Figure 2.

Deinoxanthin production by the D. radiodurans strain DX2 under different culture conditions. (A) Transcription profiles of the genes groE, dxs, and crtB based on the growth temperature. The strain DX2 cultured at 30 °C was used as a control to normalize gene expression. Each sample was taken at 36 h for qRT-PCR analysis. (B) Deinoxanthin production under different growth temperatures. (C) Deinoxanthin production using different carbon sources (10 g/L). (D) Shake flask batch culture in TY medium containing 10 g/L sucrose under 72 h of incubation. All experiments were performed in triplicate, and the error bars represent the standard deviation.