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Regulatory Role of Trehalose Metabolism in Cold Stress of Harmonia axyridis Laboratory and Overwinter Populations

文献类型： 外文期刊

作者： Wan, Sijing 1 ; He, Jianyun 1 ; Chao, Lei 1 ; Shi, Zuokun 1 ; Wang, Shasha 1 ; Yu, Weidong 3 ; Huang, Zhen 3 ; Wang, Su 4 ; Wang, Shigui 1 ; Zhang, Zhijun 2 ;

作者机构： 1.Hangzhou Normal Univ, Coll Life & Environm Sci, Hangzhou Key Lab Anim Adaptat & Evolut, Hangzhou 310036, Peoples R China

2.Zhejiang Acad Agr Sci, Inst Plant Protect & Microbiol, Hangzhou 310021, Peoples R China

3.Zhejiang Dingyi Biotechnol Corp, Quzhou 324100, Peoples R China

4.Beijing Acad Agr & Forestry Sci, Inst Plant & Environm Protect, Beijing 100089, Peoples R China

关键词： Harmonia axyridis (Pallas); cold hardiness; trehalose; trehalase; RT-qPCR

期刊名称：AGRONOMY-BASEL （ 影响因子：3.7； 五年影响因子：4.0 ）

ISSN：

年卷期： 2023 年 13 卷 1 期

页码：

收录情况： SCI

摘要： Trehalose is a non-reducing disaccharide that plays a key role in the response to cold and other environmental stressors in insects. Harmonia axyridis (Pallas) is an important natural predator of insect pests and has become a cosmopolitan invasive species, causing negative ecological impacts worldwide. In this study, the relative survival ability, trehalose and glycogen contents, trehalose activity and trehalose metabolism-related gene-expression profiles over a cold storage period were compared in a natural overwintering population and an indoor laboratory (experimental) population. Yellow adults were dominant in the overwintering population. The survival rate of the overwintering population during the cold storage period was higher than that of the experimental population after the fifth day. The contents of trehalose and glycogen in the overwinter population were higher than those of the experimental population during cold storage. Trehalose and glycogen contents initially increased and then decreased in the overwinter population, but decreased consistently over the cold storage period in the experimental population. Nevertheless, trehalose levels were relatively higher during the cold storage period in the overwinter population, with higher expression of TPS and TRE and trehalase activity. More importantly, the experiment showed that yellow adults have a better ability to regulate trehalose metabolism under cold storage compared to black adults. A strong resilience against cold stress and long-term cold storage ability could contribute to a better understanding of the invasiveness of H. axyridris.

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