CONTROL OF RUST DISEASES BY DITERPENES FROM NICOTIANA-GLUTINOSA
CONTROL OF RUST DISEASES BY DITERPENES FROM NICOTIANA-GLUTINOSA
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DOI：
10.1038/255328a0
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发表时间：
1975-01-01
期刊：
影响因子：
64.8
通讯作者：
WAIN, RL
中科院分区：
文献类型：
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作者：
BAILEY, JA;CARTER, GA;WAIN, RL
二萜香紫苏醇和 13-表香香紫苏醇（香紫苏醇）的差向异构混合物（图 1）已显示占 10%； Nicotiana glutinosa1 叶片表面渗出物的分析。对其对真菌生长的影响的研究表明，它既不抑制体外几种兼性病原体的孢子萌发，也不减少液体培养基中产生的菌丝体的重量。然而，某些真菌物种（例如芸苔链格孢菌）的菌丝发育明显受到该化合物的影响。在香紫苏醇存在的情况下，会诱导分支增加，从而导致琼脂上生长的菌落直径大幅减小。这种形态效应可以解释为自然真菌生长过程调节改变的结果。该报告描述了香紫苏醇对体外锈菌萌发和生长的影响，以及它可以为植物提供针对这些真菌引起的疾病的保护。
AN epimeric mixture of the diterpenes sclareol and 13-epi-sclareol (sclareol) (Fig. 1) has been shown to constitute 10%; of the surface exudate on leaves ofNicotiana glutinosa1. Investigations into its effect on fungal growth showed that it neither inhibits the spore germination of several species of facultative pathogensin vitronor reduces the weight of mycelium produced in liquid medium. The development of hyphae of certain species of fungi, for exampleAlternaria brassicicola, is, however, markedly affected by this compound. In the presence of sclareol, increased branching is induced which leads to a substantial reduction in the diameter of colonies growing on agar1. Such morphological effects could be interpreted as the result of alterations in the regulation of natural fungal growth processes. This report describes the effect of sclareol on the germination and growth of rust fungiin vitro, and the protection it can provide to plants against diseases caused by these fungi.