title: Quantitative expression analysis of mleP gene and two genes involved in the ABC transport system in Oenococcus oeni during rehydration.
abstract: Oenococcus oeni is recognized as the principal microorganism responsible for malolactic fermentation, and the control of its activity is of primary importance in winemaking. The aim of this study was to quantify the levels of expression of the malate transporter gene (mleP) and of two genes putatively involved in the ATP-binding cassette transport system (oeoe_1651, oeoe_0550) to better understand the physiological response of bacteria during rehydration. These genes coding for transporters were studied in different rehydration media. Initially, three different statistical algorithms were used to identify suitable reference genes to be used for the normalization of expression data in O. oeni during rehydration, and to this purpose, the best genes found were ddl and gyrB. The results showed that the genes for transporters of malate and sugar (mleP, oeoe_1651) were activated immediately after a few minutes of rehydration, when specific medium compositions were used.
authors.affiliation: CRA-Centro di Ricerca per l'Enologia, Via P. Micca 35, 14100, Asti, Italy.
authors.forename: Antonella
authors.initials: A
authors.lastname: Costantini
authors.forename: Enrico
authors.initials: E
authors.lastname: Vaudano
authors.forename: Kalliopi
authors.initials: K
authors.lastname: Rantsiou
authors.forename: Luca
authors.initials: L
authors.lastname: Cocolin
authors.forename: Emilia
authors.initials: E
authors.lastname: Garcia-Moruno
mesh_terms: D018528:ATP-Binding Cassette Transporters / Q000235:genetics* / Q000378:metabolism; D001426:Bacterial Proteins / Q000235:genetics* / Q000378:metabolism; D001692:Biological Transport; D015964:Gene Expression Regulation, Bacterial; D056585:Oenococcus / Q000235:genetics / Q000378:metabolism*; D014867:Water / Q000378:metabolism*
chemical_list: D018528:ATP-Binding Cassette Transporters; D001426:Bacterial Proteins; D014867:Water