Aphanomyces euteiches zoospore attractant isolated from pea root ; Prunetin.

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  • YOKOSAWA Ryozo
    Department of General Education, Higashi Nippon Gakuen University
  • KUNINAGA Shiro
    Department of General Education, Higashi Nippon Gakuen University
  • SEKIZAKI Haruo
    Faculty of Pharmaceutical Science, Higashi Nippon Gakuen University

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Other Title
  • エンドウから単離される<i>Aphanomyces euteiches</i>遊走子の誘引物質;プルネチン
  • エンドウから単離されるAphanomyces euteiches遊走子の誘引物質;プルネチン〔英文〕
  • エンドウ カラ タンハナサレル Aphanomyces euteiches ユ

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Abstract

Zoospores of A. euteiches were attracted to the site immediately behind the root caps of pea roots. The isolation and structural determination of attractant in pea root and its exudates were performed. Isolated attractant was 5, 4'-dihydroxy-7-methoxy-isoflavone, prunetin. This compound was detected both root and its exudates, and strongly attracted A. euteiches zoospore at the concentration 5×10-7 mol. Prunetin had no attractive effect on A. cochlioides zoospore at the concentrations 10-5-10-9 mol.

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