Figure 2.

TCVA with lichen-associated bacterial isolates and Botrytis cinerea. Mycelium growth and sporulation was compared to untreated controls (A) after 4 days of co-incubation. Inhibition of sporulation was recorded for wells where discoloring of the mycelium was not observable (B). Inhibition of mycelial growth was recorded for wells with 50% or less mycelium proliferation (C) compared to negative controls. TCVA with HCN indicator (D) based on copper(II) ethyloacetoacetate and 4,4'-methylenebis(N,N-dimethylaniline). The second row shows positive reactions where bacterial isolates from counterpart wells secreted HCN into the headspace which led to the color change of indicator strips.