Light stimulation of growth of H. jecorina on selected carbon sources, and the impact of ENVOY. Biomass formation of wild-type strain QM9414 (open circles) or env1PAS- (full diamonds) has been analyzed by the BIOLOG microplate assay. Biomass equivalents (OD750) after 72 hrs of growth are given. This time was chosen because then both strains were still in the phase of active growth on all carbon sources tested. The y-axes shows values obtained under constant light of 1800 lux, whereas the x-axes shows those obtained in constant darkness. Consequently, carbon sources on which no difference between growth in light or darkness occurs lie on the border between the shaded area (indicating light stimulation) and the open area (light inhibition). The two lines indicate the mean values for all carbon sources. All experiments were done in triplicates, standard deviation is indicated by bars.