduate Program, Faculty of Pharmacy, Federal University of Bahia, Salvador 40170-100, Brazil;
- Biotechnology Department, Federal University of Bahia, Salvador 40110-902, Brazil
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4
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Peña A, Sánchez NS, Padilla-Garfias F, Ramiro-Cortés Y, Araiza-Villanueva M, Calahorra M. The Use of Thioflavin T for the Estimation and Measurement of the Plasma Membrane Electric Potential Difference in Different Yeast Strains. J Fungi (Basel) 2023; 9:948. [PMID: 37755056 PMCID: PMC10532974 DOI: 10.3390/jof9090948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 08/30/2023] [Accepted: 09/04/2023] [Indexed: 09/28/2023] Open
Abstract
The use of the cationic, dye thioflavin T (ThT), to estimate the electric plasma membrane potential difference (PMP) via the fluorescence changes and to obtain its actual values from the accumulation of the dye, considering important correction factors by its binding to the internal components of the cell, was described previously for baker's yeast. However, it was considered important to explore whether the method developed could be applied to other yeast strains. Alternative ways to estimate the PMP by using flow cytometry and a multi-well plate reader are also presented here. The methods were tested with other strains of Saccharomyces cerevisiae (W303-1A and FY833), as well as with non-conventional yeasts: Debaryomyces hansenii, Candida albicans, Meyerozyma guilliermondii, and Rhodotorula mucilaginosa. Results of the estimation of the PMP via the fluorescence changes under different conditions were adequate with all strains. Consistent results were also obtained with several mutants of the main monovalent transporters, validating ThT as a monitor for PMP estimation.
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Affiliation(s)
- Antonio Peña
- Departamento de Genética Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, México City 04510, Mexico; (F.P.-G.); (M.A.-V.); (M.C.)
| | - Norma Silvia Sánchez
- Departamento de Genética Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, México City 04510, Mexico; (F.P.-G.); (M.A.-V.); (M.C.)
| | - Francisco Padilla-Garfias
- Departamento de Genética Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, México City 04510, Mexico; (F.P.-G.); (M.A.-V.); (M.C.)
| | - Yazmín Ramiro-Cortés
- Departamento de Neurodesarrollo y Fisiología, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, México City 04510, Mexico;
| | - Minerva Araiza-Villanueva
- Departamento de Genética Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, México City 04510, Mexico; (F.P.-G.); (M.A.-V.); (M.C.)
| | - Martha Calahorra
- Departamento de Genética Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, México City 04510, Mexico; (F.P.-G.); (M.A.-V.); (M.C.)
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Comitini F, Canonico L, Agarbati A, Ciani M. Biocontrol and Probiotic Function of Non- Saccharomyces Yeasts: New Insights in Agri-Food Industry. Microorganisms 2023; 11:1450. [PMID: 37374952 DOI: 10.3390/microorganisms11061450] [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: 04/29/2023] [Revised: 05/27/2023] [Accepted: 05/28/2023] [Indexed: 06/29/2023] Open
Abstract
Fermented food matrices, including beverages, can be defined as the result of the activity of complex microbial ecosystems where different microorganisms interact according to different biotic and abiotic factors. Certainly, in industrial production, the technological processes aim to control the fermentation to place safe foods on the market. Therefore, if food safety is the essential prerogative, consumers are increasingly oriented towards a healthy and conscious diet driving the production and consequently the applied research towards natural processes. In this regard, the aim to guarantee the safety, quality and diversity of products should be reached limiting or avoiding the addition of antimicrobials or synthetic additives using the biological approach. In this paper, the recent re-evaluation of non-Saccharomyces yeasts (NSYs) has been reviewed in terms of bio-protectant and biocontrol activity with a particular focus on their antimicrobial power using different application modalities including biopackaging, probiotic features and promoting functional aspects. In this review, the authors underline the contribution of NSYs in the food production chain and their role in the technological and fermentative features for their practical and useful use as a biocontrol agent in food preparations.
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Affiliation(s)
- Francesca Comitini
- Dipartimento di Scienze della Vita e dell'Ambiente (DiSVA), Università Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy
| | - Laura Canonico
- Dipartimento di Scienze della Vita e dell'Ambiente (DiSVA), Università Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy
| | - Alice Agarbati
- Dipartimento di Scienze della Vita e dell'Ambiente (DiSVA), Università Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy
| | - Maurizio Ciani
- Dipartimento di Scienze della Vita e dell'Ambiente (DiSVA), Università Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy
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6
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Buela L, Cuenca M, Sarmiento J, Peláez D, Mendoza AY, Cabrera EJ, Yarzábal LA. Role of Guinea Pigs (Cavia porcellus) Raised as Livestock in Ecuadorian Andes as Reservoirs of Zoonotic Yeasts. Animals (Basel) 2022; 12:ani12243449. [PMID: 36552369 PMCID: PMC9774381 DOI: 10.3390/ani12243449] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 11/10/2022] [Accepted: 11/14/2022] [Indexed: 12/12/2022] Open
Abstract
Guinea pigs (Cavia porcellus) have been reared for centuries in the Andean region for ceremonial purposes or as the main ingredient of traditional foods. The animals are kept in close proximity of households and interact closely with humans; this also occurs in western countries, where guinea pigs are considered pets. Even though it is acknowledged that domestic animals carry pathogenic yeasts in their tissues and organs that can cause human diseases, almost nothing is known in the case of guinea pigs. In this work we used traditional microbiological approaches and molecular biology techniques to isolate, identify, and characterize potentially zoonotic yeasts colonizing the nasal duct of guinea pigs raised as livestock in Southern Ecuador (Cañar Province). Our results show that 44% of the 100 animals studied were colonized in their nasal mucosa by at least eleven yeast species, belonging to eight genera: Wickerhamomyces, Diutina, Meyerozyma, Candida, Pichia, Rhodotorula, Galactomyces, and Cryptococcus. Noticeably, several isolates were insensitive toward several antifungal drugs of therapeutic use, including fluconazole, voriconazole, itraconazole, and caspofungin. Together, our results emphasize the threat posed by these potentially zoonotic yeasts to the farmers, their families, the final consumers, and, in general, to public and animal health.
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Affiliation(s)
- Lenys Buela
- Carrera de Bioquímica y Farmacia, Unidad Académica de Salud y Bienestar, Universidad Católica de Cuenca, Av. Las Américas, Cuenca 010101, Ecuador
| | - Mercy Cuenca
- Carrera de Medicina Veterinaria, Unidad Académica de Ciencias Agropecuarias, Universidad Católica de Cuenca, Av. Las Américas, Cuenca 010101, Ecuador
| | - Jéssica Sarmiento
- Carrera de Odontología, Unidad Académica de Salud y Bienestar, Universidad Católica de Cuenca, Av. Las Américas, Cuenca 010101, Ecuador
| | - Diana Peláez
- Centro de Investigación, Innovación y Transferencia de Tecnología (CIITT), Universidad Católica de Cuenca, Ricaurte 010162, Ecuador
| | - Ana Yolanda Mendoza
- Carrera de Bioquímica y Farmacia, Unidad Académica de Salud y Bienestar, Universidad Católica de Cuenca, Av. Las Américas, Cuenca 010101, Ecuador
| | - Erika Judith Cabrera
- Carrera de Bioquímica y Farmacia, Unidad Académica de Salud y Bienestar, Universidad Católica de Cuenca, Av. Las Américas, Cuenca 010101, Ecuador
| | - Luis Andrés Yarzábal
- Carrera de Bioquímica y Farmacia, Unidad Académica de Salud y Bienestar, Universidad Católica de Cuenca, Av. Las Américas, Cuenca 010101, Ecuador
- Correspondence: or
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Ghasemi R, Lotfali E, Rezaei K, Madinehzad SA, Tafti MF, Aliabadi N, Kouhsari E, Fattahi M. Meyerozyma guilliermondii species complex: review of current epidemiology, antifungal resistance, and mechanisms. Braz J Microbiol 2022; 53:1761-1779. [PMID: 36306113 PMCID: PMC9679122 DOI: 10.1007/s42770-022-00813-2] [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: 09/12/2021] [Accepted: 06/30/2022] [Indexed: 01/13/2023] Open
Abstract
Meyerozyma guilliermondii has been accepted as a complex composed of Meyerozyma guilliermondii, Meyerozyma carpophila, and Meyerozyma caribbica. M. guilliermondii is a saprophyte detected on human mucosa and skin. It can lead to serious infections in patients with risk factors like chemotherapy, immunodeficiency, gastrointestinal or cardiovascular surgery, and oncology disorders. Most deaths related to M. guilliermondii infections occur in individuals with malignancy. In recent decades, incidence of M. guilliermondii infections is increased. Sensitivity of this microorganism to conventional antifungals (e.g., amphotericin B, fluconazole, micafungin and anidulafungin) was reduced. Prophylactic and empirical uses of these drugs are linked to elevated minimal inhibitory concentrations (MICs) of M. guilliermondii. Drug resistance has concerned many researchers across the world. They are attempting to discover appropriate solution to combat this challenge. This study reviews the most important mechanisms of resistance to antifungals developed by in M. guilliermondii species complex.
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Affiliation(s)
- Reza Ghasemi
- Student Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ensieh Lotfali
- Department of Medical Parasitology and Mycology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Kamran Rezaei
- Student Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Seyed Ataollah Madinehzad
- Student Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mahdi Falah Tafti
- Student Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Nikta Aliabadi
- Microbiology Department Islamic, Azad University Tehran Branch, Tehran, Iran
| | - Ebrahim Kouhsari
- Department of Laboratory Sciences, Faculty of Paramedicine, Golestan University of Medical Sciences, Gorgan, Iran
- Laboratory Sciences Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Mahsa Fattahi
- Center for Research and Training in Skin Diseases and Leprosy, Tehran University of Medical Sciences, Tehran, Iran.
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8
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Vidal NF, Dávila JW. Lead and cadmium removal with native yeast from coastal wetlands. OPEN CHEM 2022. [DOI: 10.1515/chem-2022-0211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Abstract
Water bodies affected by heavy metals have been characterized in some natural ecosystems such as coastal wetlands in Peru. For this reason, in the present study, the determination of heavy metals lead (Pb), cadmium (Cd), and others was carried out in the water bodies of the Regional Conservation Area (RCA) Wetlands of Ventanilla using the Induction Coupled Plasma method. Water samples were collected at the six most critical stations for Pb and Cd, for the isolation of lead-tolerant microorganisms in 2022 with the aim of evaluating native microorganisms with removal potential of Pb and Cd. Yeasts such as Candida guilliermondii, Candida famata, Cryptococcus laurentii, Cryptococcus humicola, and Rhodotorula mucilaginosa with tolerance to high concentrations of Pb were isolated. The yeast with the best Pb tolerance result was Candida guilliermondii isolated from groundwater (piezometer sampling J1); Pb sorption was conducted with active yeast (living biomass), whereas both Pb and Cd sorption were conducted with inactive yeast (dead biomass). The results were compared with those of a reference standard yeast strain Saccharomyces cerevisiae: the native yeast proved to have optimum behavior for the process.
