Bacterial wilt-resistant tomato rootstock suppresses migration of ralstonia solanacearum into soil

Ralstonia solanacearum , the causal agent of bacterial wilt of tomato, grows in infected plants and migrates from the roots into the soil. We investigated the effectiveness of bacterial wilt-resistant tomato rootstock in reducing the migration of R. solanacearum from susceptible scions into the soil...

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Bibliographic Details
Published in:Journal of general plant pathology : JGPP 2018-03, Vol.84 (2), p.118-123
Main Authors: Inoue, Yasuhiro, Kawaguchi, Akira, Nakaho, Kazuhiro
Format: Article
Language:English
Subjects:
Agriculture
Bacteria
Bacterial and Phytoplasma Diseases
Biomedical and Life Sciences
Cultivars
Flowers & plants
Grafting
Inoculation
Life Sciences
Microbiology
Plant diseases
Plant Pathology
Plant propagation
Plant resistance
Scions
Soil bacteria
Soil investigations
Soil microorganisms
Soils
Tomatoes
Uprooting
Wilt
Wilting
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Summary:Ralstonia solanacearum , the causal agent of bacterial wilt of tomato, grows in infected plants and migrates from the roots into the soil. We investigated the effectiveness of bacterial wilt-resistant tomato rootstock in reducing the migration of R. solanacearum from susceptible scions into the soil. Rootstock stems were either 3–5 cm tall (low-grafted, LG) or ≥ 10 cm tall (high-grafted, HG). After inoculation of scions of the susceptible cultivar (SC) with R. solanacearum below the first flower, there was no difference in disease progression among LG, HG, and ungrafted SC plants, and plants had wilted by 2 weeks. However, the rate of detection of R. solanacearum in the soil of wilted plants was reduced by grafting. The size of the R. solanacearum population in the soil of fully wilted plants increased in the order of HG 
ISSN:1345-2630
1610-739X
DOI:10.1007/s10327-018-0771-x