| Budget Amount *help |
¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Fiscal Year 2019: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2018: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2017: ¥11,960,000 (Direct Cost: ¥9,200,000、Indirect Cost: ¥2,760,000)
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| Outline of Final Research Achievements |
A chemoattractant of Ralstonia solanacearum isolated from the activated charcoal-adsorbed fraction of tomato root exudates was identified as ethyl β-D-glucopyranoside by instrumental analyses and comparison with synthetic preparations. Ethyl β-D-glucopyranoside showed unambiguous activity at above 1 μmol/disc. Its stereoisomers and D-glucose were inactive.
The effect of secondary metabolites and plant hormones produced by tomato on the chemotaxis of R. solanacearum was studied. Several hydroxylated aromatic carboxylic acids and a plant hormone, jasmonic acid, showed chemoattractant activity. Salicylic acid showed both chemoattractant and repellent activity depending on the concentration.
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