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Affiliation(s)
- Narda Fajardo Vidal
- Department of Bioprocesses, Faculty of Chemistry and Chemical Engineering, National University of San Marcos UNMSM , Calle Germán Amézaga 375 , 15081 Lima , Peru
| | - Jorge Wong Dávila
- Department of Chemical Engineering, Faculty of Chemical and Textile Engineering, National University of Engineering UNI , Av. Tupac Amaru 210 , 15333 Lima , Peru
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9
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Podgórska-Kryszczuk I, Solarska E, Kordowska-Wiater M. Reduction of the Fusarium Mycotoxins: Deoxynivalenol, Nivalenol and Zearalenone by Selected Non-Conventional Yeast Strains in Wheat Grains and Bread. Molecules 2022; 27:1578. [PMID: 35268678 PMCID: PMC8911760 DOI: 10.3390/molecules27051578] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/24/2022] [Accepted: 02/24/2022] [Indexed: 11/17/2022] Open
Abstract
Mycotoxins, toxic secondary metabolites produced by fungi, are important contaminants in food and agricultural industries around the world. These toxins have a multidirectional toxic effect on living organisms, causing damage to the kidneys and liver, and disrupting the functions of the digestive tract and the immune system. In recent years, much attention has been paid to the biological control of pathogens and the mycotoxins they produce. In this study, selected yeasts were used to reduce the occurrence of deoxynivalenol (DON), nivalenol (NIV), and zearalenone (ZEA) produced by Fusarium culmorum, F. graminearum, and F. poae on wheat grain and bread. In a laboratory experiment, an effective reduction in the content of DON, NIV, and ZEA was observed in bread prepared by baking with the addition of an inoculum of the test yeast, ranging from 16.4% to 33.4%, 18.5% to 36.2% and 14.3% to 35.4%, respectively. These results indicate that the selected yeast isolates can be used in practice as efficient mycotoxin decontamination agents in the food industry.
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Affiliation(s)
- Izabela Podgórska-Kryszczuk
- Department of Analysis and Food Quality Assessment, University of Life Sciences in Lublin, Skromna 8, 20-704 Lublin, Poland;
| | - Ewa Solarska
- Department of Biotechnology, Microbiology and Human Nutrition, University of Life Sciences in Lublin, Skromna 8, 20-704 Lublin, Poland;
| | - Monika Kordowska-Wiater
- Department of Biotechnology, Microbiology and Human Nutrition, University of Life Sciences in Lublin, Skromna 8, 20-704 Lublin, Poland;
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10
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Oh SH, Schliep K, Isenhower A, Rodriguez-Bobadilla R, Vuong VM, Fields CJ, Hernandez AG, Hoyer LL. Using Genomics to Shape the Definition of the Agglutinin-Like Sequence ( ALS) Family in the Saccharomycetales. Front Cell Infect Microbiol 2021; 11:794529. [PMID: 34970511 PMCID: PMC8712946 DOI: 10.3389/fcimb.2021.794529] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 11/09/2021] [Indexed: 01/09/2023] Open
Abstract
The Candida albicans agglutinin-like sequence (ALS) family is studied because of its contribution to cell adhesion, fungal colonization, and polymicrobial biofilm formation. The goal of this work was to derive an accurate census and sequence for ALS genes in pathogenic yeasts and other closely related species, while probing the boundaries of the ALS family within the Order Saccharomycetales. Bioinformatic methods were combined with laboratory experimentation to characterize 47 novel ALS loci from 8 fungal species. AlphaFold predictions suggested the presence of a conserved N-terminal adhesive domain (NT-Als) structure in all Als proteins reported to date, as well as in S. cerevisiae alpha-agglutinin (Sag1). Lodderomyces elongisporus, Meyerozyma guilliermondii, and Scheffersomyces stipitis were notable because each species had genes with C. albicans ALS features, as well as at least one that encoded a Sag1-like protein. Detection of recombination events between the ALS family and gene families encoding other cell-surface proteins such as Iff/Hyr and Flo suggest widespread domain swapping with the potential to create cell-surface diversity among yeast species. Results from the analysis also revealed subtelomeric ALS genes, ALS pseudogenes, and the potential for yeast species to secrete their own soluble adhesion inhibitors. Information presented here supports the inclusion of SAG1 in the ALS family and yields many experimental hypotheses to pursue to further reveal the nature of the ALS family.
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Affiliation(s)
- Soon-Hwan Oh
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Klaus Schliep
- Institute of Environmental Biotechnology, Graz University of Technology, Graz, Austria
| | - Allyson Isenhower
- Department of Biology, Millikin University, Decatur, IL, United States
| | | | - Vien M. Vuong
- Department of Computer Science, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Christopher J. Fields
- Roy J. Carver Biotechnology Center, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Alvaro G. Hernandez
- Roy J. Carver Biotechnology Center, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Lois L. Hoyer
- Department of Pathobiology, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, United States
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Willaert RG, Kayacan Y, Devreese B. The Flo Adhesin Family. Pathogens 2021; 10:pathogens10111397. [PMID: 34832553 PMCID: PMC8621652 DOI: 10.3390/pathogens10111397] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 10/11/2021] [Accepted: 10/25/2021] [Indexed: 12/14/2022] Open
Abstract
The first step in the infection of fungal pathogens in humans is the adhesion of the pathogen to host tissue cells or abiotic surfaces such as catheters and implants. One of the main players involved in this are the expressed cell wall adhesins. Here, we review the Flo adhesin family and their involvement in the adhesion of these yeasts during human infections. Firstly, we redefined the Flo adhesin family based on the domain architectures that are present in the Flo adhesins and their functions, and set up a new classification of Flo adhesins. Next, the structure, function, and adhesion mechanisms of the Flo adhesins whose structure has been solved are discussed in detail. Finally, we identified from Pfam database datamining yeasts that could express Flo adhesins and are encountered in human infections and their adhesin architectures. These yeasts are discussed in relation to their adhesion characteristics and involvement in infections.
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Affiliation(s)
- Ronnie G. Willaert
- Research Group Structural Biology Brussels (SBB), Vrije Universiteit Brussel (VUB), 1050 Brussels, Belgium;
- Alliance Research Group VUB-UGent NanoMicrobiology (NAMI), 1050 Brussels, Belgium;
- International Joint Research Group VUB-EPFL NanoBiotechnology & NanoMedicine (NANO), Vrije Universiteit Brussel (VUB), 1050 Brussels, Belgium
- Correspondence: ; Tel.: +32-2629-1846
| | - Yeseren Kayacan
- Research Group Structural Biology Brussels (SBB), Vrije Universiteit Brussel (VUB), 1050 Brussels, Belgium;
- Alliance Research Group VUB-UGent NanoMicrobiology (NAMI), 1050 Brussels, Belgium;
- International Joint Research Group VUB-EPFL NanoBiotechnology & NanoMedicine (NANO), Vrije Universiteit Brussel (VUB), 1050 Brussels, Belgium
- Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Bart Devreese
- Alliance Research Group VUB-UGent NanoMicrobiology (NAMI), 1050 Brussels, Belgium;
- International Joint Research Group VUB-EPFL NanoBiotechnology & NanoMedicine (NANO), Vrije Universiteit Brussel (VUB), 1050 Brussels, Belgium
- Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
- Laboratory for Microbiology, Gent University (UGent), 9000 Gent, Belgium
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12
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Palli L, Tilli S, Gregorio SD, Scozzafava A, Gori R. Treatment of NSAPs-rich petrochemical wastewaters using a two-stage combined process of fungi and activated sludge. ENVIRONMENTAL TECHNOLOGY 2021; 42:3783-3796. [PMID: 32249698 DOI: 10.1080/09593330.2020.1752814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 03/05/2020] [Indexed: 06/11/2023]
Abstract
A two-stage biological process using fungi and bacteria was set-up and tested for treating a petrochemical wastewater containing naphthalene sulphonic acid polymers. The fungal treatment was carried out through a trickling filter inoculated with Pleurotus ostreatus attached on Luffa cylindrica acting as both physical support and carbon source. The fungal reactor was operated in non-sterile conditions setting two pH values (5 and 6) and two hydraulic retention times (2 d and 3 d). The effluent was then sent to an activated sludge reactor operating the second stage of the treatment. Using an HPLC-based technique, it was observed that the fungal reactor was capable of reducing the polymerization grade of naphthalene sulphonic acid polymers up to 35%, thus increasing significantly the biodegradability of the petrochemical wastewater, from the initial 9% to 46%. The two-stage process allowed to remove about 50% of the total COD much higher than 9% that can be achieved with activated sludge alone. The use of Luffa cylindrica as support for fungi allowed to limit bacterial contamination of the trickling filter and enhanced enzymatic production (on average 20 U/L of Laccase) without any release of non-biodegradable by-products in the effluent. Extraction and PCR-amplification of fungal DNA was carried out along with over 70 d running process in order to monitor the changes of the fungal community inside the reactors. Results showed that Meyerozyma, Fusarium and Thricoderma, spp. developed inside the reactor with Thricoderma, spp. representing the main constituent of fungal biomass at the end of the experiment.
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Affiliation(s)
- Laura Palli
- Department of Civil and Environmental Engineering, University of Florence, Florence, Italy
| | - Silvia Tilli
- Department of Chemistry "Ugo Schiff", University of Florence, Florence, Italy
| | | | - Andrea Scozzafava
- Department of Chemistry "Ugo Schiff", University of Florence, Florence, Italy
| | - Riccardo Gori
- Department of Civil and Environmental Engineering, University of Florence, Florence, Italy
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13
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Selection of Potential Yeast Probiotics and a Cell Factory for Xylitol or Acid Production from Honeybee Samples. Metabolites 2021; 11:metabo11050312. [PMID: 34068237 PMCID: PMC8153147 DOI: 10.3390/metabo11050312] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 04/28/2021] [Accepted: 04/30/2021] [Indexed: 01/09/2023] Open
Abstract
Excessive use of antibiotics has detrimental consequences, including antibiotic resistance and gut microbiome destruction. Probiotic-rich diets help to restore good microbes, keeping the body healthy and preventing the onset of chronic diseases. Honey contains not only prebiotic oligosaccharides but, like yogurt and fermented foods, is an innovative natural source for probiotic discovery. Here, a collection of three honeybee samples was screened for yeast strains, aiming to characterize their potential in vitro probiotic properties and the ability to produce valuable metabolites. Ninety-four isolates out of one-hundred and four were able to grow at temperatures of 30 °C and 37 °C, while twelve isolates could grow at 42 °C. Fifty-eight and four isolates displayed the ability to grow under stimulated gastrointestinal condition, at pH 2.0-2.5, 0.3% (w/v) bile salt, and 37 °C. Twenty-four isolates showed high autoaggregation of 80-100% and could utilize various sugars, including galactose and xylose. The cell count of these isolates (7-9 log cfu/mL) was recorded and stable during 6 months of storage. Genomic characterization based on the internal transcribed spacer region (ITS) also identified four isolates of Saccharomyces cerevisiae displayed good ability to produce antimicrobial acids. These results provided the basis for selecting four natural yeast isolates as starter cultures for potential probiotic application in functional foods and animal feed. Additionally, these S. cerevisiae isolates also produced high levels of acids from fermented sugarcane molasses, an abundant agricultural waste product from the sugar industry. Furthermore, one of ten identified isolates of Meyerozyma guilliermondiii displayed an excellent ability to produce a pentose sugar xylitol at a yield of 0.490 g/g of consumed xylose. Potentially, yeast isolates of honeybee samples may offer various biotechnological advantages as probiotics or metabolite producers of multiproduct-based lignocellulosic biorefinery.
