IBEAS (URA CNRS 1298), Université F. Rabelais, Avenue Monge, Parc Grandmont, 37200, Tours, France.
J Chem Ecol. 1992 Nov;18(11):1991-2002. doi: 10.1007/BF00981922.
It has been shown previously that sulfur volatiles produced byAllium plants affect the behavior of their specialist phytophages and of their specialist entomophages. The action of these compounds in protecting the leek mothAcrolepiopsis assectella against generalist entomophages was studied in comparison to the proposed original defensive role of these compounds against generalist herbivorous insects. Two ants species,Formica selysi andF. fusca, were used as generalist predators. Six behavioral criteria of the predatory behavior of the ants were studied in presence of the last-instar caterpillars (C5). C5 reared on artificial diets with or without leek components were tested, as well as C5 soaked in frass of leek-reared caterpillars or disulfide solutions. In addition, the response of the ants to pure chemicals found in leek was studied using honey solutions with or without sulfur compounds. The sulfur allelochemicals ofAllium plants have a negative action on predatory ants. Interestingly, the nonvolatile precursors of sulfur volatiles ofAllium plants seem to have a protective role for their phytophagous insects against generalist entomophages.
先前已经表明，葱属植物产生的挥发性硫对其专食性植食者和专食性昆虫的行为有影响。本文研究了这些化合物在保护韭蛾 Acrolepiopsis assectella 免受广食性昆虫侵害方面的作用，与这些化合物对广食性草食性昆虫的原始防御作用进行了比较。两种蚂蚁物种，Formica selysi 和 F. fusca，被用作广食性捕食者。在存在最后龄期幼虫（C5）的情况下，研究了蚂蚁捕食行为的六个行为标准。用含有或不含有葱属植物成分的人工饲料饲养 C5，并测试了用韭属饲养的幼虫粪便或二硫化物溶液浸泡过的 C5。此外，使用含有或不含有硫化合物的蜂蜜溶液研究了在葱中发现的纯化学物质对蚂蚁的反应。葱属植物的硫化感物质对捕食性蚂蚁有负面影响。有趣的是，葱属植物挥发性硫的非挥发性前体似乎对其植食性昆虫具有保护作用，使其免受广食性昆虫的侵害。
