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Jakopović Ž, Valinger D, Hanousek Čiča K, Mrvčić J, Domijan AM, Čanak I, Kostelac D, Frece J, Markov K. A Predictive Assessment of Ochratoxin A's Effects on Oxidative Stress Parameters and the Fermentation Ability of Yeasts Using Neural Networks. Foods 2024; 13:408. [PMID: 38338543 PMCID: PMC10855555 DOI: 10.3390/foods13030408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/22/2024] [Accepted: 01/23/2024] [Indexed: 02/12/2024] Open
Abstract
The aim of this paper was to examine the effect of different OTA concentrations on the parameters of oxidative stress (glutathione (GSH) and malondialdehyde (MDA) concentrations) and glucose utilization in ethanol production by wine yeasts. In addition to the above, artificial neural networks (ANN) were used to predict the effects of different OTA concentrations on the fermentation ability of yeasts and oxidative stress parameters. The obtained results indicate a negative influence of OTA (4 µg mL-1) on ethanol production after 12 h. For example, K. marxianus produced 1.320 mg mL-1 of ethanol, while in the control sample 1.603 µg mL-1 of ethanol was detected. However, after 24 h, OTA had no negative effect on ethanol production, since it was higher (7.490 and 3.845 mg mL-1) in comparison to control samples. Even low concentrations of OTA affect GSH concentrations, with the highest being detected after 12 and 24 h (up to 16.54 µM), while MDA concentrations are affected by higher OTA concentrations, with the highest being detected at 24 h (1.19 µM). The obtained results with the use of ANNs showed their potential for quantification purposes based on experimental data, while the results of ANN prediction models have shown to be useful for predictions of what outcomes different concentrations of OTA that were not part of experiment will have on the fermentation capacity and oxidative stress parameters of yeasts.
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Affiliation(s)
- Željko Jakopović
- Laboratory for General Microbiology and Food Microbiology, Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia; (Ž.J.); (I.Č.); (D.K.); (K.M.)
| | - Davor Valinger
- Laboratory for Measurement, Control and Automatisation, Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia;
| | - Karla Hanousek Čiča
- Laboratory for Fermentation and Yeast Technology, Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia; (K.H.Č.); (J.M.)
| | - Jasna Mrvčić
- Laboratory for Fermentation and Yeast Technology, Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia; (K.H.Č.); (J.M.)
| | - Ana-Marija Domijan
- Department of Pharmaceutical Botany, Faculty of Pharmacy and Biochemistry, University of Zagreb, Schrottova 39, 10000 Zagreb, Croatia;
| | - Iva Čanak
- Laboratory for General Microbiology and Food Microbiology, Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia; (Ž.J.); (I.Č.); (D.K.); (K.M.)
| | - Deni Kostelac
- Laboratory for General Microbiology and Food Microbiology, Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia; (Ž.J.); (I.Č.); (D.K.); (K.M.)
| | - Jadranka Frece
- Laboratory for General Microbiology and Food Microbiology, Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia; (Ž.J.); (I.Č.); (D.K.); (K.M.)
| | - Ksenija Markov
- Laboratory for General Microbiology and Food Microbiology, Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia; (Ž.J.); (I.Č.); (D.K.); (K.M.)
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Ruiz J, de Celis M, Diaz‐Colunga J, Vila JCC, Benitez‐Dominguez B, Vicente J, Santos A, Sanchez A, Belda I. Predictability of the community-function landscape in wine yeast ecosystems. Mol Syst Biol 2023; 19:e11613. [PMID: 37548146 PMCID: PMC10495813 DOI: 10.15252/msb.202311613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 07/26/2023] [Accepted: 07/26/2023] [Indexed: 08/08/2023] Open
Abstract
Predictively linking taxonomic composition and quantitative ecosystem functions is a major aspiration in microbial ecology, which must be resolved if we wish to engineer microbial consortia. Here, we have addressed this open question for an ecological function of major biotechnological relevance: alcoholic fermentation in wine yeast communities. By exhaustively phenotyping an extensive collection of naturally occurring wine yeast strains, we find that most ecologically and industrially relevant traits exhibit phylogenetic signal, allowing functional traits in wine yeast communities to be predicted from taxonomy. Furthermore, we demonstrate that the quantitative contributions of individual wine yeast strains to the function of complex communities followed simple quantitative rules. These regularities can be integrated to quantitatively predict the function of newly assembled consortia. Besides addressing theoretical questions in functional ecology, our results and methodologies can provide a blueprint for rationally managing microbial processes of biotechnological relevance.