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14
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Ruchala J, Sibirny AA. Pentose metabolism and conversion to biofuels and high-value chemicals in yeasts. FEMS Microbiol Rev 2020; 45:6034013. [PMID: 33316044 DOI: 10.1093/femsre/fuaa069] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 12/09/2020] [Indexed: 12/15/2022] Open
Abstract
Pentose sugars are widespread in nature and two of them, D-xylose and L-arabinose belong to the most abundant sugars being the second and third by abundance sugars in dry plant biomass (lignocellulose) and in general on planet. Therefore, it is not surprising that metabolism and bioconversion of these pentoses attract much attention. Several different pathways of D-xylose and L-arabinose catabolism in bacteria and yeasts are known. There are even more common and really ubiquitous though not so abundant pentoses, D-ribose and 2-deoxy-D-ribose, the constituents of all living cells. Thus, ribose metabolism is example of endogenous metabolism whereas metabolism of other pentoses, including xylose and L-arabinose, represents examples of the metabolism of foreign exogenous compounds which normally are not constituents of yeast cells. As a rule, pentose degradation by the wild-type strains of microorganisms does not lead to accumulation of high amounts of valuable substances; however, productive strains have been obtained by random selection and metabolic engineering. There are numerous reviews on xylose and (less) L-arabinose metabolism and conversion to high value substances; however, they mostly are devoted to bacteria or the yeast Saccharomyces cerevisiae. This review is devoted to reviewing pentose metabolism and bioconversion mostly in non-conventional yeasts, which naturally metabolize xylose. Pentose metabolism in the recombinant strains of S. cerevisiae is also considered for comparison. The available data on ribose, xylose, L-arabinose transport, metabolism, regulation of these processes, interaction with glucose catabolism and construction of the productive strains of high-value chemicals or pentose (ribose) itself are described. In addition, genome studies of the natural xylose metabolizing yeasts and available tools for their molecular research are reviewed. Metabolism of other pentoses (2-deoxyribose, D-arabinose, lyxose) is briefly reviewed.
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Affiliation(s)
- Justyna Ruchala
- Department of Microbiology and Molecular Genetics, University of Rzeszow, Zelwerowicza 4, Rzeszow 35-601, Poland.,Department of Molecular Genetics and Biotechnology, Institute of Cell Biology NAS of Ukraine, Drahomanov Street, 14/16, Lviv 79005, Ukraine
| | - Andriy A Sibirny
- Department of Microbiology and Molecular Genetics, University of Rzeszow, Zelwerowicza 4, Rzeszow 35-601, Poland.,Department of Molecular Genetics and Biotechnology, Institute of Cell Biology NAS of Ukraine, Drahomanov Street, 14/16, Lviv 79005, Ukraine
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15
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Yan W, Gao H, Qian X, Jiang Y, Zhou J, Dong W, Xin F, Zhang W, Jiang M. Biotechnological applications of the non-conventional yeast Meyerozyma guilliermondii. Biotechnol Adv 2020; 46:107674. [PMID: 33276074 DOI: 10.1016/j.biotechadv.2020.107674] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 10/31/2020] [Accepted: 11/25/2020] [Indexed: 12/11/2022]
Abstract
Unconventional yeasts have attracted increased attentions owning to their unique biochemical properties and potential application in the biotechnological process. With the rapid development of microbial isolation tools and synthetic biology, more promising industrial yeasts have been isolated and characterized. Meyerozyma guilliermondii (anamorph Candida guilliermondii) is an ascomycetous yeast with several unique characteristics and physiology, such as the wide substrates spectrum and capability of various chemicals synthesis. The potential physiological and metabolic capabilities of M. guilliermondii, which can utilize various carbon sources including typical hydrophilic and hydrophobic materials were first reviewed in this review. Moreover, the wide applications of M. guilliermondii, such as for industrial enzymes production, metabolites synthesis and biocontrol were also reviewed. With the development of system and synthetic biology, M. guilliermondii will provide new opportunities for potential applications in biotechnology sectors in the future.
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Affiliation(s)
- Wei Yan
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, PR China
| | - Hao Gao
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, PR China; Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, PR China
| | - Xiujuan Qian
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, PR China
| | - Yujia Jiang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, PR China
| | - Jie Zhou
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, PR China; Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, PR China
| | - Weiliang Dong
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, PR China; Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, PR China
| | - Fengxue Xin
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, PR China; Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, PR China.
| | - Wenming Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, PR China; Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, PR China
| | - Min Jiang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, PR China; Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, PR China.
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16
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Yan W, Zhang X, Qian X, Zhou J, Dong W, Ma J, Zhang W, Xin F, Jiang M. Comprehensive investigations of 2-phenylethanol production by high 2-phenylethanol tolerating Meyerozyma sp. strain YLG18. Enzyme Microb Technol 2020; 140:109629. [DOI: 10.1016/j.enzmictec.2020.109629] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 06/15/2020] [Accepted: 07/01/2020] [Indexed: 10/23/2022]
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17
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Valsalan R, Mathew D. Draft genome of Meyerozyma guilliermondii strain vka1: a yeast strain with composting potential. J Genet Eng Biotechnol 2020; 18:54. [PMID: 32996036 PMCID: PMC7524887 DOI: 10.1186/s43141-020-00074-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 09/17/2020] [Indexed: 11/30/2022]
Abstract
Background Meyerozyma guilliermondii is a yeast which could be isolated from a variety of environments. The vka1 strain isolated and purified from the organic compost was found to have composting potential. To better understand the genes assisting the composting potential in this yeast, whole genome sequencing and sequence annotation were performed. Results The genome of M. guilliermondii vka1 strain was sequenced using a hybrid approach, on Illumina Hiseq-2500 platform at 100× coverage followed by Nanopore platform at 20× coverage. The de novo assembly using dual-fold approach had given draft genome of 10.8 Mb size. The genome was found to contain 5385 genes. The annotation of the genes was performed, and the enzymes identified to have roles in the degradation of macromolecules are discussed in relation to its composting potential. Annotation of the genome assembly of the related strains had revealed the unique biodegradation related genes in this strain. Phylogenetic analysis using the rDNA region has confirmed the position of this strain in the Ascomycota family. Raw reads are made public, and the genome wide proteome profile is presented to facilitate further studies on this organism. Conclusions Meyerozyma guilliermondii vka1 strain was sequenced through hybrid approach and the reads were de novo assembled. Draft genome size and the number of genes in the strain were assessed and discussed in relation to the related strains. Scientific insights into the composting potential of this strain are also presented in relation to the unique genes identified in this strain.
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Affiliation(s)
- Ravisankar Valsalan
- Bioinformatics Centre, Kerala Agricultural University, KAU Post, Thrissur, Kerala State, 680 656, India
| | - Deepu Mathew
- Bioinformatics Centre, Kerala Agricultural University, KAU Post, Thrissur, Kerala State, 680 656, India.
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18
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Patterns of Lignocellulosic Sugar Assimilation and Lipid Production by Newly Isolated Yeast Strains From Chilean Valdivian Forest. Appl Biochem Biotechnol 2020; 192:1124-1146. [PMID: 32700200 DOI: 10.1007/s12010-020-03398-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 07/16/2020] [Indexed: 12/19/2022]
Abstract
Three yeast strains were isolated from decaying wood of Chilean Valdivian forest and identified as Meyerozyma guilliermondii, Scheffersomyces coipomensis, and Sugiyamaella paludigena. These strains were able to efficiently grow on the major monomers contained in Pinus spp. and Eucalyptus spp. wood that includes glucose (Glc), xylose (Xyl), and mannose (Man), showing at 28 °C higher uptake rates for Man, and in some cases for Glc, than for Xyl, used as single carbon sources. Nevertheless, in cultures performed on sugar mixtures, the strains displayed a notable preference for Glc. Additionally, in sugar mixtures, the absence of regulatory mechanisms in sugar assimilation (e.g., catabolic repression) was observed and documented when the activities of several enzymes involved in sugar assimilation (i.e., phosphoglucose isomerase, phosphomannose isomerase, and xylulokinase) were determined. The activity of the key enzymes involved in the onset of lipid accumulation (i.e., NAD+-ICDH) and in fatty acid (FA) biosynthesis (i.e., ATP:CL) indicated a significant accumulation of storage lipids (i.e., up to 24%, w/w) containing oleic and palmitic acids as the major components. The present paper is the first report on the potential of M. guilliermondii, S. coipomensis, and S. paludigena as oleaginous yeasts. We conclude that the new isolates, being able to simultaneously assimilate the major lignocellulosic sugars and efficiently convert them into oily biomass, present a biotechnological potential which deserve further investigation.
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Valorization of apple pomace using bio-based technology for the production of xylitol and 2G ethanol. Bioprocess Biosyst Eng 2020; 43:2153-2163. [PMID: 32627063 DOI: 10.1007/s00449-020-02401-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Accepted: 06/27/2020] [Indexed: 10/23/2022]
Abstract
Apple pomace was studied as a raw material for the production of xylitol and 2G ethanol, since this agroindustrial residue has a high concentration of carbohydrate macromolecules, but is still poorly studied for the production of fermentation bioproducts, such as polyols. The dry biomass was subjected to dilute-acid hydrolysis with H2SO4 to obtain the hemicellulosic hydrolysate, which was concentrated, detoxified and fermented. The hydrolyzate after characterization was submitted to submerged fermentations, which were carried out in Erlenmeyer flasks using, separately, the yeasts Candida guilliermondii and Kluyveromyces marxianus. High cellulose (32.62%) and hemicellulose (23.60%) contents were found in this biomass, and the chemical hydrolysis yielded appreciable quantities of fermentable sugars, especially xylose. Both yeasts were able to metabolize xylose, but Candida guilliermondii produced only xylitol (9.35 g L-1 in 96 h), while K. marxianus produced ethanol as the main product (10.47 g L-1 in 24 h) and xylitol as byproduct (9.10 g L-1 xylitol in 96 h). Maximum activities of xylose reductase and xylitol dehydrogenase were verified after 24 h of fermentation with C. guilliermondii (0.23 and 0.53 U/mgprot, respectively) and with K. marxianus (0.08 e 0.08 U/mgprot, respectively). Apple pomace has shown potential as a raw material for the fermentation process, and the development of a biotechnological platform for the integrated use of both the hemicellulosic and cellulosic fraction could add value to this residue and the apple production chain.
