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Eicher C, Tran T, Munier E, Coulon J, Favier M, Alexandre H, Reguant C, Grandvalet C. Influence of pH on Oenococcus oeni metabolism: Can the slowdown of citrate consumption improve its acid tolerance? Food Res Int 2024; 179:114027. [PMID: 38342547 DOI: 10.1016/j.foodres.2024.114027] [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: 12/01/2023] [Revised: 01/09/2024] [Accepted: 01/12/2024] [Indexed: 02/13/2024]
Abstract
Oenococcus oeni is the lactic acid bacteria most suited to carry out malolactic fermentation in wine, converting L-malic acid into L-lactic acid and carbon dioxide, thereby deacidifying wines. Indeed, wine is a harsh environment for microbial growth, partly because of its low pH. By metabolizing citrate, O. oeni maintains its homeostasis under acid conditions. Indeed, citrate consumption activates the proton motive force, helps to maintain intracellular pH, and enhances bacterial growth when it is co-metabolized with sugars. In addition, citrate metabolism is responsible for diacetyl production, an aromatic compound which bestows a buttery character to wine. However, an inhibitory effect of citrate on O. oeni growth at low pH has been highlighted in recent years. In order to understand how citrate metabolism can be linked to the acid tolerance of this bacterium, consumption of citrate was investigated in eleven O. oeni strains. In addition, malate and sugar consumptions were also monitored, as they can be impacted by citrate metabolism. This experiment highlighted the huge diversity of metabolisms between strains depending on their origin. It also showed the capacity of O. oeni to de novo metabolize certain end-products such as L-lactate and mannitol, a phenomenon never before demonstrated. It also enabled drawing hypotheses concerning the two positive effects that the slowing down of citrate metabolism could have on biomass production and malolactic fermentation occurring under low pH conditions.
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Affiliation(s)
- Camille Eicher
- UMR PAM, Université de Bourgogne, Institut Agro, INRAE, Dijon, France.
| | - Thierry Tran
- UMR PAM, Université de Bourgogne, Institut Agro, INRAE, Dijon, France
| | - Edouard Munier
- UMR PAM, Université de Bourgogne, Institut Agro, INRAE, Dijon, France
| | | | | | - Hervé Alexandre
- UMR PAM, Université de Bourgogne, Institut Agro, INRAE, Dijon, France
| | - Cristina Reguant
- Universitat Rovira i Virgili, Grup de Biotecnologia Enològica, Departament de Bioquímica i Biotecnologia, Tarragona, Catalonia, Spain
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Gutiérrez AR, Santamaría P, González-Arenzana L, Garijo P, Olarte C, Sanz S. Yeasts Inoculation Effect on Bacterial Development in Carbonic Maceration Wines Elaboration. Foods 2023; 12:2755. [PMID: 37509848 PMCID: PMC10378745 DOI: 10.3390/foods12142755] [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: 06/29/2023] [Revised: 07/12/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
Carbonic maceration (CM) vinification is a very traditional method that allows saving energy without great equipment investment, obtaining high-quality wines. However, due to its particularities, CM winemaking implies a higher risk of microbial alteration. This work studies the evolution of bacterial population along carbonic maceration wines elaboration with and without yeast inoculation. In the same way, two strategies of yeast inoculation were studied: "pied de cuve" and Active Dry Yeasts (ADY) seed. For this purpose, three conditions were assayed: spontaneous fermentation (without inoculation), "pied de cuve" technology, and ADY inoculation. For each condition, two winemaking methods were compared: carbonic maceration and the standard method of destemming and crushing (DC). The bacterial evolution (lactic acid and acetic acid bacteria) was followed in different fermentation stages. Finally, the wines obtained were analysed (pH and volatile acidity). In the non-inoculated wines produced by CM, high development of the bacterial population was observed (counts of acetic acid bacteria around 4.3 log cfu/mL), and finished wines presented high values of volatile acidity (>1.5 g/L), which did not occur in the inoculated vinifications (counts of acetic acid bacteria around 1.5 log cfu/mL and 0.5 g/l of volatile acidity). Thus, the control of yeast population, as a "pied de cuve" as ADY seed, seems to be an effective tool to avoid bacterial alterations in CM vinifications.
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Affiliation(s)
- Ana Rosa Gutiérrez
- ICVV, Instituto de Ciencias de la Vid y el Vino (Universidad de La Rioja, Gobierno de La Rioja, CSIC), Finca La Grajera, Ctra. LO-20- salida 13, 26071 Logroño, Spain
| | - Pilar Santamaría
- ICVV, Instituto de Ciencias de la Vid y el Vino (Universidad de La Rioja, Gobierno de La Rioja, CSIC), Finca La Grajera, Ctra. LO-20- salida 13, 26071 Logroño, Spain
| | - Lucía González-Arenzana
- ICVV, Instituto de Ciencias de la Vid y el Vino (Universidad de La Rioja, Gobierno de La Rioja, CSIC), Finca La Grajera, Ctra. LO-20- salida 13, 26071 Logroño, Spain
| | - Patrocinio Garijo
- ICVV, Instituto de Ciencias de la Vid y el Vino (Universidad de La Rioja, Gobierno de La Rioja, CSIC), Finca La Grajera, Ctra. LO-20- salida 13, 26071 Logroño, Spain
| | - Carmen Olarte
- Departamento de Agricultura y Alimentación, Universidad de La Rioja, 26006 Logroño, Spain
| | - Susana Sanz
- Departamento de Agricultura y Alimentación, Universidad de La Rioja, 26006 Logroño, Spain
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3
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Balmaseda A, Lorentzen M, Dutilh L, Bauduin R, Guichard H, Ollivier S, Miot-Sertier C, Lucas PM. Alcoholic fermentation drives the selection of Oenococcus oeni strains in wine but not in cider. Int J Food Microbiol 2023; 400:110276. [PMID: 37270987 DOI: 10.1016/j.ijfoodmicro.2023.110276] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 05/10/2023] [Accepted: 05/28/2023] [Indexed: 06/06/2023]
Abstract
Oenococcus oeni is the predominant lactic acid bacteria species in wine and cider, where it performs the malolactic fermentation (MLF). The O. oeni strains analyzed to date form four major genetic lineages named phylogroups A, B, C and D. Most of the strains isolated from wine, cider, or kombucha belong to phylogroups A, B + C, and D, respectively, although B and C strains were also detected in wine. This study was performed to better understand the distribution of the phylogroups in wine and cider. Their population dynamics were determined by qPCR all through wine and cider productions, and the behavior of the strains was analyzed in synthetic wines and ciders. Phylogroups A, B and C were all represented in grape must and throughout the alcoholic fermentation, but on the transition to MLF, only phylogroup A remained at high levels in all wine productions. In the case of cider, phylogroups A, B and C were detected in stable levels during the process. When they were tested in synthetic wine and cider, all phylogroups performed MLF, but with different survival rates depending on the ethanol content. In this sense, ethanol and fermentation kinetics are the main agent that drives the selection of phylogroup A strains in wine, while B and C strains dominates in cider containing less ethanol.
