The Endogenous Metabolic Response of Tribolium castaneum under a High Concentration of CO 2

Min Zhou, Xinyu Zhang, Biying Pan, Jiaqi Zhu, Xiaoxiao Qian, Xian Li, Kangkang Xu, Bin Tang and Can Li
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Min Zhou: Guizhou Provincial Key Laboratory for Rare Animal and Economic Insect of the Mountainous Region, Department of Biology and Engineering of Environment, Guiyang University, Guiyang 550005, China
Xinyu Zhang: Guizhou Provincial Key Laboratory for Rare Animal and Economic Insect of the Mountainous Region, Department of Biology and Engineering of Environment, Guiyang University, Guiyang 550005, China
Biying Pan: College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
Jiaqi Zhu: College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
Xiaoxiao Qian: College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
Xian Li: Guizhou Provincial Key Laboratory for Rare Animal and Economic Insect of the Mountainous Region, Department of Biology and Engineering of Environment, Guiyang University, Guiyang 550005, China
Kangkang Xu: Guizhou Provincial Key Laboratory for Rare Animal and Economic Insect of the Mountainous Region, Department of Biology and Engineering of Environment, Guiyang University, Guiyang 550005, China
Bin Tang: College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
Can Li: Guizhou Provincial Key Laboratory for Rare Animal and Economic Insect of the Mountainous Region, Department of Biology and Engineering of Environment, Guiyang University, Guiyang 550005, China

Agriculture, 2022, vol. 12, issue 7, 1-12

Abstract: High carbon dioxide concentrations can effectively control most storage pests. To estimate the toxicity effect of high concentrations of CO 2 , four different concentrations of CO 2 (25% CO 2 , 50% CO 2 , 75% CO 2 , and 95% CO 2 ) were used to treat Tribolium castaneum , and the biochemical (carbohydrate content and gene expression level) and physiological (mortality, pupation, eclosion rate, and weight) features of insects submitted to different treatments with CO 2 were evaluated. The T. castaneum mortality rate was 50% in approximately 2 days when exposed to a treatment with 95% CO 2 . When the CO 2 concentration exceeded 75%, the pupation rate and eclosion rate of T. castaneum seriously declined. Higher than 25% CO 2 concentrations resulted in a lower weight and shrunken body size of T. castaneum . It was further found that different CO 2 concentration treatments all influenced the levels of the three carbohydrate contents in T. castaneum . In addition, according to the detection of trehalose metabolism pathway-related genes, T. castaneum mainly responds to stress factors via high expression of TPS , TRE1-2 , and TRE1-3 . Our results enrich the evaluation of the toxicity effect of CO 2 treatment on grain storage pests, providing a basis for further improving the method of regulating grain storage to control insect pests.

Keywords: Tribolium castaneum; high CO 2 regulation treatment; endogenous metabolism; trehalose metabolism; insulin signaling pathway (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2022
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