Inhibition of the wax ester fermentation in anoxia.

The wax ester accumulation was almost completely abolished under anoxic-light conditions, as shown by the levels of C28 (14:0–14:0), which represents wax esters. The light-grown cells were subjected to anoxic and hypoxic conditions under both light and dark conditions. Hypoxia and anoxia were induced by stopping the culture agitation and N₂ aeration (10 min), respectively. The results under light-anoxic conditions are magnified in the inset. Error bars indicate standard deviation from triplicate cultures.