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Affiliation(s)
- Aitor Balmaseda
- Univ. Bordeaux, INRAE, Bordeaux INP, UMR 1366, OENO, ISVV, F-33140 Villenave d'Ornon, France; Bordeaux Sciences Agro, F-33170 Gradignan, France; Universitat Rovira i Virgili, Departament de Bioquímica i Biotecnologia, Facultat d'Enologia, Grup de Biotecnologia Enològica, C/Marcel·líDomingo 1, 43007 Tarragona, Catalonia, Spain.
| | - Marc Lorentzen
- Univ. Bordeaux, INRAE, Bordeaux INP, UMR 1366, OENO, ISVV, F-33140 Villenave d'Ornon, France; Bordeaux Sciences Agro, F-33170 Gradignan, France
| | - Lucie Dutilh
- Univ. Bordeaux, INRAE, Bordeaux INP, UMR 1366, OENO, ISVV, F-33140 Villenave d'Ornon, France; Bordeaux Sciences Agro, F-33170 Gradignan, France
| | - Rémi Bauduin
- Institut Français des Produits Cidricoles (IFPC), Domaine de la Motte, Le Rheu 35653, France
| | - Hugues Guichard
- Institut Français des Produits Cidricoles (IFPC), Domaine de la Motte, Le Rheu 35653, France
| | - Séverine Ollivier
- Institut Français des Produits Cidricoles (IFPC), Domaine de la Motte, Le Rheu 35653, France
| | - Cécile Miot-Sertier
- Univ. Bordeaux, INRAE, Bordeaux INP, UMR 1366, OENO, ISVV, F-33140 Villenave d'Ornon, France; Bordeaux Sciences Agro, F-33170 Gradignan, France
| | - Patrick M Lucas
- Univ. Bordeaux, INRAE, Bordeaux INP, UMR 1366, OENO, ISVV, F-33140 Villenave d'Ornon, France; Bordeaux Sciences Agro, F-33170 Gradignan, France
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Miotto SPS, Fensterseifer LC, de Souza Hassemer G, Martins G, Ficagna E, Steffens J, Puton BMS, Backes GT, Valduga E, Cansian RL. Malolactic fermentation of lactic acid bacteria isolated from southern Brazilian red wine. World J Microbiol Biotechnol 2023; 39:201. [PMID: 37202540 DOI: 10.1007/s11274-023-03645-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 05/08/2023] [Indexed: 05/20/2023]
Abstract
The objective was to isolate lactic acid bacteria (LAB) from southern Brazil's wines and investigate their potential as starter cultures for malolactic fermentation (MLF) in Merlot (ME) and Cabernet Sauvignon (CS) wines through the fermentative capacity. The LAB were isolated from CS, ME, and Pinot Noir (PN) wines in the 2016 and 2017 harvests and evaluated for morphological (color and shape of the colonies), genetic, fermentative (increase in pH, acidity reduction, preservation of anthocyanins, decarboxylation of L-malic acid, yield of L-lactic acid, and content of reduced sugars), and sensory characteristics. Four strains were identified as Oenococcus oeni [CS(16)3B1, ME(16)1A1, ME(17)26, and PN(17)65], one as Lactiplantibacillus plantarum [PN(17)75], and one as Paucilactobacillus suebicus [CS(17)5]. Isolates were evaluated in the MLF and compared to a commercial strain (O. oeni), as well as a control (without inoculation and spontaneous MLF), and standard (without MLF). CS(16)3B1 and ME(17)26 isolates finished the MLF for CS and ME wines, respectively, after 35 days, similar to the commercial strain, and CS(17)5 and ME(16)1A1 isolates ended the MLF in 45 days. In the sensory analysis, ME wines with isolated strains received better scores for flavor and overall quality than the control. Compared to the commercial strain, CS(16)3B1 isolate obtained the highest scores for buttery flavor and taste persistence. CS(17)5 isolate received the higher scores for a fruity flavor and overall quality and the lowest for a buttery flavor. The native LAB displayed MLF potential, regardless of the year and grape species from which they were isolated.
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Affiliation(s)
- Shana Paula Segala Miotto
- Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul, Campus Bento Gonçalves. Av. Osvaldo Aranha, 540. Zip code, Bento Gonçalves, 95700-000, RS, Brazil
| | - Letícia Caroline Fensterseifer
- Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul, Campus Bento Gonçalves. Av. Osvaldo Aranha, 540. Zip code, Bento Gonçalves, 95700-000, RS, Brazil
| | - Guilherme de Souza Hassemer
- Universidade Regional Integrada do Alto Uruguai e das Missões, Campus Erechim. Av. Sete de Setembro, 1621. Zip code, Erechim, 99709-910, RS, Brazil
| | - Guilherme Martins
- Institut des Sciences de la Vigne et du Vin - ISVV, Université de Bordeaux. 210 Chem. de Leysotte, Villenave-d'Ornon, 33140, France
| | - Evandro Ficagna
- Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul, Campus Bento Gonçalves. Av. Osvaldo Aranha, 540. Zip code, Bento Gonçalves, 95700-000, RS, Brazil
| | - Juliana Steffens
- Universidade Regional Integrada do Alto Uruguai e das Missões, Campus Erechim. Av. Sete de Setembro, 1621. Zip code, Erechim, 99709-910, RS, Brazil
| | - Bruna Maria Saorin Puton
- Universidade Regional Integrada do Alto Uruguai e das Missões, Campus Erechim. Av. Sete de Setembro, 1621. Zip code, Erechim, 99709-910, RS, Brazil.
| | - Geciane Toniazzo Backes
- Universidade Regional Integrada do Alto Uruguai e das Missões, Campus Erechim. Av. Sete de Setembro, 1621. Zip code, Erechim, 99709-910, RS, Brazil
| | - Eunice Valduga
- Universidade Regional Integrada do Alto Uruguai e das Missões, Campus Erechim. Av. Sete de Setembro, 1621. Zip code, Erechim, 99709-910, RS, Brazil
| | - Rogério Luis Cansian
- Universidade Regional Integrada do Alto Uruguai e das Missões, Campus Erechim. Av. Sete de Setembro, 1621. Zip code, Erechim, 99709-910, RS, Brazil
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Barchi Y, Philippe C, Chaïb A, Oviedo-Hernandez F, Claisse O, Le Marrec C. Phage Encounters Recorded in CRISPR Arrays in the Genus Oenococcus. Viruses 2022; 15:15. [PMID: 36680056 PMCID: PMC9867325 DOI: 10.3390/v15010015] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 12/10/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022] Open
Abstract
The Oenococcus genus comprises four recognized species, and members have been found in different types of beverages, including wine, kefir, cider and kombucha. In this work, we implemented two complementary strategies to assess whether oenococcal hosts of different species and habitats were connected through their bacteriophages. First, we investigated the diversity of CRISPR-Cas systems using a genome-mining approach, and CRISPR-endowed strains were identified in three species. A census of the spacers from the four identified CRISPR-Cas loci showed that each spacer space was mostly dominated by species-specific sequences. Yet, we characterized a limited records of potentially recent and also ancient infections between O. kitaharae and O. sicerae and phages of O. oeni, suggesting that some related phages have interacted in diverse ways with their Oenococcus hosts over evolutionary time. Second, phage-host interaction analyses were performed experimentally with a diversified panel of phages and strains. None of the tested phages could infect strains across the species barrier. Yet, some infections occurred between phages and hosts from distinct beverages in the O. oeni species.
