FIG. 5.

Effects of NaCl concentration on the expression of genes involved in Ysa TTS. Levels of β-galactosidase expression were measured for selected strains cultivated at 26°C in L medium containing various concentrations of NaCl as indicated below each panel. (A) GY4641 (ysaE-lacZYA); (B) GY4668 (orf6 orf7-lacZYA); (C) GY4664 (ysaU-lacZYA); (D) GY4613 (rcsB-lacZYA); (E) GY4894 (ysrRS-lacZYA); (F) GY5019 (sycB-lacZYA). β-Galactosidase expression was determined when cultures reached the early to mid log phase of growth. The results represent the means ± standard deviations from at least two independent experiments performed in duplicate.