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20
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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: 121] [Impact Index Per Article: 24.2] [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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21
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de Andrade Silva CA, Oka ML, Fonseca GG. Physiology of yeast strains isolated from Brazilian biomes in a minimal medium using fructose as the sole carbon source reveals potential biotechnological applications. 3 Biotech 2019; 9:191. [PMID: 31065491 DOI: 10.1007/s13205-019-1721-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Accepted: 04/17/2019] [Indexed: 01/06/2023] Open
Abstract
The aim of this study was to evaluate the kinetic parameters and the production of metabolites of 13 novel yeasts isolated from a distillery and fruits, and Saccharomyces cerevisiae CAT-1, cultivated in fructose-based medium. The yeasts with the highest µ max were obtained from must, Pichia kudriavzevii BB2, P. kudriavzevii BB1, and S. cerevisiae BB9 (0.47-0.49 h-1). S. cerevisiae CAT-1 (3.02 g gDCM-1 h-1), S. cerevisiae BB9 (3.01 g gDCM-1 h-1), and Candida glabrata Recol 41 (2.52 g gDCM-1 h-1) stood out in terms of µ S. C. parapsilosis Recol 29, and Rhodotorula mucilaginosa Recol 03 strains showed the highest Y X/S (0.30 and 0.28 gDCM g-1, respectively). C. glabrata Recol 10 and S. cerevisiae BB9 strains stood out for their higher substrate conversion rates into ethanol (0.44 and 0.41 gEth gS-1, respectively). R. mucilaginosa Recol 03 presented the poorest performance in substrate consumption (0.87 g gDCM-1 h-1), while the strains isolated from must and C. glabrata Recol 10 showed the highest ethanol production and the C. parapsilosis Recol 29 showed the highest biomass conversion.
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Zajc J, Gostinčar C, Černoša A, Gunde-Cimerman N. Stress-Tolerant Yeasts: Opportunistic Pathogenicity Versus Biocontrol Potential. Genes (Basel) 2019; 10:genes10010042. [PMID: 30646593 PMCID: PMC6357073 DOI: 10.3390/genes10010042] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 01/03/2019] [Accepted: 01/09/2019] [Indexed: 01/26/2023] Open
Abstract
Stress-tolerant fungi that can thrive under various environmental extremes are highly desirable for their application to biological control, as an alternative to chemicals for pest management. However, in fungi, the mechanisms of stress tolerance might also have roles in mammal opportunism. We tested five species with high biocontrol potential in agriculture (Aureobasidium pullulans, Debayomyces hansenii, Meyerozyma guilliermondii, Metschnikowia fructicola, Rhodotorula mucilaginosa) and two species recognized as emerging opportunistic human pathogens (Exophiala dermatitidis, Aureobasidium melanogenum) for growth under oligotrophic conditions and at 37 °C, and for tolerance to oxidative stress, formation of biofilms, production of hydrolytic enzymes and siderophores, and use of hydrocarbons as sole carbon source. The results show large overlap between traits desirable for biocontrol and traits linked to opportunism (growth under oligotrophic conditions, production of siderophores, high oxidative stress tolerance, and specific enzyme activities). Based on existing knowledge and these data, we suggest that oligotrophism and thermotolerance together with siderophore production at 37 °C, urease activity, melanization, and biofilm production are the main traits that increase the potential for fungi to cause opportunistic infections in mammals. These traits should be carefully considered when assessing safety of potential biocontrol agents.
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Affiliation(s)
- Janja Zajc
- Department of Biotechnology and Systems Biology, National Institute of Biology, Večna pot 111, SI-1000 Ljubljana, Slovenia.
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia.
| | - Cene Gostinčar
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia.
- Institut 'Jožef Stefan', Jamova cesta 39, SI-1000 Ljubljana, Slovenia.
| | - Anja Černoša
- Department of Biotechnology and Systems Biology, National Institute of Biology, Večna pot 111, SI-1000 Ljubljana, Slovenia.
| | - Nina Gunde-Cimerman
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia.
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Viigand K, Põšnograjeva K, Visnapuu T, Alamäe T. Genome Mining of Non-Conventional Yeasts: Search and Analysis of MAL Clusters and Proteins. Genes (Basel) 2018; 9:E354. [PMID: 30013016 PMCID: PMC6070925 DOI: 10.3390/genes9070354] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 07/09/2018] [Accepted: 07/12/2018] [Indexed: 12/13/2022] Open
Abstract
Genomic clustering of functionally related genes is rare in yeasts and other eukaryotes with only few examples available. Here, we summarize our data on a nontelomeric MAL cluster of a non-conventional methylotrophic yeast Ogataea (Hansenula) polymorpha containing genes for α-glucosidase MAL1, α-glucoside permease MAL2 and two hypothetical transcriptional activators. Using genome mining, we detected MAL clusters of varied number, position and composition in many other maltose-assimilating non-conventional yeasts from different phylogenetic groups. The highest number of MAL clusters was detected in Lipomyces starkeyi while no MAL clusters were found in Schizosaccharomyces pombe and Blastobotrys adeninivorans. Phylograms of α-glucosidases and α-glucoside transporters of yeasts agreed with phylogenesis of the respective yeast species. Substrate specificity of unstudied α-glucosidases was predicted from protein sequence analysis. Specific activities of Scheffersomycesstipitis α-glucosidases MAL7, MAL8, and MAL9 heterologously expressed in Escherichia coli confirmed the correctness of the prediction-these proteins were verified promiscuous maltase-isomaltases. α-Glucosidases of earlier diverged yeasts L. starkeyi, B. adeninivorans and S. pombe showed sequence relatedness with α-glucosidases of filamentous fungi and bacilli.
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Affiliation(s)
- Katrin Viigand
- Department of Genetics, Institute of Molecular and Cell Biology, University of Tartu, Riia 23, 51010 Tartu, Estonia.
| | - Kristina Põšnograjeva
- Department of Genetics, Institute of Molecular and Cell Biology, University of Tartu, Riia 23, 51010 Tartu, Estonia.
| | - Triinu Visnapuu
- Department of Genetics, Institute of Molecular and Cell Biology, University of Tartu, Riia 23, 51010 Tartu, Estonia.
| | - Tiina Alamäe
- Department of Genetics, Institute of Molecular and Cell Biology, University of Tartu, Riia 23, 51010 Tartu, Estonia.
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24
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Defosse TA, Le Govic Y, Courdavault V, Clastre M, Vandeputte P, Chabasse D, Bouchara JP, Giglioli-Guivarc'h N, Papon N. [Yeasts from the CTG clade (Candida clade): Biology, impact in human health, and biotechnological applications]. J Mycol Med 2018; 28:257-268. [PMID: 29545121 DOI: 10.1016/j.mycmed.2018.02.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 02/05/2018] [Accepted: 02/12/2018] [Indexed: 11/29/2022]
Abstract
Among the subdivision of Saccharomycotina (ascomycetes budding yeasts), the CTG clade (formerly the Candida clade) includes species that display a particular genetic code. In these yeasts, the CTG codon is predominantly translated as a serine instead of a leucine residue. It is now well-known that some CTG clade species have a major impact on human and its activities. Some of them are recognized as opportunistic agents of fungal infections termed candidiasis. In addition, another series of species belonging to the CTG clade draws the attention of some research groups because they exhibit a strong potential in various areas of biotechnology such as biological control, bioremediation, but also in the production of valuable biocompounds (biofuel, vitamins, sweeteners, industrial enzymes). Here we provide an overview of recent advances concerning the biology, clinical relevance, and currently tested biotechnological applications of species of the CTG clade. Future directions for scientific research on these particular yeasts are also discussed.
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Affiliation(s)
- T A Defosse
- Groupe d'étude des interactions Hôte-Pathogène (EA 3142), SFR interactions cellulaires et applications thérapeutiques, université d'Angers, 49933 Angers, France; EA 2106, université de Tours, biomolécules et biotechnologies végétales, Tours, France
| | - Y Le Govic
- Groupe d'étude des interactions Hôte-Pathogène (EA 3142), SFR interactions cellulaires et applications thérapeutiques, université d'Angers, 49933 Angers, France; Laboratoire de parasitologie - mycologie, centre hospitalier universitaire d'Angers, Angers, France
| | - V Courdavault
- EA 2106, université de Tours, biomolécules et biotechnologies végétales, Tours, France
| | - M Clastre
- EA 2106, université de Tours, biomolécules et biotechnologies végétales, Tours, France
| | - P Vandeputte
- Groupe d'étude des interactions Hôte-Pathogène (EA 3142), SFR interactions cellulaires et applications thérapeutiques, université d'Angers, 49933 Angers, France; Laboratoire de parasitologie - mycologie, centre hospitalier universitaire d'Angers, Angers, France
| | - D Chabasse
- Groupe d'étude des interactions Hôte-Pathogène (EA 3142), SFR interactions cellulaires et applications thérapeutiques, université d'Angers, 49933 Angers, France; Laboratoire de parasitologie - mycologie, centre hospitalier universitaire d'Angers, Angers, France
| | - J-P Bouchara
- Groupe d'étude des interactions Hôte-Pathogène (EA 3142), SFR interactions cellulaires et applications thérapeutiques, université d'Angers, 49933 Angers, France; Laboratoire de parasitologie - mycologie, centre hospitalier universitaire d'Angers, Angers, France
| | - N Giglioli-Guivarc'h
- EA 2106, université de Tours, biomolécules et biotechnologies végétales, Tours, France
| | - N Papon
- Groupe d'étude des interactions Hôte-Pathogène (EA 3142), SFR interactions cellulaires et applications thérapeutiques, université d'Angers, 49933 Angers, France.
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25
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The Genomes of Four Meyerozyma caribbica Isolates and Novel Insights into the Meyerozyma guilliermondii Species Complex. G3-GENES GENOMES GENETICS 2018; 8:755-759. [PMID: 29311113 PMCID: PMC5844296 DOI: 10.1534/g3.117.300316] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Yeasts of the Meyerozyma guilliermondii species complex are widespread in nature and can be isolated from a variety of sources, from the environment to arthropods to hospital patients. To date, the species complex comprises the thoroughly studied and versatile M. guilliermondii, the hard to distinguish M. caribbica, and Candida carpophila. Here we report the whole genome sequencing and de novo assembly of four M. caribbica isolates, identified with the most recent molecular techniques, derived from four Diptera species. The four novel assemblies present reduced fragmentation and comparable metrics (genome size, gene content) to the available genomes belonging to the species complex. We performed a phylogenomic analysis comprising all known members of the species complex, to investigate evolutionary relationships within this clade. Our results show a compact phylogenetic structure for the complex and indicate the presence of a sizable core set of genes. Furthermore, M. caribbica, despite a broad literature on the difficulties of discerning it from M. guilliermondii, seems to be more closely related to C. carpophila. Finally, we believe that there is evidence for considering these four genomes to be the first published for the species M. caribbica. Raw reads and assembled contigs have been made public to further the study of these organisms.
