Fig. 2
Comparison of l-lysine production (a), cell growth (b), glucose consumption (c), by-products accumulation [organic acids (d) and amino acids (e)] of ppc or/and pyc overexpression strains in shake-flasks culture with CgXIIM minimal medium containing 40 g L−1 glucose. d-1, e-1 The data refers the left ordinate values, whereas the data in d-2 and e-2 refers the right ordinate values. Signal denotes: JL-6 (times, the black lines or bar), JL-65 (circle, the blue lines or bars), JL-66 (square, the light blue lines or bars), JL-67 (triangle, the green lines or bars), and JL-68 (diamond, the red lines or bars). The data represent mean values and standard deviations obtained from three independent cultivations