PHYTOTOXIC COMPOUNDS PRODUCED BY FUSARIUM EQUISETI
PHYTOTOXIC COMPOUNDS PRODUCED BY FUSARIUM EQUISETI
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DOI：
10.1093/jxb/12.1.1
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发表时间：
1961-01-01
影响因子：
6.9
通讯作者：
LOWE, D
中科院分区：
文献类型：
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作者：
BRIAN, PW;NORRIS, GLF;LOWE, D
几个木贼镰刀菌菌株的培养被发现具有高度的植物毒性。分离出几种植物毒性物质，其中最重要的是一种无色结晶化合物，diacetoxycirpenol，熔点161-2°，C19 H26 O 7。虽然它在许多方面具有很强的植物毒性，但在0.01-0.5 μg/ml时，它明显刺激水芹根的伸长。ml.这不是抗生长素效应。二乙酰氧基卷柏烯醇对真菌和细菌最多只有轻微的抑制作用，但对大鼠有很高的毒性。还描述了两种次要代谢产物，熔点分别为135-6°和185-8°。它们也具有高度的植物毒性，尽管它们的活性谱与diacetoxycirpenol的活性谱有些不同。它们对老鼠也有剧毒。这些物质的产生在被F寄生的植物的病害症状的病因学中可能并不重要。木贼，但可能是重要的中毒情况下，动物喂养的粮食感染镰刀菌。二乙酰氧基三环萜醇的水解产物三环萜三醇的植物毒性要小得多，但对大鼠的毒性相当。
Culture filtrates of several strains ofFusarium equiseti(Corda) Sacc. were found to be highly phytotoxic. Several phytotoxic substances were isolated; the most important of these was a colourless crystalline compound, diacetoxyscirpenol, m.p. 161-2°, C19H26O7. Though highly phytotoxic in many respects, it markedly stimulates elongation of cress roots at 0.01–0.5 μg./ml. This is not an anti-auxin effect. Diacetoxyscirpenol is at most only slightly inhibitory to fungi and bacteria, but is highly toxic to rats. Two minor metabolic products, m.p. 135-6° and 185-8° respectively, are also described. They, too, were highly phytotoxic, though their spectra of activity were somewhat different from that of diacetoxyscirpenol. They also were highly toxic to rats. Production of these substances is probably not important in the aetiology of disease symptoms in plants parasitized byF. equiseti, but may be significant in cases of toxicosis of animals fed with grain infected by Fusaria. Scirpentriol, a hydrolysis product of diacetoxyscirpenol, is much less phytotoxic but of equal toxicity to rats.