Fig. 1 Field symptoms of B. papyrifera stem rot A: The symptoms of middle period of disease; B: The symptoms of later period of disease; C: Basidiocarp that grow on the stems of diseased trees in the dry season; D: Basidiocarp that grow on the stems of diseased trees in the moist season; E: The basidiocarp and the muddy spore powder on the surface of the stems of diseased trees.

Fig. 2 Pathogenicity determination and basidocarpinduction A: Pathogens have colonized at the inoculation site; B: White rot appeared on the internal tissue; C and D: Basidocarps of Ganoderma that grows after young trees inoculated with pathogens after 2 months; E: CK; F: Isolated strains developed basidiocarps in bottled sawdust medium.

Fig. 3 Morphology of pathogen A: Colony morphology (front side); B: Basidiocarps growing under moist conditions; C: Basidiocarp growing under dry conditions (front side); D: Basidiocarp (back side); E: Basidiospores; F and G: Hyphae (① Bindinghyphae; ② Generative hyphae; ③ Skeletal hyphae).

Fig. 4 Phylogenetic trees based on rDNA-ITS, LSUand SSU sequences of strains GSJF001

Fig. 5 Colony diametet of GSJF001 under different treatment conditions Different lowercase letters represent significant difference (P<0.05), different uppercase letters represent extremely significant difference (P<0.01).