Fig. 1 Field symptoms A, B: Symptoms of field plants;C: Diseased tree xylem tissue white rot;D-F: Basidiocarps grow on the surface and the stem and stem base of diseased trees; G: The under surface of the basidiocarp turns blood red after injury.

Fig. 2 Pathogenicity test A:The leaves turn yellow and branches die after 4 months of inoculation; B:The pathogens have been colonized at the inoculation site, and the internal tissue is white rot; C: CK.

Fig. 3 Induced basidiocarp A, B：The induced basidiocarp in sawdust medium.

Fig. 4 Morphology of pathogen A: Pathogen’s colony morphology on PDA medium for 6 days; B: Young basidiocarp of pathogen grown on PDA medium for 90 days; C,D,E: Fresh basidiocarp; F: dried basidiocarp; G: Hyphae (①Skeletal hyphae; ②Bindinghyphae; ③Generative hyphae); H: Basidiospores.

Fig. 5 Polymeric analysis of strain HNDA005 and other Amauroderma strains based on SSU sequences

Fig. 6 Effect of different temperature on hyphae growth of A. rugosum Different small letters indicate significant difference at 0.05 level. Different capital letters indicate significant difference at 0.01 level.

Fig. 7 Effect of different light on mycelial growth of A. rugosum Different small letters indicate significant difference at 0.05 level. Different capital letters indicate significant difference at 0.01 level.

Fig. 8 Effect of different pH on mycelial growth of A. rugosum Different small letters indicate significant difference at 0.05 level. Different capital letters indicate significant difference at 0.01 level.