31.ドクダミが生産する根寄生植物発芽刺激物質(口頭発表)

概要

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Strigolactones are the allelochemicals which act as host recognition signals for both root parasitic plants and arbuscular mycorrhizal fungi in the rhizosphere. Additionally, they regulate shoot branching as a novel class of plant hormones. In this study, germination stimulants produced by dokudami (Houttuynia cordata) were searched. Root exudates of dokudami showed germination stimulating activity against Orobanche minor, and so far five known strigolactones (strigol, sorgomol, orobanchyl acetate, fabacyl acetate, and 5-deoxystrigol) were identified by LC-MS/MS analysis. Further purification and structural elucidation of germination stimulants are now in progress.
2010-10-01