Agrobacterium larrymoorei와 A. tumefaciens에 의한 벤자민고무나무 뿌리혹병

다국어 초록 (Multilingual Abstract)

Crown gall on lower stem of weeping fig (Ficus benjamina Roxb.) was first observed at Daejon in 2003.
Tumors were about 15 cm in size and semi-round with rough surface texture of dark brown color. Two virulent
isolates among ten bacteria isolated from the tumor tissues were characterized. Their colonies were convex,
glistening, circular with an entire edge, and white or tannish cream in color on potato dextrose agar
supplemented with 0.5% CaCO3. They were rod shape with peritrichous flagellae, gram-negative, aerobic
growth, oxidase-positive, and grew on D1M agar. The isolates were identified as Agrobacterium larrymoorei
and A. tumefaciens based on biochemical and physiological characteristics, fatty acid profiles and substrate
utilization patterns. Seedlings of some host plants excepting grapevine produced typical galls two to three
weeks after inoculation with cell suspensions of the virulent strains. This is the first report on crown gall of
weeping fig in Korea.

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