ダイズシストセンチュウの孵化促進物質, グリシノエクレピンAの単離研究をふりかえって

概要

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Some cyst-forming nematodes, such as potato cyst nematode (Globodera rostochiensis) and soybean cyst nematode (Heterodera glycines), are known as serious pests in agriculture. The eggs in these cysts remain dormant until hatching is stimulated by root exudates from host plants. Since the first discovery by Baunacke (1922) of this phenomenon for the potato cyst nematode, the isolation of the stimulus has been the object of considerable research. However, its extremely low concentration and relative instability have prevented its isolation. In this article, we describe how we have isolated the first hatching stimulus, glycinoeclepin A, from the dried roots of kidney bean (Phaseolus vulgaris), one of the host plants of the nematode. This substance is active at the concentration of 10-11-12g/ml in vitro against the soybean cyst nematode.