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26
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Martin E, Varotto Boccazzi I, De Marco L, Bongiorno G, Montagna M, Sacchi L, Mensah P, Ricci I, Gradoni L, Bandi C, Epis S. The mycobiota of the sand fly Phlebotomus perniciosus: Involvement of yeast symbionts in uric acid metabolism. Environ Microbiol 2018; 20:1064-1077. [PMID: 29345102 DOI: 10.1111/1462-2920.14044] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 12/22/2017] [Accepted: 01/08/2018] [Indexed: 01/02/2023]
Abstract
The knowledge of the fungal mycobiota of arthropods, including the vectors of human and animal diseases, is still limited. Here, the mycobiota associated with the sand fly Phlebotomus perniciosus, the main vector of leishmaniasis in the western Mediterranean area, by a culture-dependent approach (microbiological analyses and sequencing of the 26S rRNA gene), internal transcribed spacer (ITS) rRNA amplicon-based next-generation sequencing, fluorescence in situ hybridisation (FISH), and genome sequencing of the dominant yeast species was investigated. The dominant species was Meyerozyma guilliermondii, known for its biotechnological applications. The focus was on this yeast and its prevalence in adults, pupae and larvae of reared sand flies (overall prevalence: 57.5%) and of field-collected individuals (overall prevalence: 9%) was investigated. Using whole-mount FISH and microscopic examination, it was further showed that M. guilliermondii colonizes the midgut of females, males and larvae and the distal part of Malpighian tubules of female sand flies, suggesting a possible role in urate degradation. Finally, the sequencing and analysis of the genome of M. guilliermondii allowed predicting the complete uric acid degradation pathway, suggesting that the yeast could contribute to the removal of the excess of nitrogenous wastes after the blood meal of the insect host.
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Affiliation(s)
- Elena Martin
- Department of Biosciences, University of Milan, Milan, Italy
| | | | - Leone De Marco
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - Gioia Bongiorno
- Unit of Vector-Borne Diseases, Istituto Superiore di Sanità, Rome, Italy
| | - Matteo Montagna
- Department of Agricultural and Environmental Sciences- Production, Landscape, Agroenergy, University of Milan, Milan, Italy
| | - Luciano Sacchi
- Department of Biology and Biotechnology, University of Pavia, Pavia, Italy
| | - Priscilla Mensah
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - Irene Ricci
- School of Biosciences and Veterinary Medicine, University of Camerino, Camerino, Italy
| | - Luigi Gradoni
- Unit of Vector-Borne Diseases, Istituto Superiore di Sanità, Rome, Italy
| | - Claudio Bandi
- Department of Biosciences, University of Milan, Milan, Italy.,Pediatric Clinical Research Center Romeo and Enrica Invernizzi, Ospedale 'Luigi Sacco', Milan, Italy
| | - Sara Epis
- Department of Biosciences, University of Milan, Milan, Italy.,Pediatric Clinical Research Center Romeo and Enrica Invernizzi, Ospedale 'Luigi Sacco', Milan, Italy
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27
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Perna MDSC, Bastos RG, Ceccato-Antonini SR. Single and combined effects of acetic acid, furfural, and sugars on the growth of the pentose-fermenting yeast Meyerozyma guilliermondii. 3 Biotech 2018; 8:119. [PMID: 29430380 PMCID: PMC5803134 DOI: 10.1007/s13205-018-1143-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 01/30/2018] [Indexed: 01/25/2023] Open
Abstract
The tolerance of the pentose-fermenting yeast Meyerozyma guilliermondii to the inhibitors released after the biomass hydrolysis, such as acetic acid and furfural, was surveyed. We first verified the effects of acetic acid and cell concentrations and initial pH on the growth of a M. guilliermondii strain in a semi-synthetic medium containing acetic acid as the sole carbon source. Second, the single and combined effects of furfural, acetic acid, and sugars (xylose, arabinose, and glucose) on the sugar uptake, cell growth, and ethanol production were also analysed. Growth inhibition occurred in concentrations higher than 10.5 g l-1 acetic acid and initial pH 3.5. The maximum specific growth rate (µ) was 0.023 h-1 and the saturation constant (ks) was 0.75 g l-1 acetic acid. Initial cell concentration also influenced µ. Acetic acid (initial concentration 5 g l-1) was co-consumed with sugars even in the presence of 20 mg l-1 furfural without inhibition to the yeast growth. The yeast grew and fermented sugars in a sugar-based medium with acetic acid and furfural in concentrations much higher than those usually found in hemicellulosic hydrolysates.
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Affiliation(s)
- Michelle dos Santos Cordeiro Perna
- Laboratory of Molecular and Agricultural Microbiology, Dept Tecnologia Agroindustrial e Sócio-Economia Rural, Centro de Ciências Agrárias, Universidade Federal de São Carlos, P.O. Box 153, Araras, São Paulo State 13600-970 Brazil
| | - Reinaldo Gaspar Bastos
- Laboratory of Molecular and Agricultural Microbiology, Dept Tecnologia Agroindustrial e Sócio-Economia Rural, Centro de Ciências Agrárias, Universidade Federal de São Carlos, P.O. Box 153, Araras, São Paulo State 13600-970 Brazil
| | - Sandra Regina Ceccato-Antonini
- Laboratory of Molecular and Agricultural Microbiology, Dept Tecnologia Agroindustrial e Sócio-Economia Rural, Centro de Ciências Agrárias, Universidade Federal de São Carlos, P.O. Box 153, Araras, São Paulo State 13600-970 Brazil
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28
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Broissin-Vargas L, Snell-Castro R, Godon J, González-Ríos O, Suárez-Quiroz M. Impact of storage conditions on fungal community composition of green coffee beansCoffea arabicaL. stored in jute sacks during 1 year. J Appl Microbiol 2018; 124:547-558. [DOI: 10.1111/jam.13656] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 11/22/2017] [Accepted: 11/29/2017] [Indexed: 11/26/2022]
Affiliation(s)
- L.M. Broissin-Vargas
- Tecnológico Nacional de México; Instituto Tecnológico de Veracruz; Unidad de Investigación y Desarrollo en Alimentos; Veracruz México
| | - R. Snell-Castro
- Departamento de Ingeniería Química; Universidad de Guadalajara-CUCEI; Guadalajara Jalisco México
| | | | - O. González-Ríos
- Tecnológico Nacional de México; Instituto Tecnológico de Veracruz; Unidad de Investigación y Desarrollo en Alimentos; Veracruz México
| | - M.L. Suárez-Quiroz
- Tecnológico Nacional de México; Instituto Tecnológico de Veracruz; Unidad de Investigación y Desarrollo en Alimentos; Veracruz México
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29
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Bozic J, Capone A, Pediconi D, Mensah P, Cappelli A, Valzano M, Mancini MV, Scuppa P, Martin E, Epis S, Rossi P, Favia G, Ricci I. Mosquitoes can harbour yeasts of clinical significance and contribute to their environmental dissemination. ENVIRONMENTAL MICROBIOLOGY REPORTS 2017; 9:642-648. [PMID: 28714286 DOI: 10.1111/1758-2229.12569] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 07/07/2017] [Accepted: 07/10/2017] [Indexed: 06/07/2023]
Abstract
There is still a lack of studies on fungal microbiota in mosquitoes, compared with the number available on bacterial microbiota. This study reports the identification of yeasts of clinical significance in laboratory mosquito species: Anopheles gambiae, Anopheles stephensi, Culex quinquefasciatus, Aedes albopictus and Aedes aegypti. Among the yeasts isolated, they focused on the opportunistic pathogen Candida parapsilosis, since there is a need to better understand breakthrough candidaemia with resistance to the usual antifungals, which requires careful consideration in the broad-spectrum therapy, as documented in many clinical reports. C. parapsilosis occurs widely and has been isolated from diverse sources, including insects, which may contribute to its dissemination. In this study, it was isolated from the gut of An. gambiae and its presence in developmental stages and organs of different mosquito species was studied. Our results indicated that there was a stable association between C. parapsilosis and reared mosquitoes during the entire life cycle, and in adult male and female gut and gonads. A wide occurrence of C. parapsilosis was also documented in several populations of wild mosquitoes. Based on these findings, it can be said that mosquitoes might participate in the spreading of this opportunistic pathogen, not only as a carrier.
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Affiliation(s)
- Jovana Bozic
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile da Varano III 62032, Camerino, Italy
| | - Aida Capone
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile da Varano III 62032, Camerino, Italy
| | - Dario Pediconi
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile da Varano III 62032, Camerino, Italy
| | - Priscilla Mensah
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile da Varano III 62032, Camerino, Italy
| | - Alessia Cappelli
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile da Varano III 62032, Camerino, Italy
| | - Matteo Valzano
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile da Varano III 62032, Camerino, Italy
| | - Maria Vittoria Mancini
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile da Varano III 62032, Camerino, Italy
| | - Patrizia Scuppa
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile da Varano III 62032, Camerino, Italy
| | - Elena Martin
- Department of Veterinary Sciences and Public Health, University of Milan, Milan, 20133, Italy
| | - Sara Epis
- Department of Veterinary Sciences and Public Health, University of Milan, Milan, 20133, Italy
| | - Paolo Rossi
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile da Varano III 62032, Camerino, Italy
| | - Guido Favia
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile da Varano III 62032, Camerino, Italy
| | - Irene Ricci
- School of Biosciences and Veterinary Medicine, University of Camerino, Via Gentile da Varano III 62032, Camerino, Italy
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30
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Navarro-Arias MJ, Dementhon K, Defosse TA, Foureau E, Courdavault V, Clastre M, Le Gal S, Nevez G, Le Govic Y, Bouchara JP, Giglioli-Guivarc'h N, Noël T, Mora-Montes HM, Papon N. Group X hybrid histidine kinase Chk1 is dispensable for stress adaptation, host–pathogen interactions and virulence in the opportunistic yeast Candida guilliermondii. Res Microbiol 2017; 168:644-654. [DOI: 10.1016/j.resmic.2017.04.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Revised: 03/03/2017] [Accepted: 04/26/2017] [Indexed: 10/19/2022]
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31
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Utashima Y, Yamashita S, Arima TH, Masaki K. Codon optimization enables the Zeocin resistance marker's use in the ascomycete yeast Debaryomyces occidentalis. J GEN APPL MICROBIOL 2017; 63:254-257. [PMID: 28747584 DOI: 10.2323/jgam.2016.11.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Yuu Utashima
- Tsuruga Institute of Biotechnology, Toyobo Co., Ltd
| | - Satoshi Yamashita
- Faculty of Life and Environmental Science, Prefectural University of Hiroshima
| | - Toshi-Hide Arima
- Faculty of Life and Environmental Science, Prefectural University of Hiroshima
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32
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Cheng JW, Liao K, Kudinha T, Yu SY, Xiao M, Wang H, Kong F, Xu YC. Molecular epidemiology and azole resistance mechanism study of Candida guilliermondii from a Chinese surveillance system. Sci Rep 2017; 7:907. [PMID: 28424474 PMCID: PMC5430413 DOI: 10.1038/s41598-017-01106-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Accepted: 03/16/2017] [Indexed: 11/09/2022] Open
Abstract
We studied the molecular epidemiology and mechanism of azole resistance of 164 C. guilliermondii isolates from a nationwide multi-center surveillance program. The isolates were identified by ITS gene sequencing, and the in vitro susceptibility to fluconazole and voriconazole was determined by broth microdilution method. The 14-α-demethylase gene ERG11 was amplified and sequenced, and microsatellite analysis was performed to study the genetic relatedness of the isolates. Amongst the 164 C. guilliermondii isolates, 15 (9.1%) and 17 (10.4%) isolates were assigned to be non-wild type (non-WT) to fluconazole and voriconazole, respectively. Sixteen sequence types (STs) were detected by comparing the amino acid sequence polymorphisms of the ERG11 gene. Fifteen isolates of STs 9, 10, 12, 13, 14, 15 and 16, were all assigned to be non-WT to fluconazole and voriconazole. By microsatellite analysis, 40 different genotypes were identified. Thirty-seven isolates from one hospital (Z1) shared the same ERG11 sequence type (ST 2), microsatellite genotype (PU40) and drug resistance pattern. In conclusion, this is the first molecular epidemiology study of C. guilliermondii in China. The rate of non-WT isolates to azoles was high and the accurate contribution of ERG11 gene mutations to azole resistance need be confirmed by further studies.
