measuring the advance of the color-change front in the CAS-blue agar, starting from the borderline
between the two media. The CAS-agar color changed from blue to orange, purple, or dark purplis-
h-red (magenta). In these tests the culture media used for growing the fungi and the bacteria were
2% MEA and nutrient agar, respectively. Each strain was inoculated in duplicate in three sets of
experiments. The control plates of CAS-agar uninoculated were incubated under the same conditions
as described above and no color change in the CAS-blue agar was observed, even after long
incubation periods (15–20 days).