6533b831fe1ef96bd1298cba
RESEARCH PRODUCT
Stress Responses of Oenococcus oeni
Jean Guzzosubject
Winechemistry.chemical_compoundRegulonLactic acid bacteriumchemistrybiologyActive cellMalolactic fermentationCyclopropane fatty acidbiology.organism_classificationGeneOenococcus oeniCell biologydescription
Oenococcus oeni is an alcohol-tolerant, acidophilic lactic acid bacterium responsible for malolactic fermention in wine. The stress responses of O. oeni have been studied at both the molecular and physiological levels. Genes encoding stress proteins mainly belong to the CtsR regulon. Other regulation mechanisms seem to coexist in O. oeni and may correspond to posttranscriptional regulation. Maintenance of the cell membrane integrity under stress conditions seems to be a prerequisite for survival in wine. The active cell response to protect membrane function under stress conditions requires changes in fatty acid composition and involves stress proteins. Various solute transporters and energy transduction systems contribute to the survival of O. oeni cells by regulating the change of internal and external pH. Finally, knowledge of the genome sequence of two O. oeni strains provides essential data, which will be discussed in this chapter.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-01-01 |