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Affiliation(s)
- Javier Ruiz
- Department of Genetics, Physiology and Microbiology, Biology FacultyComplutense University of MadridMadridSpain
- Department of Microbial and Plant BiotechnologyCentre for Biological Research (CIB‐CSIC)MadridSpain
| | - Miguel de Celis
- Department of Genetics, Physiology and Microbiology, Biology FacultyComplutense University of MadridMadridSpain
- Department of Soil, Plant and Environmental QualityInstitute of Agricultural Sciences (ICA‐CSIC)MadridSpain
| | - Juan Diaz‐Colunga
- Department of Ecology & Evolutionary BiologyYale UniversityNew HavenCTUSA
- Department of Microbial BiotechnologyNational Centre for Biotechnology (CNB‐CSIC)MadridSpain
| | - Jean CC Vila
- Department of Ecology & Evolutionary BiologyYale UniversityNew HavenCTUSA
- Department of BiologyStanford UniversityStanfordCAUSA
| | - Belen Benitez‐Dominguez
- Department of Genetics, Physiology and Microbiology, Biology FacultyComplutense University of MadridMadridSpain
| | - Javier Vicente
- Department of Genetics, Physiology and Microbiology, Biology FacultyComplutense University of MadridMadridSpain
| | - Antonio Santos
- Department of Genetics, Physiology and Microbiology, Biology FacultyComplutense University of MadridMadridSpain
| | - Alvaro Sanchez
- Department of Ecology & Evolutionary BiologyYale UniversityNew HavenCTUSA
- Department of Microbial BiotechnologyNational Centre for Biotechnology (CNB‐CSIC)MadridSpain
| | - Ignacio Belda
- Department of Genetics, Physiology and Microbiology, Biology FacultyComplutense University of MadridMadridSpain
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Canonico L, Agarbati A, Galli E, Comitini F, Ciani M. Biocontrol Using Torulaspora delbrueckii in Sequential Fermentation: New Insights into Low-Sulfite Verdicchio Wines. Foods 2023; 12:2899. [PMID: 37569169 PMCID: PMC10417703 DOI: 10.3390/foods12152899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/28/2023] [Accepted: 07/28/2023] [Indexed: 08/13/2023] Open
Abstract
Torulaspora delbrueckii has attracted renewed interest in recent years, for its biotechnological potential linked to its ability to enhance the flavor and aroma complexity of wine. Sequential fermentations with a selected native strain of T. delbrueckii (DiSVA 130) and low-sulfite native strain of Saccharomyces cerevisiae (DiSVA 709) were carried out to establish their contribution in biocontrol and the aroma profile. A first set of trials were conducted to evaluate the effect of the sulfur dioxide addition on pure and T. debrueckii/S. cerevisiae sequential fermentations. A second set of sequential fermentations without SO2 addition were conducted to evaluate the biocontrol and aromatic effectiveness of T. delbrueckii. Native T. delbrueckii showed a biocontrol action in the first two days of fermentation (wild yeasts reduced by c.a. 1 log at the second day). Finally, trials with the combination of both native and commercial T. delbrueckii/S. cerevisiae led to distinctive aromatic profiles of wines, with a significant enhancement in isoamyl acetate, phenyl ethyl acetate, supported by positive appreciations from the tasters, for ripe and tropical fruits, citrus, and balance. The whole results indicate that native T. delbrueckii could be a potential biocontrol tool against wild yeasts in the first phase of fermentation, contributing to improving the final wine aroma.
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Affiliation(s)
| | | | | | | | - Maurizio Ciani
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona, Italy; (L.C.); (A.A.); (E.G.); (F.C.)
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Seixas I, Santos D, Vasconcelos I, Mira NP, Mendes-Ferreira A. Insights into the transcriptional regulation of poorly characterized alcohol acetyltransferase-encoding genes (HgAATs) shed light into the production of acetate esters in the wine yeast Hanseniaspora guilliermondii. FEMS Yeast Res 2023; 23:7086110. [PMID: 36965869 PMCID: PMC10070066 DOI: 10.1093/femsyr/foad021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 02/28/2023] [Accepted: 03/24/2023] [Indexed: 03/27/2023] Open
Abstract
Hanseniaspora guilliermondii is a well-recognized producer of acetate esters associated with fruity and floral aromas. The molecular mechanisms underneath this production or the environmental factors modulating it remain unknown. Herein, we found that, unlike Saccharomyces cerevisiae H. guilliermondii over-produces acetate esters and higher alcohols at low carbon-to-assimilable nitrogen (C:N) ratios, with the highest titers being obtained in the amino acid-enriched medium YPD. The evidences gathered support a model in which the strict preference of H. guilliermondii for amino acids as nitrogen sources results in a channeling of keto-acids obtained after transamination to higher alcohols and acetate esters. This higher production was accompanied by higher expression of the four HgAATs, genes, recently proposed to encode alcohol acetyl transferases. In silico analyses of these HgAat's reveal that they harbor conserved AATs motifs, albeit radical substitutions were identified that might result in different kinetic properties. Close homologues of HgAat2, HgAat3 and HgAat4 were only found in members of Hanseniaspora genus and phylogenetic reconstruction shows that these constitute a distinct family of Aat's. These results advance the exploration of H. guilliermondii as a bio-flavoring agent providing important insights to guide future strategies for strain engineering and media manipulation that can enhance production of aromatic volatiles.