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Affiliation(s)
| | | | | | | | | | - Claire Le Marrec
- UMR Oenologie 1366, Univ. Bordeaux, INRAE, Bordeaux INP, Bordeaux Sciences Agro, Institut des Sciences de la Vigne et du Vin, 33882 Villenave d’Ornon, France
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6
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Exploring the Core Microbiota of Four Different Traditional Fermented Beverages from the Colombian Andes. FERMENTATION 2022. [DOI: 10.3390/fermentation8120733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Fermentation is an ancient process used to prepare and preserve food. Currently, fermented beverages are part of the culture of people living in the Colombian Andean Region, and they are a vital part of their cosmology and ancestral vision. Chicha, Forcha, Champús, and Masato are some of the most common Colombian Andes region’s traditional fermented beverages. These drinks come from the fermentation of maize (Zea maize), but other cereals such as wheat or rye, could be used. The fermentation is carried out by a set of bacteria and yeasts that provide characteristic organoleptic properties of each beverage. In this work, the information collected from the metagenomics analyses by sequencing ITS 1-4 (Internal Transcriber Spacer) and the 16S ribosomal gene for fungi and the V3-V4 region of the rDNA for bacteria allowed us to identify the diversity present in these autochthonous fermented beverages made with maize. The sequencing analysis showed the presence of 39 bacterial and 20 fungal genera. In addition, we determined that only nine genera of bacteria and two genera of fungi affect the organoleptic properties of smell, colour, and flavour, given the production of compounds such as lactic acid, alcohol, and phenols, highlighting the critical role of these microorganisms. Our findings provide new insights into the core microbiota of these beverages, represented by Lactobacillus fermentum, Acetobacter pasteurianus, and Saccharomyces cerevisiae.
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Chaïb A, Philippe C, Jaomanjaka F, Barchi Y, Oviedo-Hernandez F, Claisse O, Le Marrec C. Phage-host interactions as a driver of population dynamics during wine fermentation: Betting on underdogs. Int J Food Microbiol 2022; 383:109936. [PMID: 36179497 DOI: 10.1016/j.ijfoodmicro.2022.109936] [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: 02/16/2022] [Revised: 09/03/2022] [Accepted: 09/15/2022] [Indexed: 10/14/2022]
Abstract
Winemaking is a complex process in which numerous microorganisms, mainly yeasts and lactic acid bacteria (LAB), play important roles. After alcoholic fermentation (AF), most wines undergo malolactic fermentation (MLF) to improve their organoleptic properties and microbiological stability. Oenococcus oeni is mainly responsible for this crucial process where L-malic acid (MA) in wine converts to softer L-lactic acid. The bacterium is better adapted to the limiting conditions imposed by the wine matrix and performs MLF under regular winemaking conditions, especially in wines with a pH below 3.5. Traditionally, this process has been conducted by the natural microbiota present within the winery. However, the start, duration and qualitative impact of spontaneous MLF are unpredictable, which prompts winemakers to use pure starter cultures of selected bacteria to promote a more reliable, simple, fast and efficient fermentation. Yet, their use does not always ensure a problem-free fermentation. Spontaneous initiation of the process may prove very difficult or does not occur at all. Such difficulties arise from a combination of factors found in some wines upon the completion of AF (high ethanol concentration, low temperature and pH, low nutrient concentrations, presence of free and bound SO2). Alongside these well documented facts, research has also provided evidence that negative interactions between O. oeni and other biological entities such as yeasts may also impact MLF. Another insufficiently described, but highly significant factor inhibiting bacterial growth is connected to the presence of bacteriophages of O. oeni which are frequently associated to musts and wines. The purpose of this review is to summarize the current knowledge about the phage life cycles and possible impacts on the trajectory of the microbiota during winemaking.
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Affiliation(s)
- Amel Chaïb
- UMR 1366 OENOLOGIE, Univ. Bordeaux, INRAE, Bordeaux INP, Bordeaux Sciences Agro, Institut des Sciences de la Vigne et du Vin, Villenave d'Ornon, France
| | - Cécile Philippe
- UMR 1366 OENOLOGIE, Univ. Bordeaux, INRAE, Bordeaux INP, Bordeaux Sciences Agro, Institut des Sciences de la Vigne et du Vin, Villenave d'Ornon, France
| | - Féty Jaomanjaka
- UMR 1366 OENOLOGIE, Univ. Bordeaux, INRAE, Bordeaux INP, Bordeaux Sciences Agro, Institut des Sciences de la Vigne et du Vin, Villenave d'Ornon, France
| | - Yasma Barchi
- UMR 1366 OENOLOGIE, Univ. Bordeaux, INRAE, Bordeaux INP, Bordeaux Sciences Agro, Institut des Sciences de la Vigne et du Vin, Villenave d'Ornon, France
| | - Florencia Oviedo-Hernandez
- UMR 1366 OENOLOGIE, Univ. Bordeaux, INRAE, Bordeaux INP, Bordeaux Sciences Agro, Institut des Sciences de la Vigne et du Vin, Villenave d'Ornon, France
| | - Olivier Claisse
- UMR 1366 OENOLOGIE, Univ. Bordeaux, INRAE, Bordeaux INP, Bordeaux Sciences Agro, Institut des Sciences de la Vigne et du Vin, Villenave d'Ornon, France
| | - Claire Le Marrec
- UMR 1366 OENOLOGIE, Univ. Bordeaux, INRAE, Bordeaux INP, Bordeaux Sciences Agro, Institut des Sciences de la Vigne et du Vin, Villenave d'Ornon, France.
