title: Effect of Oxygen and Redox Potential on Glucose Fermentation in Thermotoga maritima under Controlled Physicochemical Conditions.
abstract: Batch cultures of Thermotoga maritima were performed in a bioreactor equipped with instruments adapted for experiments performed at 80°C to mimic the fluctuating oxidative conditions in the hot ecosystems it inhabits. When grown anaerobically on glucose, T. maritima was shown to significantly decrease the redox potential (Eh) of the culture medium down to about -480 mV, as long as glucose was available. Addition of oxygen into T. maritima cultures during the stationary growth phase led to a drastic reduction in glucose consumption rate. However, although oxygen was toxic, our experiment unambiguously proved that T. maritima was able to consume it during a 12-hour exposure period. Furthermore, a shift in glucose metabolism towards lactate production was observed under oxidative conditions.
authors: UMR D180, IRD, ESIL, Universités de Provence et de la Méditerranée, 163 Avenue de Luminy, Case 925, 13288 Marseille Cedex 09, France.
authors: Raja
authors: R
authors: Lakhal
authors: Richard
authors: R
authors: Auria
authors: Sylvain
authors: S
authors: Davidson
authors: Bernard
authors: B
authors: Ollivier
authors: Alain
authors: A
authors: Dolla
authors: Moktar
authors: M
authors: Hamdi
authors: Yannick
authors: Y
authors: Combet-Blanc