PMID- 30734124 OWN - NLM STAT- MEDLINE DCOM- 20190718 LR - 20190718 IS - 1432-0614 (Electronic) IS - 0175-7598 (Linking) VI - 103 IP - 7 DP - 2019 Apr TI - Biocontrol of Brettanomyces/Dekkera bruxellensis in alcoholic fermentations using saccharomycin-overproducing Saccharomyces cerevisiae strains. PG - 3073-3083 LID - 10.1007/s00253-019-09657-7 [doi] AB - Microbial contamination of alcoholic fermentation processes (e.g. winemaking and fuel-ethanol production) is a serious problem for the industry since it may render the product unacceptable and/or reduce its productivity, leading to large economic losses. Brettanomyces/Dekkera bruxellensis is one of the most dangerous microbial contaminant of ethanol industrial fermentations. In the case of wine, this yeast species can produce phenolic compounds that confer off-flavours to the final product. In fuel-ethanol fermentations, D. bruxellensis is a persistent contaminant that affects ethanol yields and productivities. We recently found that Saccharomyces cerevisiae secretes a biocide, which we named saccharomycin, composed of antimicrobial peptides (AMPs) derived from the glycolytic enzyme glyceraldehyde-3-phosphate dehydrogenase (GAPDH). Saccharomycin is active against several wine-related yeast species, namely D. bruxellensis. However, the levels of saccharomycin naturally secreted by S. cerevisiae during alcoholic fermentation are not sufficient to ensure the complete death of D. bruxellensis. Therefore, the aim of the present work was to construct genetically modified S. cerevisiae strains to overproduce these GAPDH-derived AMPs. The expression levels of the nucleotides sequences encoding the AMPs were evaluated in the modified S. cerevisiae strains by RT-qPCR, confirming the success of the recombinant approach. Furthermore, we confirmed by immunological tests that the modified S. cerevisiae strains secreted higher amounts of the AMPs by comparison with the non-modified strain, inducing total death of D. bruxellensis during alcoholic fermentations. FAU - Branco, Patricia AU - Branco P AD - Linking Landscape, Environment, Agriculture and Food (LEAF), Instituto Superior de Agronomia, University of Lisbon, Tapada da Ajuda, 1349-017, Lisbon, Portugal. AD - Unit of Bioenergy, Laboratorio Nacional de Energia e Geologia (LNEG), Estrada do Paco do Lumiar 22, 1649-038, Lisbon, Portugal. FAU - Sabir, Farzana AU - Sabir F AD - Linking Landscape, Environment, Agriculture and Food (LEAF), Instituto Superior de Agronomia, University of Lisbon, Tapada da Ajuda, 1349-017, Lisbon, Portugal. AD - Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, 1649-003, Lisbon, Portugal. FAU - Diniz, Mario AU - Diniz M AD - UCIBIO-REQUIMTE, Department of Chemistry, Faculdade de Ciencias e Tecnologia, Universidade NOVA de Lisboa, 2829-516, Caparica, Portugal. FAU - Carvalho, Luisa AU - Carvalho L AD - Linking Landscape, Environment, Agriculture and Food (LEAF), Instituto Superior de Agronomia, University of Lisbon, Tapada da Ajuda, 1349-017, Lisbon, Portugal. FAU - Albergaria, Helena AU - Albergaria H AUID- ORCID: 0000-0002-9062-9827 AD - Unit of Bioenergy, Laboratorio Nacional de Energia e Geologia (LNEG), Estrada do Paco do Lumiar 22, 1649-038, Lisbon, Portugal. helena.albergaria@lneg.pt. FAU - Prista, Catarina AU - Prista C AD - Linking Landscape, Environment, Agriculture and Food (LEAF), Instituto Superior de Agronomia, University of Lisbon, Tapada da Ajuda, 1349-017, Lisbon, Portugal. cprista@isa.ulisboa.pt. LA - eng GR - SFRH/ BD/ 89673/ 2012/Funda??o para a Ci?ncia e a Tecnologia (PT)/ GR - FCOMP-01-0124-FEDER-014055/Funda??o para a Ci?ncia e a Tecnologia/ GR - PTDC/BII-BIO/31761/2017/Funda??o para a Ci?ncia e a Tecnologia/ GR - UID/Multi/04378/2013/Funda??o para a Ci?ncia e a Tecnologia/ GR - UID/AGR/04129/2013/Funda??o para a Ci?ncia e a Tecnologia/ PT - Journal Article DEP - 20190208 PL - Germany TA - Appl Microbiol Biotechnol JT - Applied microbiology and biotechnology JID - 8406612 RN - 0 (Biological Control Agents) RN - 0 (Saccharomyces cerevisiae Proteins) RN - 3K9958V90M (Ethanol) RN - EC 1.2.1.- (Glyceraldehyde-3-Phosphate Dehydrogenases) SB - IM MH - *Biological Control Agents MH - *Brettanomyces MH - *Dekkera MH - Ethanol/metabolism MH - *Fermentation MH - *Food Microbiology MH - Glyceraldehyde-3-Phosphate Dehydrogenases/metabolism MH - Industrial Microbiology MH - Microorganisms, Genetically-Modified MH - Saccharomyces cerevisiae/*enzymology/genetics MH - Saccharomyces cerevisiae Proteins/metabolism MH - Wine/microbiology OTO - NOTNLM OT - Antimicrobial peptides, glyceraldehyde 3-phosphate dehydrogenase OT - Bioethanol OT - Fuel-ethanol OT - Genetically-modified yeasts OT - Microbial contamination OT - Preservatives OT - Wine EDAT- 2019/02/09 06:00 MHDA- 2019/07/19 06:00 CRDT- 2019/02/09 06:00 PHST- 2018/11/16 00:00 [received] PHST- 2019/01/21 00:00 [accepted] PHST- 2019/01/18 00:00 [revised] PHST- 2019/02/09 06:00 [pubmed] PHST- 2019/07/19 06:00 [medline] PHST- 2019/02/09 06:00 [entrez] AID - 10.1007/s00253-019-09657-7 [pii] AID - 10.1007/s00253-019-09657-7 [doi] PST - ppublish SO - Appl Microbiol Biotechnol. 2019 Apr;103(7):3073-3083. doi: 10.1007/s00253-019-09657-7. Epub 2019 Feb 8.