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Affiliation(s)
- Isabel Seixas
- WM&B-Laboratory of Wine Microbiology & Biotechnology, Department of Biology and Environment, University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal
- BioISI-Biosystems and Integrative Sciences Institute, Faculdade de Ciências, Universidade de Lisboa Campo Grande, Lisbon, Portugal
| | - Diogo Santos
- iBB, Institute for Bioengineering and Biosciences, Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisbon, Portugal
- Associate Laboratory i4HB-Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Isabel Vasconcelos
- CBQF/Centro de Biotecnologia e Química Fina, Escola Superior de Biotecnologia, Universidade Católica Portuguesa, Porto, Portugal
| | - Nuno P Mira
- iBB, Institute for Bioengineering and Biosciences, Department of Bioengineering, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisbon, Portugal
- Associate Laboratory i4HB-Institute for Health and Bioeconomy at Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Ana Mendes-Ferreira
- WM&B-Laboratory of Wine Microbiology & Biotechnology, Department of Biology and Environment, University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal
- BioISI-Biosystems and Integrative Sciences Institute, Faculdade de Ciências, Universidade de Lisboa Campo Grande, Lisbon, Portugal
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Esteves M, Lage P, Sousa J, Centeno F, de Fátima Teixeira M, Tenreiro R, Mendes-Ferreira A. Biocontrol potential of wine yeasts against four grape phytopathogenic fungi disclosed by time-course monitoring of inhibitory activities. Front Microbiol 2023; 14:1146065. [PMID: 36960294 PMCID: PMC10028181 DOI: 10.3389/fmicb.2023.1146065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 02/17/2023] [Indexed: 03/09/2023] Open
Abstract
Grapes' infection by phytopathogenic fungi may often lead to rot and impair the quality and safety of the final product. Due to the concerns associated with the extensive use of chemicals to control these fungi, including their toxicity for environment and human health, bio-based products are being highly preferred, as eco-friendlier and safer alternatives. Specifically, yeasts have shown to possess antagonistic activity against fungi, being promising for the formulation of new biocontrol products.In this work 397 wine yeasts, isolated from Portuguese wine regions, were studied for their biocontrol potential against common grapes phytopathogenic fungal genera: Aspergillus, Botrytis, Mucor and Penicillium. This set comprised strains affiliated to 32 species distributed among 20 genera. Time-course monitoring of mold growth was performed to assess the inhibitory activity resulting from either diffusible or volatile compounds produced by each yeast strain. All yeasts displayed antagonistic activity against at least one of the mold targets. Mucor was the most affected being strongly inhibited by 68% of the tested strains, followed by Botrytis (20%), Aspergillus (19%) and Penicillium (7%). More notably, the approach used allowed the detection of a wide array of yeast-induced mold response profiles encompassing, besides the decrease of mold growth, the inhibition or delay of spore germination and the complete arrest of mycelial extension, and even its stimulation at different phases. Each factor considered (taxonomic affiliation, mode of action and fungal target) as well as their interactions significantly affected the antagonistic activity of the yeast isolates. The highest inhibitions were mediated by volatile compounds. Total inhibition of Penicillium was achieved by a strain of Metschnikowia pulcherrima, while the best performing yeasts against Mucor, Aspergillus and Botrytis, belong to Lachancea thermotolerans, Hanseniaspora uvarum and Starmerella bacillaris, respectively. Notwithstanding the wide diversity of yeasts tested, only three strains were found to possess a broad spectrum of antagonistic activity, displaying strong or very strong inhibition against the four fungal targets tested. Our results confirm the potential of wine yeasts as biocontrol agents, while highlighting the need for the establishment of fit-for-purpose selection programs depending on the mold target, the timing, and the mode of application.
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Affiliation(s)
- Marcos Esteves
- WM&B—Laboratory of Wine Microbiology and Biotechnology, Department of Biology and Environment, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- BioISI—Biosystems & Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, Lisbon, Portugal
| | - Patrícia Lage
- WM&B—Laboratory of Wine Microbiology and Biotechnology, Department of Biology and Environment, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- BioISI—Biosystems & Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, Lisbon, Portugal
| | - João Sousa
- WM&B—Laboratory of Wine Microbiology and Biotechnology, Department of Biology and Environment, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- BioISI—Biosystems & Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, Lisbon, Portugal
| | - Filipe Centeno
- PROENOL—Indústria Biotecnológica, Lda, Canelas, Portugal
| | | | - Rogério Tenreiro
- BioISI—Biosystems & Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, Lisbon, Portugal
| | - Ana Mendes-Ferreira
- WM&B—Laboratory of Wine Microbiology and Biotechnology, Department of Biology and Environment, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- BioISI—Biosystems & Integrative Sciences Institute, Faculty of Sciences, University of Lisbon, Lisbon, Portugal
- *Correspondence: Ana Mendes-Ferreira,
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Siesto G, Corbo MR, Pietrafesa R, Sinigaglia M, Romano P, Bevilacqua A. Screening of Saccharomyces and Non- Saccharomyces Wine Yeasts for Their Decarboxylase Activity of Amino Acids. Foods 2022; 11:foods11223587. [PMID: 36429178 PMCID: PMC9689846 DOI: 10.3390/foods11223587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/06/2022] [Accepted: 11/09/2022] [Indexed: 11/16/2022] Open
Abstract
The type and quantity of precursor amino acids present in grape must that are used by wine yeasts affect the organoleptic and health properties of wine. The aim of this work was to conduct a preliminary screening among Saccharomyces and non-Saccharomyces indigenous strains, which were previously isolated from different Italian regional grape varieties. This was performed in order to evaluate their decarboxylase activity on certain important amino acids-such as arginine, proline, serine, and tyrosine-that are present in grape must. In particular, a qualitative test on 122 wine yeasts was performed on a decarboxylase medium using arginine, proline, serine, and tyrosine as precursor amino acids. Our results showed a considerable variability among the microbial species tested for this parameter. Indeed, Saccharomyces cerevisiae strains exhibited a high decarboxylase capability of the four amino acids tested; moreover, only 10% of the total (i.e., a total of 81) did not show this trait. A high recovery of decarboxylation ability for at least one amino acid was also found for Zygosaccharomyces bailii and Hanseniaspora spp. These findings can, therefore, promote the inclusion of decarboxylase activity as an additional characteristic in a wine yeast selection program in order to choose starter cultures that possess desirable technological traits; moreover, this also can contribute to the safeguarding of consumer health.
