オリザレキシンD (3,7-ジヒドロキシ-(+)-サンダラコピマラジエン), いもち病罹病イネ葉から単離した新規フィトアレキシン

関戸 治知; 遠藤 利治; 須賀 立夫; 児玉 治; 赤塚 尹巳; 河野 芳樹; 竹内 節男

doi:10.1584/jpestics.11.369

Oryzalexin D (3, 7-Dihydroxy-(+)-sandaracopimaradiene), a New Phytoalexin Isolated from Blast-infected Rice Leaves

Haruchika SEKIDO, Toshiharu ENDO, Ritsuo SUGA, Osamu KODAMA, Tadami AKATSUKA, Yoshiki KONO, Setsuo TAKEUCHI

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JOURNAL FREE ACCESS

1986 Volume 11 Issue 3 Pages 369-372

DOI https://doi.org/10.1584/jpestics.11.369

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Abstract

A new phytoalexin, oryzalexin D, was isolated as a group of oryzalexins from blastinfected rice (Oryza sativa) leaves. The structure of oryzalexin D was confirmed as 3, 7-dihydroxy-(+)-sandaracopimaradiene by UV, MS, ¹H-NMR and optical rotation. Oryzalexin D significantly inhibited spore germination of Pyricularia oryzae at 100ppm.

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