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The production of preconditioned freeze-dried Oenococcus oeni primes its metabolism to withstand environmental stresses encountered upon inoculation into wine. Int J Food Microbiol 2022; 369:109617. [DOI: 10.1016/j.ijfoodmicro.2022.109617] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 02/14/2022] [Accepted: 03/06/2022] [Indexed: 11/20/2022]
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9
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Cappello MS, Falco V, Curcio R, Mita G, Zapparoli G. Molecular and Physiological Properties of Indigenous Strains of Oenococcus oeni Selected from Nero di Troia Wine (Apulia, Italy). Microorganisms 2022; 10:microorganisms10040795. [PMID: 35456845 PMCID: PMC9031207 DOI: 10.3390/microorganisms10040795] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 04/06/2022] [Accepted: 04/07/2022] [Indexed: 01/27/2023] Open
Abstract
The characterization of Oenococcus oeni strains isolated from Nero di Troia wine (Apulia, Italy) sampled in two distinct production areas was carried out. The two indigenous populations, consisting of 95 and 97 isolates, displayed high genetic diversity when analyzed by amplified fragments length polymorphisms (AFLP). Based on the UPGMA dendrogram obtained by AFLP analysis, the two populations displayed similar genotypes that grouped in the same clusters with a high level of similarity (>95%). One genotype was found in only one of the two areas. Representative strains of each cluster were analyzed for their enzymatic activities (esterase, β-glucosidase, and protease), assayed in whole cells, and tested for their metabolic properties (consumption of L-malic acid, citric acid, acetaldehyde, and arginine) and growth parameters. Significant differences among strains, including the reference strain ATCC BAA-1163, were observed for all of these properties. Principal component analysis evidenced phenotypic differences among strains, and well separated some of them belonging to different genotypes. Strains exhibiting the best performances in most of these traits could be further investigated in order to select possible candidates as malolactic starters for Nero di Troia wine. This study provided insights on the population structure of O. oeni of a local winemaking area useful to the understanding of the regional diversity of this bacterium, an issue not yet completely resolved
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Affiliation(s)
- Maria Stella Cappello
- CNR, Institute of Science of Food Production (ISPA), Prov.le Lecce-Monteroni, 73100 Lecce, Italy; (V.F.); (G.M.)
- Correspondence: (M.S.C.); (R.C.)
| | - Vittorio Falco
- CNR, Institute of Science of Food Production (ISPA), Prov.le Lecce-Monteroni, 73100 Lecce, Italy; (V.F.); (G.M.)
| | - Rosita Curcio
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende, Italy
- Correspondence: (M.S.C.); (R.C.)
| | - Giovanni Mita
- CNR, Institute of Science of Food Production (ISPA), Prov.le Lecce-Monteroni, 73100 Lecce, Italy; (V.F.); (G.M.)
| | - Giacomo Zapparoli
- Department of Biotechnology, University of Verona, Strada le Grazie 15, 37134 Verona, Italy;
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Tofalo R, Battistelli N, Perpetuini G, Valbonetti L, Rossetti AP, Perla C, Zulli C, Arfelli G. Oenococcus oeni Lifestyle Modulates Wine Volatilome and Malolactic Fermentation Outcome. Front Microbiol 2021; 12:736789. [PMID: 34650537 PMCID: PMC8506162 DOI: 10.3389/fmicb.2021.736789] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 08/27/2021] [Indexed: 12/30/2022] Open
Abstract
In this study, nine Oenococcus oeni strains were tested for their ability to adhere to polystyrene using mMRS and wine as culture media. Moreover, planktonic and biofilm-detached cells were investigated for their influence on malic acid degradation kinetics and aroma compound production. Three strains were able to adhere on polystyrene plates in a strain-dependent way. In particular, MALOBACT-T1 and ISO359 strains mainly grew as planktonic cells, while the ISO360 strain was found prevalent in sessile state. The strain-dependent adhesion ability was confirmed by confocal laser scanning microscopy. Planktonic and biofilm detached cells showed a different metabolism. In fact, biofilm-detached cells had a better malic acid degradation kinetic and influenced the aroma composition of resulting wines, acting on the final concentration of esters, higher alcohols, and organic acids. Oenococcus oeni in biofilm lifestyle seems to be a suitable tool to improve malolactic fermentation outcome, and to contribute to wine aroma. The industrial-scale application of this strategy should be implemented to develop novel wine styles.
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Affiliation(s)
- Rosanna Tofalo
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Noemi Battistelli
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Giorgia Perpetuini
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Luca Valbonetti
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Alessio Pio Rossetti
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Carlo Perla
- Dalton Biotecnologie s.r.l., Spoltore, Italy
| | | | - Giuseppe Arfelli
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
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11
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Dimopoulou M, Dols-Lafargue M. Exopolysaccharides Producing Lactic Acid Bacteria in Wine and Other Fermented Beverages: For Better or for Worse? Foods 2021; 10:2204. [PMID: 34574312 PMCID: PMC8466591 DOI: 10.3390/foods10092204] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/12/2021] [Accepted: 09/15/2021] [Indexed: 11/21/2022] Open
Abstract
Lactic acid bacteria (LAB) from fermented beverages such as wine, cider and beer produce a wide range of exopolysaccharides (EPS) through multiple biosynthetic pathways. These extracellular polysaccharides constitute key elements for bacterial species adaptation to such anthropic processes. In the food industry, LAB polysaccharides have been widely studied for their rheological, functional and nutritional properties; however, these have been poorly studied in wine, beer and cider until recently. In this review, we have gathered the information available on these specific polysaccharide structure and, biosynthetic pathways, as well as the physiology of their production. The genes associated with EPS synthesis are also presented and compared. Finally, the possible role of EPS for bacterial survival and spread, as well as the risks or possible benefits for the winemaker and the wine lover, are discussed.
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Affiliation(s)
- Maria Dimopoulou
- Department of Wine, Vine and Beverage Sciences, School of Food Science, University of West Attica, Ag. Spyridonos str, Egaleo, 12243 Athens, Greece;
| | - Marguerite Dols-Lafargue
- Unité de Recherche Œnologie EA 4577, University of Bordeaux, ISVV, USC 1366 INRA, Bordeaux INP, F-33140 Villenave d’Ornon, France
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12
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Claisse O, Chaïb A, Jaomanjaka F, Philippe C, Barchi Y, Lucas PM, Le Marrec C. Distribution of Prophages in the Oenococcus oeni Species. Microorganisms 2021; 9:856. [PMID: 33923461 PMCID: PMC8074189 DOI: 10.3390/microorganisms9040856] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 04/10/2021] [Accepted: 04/14/2021] [Indexed: 12/16/2022] Open
Abstract
Oenococcus oeni is the most exploited lactic acid bacterium in the wine industry and drives the malolactic fermentation of wines. Although prophage-like sequences have been identified in the species, many are not characterized, and a global view of their integration and distribution amongst strains is currently lacking. In this work, we analyzed the complete genomes of 231 strains for the occurrence of prophages, and analyzed their size and positions of insertion. Our data show the limited variation in the number of prophages in O. oeni genomes, and that six sites of insertion within the bacterial genome are being used for site-specific recombination. Prophage diversity patterns varied significantly for different host lineages, and environmental niches. Overall, the findings highlight the pervasive presence of prophages in the O. oeni species, their role as a major source of within-species bacterial diversity and drivers of horizontal gene transfer. Our data also have implications for enhanced understanding of the prophage recombination events which occurred during evolution of O. oeni, as well as the potential of prophages in influencing the fitness of these bacteria in their distinct niches.
