Fig. 6From: Deciphering the crucial roles of transcriptional regulator GadR on gamma-aminobutyric acid production and acid resistance in Lactobacillus brevisExpression levels of gadR in strain 367 and strain D17 cultured in GYP broth with pH control. The pH was controlled at 5.0 by addition of H2SO4 from the beginning of inoculationBack to article page