以大气CO2浓度与O3浓度升高为主要特征的全球气候变化已成为国际关注的焦点。本项目拟利用室外开顶式气室（open top chamber，OTC）模拟大气CO2与O3浓度升高环境，以重要入侵害虫Q型烟粉虱及其所传播的番茄黄化曲叶病毒为研究对象，以水杨酸与茉莉酸这两种与植物抗性相关的番茄突变体为介导体，研究番茄诱导防御途径的基因表达、植物激素介导的抗性途径、Q型烟粉虱的传毒行为、番茄黄化曲叶病毒的发生对CO2与O3浓度升高的响应特征，明确未来CO2和O3浓度升高背景下烟粉虱传播病毒能力的变化规律，阐明番茄茉莉酸与水杨酸防御途径以及这两种途径的交互影响在介导病虫抗性中的作用，揭示 "番茄突变体－烟粉虱－番茄黄化曲叶病毒"系统对CO2与O3浓度升高的响应特征及其作用机制，为未来气候变化背景下烟粉虱及其所传播的病毒病综合治理提供重要的科学依据。

Elevation in atmospheric CO2 and O3 concentrations as the main features during global climate change has attracted high international attention. In this study, we tend to use the open top chamber (OTC) facilities to monitor the elevated CO2 and O3 atmospheric conditions in the field. The response of an important invasive pest, whitefly Bemisia tabaci Gennadius biotype B and its transmitted virus-Tomato Yellow Leaf Curl Virus to elevated CO2 and O3 will be examined in this experiment. Two lines of tomatoes including salicylate-deficient and jasmonate-deficient transgenic tomatoes, which are known to be related to plant resistance, will be employed as the host plants. The plant resistance-related gene expression, phytohormone-mediated resistance signaling pathway, the virus transmission behavior of whitefly and the occurance of Tomato Yellow Leaf Curl Virus will be evaluated under elevated CO2 and O3 concentrations in this study. Combined evaluations of the whitefly transmission ability and the plant response to whitefly and virus challenge, we could confirm the virus transmission characteristics of whitefly and test the predictions about the relative effect of jasmoate/salicylate-mediated pathways and their cross-talk on plant virus resistance under elevated CO2 and O3 concentrations. Furthermore, we could disclose the mechanisms of tomato mutants-whitefly- Tomato Yellow Leaf curl Virus system in response to elevated CO2 and O3 concentrations. Our findings could provide scientific basis for the ecological control of whitefly and tomato viruses under projected rising CO2 and O3 conditions in the future.