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Affiliation(s)
- Gabriella Siesto
- School of Agricultural, Forestry, Food and Environmental Sciences, University of Basilicata, Via dell’Ateneo Lucano 10, 85100 Potenza, Italy
| | - Maria Rosaria Corbo
- Department of Agriculture, Food, Natural Resources, and Engineering, University of Foggia, 71122 Foggia, Italy
| | - Rocchina Pietrafesa
- School of Agricultural, Forestry, Food and Environmental Sciences, University of Basilicata, Via dell’Ateneo Lucano 10, 85100 Potenza, Italy
| | - Milena Sinigaglia
- Department of Agriculture, Food, Natural Resources, and Engineering, University of Foggia, 71122 Foggia, Italy
| | - Patrizia Romano
- Faculty of Economy, Universitas Mercatorum, Piazza Mattei, 10, 00186 Rome, Italy
- Correspondence: (P.R.); (A.B.)
| | - Antonio Bevilacqua
- Department of Agriculture, Food, Natural Resources, and Engineering, University of Foggia, 71122 Foggia, Italy
- Correspondence: (P.R.); (A.B.)
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Sidari R, Ženišová K, Tobolková B, Belajová E, Cabicarová T, Bučková M, Puškárová A, Planý M, Kuchta T, Pangallo D. Wine Yeasts Selection: Laboratory Characterization and Protocol Review. Microorganisms 2021; 9:2223. [PMID: 34835348 DOI: 10.3390/microorganisms9112223] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 10/21/2021] [Accepted: 10/21/2021] [Indexed: 11/17/2022] Open
Abstract
Wine reflects the specificity of a terroir, including the native microbiota. In contrast to the use of Saccharomyces cerevisiae commercial starters, a way to maintain wines' microbial terroir identities, guaranteeing at the same time the predictability and reproducibility of the wines, is the selection of autochthonous Saccharomyces and non-Saccharomyces strains towards optimal enological characteristics for the chosen area of isolation. This field has been explored but there is a lack of a compendium covering the main methods to use. Autochthonous wine yeasts from different areas of Slovakia were identified and tested, in the form of colonies grown either on nutrient agar plates or in grape must micro-fermentations, for technological and qualitative enological characteristics. Based on the combined results, Saccharomyces cerevisiae PDA W 10, Lachancea thermotolerans 5-1-1 and Metschnikowia pulcherrima 125/14 were selected as potential wine starters. This paper, as a mixture of experimental and review contributions, provides a compendium of methods used to select autochthonous wine yeasts. Thanks to the presence of images, this compendium could guide other researchers in screening their own yeast strains for wine production.
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Abstract
Wine is a product of microbial activities and microbe–microbe interactions. Yeasts are the principal microorganisms responsible for the evolution and fulfillment of alcoholic fermentation. Several species and strains coexist and interact with their environment and with each other during the fermentation course. Yeast–yeast interactions occur even from the early stages of fermentation, determining yeast community structure and dynamics during the process. Different types of microbial interactions (e.g., mutualism and commensalism or competition and amensalism) may exert positive or negative effects, respectively, on yeast populations. Interactions are intimately linked to yeast metabolic activities that influence the wine analytical profile and shape the wine character. In this context, much attention has been given during the last years to the interactions between Saccharomyces cerevisiae (SC) and non-Saccharomyces (NS) yeast species with respect to their metabolic contribution to wine quality. Yet, there is still a significant lack of knowledge on the interaction mechanisms modulating yeast behavior during mixed culture fermentation, while much less is known about the interactions between the various NS species or between SC and Saccharomyces non-cerevisiae (SNC) yeasts. There is still much to learn about their metabolic footprints and the genetic mechanisms that alter yeast community equilibrium in favor of one species or another. Gaining deeper insights on yeast interactions in the grape–wine ecosystem sets the grounds for understanding the rules underlying the function of the wine microbial system and provides means to better control and improve oenological practices.