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Affiliation(s)
| | | | | | | | | | | | - Claire Le Marrec
- Unité de Recherche Œnologie, Bordeaux INP, University of Bordeaux, INRAE, ISVV, F-33882 Bordeaux, France; (O.C.); (A.C.); (F.J.); (C.P.); (Y.B.); (P.M.L.)
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13
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Biodiversity of Oenological Lactic Acid Bacteria: Species- and Strain-Dependent Plus/Minus Effects on Wine Quality and Safety. FERMENTATION 2021. [DOI: 10.3390/fermentation7010024] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Winemaking depends on several elaborate biochemical processes that see as protagonist either yeasts or lactic acid bacteria (LAB) of oenological interest. In particular, LAB have a fundamental role in determining the quality chemical and aromatic properties of wine. They are essential not only for malic acid conversion, but also for producing several desired by-products due to their important enzymatic activities that can release volatile aromatic compounds during malolactic fermentation (e.g., esters, carbonyl compounds, thiols, monoterpenes). In addition, LAB in oenology can act as bioprotectors and reduce the content of undesired compounds. On the other hand, LAB can affect wine consumers’ health, as they can produce harmful compounds such as biogenic amines and ethyl carbamate under certain conditions during fermentation. Several of these positive and negative properties are species- and strain-dependent characteristics. This review focuses on these aspects, summarising the current state of knowledge on LAB’s oenological diversity, and highlighting their influence on the final product’s quality and safety. All our reported information is of high interest in searching new candidate strains to design starter cultures, microbial resources for traditional/typical products, and green solutions in winemaking. Due to the continuous interest in LAB as oenological bioresources, we also underline the importance of inoculation timing. The considerable variability among LAB species/strains associated with spontaneous consortia and the continuous advances in the characterisation of new species/strains of interest for applications in the wine sector suggest that the exploitation of biodiversity belonging to this heterogeneous group of bacteria is still rising.
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14
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Virdis C, Sumby K, Bartowsky E, Jiranek V. Lactic Acid Bacteria in Wine: Technological Advances and Evaluation of Their Functional Role. Front Microbiol 2021; 11:612118. [PMID: 33519768 PMCID: PMC7843464 DOI: 10.3389/fmicb.2020.612118] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 11/23/2020] [Indexed: 12/21/2022] Open
Abstract
Currently, the main role of Lactic Acid Bacteria (LAB) in wine is to conduct the malolactic fermentation (MLF). This process can increase wine aroma and mouthfeel, improve microbial stability and reduce the acidity of wine. A growing number of studies support the appreciation that LAB can also significantly, positively and negatively, contribute to the sensorial profile of wine through many different enzymatic pathways. This is achieved either through the synthesis of compounds such as diacetyl and esters or by liberating bound aroma compounds such as glycoside-bound primary aromas and volatile thiols which are odorless in their bound form. LAB can also liberate hydroxycinnamic acids from their tartaric esters and have the potential to break down anthocyanin glucosides, thus impacting wine color. LAB can also produce enzymes with the potential to help in the winemaking process and contribute to stabilizing the final product. For example, LAB exhibit peptidolytic and proteolytic activity that could break down the proteins causing wine haze, potentially reducing the need for bentonite addition. Other potential contributions include pectinolytic activity, which could aid juice clarification and the ability to break down acetaldehyde, even when bound to SO2, reducing the need for SO2 additions during winemaking. Considering all these findings, this review summarizes the novel enzymatic activities of LAB that positively or negatively affect the quality of wine. Inoculation strategies, LAB improvement strategies, their potential to be used as targeted additions, and technological advances involving their use in wine are highlighted along with suggestions for future research.
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Affiliation(s)
- Carla Virdis
- Department of Wine Science, University of Adelaide, Urrbrae, SA, Australia
| | - Krista Sumby
- Department of Wine Science, University of Adelaide, Urrbrae, SA, Australia
- Australian Research Council Training Centre for Innovative Wine Production, Urrbrae, SA, Australia
| | - Eveline Bartowsky
- Australian Research Council Training Centre for Innovative Wine Production, Urrbrae, SA, Australia
- Lallemand Australia, Edwardstown, SA, Australia
| | - Vladimir Jiranek
- Department of Wine Science, University of Adelaide, Urrbrae, SA, Australia
- Australian Research Council Training Centre for Innovative Wine Production, Urrbrae, SA, Australia
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15
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Philippe C, Chaïb A, Jaomanjaka F, Claisse O, Lucas PM, Samot J, Cambillau C, Le Marrec C. Characterization of the First Virulent Phage Infecting Oenococcus oeni, the Queen of the Cellars. Front Microbiol 2021; 11:596541. [PMID: 33519734 PMCID: PMC7838156 DOI: 10.3389/fmicb.2020.596541] [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: 08/19/2020] [Accepted: 12/14/2020] [Indexed: 01/16/2023] Open
Abstract
There has been little exploration of how phages contribute to the diversity of the bacterial community associated with winemaking and may impact fermentations and product quality. Prophages of Oenococcus oeni, the most common species of lactic acid bacteria (LAB) associated with malolactic fermentation of wine, have been described, but no data is available regarding phages of O. oeni with true virulent lifestyles. The current study reports on the incidence and characterization of the first group of virulent oenophages named Vinitor, isolated from the enological environment. Vinitor phages are morphologically very similar to siphoviruses infecting other LAB. Although widespread during winemaking, they are more abundant in musts than temperate oenophages. We obtained the complete genomic sequences of phages Vinitor162 and Vinitor27, isolated from white and red wines, respectively. The assembled genomes shared 97.6% nucleotide identity and belong to the same species. Coupled with phylogenetic analysis, our study revealed that the genomes of Vinitor phages are architecturally mosaics and represent unique combinations of modules amongst LAB infecting-phages. Our data also provide some clues to possible evolutionary connections between Vinitor and (pro)phages associated to epiphytic and insect-related bacteria.
