Figure 4From: Inactivation of uptake hydrogenase leads to enhanced and sustained hydrogen production with high nitrogenase activity under high light exposure in the cyanobacterium Anabaena siamensis TISTR 8012Effect of HupS inactivation on genes transcription and hydrogen production. Comparison of transcription levels of hetR and ntcA genes (A) and hydrogen production (B) between wild type and ∆hupS strains of Anabaena siamensis TISTR 8012 when grown in BG110 medium for various times at 40 μEm-2s-1. Hydrogen production rate was determined under continuous illumination of 40 μEm-2s-1 and anaerobic condition for 12 h. Means ± S.D. (n=3).Back to article page