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Drumonde-Neves J, Čadež N, Reyes-Domínguez Y, Gallmetzer A, Schuller D, Lima T, Pais C, Franco-Duarte R. Clavispora santaluciae f.a., sp. nov., a novel ascomycetous yeast species isolated from grapes. Int J Syst Evol Microbiol 2021; 70:6307-6312. [PMID: 33090949 DOI: 10.1099/ijsem.0.004531] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
During a study of yeast diversity in Azorean vineyards, four strains were isolated which were found to represent a novel yeast species based on the sequences of the internal transcribed spacer (ITS) region (ITS1-5.8S-ITS2) and of the D1/D2 domain of the large subunit (LSU) rRNA gene, together with their physiological characteristics. An additional strain isolated from Drosophila suzukii in Italy had identical D1/D2 sequences and very similar ITS regions (five nucleotide substitutions) to the Azorean strains. Phylogenetic analysis using sequences of the ITS region and D1/D2 domain showed that the five strains are closely related to Clavispora lusitaniae, although with 56 nucleotide differences in the D2 domain. Intraspecies variation revealed between two and five nucleotide differences, considering the five strains of Clavispora santaluciae. Some phenotypic discrepancies support the separation of the new species from their closely related ones, such as the inability to grow at temperatures above 35 °C, to produce acetic acid and the capacity to assimilate starch. Neither conjugations nor ascospore formation were observed in any of the strains. The name Clavispora santaluciae f.a., sp. nov., is proposed to accommodate the above noted five strains (holotype, CBS 16465T; MycoBank no., MB 835794).
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Affiliation(s)
- João Drumonde-Neves
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Portugal
- IITAA - Institute of Agricultural and Environmental Research and Technology, University of Azores, Angra do Heroísmo, Portugal
| | - Neža Čadež
- University of Ljubljana Biotechnical Faculty, Department of Food Science and Technology, University of Ljubljana, Ljubljana, Slovenia
| | | | | | - Dorit Schuller
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Portugal
| | - Teresa Lima
- IITAA - Institute of Agricultural and Environmental Research and Technology, University of Azores, Angra do Heroísmo, Portugal
| | - Célia Pais
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Portugal
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Portugal
| | - Ricardo Franco-Duarte
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Portugal
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Portugal
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Chalvantzi I, Banilas G, Tassou C, Nisiotou A. Patterns of Genetic Diversity and the Invasion of Commercial Starters in Saccharomyces cerevisiae Vineyard Populations of Santorini Island. Foods 2020; 9:E561. [PMID: 32370232 PMCID: PMC7278685 DOI: 10.3390/foods9050561] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 04/15/2020] [Accepted: 04/20/2020] [Indexed: 12/29/2022] Open
Abstract
Autochthonous Saccharomyces cerevisiae vineyard populations are important components of the grape/wine system. Besides their direct impact on winemaking, they also constitute an untapped reservoir of genotypes with special technological attributes for the wine industry. Research so far on S. cerevisiae populations has focused on spatial distribution on large scales, yet little is known about the genetic variability of populations within viticultural zones and their temporal genotypic variation. Here, S. cerevisiae populations from different vineyards in Santorini, a small Aegean island, were genotyped and their genetic diversity was assessed within and between vineyards during two consecutive years. Despite the relative geographical isolation of the island, a relatively high genetic diversity was uncovered. The vast majority of genotypes were vineyard-specific, while in one of the vintages, significant differences in the genotypic composition of vineyards were detected. Overall, higher differences were detected between vintages rather than among vineyards. Notably, only four genotypes were common for the two vintages, three of which were commercial S. cerevisiae strains, probably "escapees" from wineries. Nevertheless, the populations of the two vintages were not genetically distinct. Present results highlight the magnitude of genetic diversity in natural wine yeast populations on a small spatial scale, yet the invasion of commercial starters may constitute a potential risk for loss of local yeast biodiversity. However, present results show that industrial strains do not necessarily dominate over the natural strains or their high abundance may be temporary.
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Affiliation(s)
- Ioanna Chalvantzi
- Institute of Technology of Agricultural Products, Hellenic Agricultural Organization “Demeter”, Sofokli Venizelou 1, GR-14123 Lykovryssi, Greece; (I.C.); (C.T.)
- Department of Wine, Vine and Beverage Sciences, University of West Attica, Ag. Spyridonos 28, GR-12243 Athens, Greece;
| | - Georgios Banilas
- Department of Wine, Vine and Beverage Sciences, University of West Attica, Ag. Spyridonos 28, GR-12243 Athens, Greece;
| | - Chrysoula Tassou
- Institute of Technology of Agricultural Products, Hellenic Agricultural Organization “Demeter”, Sofokli Venizelou 1, GR-14123 Lykovryssi, Greece; (I.C.); (C.T.)
| | - Aspasia Nisiotou
- Institute of Technology of Agricultural Products, Hellenic Agricultural Organization “Demeter”, Sofokli Venizelou 1, GR-14123 Lykovryssi, Greece; (I.C.); (C.T.)
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Raymond Eder ML, Fariña L, Dellacassa E, Carrau F, Rosa AL. Chemical and sensory features of Torrontés Riojano sparkling wines produced by second fermentation in bottle using different Saccharomyces strains. FOOD SCI TECHNOL INT 2020; 26:512-519. [PMID: 32151167 DOI: 10.1177/1082013220910534] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Chemical and sensory properties of Torrontés Riojano sparkling wines, prepared using second fermentation with Saccharomyces strains EC1118, bayanus C12 and IFI473I, were explored. All sparkling wines showed high levels of several volatile ethyl esters and terpenes associated to fruity and floral aromas. The sensory profiles showed significant differences for the floral aroma descriptor among EC1118, bayanus C12 and IFI473I and for bubble persistence for strain bayanus C12. Our results suggest that the sensory properties of these sparkling wines could be dependent on the chemical and organoleptic properties of the base wine more than the yeast strain used for second fermentation.