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Affiliation(s)
- Cécile Philippe
- University of Bordeaux, ISVV, EA4577 Œnologie, Villenave d’Ornon, France
| | - Amel Chaïb
- University of Bordeaux, ISVV, EA4577 Œnologie, Villenave d’Ornon, France
| | - Fety Jaomanjaka
- University of Bordeaux, ISVV, EA4577 Œnologie, Villenave d’Ornon, France
| | - Olivier Claisse
- University of Bordeaux, ISVV, EA4577 Œnologie, Villenave d’Ornon, France
- INRA, ISVV, USC 1366 Oenologie, Villenave d’Ornon, France
| | - Patrick M. Lucas
- University of Bordeaux, ISVV, EA4577 Œnologie, Villenave d’Ornon, France
| | - Johan Samot
- University of Bordeaux, ISVV, EA4577 Œnologie, Villenave d’Ornon, France
| | - Christian Cambillau
- Architecture et Fonction des Macromolécules Biologiques, Aix-Marseille Université, Campus de Luminy, Marseille, France
- Architecture et Fonction des Macromolécules Biologiques, Centre National de la Recherche Scientifique (CNRS), Marseille, France
| | - Claire Le Marrec
- University of Bordeaux, ISVV, EA4577 Œnologie, Villenave d’Ornon, France
- Bordeaux INP, ISVV, EA4577 Œnologie, Villenave d’Ornon, France
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16
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Balmaseda A, Rozès N, Leal MÁ, Bordons A, Reguant C. Impact of changes in wine composition produced by non-Saccharomyces on malolactic fermentation. Int J Food Microbiol 2020; 337:108954. [PMID: 33202298 DOI: 10.1016/j.ijfoodmicro.2020.108954] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 10/15/2020] [Accepted: 10/25/2020] [Indexed: 12/19/2022]
Abstract
Non-Saccharomyces yeasts have increasingly been used in vinification recently. This is particularly true of Torulaspora delbrueckii and Metschnikowia pulcherrima, which are inoculated before S. cerevisiae, to complete a sequential alcoholic fermentation. This paper aims to study the effects of these two non-Saccharomyces yeasts on malolactic fermentation (MLF) carried out by two strains of Oenococcus oeni, under cellar conditions. Oenological parameters, and volatile and phenolic compounds were analysed in wines. The wines were tasted, and the microorganisms identified. In general, non-Saccharomyces created more MLF friendly conditions, largely because of lower concentrations of SO2 and medium chain fatty acids. The most favourable results were observed in wines inoculated with T. delbrueckii, that seemed to promote the development of O. oeni and improve MLF performance.
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Affiliation(s)
- Aitor Balmaseda
- Universitat Rovira i Virgili, Departament de Bioquímica i Biotecnologia, Facultat d'Enologia, Grup de Biotecnologia Enològica, C/ Marcel·lí Domingo s/n, 43007 Tarragona, Catalonia, Spain
| | - Nicolás Rozès
- Universitat Rovira i Virgili, Departament de Bioquímica i Biotecnologia, Facultat d'Enologia, Grup de Biotecnologia Microbiana dels Aliments, C/ Marcel·lí Domingo s/n, 43007 Tarragona, Catalonia, Spain
| | - Miguel Ángel Leal
- Universitat Rovira i Virgili, Departament de Bioquímica i Biotecnologia, Facultat d'Enologia, Grup de Biotecnologia Enològica, C/ Marcel·lí Domingo s/n, 43007 Tarragona, Catalonia, Spain
| | - Albert Bordons
- Universitat Rovira i Virgili, Departament de Bioquímica i Biotecnologia, Facultat d'Enologia, Grup de Biotecnologia Enològica, C/ Marcel·lí Domingo s/n, 43007 Tarragona, Catalonia, Spain
| | - Cristina Reguant
- Universitat Rovira i Virgili, Departament de Bioquímica i Biotecnologia, Facultat d'Enologia, Grup de Biotecnologia Enològica, C/ Marcel·lí Domingo s/n, 43007 Tarragona, Catalonia, Spain.
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17
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Tufariello M, Capozzi V, Spano G, Cantele G, Venerito P, Mita G, Grieco F. Effect of Co-Inoculation of Candida zemplinina, Saccharomyces cerevisiae and Lactobacillus plantarum for the Industrial Production of Negroamaro Wine in Apulia (Southern Italy). Microorganisms 2020; 8:E726. [PMID: 32414096 PMCID: PMC7285497 DOI: 10.3390/microorganisms8050726] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 05/01/2020] [Accepted: 05/08/2020] [Indexed: 01/11/2023] Open
Abstract
The employment of multi-species starter cultures has growing importance in modern winemaking for improving the complexity and wine attributes. The assessment of compatibility for selected species/strains at the industrial-scale is crucial to assure the quality and the safety associated with fermentations. An aspect particularly relevant when the species belong to non-Saccharomyces, Saccharomyces spp. and malolactic bacteria, three categories with different biological characteristics and oenological significance. To the best of our knowledge, the present report is the first study regarding the utilization of a combined starter culture composed of three strains of non-Saccharomyces, Saccharomyces cerevisiae and Lactobacillus plantarum for production of wine at the industrial scale. More in-depth, this work investigated the oenological potential of the autochthonous characterized strains from the Apulian region (Southern Italy), Candida zemplinina (syn. Starmerella bacillaris) 35NC1, S. cerevisiae (NP103), and L. plantarum (LP44), in co-inoculation following a complete scale-up scheme. Microbial dynamics, fermentative profiles and production of volatile secondary compounds were assessed in lab-scale micro-vinification tests and then the performances of the mixed starter formulation were further evaluated by pilot-scale wine production. The above results were finally validated by performing an industrial-scale vinification on 100HL of Negroamaro cultivar grape must. The multi-starter formulation was able to rule the different stages of the fermentation processes effectively, and the different microbial combinations enhanced the organoleptic wine features to different extents. The findings indicated that the simultaneous inoculation of the three species affect the quality and quantity of several volatile compounds, confirming that the complexity of the wine can reflect the complexity of the starter cultures. Moreover, the results underlined that the same mixed culture could differently influence wine quality when tested at the lab-, pilot- and industrial-scale. Finally, we highlighted the significance of employment non-Saccharomyces and L. plantarum, together with S. cerevisiae, autochthonous strains in the design of custom-made starter culture formulation for typical regional wine production with pronounced unique quality.
