国内外当前研究主要集中在倍增CO2浓度对植食性昆虫某一世代的研究，结果通常表明昆虫对倍增CO2浓度存在着明显的应激响应。而高CO2浓度对昆虫的影响是一个逐渐递增和长期累积的过程，刺吸式昆虫连续多代对倍增CO2浓度的响应可能较渐增CO2浓度处理更为显著。本项目拟设置三种CO2浓度（对照CO2、递增CO2、倍增CO2浓度）处理，研究三种CO2浓度处理下水稻C-源抗性物质和N-源化学物质的分配规律；分析三种CO2浓度对褐飞虱连续继代生活史参数和种群潜在危害能力的影响；明确三种CO2浓度下褐飞虱体内酶活性的响应特征；探讨褐飞虱关键调控基因对三种CO2浓度处理的分子响应机制。本项目的实施将明确褐飞虱对渐增CO2浓度的响应是否存在一个递增累积和生态适应的过程?其结果有助于客观评价当前国内外研究是否高估了刺吸式昆虫对大气CO2浓度升高的应激性响应?

Most Published documents focused on the effect of abrupt increase in CO2 on a single generation of herbivorous insects, which indicated that there was a significant stress response of insects to double increase in CO2. However, the response of insects to elevated CO2 is a long-term and cumulative process, there may be a significant difference between gradual increase and double increase in CO2 treatments on the successive generations of piercing sucking insects. In this study, we set up three CO2 concentrations (ambient CO2, gradual increase in CO2, and abrupt increase in CO2) to study the effect of elevated CO2 on the allocation of C-resistant and N-nutrition substances in transgenic rice, analyze the response of multi-generation life history parameters and population potentially harmful capacity of brown planthopper to elevated CO2, clarify the characteristics of physiological metabolism of brown planthopper in response to elevated CO2, discuss the molecular response mechanism of regulating gene of brown planthopper under elevated CO2. The implementation of this project will explore whether there is an incremental and cumulative and ecological adatation on Brown planthopper in response to elevated CO2? The results will help to exemplify whether the current research overestimate the response of piercing sucking insects to abrupt rise in atmospheric CO2?