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Synthetic acylsugars and their effects on the control of arthropod pests

机译：合成酰基糖及其对节肢动物害虫控制的作用

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摘要

One of the main problems facing agriculture is the loss of production as a result of the attack of agricultural pests. Alternative ways to work around this problem are being sought. There are substances called acylsugars that are naturally produced by the wild tomato species S. pennellii and affect arthropod pests. The objectives of this work were to synthesize two acylsugars and assess the biological effect of these on the arthropod pests Bemissia tabaci and Tetranycus urticae . The syntheses were performed via the reactions of glucose and sucrose (saccharose) with acetic anhydride using sodium acetate as the catalyst. The products of these reactions were sucrose octa-acetate and glucose penta-acetate, the structures of which were confirmed by spectroscopic techniques. In a resistance test against the mite, a linear correlation between the concentration of the synthesized substances, and the dislocation of the mite was obtained. A delay in the hatching of the arthropod eggs was observed, causing a mortality rate of approximately 95% in the 1 st instar larvae of mites that was confirmed in adults. In the biological tests with Bemisia tabaci , there was a low rate of hatching and emergence, and the effect on the nymphs was the deformation of the emergent adults.
机译：农业面临的主要问题之一是由于农业病虫害造成的生产损失。寻找替代方法来解决此问题。有一些叫做酰基糖的物质，是野生番茄种S. pennellii天然产生的，会影响节肢动物的害虫。这项工作的目的是合成两种酰基糖，并评估它们对节肢动物害虫Bemissia tabaci和Tetranycus urticae的生物学作用。使用乙酸钠作为催化剂，通过葡萄糖和蔗糖（蔗糖）与乙酸酐的反应进行合成。这些反应的产物是蔗糖八乙酸酯和五乙酸葡萄糖酯，其结构通过光谱技术确认。在对螨的抗性试验中，获得了合成物质的浓度与螨的位错之间的线性相关性。观察到节肢动物卵的孵化延迟，在成年螨的第一龄幼虫中导致大约95％的死亡率。在烟粉虱的生物学测试中，孵化和出苗率很低，对若虫的影响是出苗的成虫的变形。

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