Inhibitory effects of Trichoderma spp. immobilized to Charcoal-particles on the Wood Rot by Serpula lacrymans

Abstract

Inhibitory effects of charcoal particles immobilized Trichoderma spp. on wood degradation by a psychrophilic-house fungus, Serpula lacrymans were examined. Japanese white birch (Betula platyphylla var. japonica) blocks were covered with three kinds of the particles immobilized Trichoderma spp. (ANCT-05013, ANCT-05103 and NBRC 33016) and exposed to S. lacrymans (HFPR 0301 and HFPR 0502) at 20℃ for 12 weeks to measure mass losses. ANCT-05013 and ANCT-05103 showed superior inhibition effects on wood degradation compared to NBRC 33016. The mass losses were 0% in the particles immobilized ANCT-05013 and ANCT-05103, 9-10% in the ones immobilized NBRC 33016, and 11-18% in the absence of the particles (control). Furthermore, S. lacrymans mycelial growth (HFPR 0301 and HFPR 0502) did not occur at the charcoal surface mobilized ANCT-05013 and ANCT-05103. This study revealed that the charcoal particles mobilized ANCT-05013 and ANCT-05103 had superior inhibition performance to brown rot by S. lacrymans. The two strains of ANCT-05013 and ANCT-05103 were accepted as NBRC 113097 and NBRC 113098 in January 2018, respectively.