昆虫趋光行为是一种光胁迫下的应激飞行行为，是一种剧烈运动和高速耗能活动，需要能量代谢系统高速运行来同时满足光胁迫应激及飞行肌供能需要。昆虫为了适应某些高速耗能活动的生理生化要求，在能量代谢方面演化出磷酸甘油酯穿梭（G-3-P）循环的独特机制。由GPDH调控的G-3-P循环是维持昆虫飞行肌高速糖酵解的关键。琥珀酰化修饰可以调控能量代谢关键酶的催化活性。申请者前期研究发现在粘虫趋光应激飞行过程中，G-3-P循环的关键酶GPDH琥珀酰化水平显著下调，暗示GPDH琥珀酰化修饰可能参与粘虫趋光应激飞行的能量代谢调控。基于这一假设，我们拟从分子、细胞及虫体水平等多层次探讨GPDH琥珀酰化修饰在粘虫趋光飞行能量代谢中的作用和机制，这对理解昆虫环境胁迫下的生理适应策略，揭示昆虫趋光应激飞行的能量代谢机制，丰富和完善昆虫趋光理论具有重要科学意义和实践价值。

Insect phototactic behavior is a kind of flight behavior under light stress. It is a kind of strenuous movement and high-speed energy-consuming activities. It requires high-speed work of energy metabolism system to meet the response of light stress and the requirement of flight muscle power supply. In order to adapt to the physiological and biochemical requirements of certain high-speed energy-consuming activities, insects have evolved a unique mechanism of the glycerophosphate shuttle (G-3-P) cycle in energy metabolism. The G-3-P cycle regulated by GPDH is the key to maintaining high-speed muscle glycolysis in insect flight. Succinylation modifies the catalytic activity of key enzymes in energy metabolism. Previous studies by applicants found that the key enzyme GPDH succinylation level in the G-3-P cycle was significantly down-regulated during the light stress flight of armyworms, suggesting that the GPDH succinylation may be involved in the energy metabolism regulation of light-induced stress flight of armyworms. Based on this hypothesis, we intend to explore the role and mechanism of succinylation modification of GPDH in the energy metabolism during light-induced flight of armyworm, from multiple levels such as molecular, cellular and individual levels. It is of great importance in understanding the physiological adaptation strategies under insect environmental stress and of great scientific and practical significance to reveal the energy metabolism mechanism of insect phototactic flight and enrich the insect phototaxis theory.