Fig. 1.

BbSmr1 protein structure and its negative regulation of oosporein production. (A) Schematic of BbSmr1 protein features indicating the presence of a nuclear localization signal (red diamond), zinc finger motifs (double arrows), and putative phosphorylation sites as indicated. (B) BbSmr1 negatively regulates oosporein production in B. bassiana. Shown are images of culture supernatants derived from B. bassiana WT strain (WT), Bbsmr1-targeted gene knockout (ΔBbsmr1), and complementation mutant (CM), as detailed in Materials and Methods.