Pathogenicity of Plant and Animal Isolates of Geotrichum Candidum in the Turtle

SUMMARY

Arthrospore suspensions of seven plant and animal isolates of Geotrichum candidum Link were injected separately into two species of turtles. G. candidum was recovered after 2-week incubation at 31 C from 10 of 12 animal organs assayed for the fungus. Histological studies showed all fungus isolates penetrated turtle tissues, grew and produced secondary arthrospores. The seven isolates maintained their pathogenicity to orange, lemon, and tomato after passage through turtle. These results help establish the reciprocal pathogenicity of plant and animal isolates of G. candidum for plant and animal tissues. G. candidum may be considered a biopathogen.