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Trehalose metabolism mediates trade-offs between reproduction and survival in beet webworm, Loxostege sticticalis, under heat stress

文献类型： 外文期刊

作者： Tian, Zhiqiang 1 ; Qiao, Yijie 1 ; Xie, Dianjie 1 ; Puqian, A. 1 ; Zhang, Lei 1 ; Cheng, Yunxia 1 ; Jiang, Xingfu 1 ; Michaud, Jp 2 ;

作者机构： 1.Chinese Acad Agr Sci, State Key Lab Biol Plant Dis & Insect Pests, Inst Plant Protect, Beijing 100193, Peoples R China

2.Kansas State Univ Hays, Agr Res Stn, Dept Entomol, Hays, KS USA

关键词： development; differentially expressed genes; reproduction; the percent of ovary development grades

期刊名称：PEST MANAGEMENT SCIENCE （ 影响因子：3.8； 五年影响因子：4.3 ）

ISSN： 1526-498X

年卷期： 2025 年 81 卷 2 期

页码：

收录情况： SCI

摘要： BACKGROUND: Temperature is an important determinant of developmental and reproductive rates in insects. Here, we investigated the physiological responses of adult beet webworm, Loxostege sticticalis L. (Lepidoptera: Crambidae), to three temperatures (16, 23 and 30 degrees C) focusing on trehalose metabolism. RESULTS: Exposure of moths to 30 degrees C accelerated eclosion and ovarian development, but shortened the oviposition period and adult longevity, whereas exposure to 16 degrees C had opposite effects. Transcriptome analysis revealed that vitellogenin (VG) and vitellogenin receptor (VR) genes were up-regulated at 30 degrees C, as were numerous genes related to energy metabolism, including those involved in the insulin signaling pathway, the tricarboxylic acid (TCA) cycle, and glycolysis. Expression of the trehalose transporter gene TRET1 was also induced at high temperature, primarily in the ovaries, where trehalose content increased, accompanied by lipid degradation in the fat body. Treatment with the trehalase inhibitor validamycin A reduced female fecundity and longevity at 23 degrees C, but enhanced the expression of genes related to stress resistance and reproduction, mimicking the effect of high temperature. CONCLUSION: Besides their practical utility for predicting the oviposition behavior and geographic distribution of L. sticticalis in the field, these results elucidate the various physiological roles of trehalose in L. sticticalis during exposure of moths to high temperature and may provide insights into the relationship between stress resistance and reproduction in insects more generally. (c) 2024 Society of Chemical Industry.

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