Subsequently, in soil assays, the P. luminescens metabolite treatment suppressed A. tabescens; the viability of the mycelial fragments as measured by CFUs on selective media was reduced relative to the controls (F = 7.22; df = 6, 48; P < 0.0001) (Fig. 4).
In contrast, the X. bovienii metabolite and bacterial broth treatments did not exhibit a suppressive effect on mycelial fragments of A. tabescens in soil (Fig. 4).