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Affiliation(s)
- Jing-Wei Cheng
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, 100730, China.,Graduate School, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, China.,Beijing Key Laboratory for Mechanisms Research and Precision Diagnosis of Invasive Fungal Diseases, Beijing, 100730, China
| | - Kang Liao
- Department of Laboratory Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, 510080, China
| | - Timothy Kudinha
- The Charles Sturt University, Leeds Parade, Orange, New South Wales, 2687, Australia.,Centre for Infectious Diseases and Microbiology Laboratory Services, Westmead Hospital, Westmead, New South Wales, 2145, Australia
| | - Shu-Ying Yu
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, 100730, China.,Graduate School, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, China.,Beijing Key Laboratory for Mechanisms Research and Precision Diagnosis of Invasive Fungal Diseases, Beijing, 100730, China
| | - Meng Xiao
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, 100730, China.,Graduate School, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, China.,Beijing Key Laboratory for Mechanisms Research and Precision Diagnosis of Invasive Fungal Diseases, Beijing, 100730, China
| | - He Wang
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, 100730, China.,Graduate School, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, China.,Beijing Key Laboratory for Mechanisms Research and Precision Diagnosis of Invasive Fungal Diseases, Beijing, 100730, China
| | - Fanrong Kong
- The Charles Sturt University, Leeds Parade, Orange, New South Wales, 2687, Australia
| | - Ying-Chun Xu
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, 100730, China. .,Graduate School, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, 100730, China. .,Beijing Key Laboratory for Mechanisms Research and Precision Diagnosis of Invasive Fungal Diseases, Beijing, 100730, China.
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33
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Bretagne S, Renaudat C, Desnos-Ollivier M, Sitbon K, Lortholary O, Dromer F. Predisposing factors and outcome of uncommon yeast species-related fungaemia based on an exhaustive surveillance programme (2002–14). J Antimicrob Chemother 2017; 72:1784-1793. [DOI: 10.1093/jac/dkx045] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 01/24/2017] [Indexed: 01/05/2023] Open
Affiliation(s)
- Stéphane Bretagne
- Institut Pasteur, CNRS, Molecular Mycology Unit, French National Reference Center for Invasive Mycoses & Antifungals, URA3012, Paris, France
- Parasitology-Mycology Laboratory, Saint Louis hospital, Assistance Publique-Hôpitaux de Paris (APHP), Paris, France
| | - Charlotte Renaudat
- Institut Pasteur, CNRS, Molecular Mycology Unit, French National Reference Center for Invasive Mycoses & Antifungals, URA3012, Paris, France
| | - Marie Desnos-Ollivier
- Institut Pasteur, CNRS, Molecular Mycology Unit, French National Reference Center for Invasive Mycoses & Antifungals, URA3012, Paris, France
| | - Karine Sitbon
- Institut Pasteur, CNRS, Molecular Mycology Unit, French National Reference Center for Invasive Mycoses & Antifungals, URA3012, Paris, France
| | - Olivier Lortholary
- Institut Pasteur, CNRS, Molecular Mycology Unit, French National Reference Center for Invasive Mycoses & Antifungals, URA3012, Paris, France
- Paris Descartes University, Necker Pasteur Center for Infectious Diseases and Tropical Medicine, Necker Enfants Malades Hospital, Paris, France
| | - Françoise Dromer
- Institut Pasteur, CNRS, Molecular Mycology Unit, French National Reference Center for Invasive Mycoses & Antifungals, URA3012, Paris, France
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34
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Chen Y, Peng HM, Wang X, Li BQ, Long MY, Tian SP. Biodegradation Mechanisms of Patulin in Candida guilliermondii: An iTRAQ-Based Proteomic Analysis. Toxins (Basel) 2017; 9:E48. [PMID: 28208714 PMCID: PMC5331428 DOI: 10.3390/toxins9020048] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2016] [Revised: 01/15/2017] [Accepted: 01/20/2017] [Indexed: 01/26/2023] Open
Abstract
Patulin, a potent mycotoxin, contaminates fruits and derived products worldwide, and is a serious health concern. Several yeast strains have shown the ability to effectively degrade patulin. However, the mechanisms of its biodegradation still remain unclear at this time. In the present study, biodegradation and involved mechanisms of patulin by an antagonistic yeast Candida guilliermondii were investigated. The results indicated that C. guilliermondii was capable of not only multiplying to a high population in medium containing patulin, but also effectively reducing patulin content in culture medium. Degradation of patulin by C. guilliermondii was dependent on the yeast cell viability, and mainly occurred inside cells. E-ascladiol was the main degradation product of patulin. An iTRAQ-based proteomic analysis revealed that the responses of C. guilliermondii to patulin were complex. A total of 30 differential proteins involved in 10 biological processes were identified, and more than two-thirds of the differential proteins were down-accumulated. Notably, a short-chain dehydrogenase (gi|190348612) was markedly induced by patulin at both the protein and mRNA levels. Our findings will provide a foundation to help enable the commercial development of an enzyme formulation for the detoxification of patulin in fruit-derived products.
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Affiliation(s)
- Yong Chen
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Huai-Min Peng
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Xiao Wang
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Bo-Qiang Li
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China.
| | - Man-Yuan Long
- Department of Ecology and Evolution, The University of Chicago, Chicago, IL 60637, USA.
| | - Shi-Ping Tian
- Key Laboratory of Plant Resources, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
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Hilber-Bodmer M, Schmid M, Ahrens CH, Freimoser FM. Competition assays and physiological experiments of soil and phyllosphere yeasts identify Candida subhashii as a novel antagonist of filamentous fungi. BMC Microbiol 2017; 17:4. [PMID: 28056814 PMCID: PMC5216558 DOI: 10.1186/s12866-016-0908-z] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 12/06/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND While recent advances in next generation sequencing technologies have enabled researchers to readily identify countless microbial species in soil, rhizosphere, and phyllosphere microbiomes, the biological functions of the majority of these species are unknown. Functional studies are therefore urgently needed in order to characterize the plethora of microorganisms that are being identified and to point out species that may be used for biotechnology or plant protection. Here, we used a dual culture assay and growth analyses to characterise yeasts (40 different isolates) and their antagonistic effect on 16 filamentous fungi; comprising plant pathogens, antagonists, and saprophytes. RESULTS Overall, this competition screen of 640 pairwise combinations revealed a broad range of outcomes, ranging from small stimulatory effects of some yeasts up to a growth inhibition of more than 80% by individual species. On average, yeasts isolated from soil suppressed filamentous fungi more strongly than phyllosphere yeasts and the antagonistic activity was a species-/isolate-specific property and not dependent on the filamentous fungus a yeast was interacting with. The isolates with the strongest antagonistic activity were Metschnikowia pulcherrima, Hanseniaspora sp., Cyberlindnera sargentensis, Aureobasidium pullulans, Candida subhashii, and Pichia kluyveri. Among these, the soil yeasts (C. sargentensis, A. pullulans, C. subhashii) assimilated and/or oxidized more di-, tri- and tetrasaccharides and organic acids than yeasts from the phyllosphere. Only the two yeasts C. subhashii and M. pulcherrima were able to grow with N-acetyl-glucosamine as carbon source. CONCLUSIONS The competition assays and physiological experiments described here identified known antagonists that have been implicated in the biological control of plant pathogenic fungi in the past, but also little characterised species such as C. subhashii. Overall, soil yeasts were more antagonistic and metabolically versatile than yeasts from the phyllosphere. Noteworthy was the strong antagonistic activity of the soil yeast C. subhashii, which had so far only been described from a clinical sample and not been studied with respect to biocontrol. Based on binary competition assays and growth analyses (e.g., on different carbon sources, growth in root exudates), C. subhashii was identified as a competitive and antagonistic soil yeast with potential as a novel biocontrol agent against plant pathogenic fungi.
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Affiliation(s)
- Maja Hilber-Bodmer
- Agroscope, Institute for Plant Production Sciences IPS, Schloss 1, P.B., 8820, Wädenswil, Switzerland
| | - Michael Schmid
- Agroscope, Institute for Plant Production Sciences IPS, Schloss 1, P.B., 8820, Wädenswil, Switzerland.,SIB, Swiss Institute of Bioinformatics, Wädenswil, Switzerland
| | - Christian H Ahrens
- Agroscope, Institute for Plant Production Sciences IPS, Schloss 1, P.B., 8820, Wädenswil, Switzerland.,SIB, Swiss Institute of Bioinformatics, Wädenswil, Switzerland
| | - Florian M Freimoser
- Agroscope, Institute for Plant Production Sciences IPS, Schloss 1, P.B., 8820, Wädenswil, Switzerland.
