The salicylic acid analog BTH (benzo-(1,2,3)-thiadiazole-7-carbothioic-acid S-methyl ester) induces systemic acquired resistance by promoting plant resistance against numerous plant pathogens and some insect pests. The objective of the research was to evaluate the activation of plant defenses with BTH on melon (Cucumis melo L., Cucurbitaceae) and its effects on the herbivore Aphis gossypii Glover, 1877 (Hemiptera: Aphididae) and on the aphid predator Chrysoperla carnea (Stephens, 1836) (Neuroptera: Chrysopidae). Under laboratory conditions, plants were sprayed with BTH (50 g/ha) zero (B0), four (B4), and seven (B7) days prior exposure to insects. B0 treatment resulted in 100% mortality of aphid nymphs and disrupted adult feeding behavior (recorded by electrical-penetration-graphs technique), by prolonging the time to reach the phloem, requiring more probes to first salivation and reducing ingestion activities. There were no effects on feeding behavior of A. gossypii fed on B4 plants but on its life history because fewer nymphs were born, intrinsic rate of natural growth decreased, and mortality increased. There were no effects on biological parameters of aphids reared on B7 plants. Prey consumption by C. carnea larvae when predated A. gossypii fed on BTH-treated plants was not different among treatments. Therefore, BTH enhances the suppression of A. gossypii in the short term, without negative effects on the predatory larva C. carnea, which makes this plant strengthener a useful tool to be considered in integrated pest management programs.

中文翻译：

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水杨酸类似物对甜瓜植物棉蚜及其捕食者天竺葵的影响

水杨酸类似物BTH（苯并-（1,2,3）-噻二唑-7-硫代甲酸S-甲酯）通过促进植物对多种植物病原体和某些害虫的抗性来诱导系统获得性抗性。该研究的目的是评估BTH对甜瓜（Cucumis melo L.，葫芦科）的植物防御作用及其对食草动物Aphis gossypii Glover，1877（Hemiptera：Aphididae）和蚜虫捕食者Chrysoperla carnea的影响（Stephens，1836年）（Neuroptera：Chrysopidae）。在实验室条件下，在接触昆虫之前，将BTH（50 g / ha）零（B0），四（B4）和七（B7）天喷给植物。B0处理通过延长到达韧皮部的时间，导致更多的首次唾液分泌和减少摄入活动的探针，导致蚜虫若虫的死亡率达到100％，并破坏了成虫的进食行为（通过电渗透图技术记录）。饲喂B4植物的棉铃虫对饲喂行为没有影响，但对其生活史没有影响，因为若虫的出生减少，自然生长的内在速率降低，死亡率增加。对B7植物上饲养的蚜虫的生物学参数没有影响。捕食角膜念珠菌幼虫的捕食物棉蚜取食BTH处理厂是处理之间没有不同。因此，BTH增强的抑制棉蚜在短期内，不会对掠夺性幼虫负面影响C.吉祥草，这使得这种植物强化剂一个有用的工具，在虫害综合防治方案加以考虑。