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Affiliation(s)
- Maria Tufariello
- Institute of Sciences of Food Production, National Research Council, 73100 Lecce, Italy;
| | - Vittorio Capozzi
- Institute of Sciences of Food Production, National Research Council, c/o CS-DAT, Via Michele Protano, 71121 Foggia, Italy;
| | - Giuseppe Spano
- Department of the Sciences of Agriculture, Food and Environment, University of Foggia, 71121 Foggia, Italy;
| | | | - Pasquale Venerito
- Center for Research, Experimentation and Training in Agriculture “Basile Caramia”, 70010 Locorotondo, Italy;
| | - Giovanni Mita
- Institute of Sciences of Food Production, National Research Council, 73100 Lecce, Italy;
| | - Francesco Grieco
- Institute of Sciences of Food Production, National Research Council, 73100 Lecce, Italy;
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18
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Lytra G, Miot-Sertier C, Moine V, Coulon J, Barbe JC. Influence of must yeast-assimilable nitrogen content on fruity aroma variation during malolactic fermentation in red wine. Food Res Int 2020; 135:109294. [PMID: 32527485 DOI: 10.1016/j.foodres.2020.109294] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 03/26/2020] [Accepted: 05/03/2020] [Indexed: 02/01/2023]
Abstract
This study assessed the impact of must yeast-assimilable nitrogen (YAN) content and lactic acid bacteria (LAB) strains used for malolactic fermentation (MLF) on the formation of substituted esters, as well as the corresponding precursors (substituted acids), to investigate the modulation of fruity expression in red wines. In microvinification experiments, a Merlot must was fermented with an initial YAN content of 111 mg/L, or supplemented up to 165 and 220 mg/L. Two Oenococcus oeni LAB strains were used for MLF. Analytical methods were used to quantify substituted esters, as well as the corresponding acids, including, any enantiomeric forms. YAN supplementation of the must significantly increased concentrations of substituted esters of short- and branched-chain alkyl fatty acids produced during alcoholic fermentation (AF) (up to 67% in samples with the highest nitrogen content) and substituted esters of hydroxycarboxylic acids generated during MLF (up to 58% in samples with the highest nitrogen content). YAN supplementation in the must did not affect substituted acid formation during AF. After MLF, short- and branched-chain alkyl fatty acid levels increased in wines made from musts with the highest nitrogen content (up to 56% in samples with the highest nitrogen content), whereas concentrations of hydroxycarboxylic acids increased (up to 55%) independently of the initial YAN content, highlighting the important role of MLF. (2S)-2-hydroxy-4-methylpentanoic acid was only found in wines after malolactic fermentation, suggesting different pathways for each enantiomer and opening up new prospects for the study of bacterial metabolisms. Moreover, sensory profiles revealed a significant increase in black-berry- and jammy-fruit aromas during MLF and a strong positive correlation between these aromas and the production of substituted esters following must nitrogen supplementation and MLF. Aromatic reconstitutions revealed that variations in the concentrations of substituted esters after MLF impacted the fruity aroma of red wines.
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Affiliation(s)
- Georgia Lytra
- Univ. Bordeaux, Unité de recherche Œnologie, EA 4577, USC 1366 INRAE, ISVV, 33882 Villenave d'Ornon cedex, France
| | - Cécile Miot-Sertier
- Univ. Bordeaux, Unité de recherche Œnologie, EA 4577, USC 1366 INRAE, ISVV, 33882 Villenave d'Ornon cedex, France
| | | | - Joana Coulon
- Biolaffort, BP 17, F-33072 Bordeaux Cedex 15, France
| | - Jean-Christophe Barbe
- Univ. Bordeaux, Unité de recherche Œnologie, EA 4577, USC 1366 INRAE, ISVV, 33882 Villenave d'Ornon cedex, France.
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19
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Yu AO, Leveau JHJ, Marco ML. Abundance, diversity and plant-specific adaptations of plant-associated lactic acid bacteria. ENVIRONMENTAL MICROBIOLOGY REPORTS 2020; 12:16-29. [PMID: 31573142 DOI: 10.1111/1758-2229.12794] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 09/11/2019] [Accepted: 09/12/2019] [Indexed: 06/10/2023]
Abstract
Lactic acid bacteria (LAB) are essential for many fruit, vegetable and grain food and beverage fermentations. However, the numbers, diversity and plant-specific adaptions of LAB found on plant tissues prior to the start of those fermentations are not well understood. When measured, these bacteria have been recovered from the aerial surfaces of plants in a range from <10 CFU g-1 to over 108.5 CFU g-1 of plant tissue and in lower quantities from the soil and rhizosphere. Plant-associated LAB include well-known generalist taxa such as Lactobacillus plantarum and Leuconostoc mesenteroides, which are essential for numerous food and beverage fermentations. Other plant-associated LAB encompass specialist taxa such as Lactobacillus florum and Fructobacillus, many of which were discovered relatively recently and their significance on plants and in foods is not yet recognized. LAB recovered from plants possess the capacity to consume plant sugars, detoxify phenolic compounds and tolerate the numerous biotic and abiotic stresses common to plant surfaces. Although most generalist and some specialist LAB grow rapidly in food and beverages fermentations and can cause spoilage of fresh and fermented fruits and vegetables, the importance of living plants as habitats for these bacteria and LAB contributions to plant microbiomes remain to be shown.
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Affiliation(s)
- Annabelle O Yu
- Department of Food Science & Technology, University of California Davis, Davis, CA, USA
| | - Johan H J Leveau
- Department of Plant Pathology, University of California Davis, Davis, CA, USA
| | - Maria L Marco
- Department of Food Science & Technology, University of California Davis, Davis, CA, USA
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20
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Lysogeny in the Lactic Acid Bacterium Oenococcus oeni Is Responsible for Modified Colony Morphology on Red Grape Juice Agar. Appl Environ Microbiol 2019; 85:AEM.00997-19. [PMID: 31375489 DOI: 10.1128/aem.00997-19] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 07/24/2019] [Indexed: 11/20/2022] Open
Abstract
Oenococcus oeni is the lactic acid bacterium (LAB) that most commonly drives malolactic fermentation in wine. Although oenococcal prophages are highly prevalent, their implications on bacterial fitness have remained unexplored and more research is required in this field. An important step toward achieving this goal is the ability to produce isogenic pairs of strains that differ only by the lysogenic presence of a given prophage, allowing further comparisons of different phenotypic traits. A novel protocol for the rapid isolation of lysogens is presented. Bacteria were first picked from the center of turbid plaques produced by temperate oenophages on a sensitive nonlysogenic host. When streaked onto an agar medium containing red grape juice (RGJ), cells segregated into white and red colonies. PCR amplifications with phage-specific primers demonstrated that only lysogens underwent white-red morphotypic switching. The method proved successful for various oenophages irrespective of their genomic content and attachment site used for site-specific recombination in the bacterial chromosome. The color switch was also observed when a sensitive nonlysogenic strain was infected with an exogenously provided lytic phage, suggesting that intracolonial lysis triggers the change. Last, lysogens also produced red colonies on white grape juice agar supplemented with polyphenolic compounds. We posit that spontaneous prophage excision produces cell lysis events in lysogenic colonies growing on RGJ agar, which, in turn, foster interactions between lysed materials and polyphenolic compounds to yield colonies easily distinguishable by their red color. Furthermore, the technique was used successfully with other species of LAB.IMPORTANCE The presence of white and red colonies on red grape juice (RGJ) agar during enumeration of Oenococcus oeni in wine samples is frequently observed by stakeholders in the wine industry. Our study brings an explanation for this intriguing phenomenon and establishes a link between the white-red color switch and the lysogenic state of O. oeni It also provides a simple and inexpensive method to distinguish between lysogenic and nonlysogenic derivatives in O. oeni with a minimum of expended time and effort. Noteworthy, the protocol could be adapted to two other species of LAB, namely, Leuconostoc citreum and Lactobacillus plantarum It could be an effective tool to provide genetic, ecological, and functional insights into lysogeny and aid in improving biotechnological processes involving members of the lactic acid bacterium (LAB) family.