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Navarro-Arias MJ, Defosse TA, Dementhon K, Csonka K, Mellado-Mojica E, Dias Valério A, González-Hernández RJ, Courdavault V, Clastre M, Hernández NV, Pérez-García LA, Singh DK, Vizler C, Gácser A, Almeida RS, Noël T, López MG, Papon N, Mora-Montes HM. Disruption of Protein Mannosylation Affects Candida guilliermondii Cell Wall, Immune Sensing, and Virulence. Front Microbiol 2016; 7:1951. [PMID: 27994582 PMCID: PMC5133257 DOI: 10.3389/fmicb.2016.01951] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Accepted: 11/21/2016] [Indexed: 11/13/2022] Open
Abstract
The fungal cell wall contains glycoproteins that interact with the host immune system. In the prominent pathogenic yeast Candida albicans, Pmr1 acts as a Golgi-resident ion pump that provides cofactors to mannosyltransferases, regulating the synthesis of mannans attached to glycoproteins. To gain insight into a putative conservation of such a crucial process within opportunistic yeasts, we were particularly interested in studying the role of the PMR1 homolog in a low-virulent species that rarely causes candidiasis, Candida guilliermondii. We disrupted C. guilliermondii PMR1 and found that loss of Pmr1 affected cell growth and morphology, biofilm formation, susceptibility to cell wall perturbing agents, mannan levels, and the wall composition and organization. Despite the significant increment in the amount of β1,3-glucan exposed at the wall surface, this positively influenced only the ability of the mutant to stimulate IL-10 production by human monocytes, suggesting that recognition of both mannan and β1,3-glucan, is required to stimulate strong levels of pro-inflammatory cytokines. Accordingly, our results indicate C. guilliermondii sensing by monocytes was critically dependent on the recognition of N-linked mannans and β1,3-glucan, as reported in other Candida species. In addition, chemical remotion of cell wall O-linked mannans was found to positively influence the recognition of C. guilliermondii by human monocytes, suggesting that O-linked mannans mask other cell wall components from immune cells. This observation contrasts with that reported in C. albicans. Finally, mice infected with C. guilliermondii pmr1Δ null mutant cells had significantly lower fungal burdens compared to animals challenged with the parental strain. Accordingly, the null mutant showed inability to kill larvae in the Galleria mellonella infection model. This study thus demonstrates that mannans are relevant for the C. guilliermondii-host interaction, with an atypical role for O-linked mannans.
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Affiliation(s)
- María J Navarro-Arias
- División de Ciencias Naturales y Exactas, Departamento de Biología, Universidad de Guanajuato Guanajuato, Mexico
| | - Tatiana A Defosse
- Biomolécules et Biotechnologies Végétales, Université François-Rabelais de ToursTours, France; Groupe d'Etude des Interactions Hôte-Pathogène, Université d'AngersAngers, France
| | - Karine Dementhon
- Laboratoire de Microbiologie Fondamentale et Pathogénicité, Université Bordeaux 2, UMR-Centre National de la Recherche Scientifique 5234 Bordeaux, France
| | - Katalin Csonka
- Department of Microbiology, University of Szeged Szeged, Hungary
| | - Erika Mellado-Mojica
- Centro de Investigaciones y de Estudios Avanzados del Instituto Politécnico Nacional (IPN) Guanajuato, Mexico
| | - Aline Dias Valério
- Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina Londrina, Brazil
| | - Roberto J González-Hernández
- División de Ciencias Naturales y Exactas, Departamento de Biología, Universidad de Guanajuato Guanajuato, Mexico
| | - Vincent Courdavault
- Biomolécules et Biotechnologies Végétales, Université François-Rabelais de Tours Tours, France
| | - Marc Clastre
- Biomolécules et Biotechnologies Végétales, Université François-Rabelais de Tours Tours, France
| | - Nahúm V Hernández
- División de Ciencias Naturales y Exactas, Departamento de Biología, Universidad de Guanajuato Guanajuato, Mexico
| | - Luis A Pérez-García
- División de Ciencias Naturales y Exactas, Departamento de Biología, Universidad de Guanajuato Guanajuato, Mexico
| | | | - Csaba Vizler
- Institute of Biochemistry, Biological Research Center of the Hungarian Academy of Sciences Szeged, Hungary
| | - Attila Gácser
- Department of Microbiology, University of Szeged Szeged, Hungary
| | - Ricardo S Almeida
- Departamento de Microbiologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina Londrina, Brazil
| | - Thierry Noël
- Laboratoire de Microbiologie Fondamentale et Pathogénicité, Université Bordeaux 2, UMR-Centre National de la Recherche Scientifique 5234 Bordeaux, France
| | - Mercedes G López
- Centro de Investigaciones y de Estudios Avanzados del Instituto Politécnico Nacional (IPN) Guanajuato, Mexico
| | - Nicolas Papon
- Groupe d'Etude des Interactions Hôte-Pathogène, Université d'Angers Angers, France
| | - Héctor M Mora-Montes
- División de Ciencias Naturales y Exactas, Departamento de Biología, Universidad de Guanajuato Guanajuato, Mexico
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Wrent P, Rivas EM, Peinado JM, de Silóniz MI. Development of an affordable typing method for Meyerozyma guilliermondii using microsatellite markers. Int J Food Microbiol 2015; 217:1-6. [PMID: 26476570 DOI: 10.1016/j.ijfoodmicro.2015.10.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 09/16/2015] [Accepted: 10/06/2015] [Indexed: 11/25/2022]
Abstract
Despite previously published methods, there is still a lack of rapid and affordable methods for genotyping the Meyerozyma guilliermondii yeast species. The development of microsatellite markers is a useful genotyping method in several yeast species. Using the Tandem Repeat Finder Software, a total of 19 microsatellite motifs (di-, tri-, and tetra- repetition) were found in silico in seven of the nine scaffolds published so far. Primer pairs were designed for all of them, although only four were used in this work. All microsatellite amplifications showed size polymorphism, and the results were identical when repeated. The combination of three microsatellite markers (sc15F/R, sc32 F/R and sc72 F/R) produced a different pattern for each of the Type Culture Collection strains of M. guilliermondii used to optimize the method. The three primer pairs can be used in the same PCR reaction, which reduces costs, in tandem with the fluorescent labeling of only the forward primer in each primer pair. Microsatellite typing was applied on 40 more M. guilliermondii strains. The results showed that no pattern is repeated between the different environmental niches. Four M. guilliermondii strains were only amplified with primer pair sc32 F/R, and subsequently identified as Meyerozyma caribbica by Taq I-RFLP of the 5.8S ITS rDNA. Most out-group species gave negative results even for physiologically similarly species such as Debaryomyces hansenii. The microsatellite markers used in this work were stable over time, which enables their use as a traceability tool.
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Affiliation(s)
- Petra Wrent
- Departamento de Microbiología III, Facultad de Biología, Universidad Complutense de Madrid, C/ José Antonio Nováis, 12, 28040 Madrid, Spain; CEI Campus Moncloa, UCM-UPM, Madrid, Spain
| | - Eva-María Rivas
- Departamento de Microbiología III, Facultad de Biología, Universidad Complutense de Madrid, C/ José Antonio Nováis, 12, 28040 Madrid, Spain; CEI Campus Moncloa, UCM-UPM, Madrid, Spain
| | - José M Peinado
- Departamento de Microbiología III, Facultad de Biología, Universidad Complutense de Madrid, C/ José Antonio Nováis, 12, 28040 Madrid, Spain; CEI Campus Moncloa, UCM-UPM, Madrid, Spain
| | - María-Isabel de Silóniz
- Departamento de Microbiología III, Facultad de Biología, Universidad Complutense de Madrid, C/ José Antonio Nováis, 12, 28040 Madrid, Spain; CEI Campus Moncloa, UCM-UPM, Madrid, Spain.
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Functional diversity of complex I subunits in Candida albicans mitochondria. Curr Genet 2015; 62:87-95. [PMID: 26373419 DOI: 10.1007/s00294-015-0518-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 08/26/2015] [Accepted: 08/28/2015] [Indexed: 10/23/2022]
Abstract
Our interest in the mitochondria of Candida albicans has progressed to the identification of several proteins that are critical to complex I (CI) activity. We speculated that there should be major functional differences at the protein level between mammalian and fungal mitochondria CI. In our pursuit of this idea, we were helped by published data of CI subunit proteins from a broad diversity of species that included two subunit proteins that are not found in mammals. These subunit proteins have been designated as Nuo1p and Nuo2p (NADH-ubiquinone oxidoreductases). Since functional assignments of both C. albicans proteins were unknown, other than having a putative NADH-oxidoreductase activity, we constructed knock-out strains that could be compared to parental cells. The relevance of our research relates to the critical roles of both proteins in cell biology and pathogenesis and their absence in mammals. These features suggest they may be exploited in antifungal drug discovery. Initially, we characterized Goa1p that apparently regulates CI activity but is not a CI subunit protein. We have used the goa1∆ for comparisons to Nuo1p and Nuo2p. We have demonstrated the critical role of these proteins in maintaining CI activities, virulence, and prolonging life span. More recently, transcriptional profiling of the three mutants and an ndh51∆ (protein is a highly conserved CI subunit) has revealed that there are overlapping yet also different functional assignments that suggest subunit specificity. The differences and similarities of each are described below along with our hypotheses to explain these data. Our conclusion and perspective is that the C. albicans CI subunit proteins are highly conserved except for two that define non-mammalian functions.
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Schmid J, Magee PT, Holland BR, Zhang N, Cannon RD, Magee BB. Last hope for the doomed? Thoughts on the importance of a parasexual cycle for the yeast Candida albicans. Curr Genet 2015; 62:81-5. [DOI: 10.1007/s00294-015-0516-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 08/21/2015] [Accepted: 08/22/2015] [Indexed: 12/16/2022]
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Sperandio EM, Martins do Vale HM, Moreira GAM. Yeasts from native Brazilian Cerrado plants: Occurrence, diversity and use in the biocontrol of citrus green mould. Fungal Biol 2015; 119:984-993. [PMID: 26466874 DOI: 10.1016/j.funbio.2015.06.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 06/11/2015] [Accepted: 06/30/2015] [Indexed: 11/28/2022]
Abstract
Yeasts are some of the most important postharvest biocontrol agents. Postharvest oranges frequently deteriorate due to green mould (Penicillium digitatum), which causes significant losses. The aims of this study were to determine the composition and diversity of yeasts on plants of the Brazilian Cerrado and to explore their potential for inhibiting citrus green mould. Leaves and fruit of Byrsonima crassifolia and Eugenia dysenterica were collected from Cerrado conservation areas, and thirty-five yeasts were isolated and identified by sequencing the D1-D2 domain of the rDNA large subunit (26S). The isolates represented the Aureobasidium, Meyerozyma, Candida, and Pichia genera. Three isolates identified as Aureobasidium pullulans exhibited potential for the control of P. digitatum in both in vitro and in vivo tests; these isolates reduced the incidence of disease and increased the storage time of fruit. Aureobasidium. pullulans has immense potential for the biological control of filamentous fungi.
