Antifungal Activity in Orange Tissue infected with Aspergillus niger

Abstract

ORANGE fruits that had been wounded and inoculated at fixed points with conidia of Aspergillus niger became infected with Penicillium digitatum, and it was observed that growth and sporulation of the latter were halted some distance from the regions of the fruit colonized by A. niger. Cylindrical portions of the pulp from regions supporting the A. niger growth placed on plates of potato–dextrose agar seeded with the spores of various fungi inhibited the growth of several, but no such inhibition was obtained with pulp from healthy fruits (Table 1).