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Affiliation(s)
- María Laura Raymond Eder
- Laboratorio de Genética y Biología Molecular, IRNASUS-CONICET, Universidad Católica de Córdoba, Córdoba, Argentina.,Bioquímica de Alimentos II, Facultad de Ciencias Químicas, Universidad Católica de Córdoba, Córdoba, Argentina
| | - Laura Fariña
- Área Enología y Biotecnología de Fermentaciones, Universidad de la República, Montevideo, Uruguay.,Laboratorio de Biotecnología de Aromas, Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Eduardo Dellacassa
- Laboratorio de Biotecnología de Aromas, Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Francisco Carrau
- Área Enología y Biotecnología de Fermentaciones, Universidad de la República, Montevideo, Uruguay
| | - Alberto Luis Rosa
- Laboratorio de Genética y Biología Molecular, IRNASUS-CONICET, Universidad Católica de Córdoba, Córdoba, Argentina.,Bioquímica de Alimentos II, Facultad de Ciencias Químicas, Universidad Católica de Córdoba, Córdoba, Argentina.,Establecimiento Finca las Acacias, Sierras de Calamuchita, Córdoba, Argentina
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12
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Mateus D, Sousa S, Coimbra C, S. Rogerson F, Simões J. Identification and Characterization of Non- Saccharomyces Species Isolated from Port Wine Spontaneous Fermentations. Foods 2020; 9:foods9020120. [PMID: 31979400 PMCID: PMC7074312 DOI: 10.3390/foods9020120] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 01/18/2020] [Accepted: 01/21/2020] [Indexed: 11/22/2022] Open
Abstract
In winemaking, non-Saccharomyces yeast species contribute important organoleptic complexity. Current interest focuses on abundant and dominant strains characteristically present in the early phase of spontaneous alcoholic fermentations. Non-Saccharomyces species are particularly relevant in Port wine production such that the fermentation is prematurely stopped, after the metabolism of only one half of the available sugar, through fortification with aguardente. This work aimed to isolate, identify and characterize non-Saccharomyces species present in spontaneously fermenting Port. To accomplish these goals, yeasts were isolated from a selection of frozen must samples (2012–2016 harvests), using a pre-screening process choosing only the best candidates based on the organoleptic quality of the corresponding fortified wine. From five hundred non-Saccharomyces isolates, twelve species were identified. The three most abundant species, Hanseniaspora uvarum, Lachancea thermotolerans, and Metschnikowia pulcherrima, representing 89% of the isolates, exhibited particularly high diversity with high growth performance variability when exposed to typical stress conditions associated with common enological parameters. Less abundant species included Issatchenkia orientalis, Torulaspora delbrueckii, Hanseniaspora vineae, Hanseniaspora osmophila, Candida zemplinina, Rhodotorula mucilaginosa, Hanseniaspora guilliermondii, Issatchenkia occidentalis, and Zygosaccharomyces bisporus. This is the first study providing insights into the identification and characterization of non-Saccharomyces species responsible for spontaneous Port wine production.
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Affiliation(s)
- Denisa Mateus
- Genomics Unit, Biocant-Biotechnology Innovation Center, Biocant Park, Núcleo 04 Lote 3, 3060-197 Cantanhede, Portugal; (D.M.); (S.S.)
| | - Susana Sousa
- Genomics Unit, Biocant-Biotechnology Innovation Center, Biocant Park, Núcleo 04 Lote 3, 3060-197 Cantanhede, Portugal; (D.M.); (S.S.)
| | - Cláudia Coimbra
- Ângelo Coimbra, S.A., Zona Industrial Maia, Sector IV Moreira, 4470-460 Maia, Portugal;
| | - Frank S. Rogerson
- Symington Family Estates, Vinhos S.A. Travessa Barão de Forrester 86, Apartado 26, 4431-901 Vila Nova de Gaia, Portugal;
| | - João Simões
- Genomics Unit, Biocant-Biotechnology Innovation Center, Biocant Park, Núcleo 04 Lote 3, 3060-197 Cantanhede, Portugal; (D.M.); (S.S.)
- Correspondence:
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13
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Morard M, Macías LG, Adam AC, Lairón-Peris M, Pérez-Torrado R, Toft C, Barrio E. Aneuploidy and Ethanol Tolerance in Saccharomyces cerevisiae. Front Genet 2019; 10:82. [PMID: 30809248 PMCID: PMC6379819 DOI: 10.3389/fgene.2019.00082] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 01/28/2019] [Indexed: 12/31/2022] Open
Abstract
Response to environmental stresses is a key factor for microbial organism growth. One of the major stresses for yeasts in fermentative environments is ethanol. Saccharomyces cerevisiae is the most tolerant species in its genus, but intraspecific ethanol-tolerance variation exists. Although, much effort has been done in the last years to discover evolutionary paths to improve ethanol tolerance, this phenotype is still hardly understood. Here, we selected five strains with different ethanol tolerances, and used comparative genomics to determine the main factors that can explain these phenotypic differences. Surprisingly, the main genomic feature, shared only by the highest ethanol-tolerant strains, was a polysomic chromosome III. Transcriptomic data point out that chromosome III is important for the ethanol stress response, and this aneuploidy can be an advantage to respond rapidly to ethanol stress. We found that chromosome III copy numbers also explain differences in other strains. We show that removing the extra chromosome III copy in an ethanol-tolerant strain, returning to euploidy, strongly compromises its tolerance. Chromosome III aneuploidy appears frequently in ethanol-tolerance evolution experiments, and here, we show that aneuploidy is also used by natural strains to enhance their ethanol tolerance.
