2013 Fiscal Year Final Research Report
Detection, identification and mechanism of defense-related molecule for plant parasitic nematodes.
| Project/Area Number |
23380029
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Plant pathology
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| Research Institution | National Agriculture and Food Research Organization |
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Principal Investigator |
MIZUKUBO Takayuki 独立行政法人農業・食品産業技術総合研究機構, 中央農業総合研究センター病害虫研究領域, 上席研究員 (30370513)
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| Co-Investigator(Kenkyū-buntansha) |
SEO Shigemi 独立行政法人農業生物資源研究所, 植物・微生物間相互作用研究ユニット, 主任研究員 (80414910)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | ジャスモン酸 / 線虫侵入抑制節物質 / ネコブセンチュウ / トマト / スクラレオール / シロイヌナズナ / ニグリン / エチレン |
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| Research Abstract |
We focused on sclareol, a natural labdane-type diterpene known as the antimicrobial and defense-related molecule, and investigated whether and how sclareol application on plant body inhibits RKN infection to tomato and Arabidopsis roots. Plants that received sclareol application suppressed RKN infection, except for the ethylene (ET) insensitive mutant ein2-1.
Exogenously applied sclareol enhanced EIN2-dependent pathway and induced expression of lignin biosynthetic genes in roots of the plant. Accumulation of lignin in the roots which was caused by the activation of phenylpropanoid pathway resulted in suppression of invasion of RKN. Sclareol-induced RKN resistance was compromised in the Arabidopsis mutant deficient in a lignin biosynthetic gene, suggesting that lignin is involved in the sclareol-induced resistance against RKN.
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Research Products
(15 results)
