Fig. 1.

Photoconidiation of the WT and ∆blu7 strains after a pulse of blue light. a Induction of conidiation ring in WT and ∆blu7 mutant strains in response to increasing blue light fluence, as indicated. b Conidia production of the WT (squares) and the ∆blu7 (triangles) mutant at different blue light fluence. The inset is a zoom view of the induction of conidiation at fluences lower than 200 μmolm⁻². The strains were cultivated during 36 h in the dark, then exposed to a pulse of blue light of 0, 50, 80, 100, 250, 500, 1200, 2400, 4800, 9600 and 11000 μmolm⁻². c Semiquantitative RT-PCR of the blu7, env1 and sah1 genes after a pulse of blue light in the WT and the ∆blu7 mutant; gpd was used as a control. Replicates of three independent assays were used to evaluate conidia production by the mutant and WT strains. A t-test was applied to data with significant differences set at P < 0.05. A logarithmic base 10 tendency line was obtained for the data of the WT (blue line) and ∆blu7 mutant (green line)