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21
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Berbegal C, Borruso L, Fragasso M, Tufariello M, Russo P, Brusetti L, Spano G, Capozzi V. A Metagenomic-Based Approach for the Characterization of Bacterial Diversity Associated with Spontaneous Malolactic Fermentations in Wine. Int J Mol Sci 2019; 20:ijms20163980. [PMID: 31443334 PMCID: PMC6721008 DOI: 10.3390/ijms20163980] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 08/13/2019] [Accepted: 08/13/2019] [Indexed: 01/13/2023] Open
Abstract
This study reports the first application of a next generation sequencing (NGS) analysis. The analysis was designed to monitor the effect of the management of microbial resources associated with alcoholic fermentation on spontaneous malolactic consortium. Together with the analysis of 16S rRNA genes from the metagenome, we monitored the principal parameters linked to MLF (e.g., malic and lactic acid concentration, pH). We encompass seven dissimilar concrete practices to manage microorganisms associated with alcoholic fermentation: Un-inoculated must (UM), pied-de-cuve (PdC), Saccharomyces cerevisiae (SC), S. cerevisiae and Torulaspora delbrueckii co-inoculated and sequentially inoculated, as well as S. cerevisiae and Metschnikowia pulcherrima co-inoculated and sequentially inoculated. Surprisingly, each experimental modes led to different taxonomic composition of the bacterial communities of the malolactic consortia, in terms of prokaryotic phyla and genera. Our findings indicated that, uncontrolled AF (UM, PdC) led to heterogeneous consortia associated with MLF (with a relevant presence of the genera Acetobacter and Gluconobacter), when compared with controlled AF (SC) (showing a clear dominance of the genus Oenococcus). Effectively, the SC trial malic acid was completely degraded in about two weeks after the end of AF, while, on the contrary, malic acid decarboxylation remained uncomplete after 7 weeks in the case of UM and PdC. In addition, for the first time, we demonstrated that both (i) the inoculation of different non-Saccharomyces (T. delbrueckii and M. pulcherrima) and, (ii) the inoculation time of the non-Saccharomyces with respect to S. cerevisiae resources (co-inoculated and sequentially inoculated) influence the composition of the connected MLF consortia, modulating MLF performance. Finally, we demonstrated the first findings of delayed and inhibited MLF when M. pulcherrima, and T. delbrueckii were inoculated, respectively. In addition, as a further control test, we also assessed the effect of the inoculation with Oenococcus oeni and Lactobacillus plantarum at the end of alcoholic fermentation, as MLF starter cultures. Our study suggests the potential interest in the application of NGS analysis, to monitor the effect of alcoholic fermentation on the spontaneous malolactic consortium, in relation to wine.
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Affiliation(s)
- Carmen Berbegal
- Department of Agriculture, Food and Environment Sciences, University of Foggia, Via Napoli 25, 71122 Foggia, Italy
- EnolabERI BioTecMed, Universitat de València, 46100 Valencia, Spain
| | - Luigimaria Borruso
- Faculty of Science and Technology, Free University of Bozen-Bolzano, 39100 Bozen-Bolzano, Italy
| | - Mariagiovanna Fragasso
- Department of Agriculture, Food and Environment Sciences, University of Foggia, Via Napoli 25, 71122 Foggia, Italy
| | - Maria Tufariello
- Istituto di Scienze delle Produzioni Alimentari, Consiglio Nazionale delle Ricerche, Unità Operativa di Supporto di Lecce, 73100 Lecce, Italy
| | - Pasquale Russo
- Department of Agriculture, Food and Environment Sciences, University of Foggia, Via Napoli 25, 71122 Foggia, Italy
| | - Lorenzo Brusetti
- Faculty of Science and Technology, Free University of Bozen-Bolzano, 39100 Bozen-Bolzano, Italy
| | - Giuseppe Spano
- Department of Agriculture, Food and Environment Sciences, University of Foggia, Via Napoli 25, 71122 Foggia, Italy
| | - Vittorio Capozzi
- Department of Agriculture, Food and Environment Sciences, University of Foggia, Via Napoli 25, 71122 Foggia, Italy.
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22
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Zhao H, Liu L, Peng S, Yuan L, Li H, Wang H. Heterologous Expression of Argininosuccinate Synthase From Oenococcus oeni Enhances the Acid Resistance of Lactobacillus plantarum. Front Microbiol 2019; 10:1393. [PMID: 31293541 PMCID: PMC6598401 DOI: 10.3389/fmicb.2019.01393] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 06/04/2019] [Indexed: 01/31/2023] Open
Abstract
Oenococcus oeni can survive well in wine (an acid-stress environment) and dominate malolactic fermentation (MLF). To demonstrate a possible role of argininosuccinate synthase gene (argG) in the acid tolerance response of O. oeni, a related argG gene was inserted into a plasmid pMG36e and heterologously expressed in Lactobacillus plantarum SL09, a wine isolate belonging to a species of relevant importance in MLF. The expression levels of the argG gene in L. plantarum were analyzed by RT-qPCR, argininosuccinate synthase (ASS) activity and cell properties (amino acids, pH, H+-ATPase activity, and ATP levels) were determined at pH 3.7 in comparison with that at pH 6.3. Results showed that the recombinant strain L. plantarum SL09 (pMG36eargG) exhibited stronger growth performance compared with the control strain (without argG gene), and the expression levels of hsp1, cfa, atp, the citrate and malate metabolic genes were apparently increased under acid stress. In addition, the recombinant strain exhibited 11.0-, 2.0-, 1.9-fold higher ASS activity, H+-ATPase activity and intracellular ATP level, compared with the corresponding values for control strain during acid-stresses condition, which may take responsible for the acid tolerance enhancement of the recombinant strain. This is the first work report on heterologous expression of argG gene, and the results presented in this study will be beneficial for the research on acid stress response of O. oeni.
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Affiliation(s)
- Hongyu Zhao
- College of Enology, Northwest A&F University, Yangling, China
| | - Longxiang Liu
- Shandong Engineering and Technology Research Center for Ecological Fragile Belt of Yellow River Delta, Binzhou, China
| | - Shuai Peng
- College of Enology, Northwest A&F University, Yangling, China
| | - Lin Yuan
- College of Enology, Northwest A&F University, Yangling, China
| | - Hua Li
- College of Enology, Northwest A&F University, Yangling, China.,Heyang Experimental and Demonstrational Stations for Grape, Weinan, China.,Shaanxi Engineering Research Center for Viti-Viniculture, Yangling, China
| | - Hua Wang
- College of Enology, Northwest A&F University, Yangling, China.,Heyang Experimental and Demonstrational Stations for Grape, Weinan, China.,Shaanxi Engineering Research Center for Viti-Viniculture, Yangling, China
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