Ecology of Crown Gall Disease and Population of Agrobacterium spp. in Vineyard Soils

Choi, Jae Eul; Kang, Sung Su; Park, Sang Hun; Park, Mun Kyu; Park, Tae Jin; Kang, Hee Wan

Research in Plant Disease 2008;14(2):90-94.
Published online August 30, 2008.

포도나무 뿌리혹병 발생생태 및 포도 재배포장의 Agrobacterium 속의 밀도 조사

최재을, 강성수, 박상헌, 박문규, 박태진, 강희완

Ecology of Crown Gall Disease and Population of Agrobacterium spp. in Vineyard Soils

Jae Eul Choi, Sung Su Kang, Sang Hun Park, Mun Kyu Park, Tae Jin Park, Hee Wan Kang

Abstract

To investigate the severity of crown gall disease on grapevine, the ratio of healthy vs. galled grapevines and the presence of the pathogen of the disease in soil were measured in Korean vineyards. In field and greenhouse cultivations, the crown gall incidence of the cv. Kyoho grapevines was 0.4~97.9% and 1.4~3.8% and those of cv. Campbell Early was 1.2~2.1% and 0~1.8%, respectively. The higher populations of Agrobacterium spp. were isolated from soils of grapeveins with crown gall than from soils of noninfected vineyards. Based on the colony shapes and growth on plates, 480 isolates of Agrobacterium spp. from 21 soil samples were collected. Only 13 isolates out of 480 developed the gall on inoculated grapevines.

Key Words: Agrobacterium spp., Crown gall, Grapevine, Greenhouse cultivation