EROL: Impact of Damage-induced Changes in Oak Leaves on Susceptibility of Gypsy Moth to a Baculovirus

该项目的实地和实验室研究， 以确定是否损害引起的橡树叶性状的变化， 对舞毒蛾（GM）有净的负面或正面影响。 先前的工作表明，损伤诱导的叶片中 酚类物质可使幼虫生长和成虫繁殖力降低30%， 更多（罗西特等人，1988）。 因此，树的响应可能有一个 对转基因群体的负面影响。 酚类物质含量更低 比诱导后的树叶表现出强烈的抑制作用 舞毒蛾核型多角体感染转基因幼虫 病毒（GMNPV）。 因此，存在诱导 “防御”在橡树实际上有利于通用汽车公司。 这些研究 旨在比较这两种效应， 这让我们可以推断出感应的净影响-积极的或消极的， 否定的-在GM上。 项目组将利用转基因幼虫， 在叶片性状上产生损伤诱导的变化， 诱导和控制叶子，并评估这些叶子的影响 饮食对GMNPV有效性的影响。 结果将允许 诱导降低繁殖力的能力与其 对转基因人群死亡率的影响，并将澄清 寄主植物化学和这种成功之间的关系 森林害虫 研究结果将有助于生态理论 病原体/植物/动物的相互作用，并将立即 森林管理者的兴趣。

This project of both field and laboratory research intends to determine whether damage-induced changes in oak leaf traits have a net negative or positive influence on the gypsy moth (GM). Previous work demonstated that damage-induced increases in leaf phenolics can depress larval growth and adult fecundity by 30% or more (Rossiter et al. 1988). Thus tree responses could have a negative impact on GM populations. Phenolic levels even lower than those exhibited by induced tree leaves strongly inhibit infection of GM larvae by the Gypsy Moth Nuclear Polyhedrosis Virus (GMNPV). Hence, the possibility exists that induced "defenses" in oaks actually benefit the GM. These studies are designed to compare these two effects and provide information allowing us to infer the net influence of induction - positive or negative - on the GM. The project team will use GM larvae to generate damage-induced changes in leaf traits, rear larvae on induced and control leaves, and assess the influence of these diets on GMNPV effectiveness. The results will permit a comparison of induction's ability to reduce fecundity with its impact on mortality in GM populations, and will clarify the relationship between hostplant chemistry and the success of this forest pest. Results will contribute to ecological theory on pathogen/plant/animal interactions and will be of immediate interest to forest managers.//