Biological control of sapwood-inhabiting fungi by living bacterial cells of Streptomyces rimosus as a bioprotectant
S C Croan, T L Highley
The objective of this study is to evaluate the efficacy of antifungal activity of living bacterial cells for the protection of wood against sapwood-inhabiting fungi. The following sapwood-inhabiting fungi were selected: sapstain --Ceratocystis coerulescens, Ceratocystis minor, Ceratocystis pilifera, and Aureobasidum pullulans; mold fungi --Aspergillus niger, Penicillium spp, and Trichoderma spp. Living bacteria cells as a bioprotectant were studied in the laboratory using Southern pine and sweetgum block tests, and in field exposure trials with green pine log sections. Living bacterial cells inhibited spore germination, and therefore discoloration in laboratory wood block tests and in pine log sections exposed in field tests.