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Chinese Journal Of Biological Control ›› 2020, Vol. 36 ›› Issue (4): 632-636.DOI: 10.16409/j.cnki.2095-039x.2020.03.022

• SCIENTIFIC NOTES • Previous Articles    

Differential Expression of Genes Associated with Lipid Metabolism in Diapausing Lysiphlebus testaceipes Cresson

LIU Min1, LIU Aiping1, HAN Haibin1, GAO Shujing1, XU Linbo1, YUE Fangzheng2, HUANG Haiguang3   

  1. 1. Institute of Grassland Research, Chinese Academy of Agricultural Science, Hohhot 010000, China;
    2. National Forestry and Grassland Bureau Forest and Grassland Diseases and Insects Pests Control, Shenyang 110034, China;
    3. Inner Mongolia Autonomous Region Forestry Science Research Institute, Hohhot 010010, China
  • Received:2019-07-02 Online:2020-08-08 Published:2020-08-07

Abstract: Lysiphlebus testaceipes Cresson (Hymenoptera:Aphidiidae) is an excellent ectoparasitic wasp of Aphis craccivora Koch. This parasitoid has the potential to suppress populations of A. craccivora. Diapause is a genetic phenomenon of insects adapting to unfavorable environmental conditions. In this study, we employed transcriptome sequencing analyses to screen differentially expressed genes (DEGs) between diapause groups and non-diapause groups. We found that the DEGs were primarily associated with carbohydrate metabolism, lipid metabolism, signal transduction and so on. With the help of KEGG database, a total of 401 DEGs related to lipid metabolism during diapause were screened out. These DEGs, up-regulated to some extent during diapause, are related to fatty acid biosynthesis, glycerol metabolism, steroid biosynthesis and other metabolic pathways. Expression of the genes related to fatty acid synthase and elongase of verylong chain fatty acids was up-regulated, genes of enzymes related to lipid decomposition, such as esterase, were also up-regulated in expression, which may be involved in immunity improvement in L. testaceipes. The up-regulated expression of genes related to hormone synthesis may inhibit the ovarian development.

Key words: Lysiphlebus testaceipes, transcriptomics, diapause-associated gene, lipid metabolism

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