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Affiliation(s)
- Miguel Morard
- Departament de Genètica, Universitat de València, Valencia, Spain.,Departamento de Biotecnología, Instituto de Agroquímica y Tecnología de los Alimentos (IATA), CSIC, Valencia, Spain
| | - Laura G Macías
- Departament de Genètica, Universitat de València, Valencia, Spain.,Departamento de Biotecnología, Instituto de Agroquímica y Tecnología de los Alimentos (IATA), CSIC, Valencia, Spain
| | - Ana C Adam
- Departamento de Biotecnología, Instituto de Agroquímica y Tecnología de los Alimentos (IATA), CSIC, Valencia, Spain
| | - María Lairón-Peris
- Departamento de Biotecnología, Instituto de Agroquímica y Tecnología de los Alimentos (IATA), CSIC, Valencia, Spain
| | - Roberto Pérez-Torrado
- Departamento de Biotecnología, Instituto de Agroquímica y Tecnología de los Alimentos (IATA), CSIC, Valencia, Spain
| | - Christina Toft
- Departament de Genètica, Universitat de València, Valencia, Spain.,Departamento de Biotecnología, Instituto de Agroquímica y Tecnología de los Alimentos (IATA), CSIC, Valencia, Spain
| | - Eladio Barrio
- Departament de Genètica, Universitat de València, Valencia, Spain.,Departamento de Biotecnología, Instituto de Agroquímica y Tecnología de los Alimentos (IATA), CSIC, Valencia, Spain
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14
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Adamczyk J, Deregowska A, Skoneczny M, Skoneczna A, Kwiatkowska A, Potocki L, Rawska E, Pabian S, Kaplan J, Lewinska A, Wnuk M. Adaptive response to chronic mild ethanol stress involves ROS, sirtuins and changes in chromosome dosage in wine yeasts. Oncotarget 2017; 7:29958-76. [PMID: 27074556 PMCID: PMC5058656 DOI: 10.18632/oncotarget.8673] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 04/03/2016] [Indexed: 12/23/2022] Open
Abstract
Industrial yeast strains of economic importance used in winemaking and beer production are genomically diverse and subjected to harsh environmental conditions during fermentation. In the present study, we investigated wine yeast adaptation to chronic mild alcohol stress when cells were cultured for 100 generations in the presence of non-cytotoxic ethanol concentration. Ethanol-induced reactive oxygen species (ROS) and superoxide signals promoted growth rate during passages that was accompanied by increased expression of sirtuin proteins, Sir1, Sir2 and Sir3, and DNA-binding transcription regulator Rap1. Genome-wide array-CGH analysis revealed that yeast genome was shaped during passages. The gains of chromosomes I, III and VI and significant changes in the gene copy number in nine functional gene categories involved in metabolic processes and stress responses were observed. Ethanol-mediated gains of YRF1 and CUP1 genes were the most accented. Ethanol also induced nucleolus fragmentation that confirms that nucleolus is a stress sensor in yeasts. Taken together, we postulate that wine yeasts of different origin may adapt to mild alcohol stress by shifts in intracellular redox state promoting growth capacity, upregulation of key regulators of longevity, namely sirtuins and changes in the dosage of genes involved in the telomere maintenance and ion detoxification.
