作者:Y. Kono、J.M. Gardner、Y. Suzuki、S. Takeuchi
DOI:10.1016/0031-9422(85)80016-9
日期:1985.11
Abstract Five host-specific pathotoxins, ACRL toxins II, III, III′, IV and IV′, were isolated from the culture broth of Alternaria citri , the fungus causing brown spot disease of rough lemon. These toxins are related structurally to the major ACRL toxin, toxin I, and to its derivative compound A. Chemical and spectral studies indicated that the ACRL minor toxins were a group of analogous compounds
摘要 从柑橘链格孢(Alternaria citri)的培养液中分离出5种宿主特异性病原体ACRL毒素II、III、III'、IV和IV',该真菌是引起粗柠檬褐斑病的真菌。这些毒素在结构上与主要 ACRL 毒素、毒素 I 及其衍生化合物 A 相关。化学和光谱研究表明,ACRL 次要毒素是一组不同链长的类似化合物,它们都具有 α-吡喃酮基团,与毒素 I 中的二氢-α-吡喃酮基团相反。毒素 II 显示出非常低的生物活性(ED 50 大于 10 μg/ml),而其他次要毒素的活性略高,范围从 1 到 10 μg/ml . ACRL 毒素 I 中的二氢吡喃酮组与高生物活性(ED 50 = 18-30 ng/ml)相关。