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Affiliation(s)
- Eugenio Miranda Sperandio
- Departamento de Fitopatologia, Instituto de Ciências Biológicas, Universidade de Brasília, Brasília, Distrito Federal, 70910-900, Brazil.
| | - Helson Mario Martins do Vale
- Departamento de Fitopatologia, Instituto de Ciências Biológicas, Universidade de Brasília, Brasília, Distrito Federal, 70910-900, Brazil.
| | - Geisianny Augusta Monteiro Moreira
- Departamento de Fitopatologia, Instituto de Ciências Biológicas, Universidade de Brasília, Brasília, Distrito Federal, 70910-900, Brazil.
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Wang C, Bao X, Li Y, Jiao C, Hou J, Zhang Q, Zhang W, Liu W, Shen Y. Cloning and characterization of heterologous transporters in Saccharomyces cerevisiae and identification of important amino acids for xylose utilization. Metab Eng 2015; 30:79-88. [DOI: 10.1016/j.ymben.2015.04.007] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 03/25/2015] [Accepted: 04/24/2015] [Indexed: 12/31/2022]
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Mazari W, Boucherit-Otmani Z, Boucherit K. In vitro susceptibility of amphotericin-B, voriconazole and caspofungin against Candida guilliermondii biofilms, isolated from dentals units water pipes, under different growth phases. J Mycol Med 2015; 25:57-62. [DOI: 10.1016/j.mycmed.2014.10.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Revised: 10/01/2014] [Accepted: 10/30/2014] [Indexed: 11/29/2022]
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43
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Lahlali R, Hamadi Y, Drider R, Misson C, El Guilli M, Jijakli MH. Control of citrus blue mold by the antagonist yeast Pichia guilliermondii Z1: Compatibility with commercial fruit waxes and putative mechanisms of action. Food Control 2014. [DOI: 10.1016/j.foodcont.2014.04.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Abstract
Candida species are the most common causes of fungal infection. Approximately 90% of infections are caused by five species: Candida albicans, Candida glabrata, Candida tropicalis, Candida parapsilosis, and Candida krusei. Three (C. albicans, C. tropicalis, and C. parapsilosis) belong to the CTG clade, in which the CTG codon is translated as serine and not leucine. C. albicans remains the most commonly isolated but is decreasing relative to the other species. The increasing incidence of C. glabrata is related to its reduced susceptibility to azole drugs. Genome analysis suggests that virulence in the CTG clade is associated with expansion of gene families, particularly of cell wall genes. Similar independent processes took place in the C. glabrata species group. Gene loss and expansion in an ancestor of C. glabrata may have resulted in preadaptations that enabled pathogenicity.
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Affiliation(s)
- Siobhán A Turner
- School of Biomolecular and Biomedical Science, Conway Institute, University College Dublin, Belfield, Dublin 4, Ireland
| | - Geraldine Butler
- School of Biomolecular and Biomedical Science, Conway Institute, University College Dublin, Belfield, Dublin 4, Ireland
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Defosse TA, Melin C, Obando Montoya EJ, Lanoue A, Foureau E, Glévarec G, Oudin A, Simkin AJ, Crèche J, Atehortùa L, Giglioli-Guivarc’h N, Clastre M, Courdavault V, Papon N. A new series of vectors for constitutive, inducible or repressible gene expression in Candida guilliermondii. J Biotechnol 2014; 180:37-42. [DOI: 10.1016/j.jbiotec.2014.03.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 03/21/2014] [Accepted: 03/26/2014] [Indexed: 12/11/2022]
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Obando Montoya EJ, Mélin C, Blanc N, Lanoue A, Foureau E, Boudesocque L, Prie G, Simkin AJ, Crèche J, Atehortùa L, Giglioli-Guivarc'h N, Clastre M, Courdavault V, Papon N. Disrupting the methionine biosynthetic pathway in Candida guilliermondii: characterization of the MET2 gene as counter-selectable marker. Yeast 2014; 31:243-51. [PMID: 24700391 DOI: 10.1002/yea.3012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 03/25/2014] [Accepted: 03/27/2014] [Indexed: 12/20/2022] Open
Abstract
Candida guilliermondii (teleomorph Meyerozyma guilliermondii) is an ascomycetous species belonging to the fungal CTG clade. This yeast remains actively studied as a result of its moderate clinical importance and most of all for its potential uses in biotechnology. The aim of the present study was to establish a convenient transformation system for C. guilliermondii by developing both a methionine auxotroph recipient strain and a functional MET gene as selection marker. We first disrupted the MET2 and MET15 genes encoding homoserine-O-acetyltransferase and O-acetylserine O-acetylhomoserine sulphydrylase, respectively. The met2 mutant was shown to be a methionine auxotroph in contrast to met15 which was not. Interestingly, met2 and met15 mutants formed brown colonies when cultured on lead-containing medium, contrary to the wild-type strain, which develop as white colonies on this medium. The MET2 wild-type allele was successfully used to transfer a yellow fluorescent protein (YFP) gene-expressing vector into the met2 recipient strain. In addition, we showed that the loss of the MET2-containing YFP-expressing plasmid can be easily observed on lead-containing medium. The MET2 wild-type allele, flanked by two short repeated sequences, was then used to disrupt the LYS2 gene (encoding the α-aminoadipate reductase) in the C. guilliermondii met2 recipient strain. The resulting lys2 mutants displayed, as expected, auxotrophy for lysine. Unfortunately, all our attempts to pop-out the MET2 marker (following the recombination of the bordering repeat sequences) from a target lys2 locus were unsuccessful using white/brown colony colour screening. Nevertheless, this MET2 transformation/disruption system represents a new versatile genetic tool for C. guilliermondii.
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Affiliation(s)
- Erika J Obando Montoya
- Université François-Rabelais de Tours, EA2106, Biomolécules et Biotechnologies Végétales, Tours, France; Universidad de Antioquia, Laboratorio de Biotecnología, Sede de Investigación Universitaria, Colombia
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Triggering respirofermentative metabolism in the crabtree-negative yeast Pichia guilliermondii by disrupting the CAT8 gene. Appl Environ Microbiol 2014; 80:3879-87. [PMID: 24747899 DOI: 10.1128/aem.00854-14] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Pichia guilliermondii is a Crabtree-negative yeast that does not normally exhibit respirofermentative metabolism under aerobic conditions, and methods to trigger this metabolism may have applications for physiological study and industrial applications. In the present study, CAT8, which encodes a putative global transcriptional activator, was disrupted in P. guilliermondii. This yeast's ethanol titer increased by >20-fold compared to the wild type (WT) during aerobic fermentation using glucose. A comparative transcriptional analysis indicated that the expression of genes in the tricarboxylic acid cycle and respiratory chain was repressed in the CAT8-disrupted (ΔCAT8) strain, while the fermentative pathway genes were significantly upregulated. The respiratory activities in the ΔCAT8 strain, indicated by the specific oxygen uptake rate and respiratory state value, decreased to one-half and one-third of the WT values, respectively. In addition, the expression of HAP4, a transcriptional respiratory activator, was significantly repressed in the ΔCAT8 strain. Through disruption of HAP4, the ethanol production of P. guilliermondii was also increased, but the yield and titer were lower than that in the ΔCAT8 strain. A further transcriptional comparison between ΔCAT8 and ΔHAP4 strains suggested a more comprehensive reprogramming function of Cat8 in the central metabolic pathways. These results indicated the important role of CAT8 in regulating the glucose metabolism of P. guilliermondii and that the regulation was partially mediated by repressing HAP4. The strategy proposed here might be applicable to improve the aerobic fermentation capacity of other Crabtree-negative yeasts.
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Foureau E, Clastre M, Obando Montoya EJ, Besseau S, Oudin A, Glévarec G, Simkin AJ, Crèche J, Atehortùa L, Giglioli-Guivarc’h N, Courdavault V, Papon N. Subcellular localization of the histidine kinase receptors Sln1p, Nik1p and Chk1p in the yeast CTG clade species Candida guilliermondii. Fungal Genet Biol 2014; 65:25-36. [DOI: 10.1016/j.fgb.2014.01.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Revised: 01/23/2014] [Accepted: 01/25/2014] [Indexed: 12/29/2022]
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Romi W, Keisam S, Ahmed G, Jeyaram K. Reliable differentiation of Meyerozyma guilliermondii from Meyerozyma caribbica by internal transcribed spacer restriction fingerprinting. BMC Microbiol 2014; 14:52. [PMID: 24575831 PMCID: PMC3946169 DOI: 10.1186/1471-2180-14-52] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Accepted: 02/24/2014] [Indexed: 11/10/2022] Open
Abstract
Background Meyerozyma guilliermondii (anamorph Candida guilliermondii) and Meyerozyma caribbica (anamorph Candida fermentati) are closely related species of the genetically heterogenous M. guilliermondii complex. Conventional phenotypic methods frequently misidentify the species within this complex and also with other species of the Saccharomycotina CTG clade. Even the long-established sequencing of large subunit (LSU) rRNA gene remains ambiguous. We also faced similar problem during identification of yeast isolates of M. guilliermondii complex from indigenous bamboo shoot fermentation in North East India. There is a need for development of reliable and accurate identification methods for these closely related species because of their increasing importance as emerging infectious yeasts and associated biotechnological attributes. Results We targeted the highly variable internal transcribed spacer (ITS) region (ITS1-5.8S-ITS2) and identified seven restriction enzymes through in silico analysis for differentiating M. guilliermondii from M. caribbica. Fifty five isolates of M. guilliermondii complex which could not be delineated into species-specific taxonomic ranks by API 20 C AUX and LSU rRNA gene D1/D2 sequencing were subjected to ITS-restriction fragment length polymorphism (ITS-RFLP) analysis. TaqI ITS-RFLP distinctly differentiated the isolates into M. guilliermondii (47 isolates) and M. caribbica (08 isolates) with reproducible species-specific patterns similar to the in silico prediction. The reliability of this method was validated by ITS1-5.8S-ITS2 sequencing, mitochondrial DNA RFLP and electrophoretic karyotyping. Conclusions We herein described a reliable ITS-RFLP method for distinct differentiation of frequently misidentified M. guilliermondii from M. caribbica. Even though in silico analysis differentiated other closely related species of M. guilliermondii complex from the above two species, it is yet to be confirmed by in vitro analysis using reference strains. This method can be used as a reliable tool for rapid and accurate identification of closely related species of M. guilliermondii complex and for differentiating emerging infectious yeasts of the Saccharomycotina CTG clade.
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Affiliation(s)
| | | | | | - Kumaraswamy Jeyaram
- Microbial Resources Division, Institute of Bioresources and Sustainable Development (IBSD), Takyelpat Institutional Area, Imphal 795001, Manipur, India.
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Foureau E, Courdavault V, Navarro Gallón SM, Besseau S, Simkin AJ, Crèche J, Atehortùa L, Giglioli-Guivarc’h N, Clastre M, Papon N. Characterization of an autonomously replicating sequence in Candida guilliermondii. Microbiol Res 2013; 168:580-8. [DOI: 10.1016/j.micres.2013.04.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Revised: 04/04/2013] [Accepted: 04/11/2013] [Indexed: 10/26/2022]
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