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Bio-Organic Chemical Studies on Resistance of Solanacea Plant Stock against Soilborn Disease

茄科植物种群抗土传病害的生物有机化学研究

基本信息

批准号：
60470133
负责人：
SAKAMURA Sadao
金额：
$ 3.2万
依托单位：
Hokkaido University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1985
资助国家：
日本
起止时间：
1985 至 1987
项目状态：
已结题

项目摘要

1. Eggplant stock "Taibyo VF"Ether ethyl acetate soluble fractions showed antifungal activities against the pathogens of soilborn diseases. They had a higher activity than those from a eggplant "Senryo". This result suggestes that some fungitoxic compounds partly participate in resistance. Five phenolic compounds and three sesquiterpenes were isolated as fungitoxic compounds and their chemical structures were determined. One of them is solavetivone and the content is rather large. These data show that solavetivone plays an important part in resistance of Taibyo VF.2. Tomato stock "Taibyo shinko No. 1"Ether and ethyl acetate soluble fractions also showed stronger activities than those of tomato "Kyoryoku beiju". Fungitoxic compounds from ether soluble fraction were six steroidal alkaloids including four new compounds, four C18-hydroxy fatty acids and seven phenolic ompounds. Since basic compounds in ether soluble fraction showed the highst fungitoxic activity, the steroidal alkalcids are suggested to be key compounds for resistance.

1.茄子砧木“太保VF”乙酸乙酯提取物对土传病害病原菌具有一定的抗真菌活性。它们的活性比茄子“Senryo”的活性高。这一结果表明，某些真菌毒素部分参与了抗性的产生。分离得到5个酚类化合物和3个倍半萜类化合物，鉴定了它们的化学结构。其中之一是索拉维酮，含量较大。这些数据表明，在太白VF2的抗性中，Solaventivone起着重要作用。番茄砧木“太保新科1号”的乙酸乙酯和乙酸乙酯可溶部分也表现出比番茄“菊芋北居”更强的活性。乙醚提取物中含有6个甾体生物碱，其中4个为新化合物，4个为C18-羟基脂肪酸，7个为酚类化合物。由于乙醚可溶部分中的碱性化合物表现出较高的杀菌活性，因此，甾体类碱类化合物被认为是抗性的关键化合物。