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Affiliation(s)
- Jagoda Adamczyk
- Department of Genetics, University of Rzeszow, Rejtana, Rzeszow, Poland
| | - Anna Deregowska
- Department of Genetics, University of Rzeszow, Rejtana, Rzeszow, Poland.,Postgraduate School of Molecular Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Marek Skoneczny
- Department of Genetics, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | - Adrianna Skoneczna
- Laboratory of Mutagenesis and DNA Repair, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland
| | | | - Leszek Potocki
- Department of Genetics, University of Rzeszow, Rejtana, Rzeszow, Poland
| | - Ewa Rawska
- Department of Genetics, University of Rzeszow, Rejtana, Rzeszow, Poland
| | - Sylwia Pabian
- Department of Genetics, University of Rzeszow, Rejtana, Rzeszow, Poland
| | - Jakub Kaplan
- Department of Genetics, University of Rzeszow, Rejtana, Rzeszow, Poland
| | - Anna Lewinska
- Department of Biochemistry and Cell Biology, University of Rzeszow, Rzeszow, Poland
| | - Maciej Wnuk
- Department of Genetics, University of Rzeszow, Rejtana, Rzeszow, Poland
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15
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Setati ME, Jacobson D, Bauer FF. Sequence-based Analysis of the Vitis vinifera L. cv Cabernet Sauvignon Grape Must Mycobiome in Three South African Vineyards Employing Distinct Agronomic Systems. Front Microbiol 2015; 6:1358. [PMID: 26648930 PMCID: PMC4663253 DOI: 10.3389/fmicb.2015.01358] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 11/16/2015] [Indexed: 11/22/2022] Open
Abstract
Recent microbiomic research of agricultural habitats has highlighted tremendous microbial biodiversity associated with such ecosystems. Data generated in vineyards have furthermore highlighted significant regional differences in vineyard biodiversity, hinting at the possibility that such differences might be responsible for regional differences in wine style and character, a hypothesis referred to as "microbial terroir." The current study further contributes to this body of work by comparing the mycobiome associated with South African (SA) Cabernet Sauvignon grapes in three neighboring vineyards that employ different agronomic approaches, and comparing the outcome with similar data sets from Californian vineyards. The aim of this study was to fully characterize the mycobiomes associated with the grapes from these vineyards. The data revealed approximately 10 times more fungal diversity than what is typically retrieved from culture-based studies. The Biodynamic vineyard was found to harbor a more diverse fungal community (H = 2.6) than the conventional (H = 2.1) and integrated (H = 1.8) vineyards. The data show that ascomycota are the most abundant phylum in the three vineyards, with Aureobasidium pullulans and its close relative Kabatiella microsticta being the most dominant fungi. This is the first report to reveal a high incidence of K. microsticta in the grape/wine ecosystem. Different common wine yeast species, such as Metschnikowia pulcherrima and Starmerella bacillaris dominated the mycobiome in the three vineyards. The data show that the filamentous fungi are the most abundant community in grape must although they are not regarded as relevant during wine fermentation. Comparison of metagenomic datasets from the three SA vineyards and previously published data from Californian vineyards revealed only 25% of the fungi in the SA dataset was also present in the Californian dataset, with greater variation evident amongst ubiquitous epiphytic fungi.
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Affiliation(s)
- Mathabatha E. Setati
- Institute for Wine Biotechnology, Stellenbosch UniversityStellenbosch, South Africa
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16
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Serrazanetti DI, Patrignani F, Russo A, Vannini L, Siroli L, Gardini F, Lanciotti R. Cell membrane fatty acid changes and desaturase expression of Saccharomyces bayanus exposed to high pressure homogenization in relation to the supplementation of exogenous unsaturated fatty acids. Front Microbiol 2015; 6:1105. [PMID: 26528258 PMCID: PMC4600958 DOI: 10.3389/fmicb.2015.01105] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 09/25/2015] [Indexed: 11/13/2022] Open
Abstract
Aims: The aim of this work was to study the responses of Saccharomyces bayanus cells exposed to sub-lethal high-pressure homogenization (HPH) and determine whether the plasmatic membrane can sense HPH in the presence, or absence, of exogenous unsaturated fatty acids (UFAs) in the growth medium. Methods and Results: High-pressure homogenization damaged and caused the collapse of cell walls and membranes of a portion of cells; however, HPH did not significantly affect S. bayanus cell viability (less than 0.3 Log CFU ml-1). HPH strongly affected the membrane fatty acid (FA) composition by increasing the percentage of total UFA when compared with saturated fatty acids. The gene expression showed that the transcription of OLE1, ERG3, and ERG11 increased after HPH. The presence of exogenous UFA abolished HPH-induced effects on the OLE1 and ERG3 genes, increased the percentage of membrane lipids and decreased the expression of OLE1 and ERG3 within 30 min of treatment. Conclusion: The results suggest a key role for UFA in the microbial cell response to sub-lethal stress. In addition, these data provide insight into the molecular basis of the response of S. bayanus to this innovative technology. Significance and Impact of the Study: Elucidation of the mechanism of action for sub-lethal HPH will enable the utilization of this technology to modulate the starter performance at the industrial scale.
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Affiliation(s)
- Diana I Serrazanetti
- Centro Interdipartimentale di Ricerca Industriale Agroalimentare, Università degli Studi di Bologna Cesena, Italy
| | - Francesca Patrignani
- Dipartimento di Scienze e Tecnologie Agro-alimentari, Università degli Studi di Bologna Cesena, Italy
| | - Alessandra Russo
- Servizio Sanitario Regionale, Azienda Unità Sanitaria Locale di Imola Imola, Italy
| | - Lucia Vannini
- Centro Interdipartimentale di Ricerca Industriale Agroalimentare, Università degli Studi di Bologna Cesena, Italy ; Dipartimento di Scienze e Tecnologie Agro-alimentari, Università degli Studi di Bologna Cesena, Italy
| | - Lorenzo Siroli
- Dipartimento di Scienze e Tecnologie Agro-alimentari, Università degli Studi di Bologna Cesena, Italy
| | - Fausto Gardini
- Centro Interdipartimentale di Ricerca Industriale Agroalimentare, Università degli Studi di Bologna Cesena, Italy ; Dipartimento di Scienze e Tecnologie Agro-alimentari, Università degli Studi di Bologna Cesena, Italy
| | - Rosalba Lanciotti
- Centro Interdipartimentale di Ricerca Industriale Agroalimentare, Università degli Studi di Bologna Cesena, Italy ; Dipartimento di Scienze e Tecnologie Agro-alimentari, Università degli Studi di Bologna Cesena, Italy
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