Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2022, Vol. 38 ›› Issue (6): 107-115.doi: 10.11924/j.issn.1000-6850.casb2021-0673

Special Issue: 生物技术

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Effects of High Temperature Stress on Gene Expression of Chemosensory Protein in Midgut and Fat Body of Bombyx mori

XIAO Yang(), LI Qingrong, XING Dongxu, YANG Qiong()   

  1. Sericulture & Agri-food Research Institute, Guangdong Academy of Agriculture Sciences, Guangzhou 510610
  • Received:2021-07-09 Revised:2021-09-15 Online:2022-02-25 Published:2022-03-16
  • Contact: YANG Qiong E-mail:xiaoyang@gdaas.cn;serilover@126.com

Abstract:

To lay a foundation for clarifying the mechanism of high temperature tolerance of silkworm and breeding high temperature-resistant silkworm varieties, the effect of high temperature stress on the expression of chemosensory proteins (CSPs) in Bombyx mori was studied. In this research, cluster analysis of gene sequences of BmCSPs was carried out, and the expression of BmCSPs in midgut and fat body subjected to high temperature stress for different time was detected by fluorescence quantitative PCR. The results showed that the 16 BmCSPs genes were mainly clustered into two groups according to sequence similarity. Among them, the expression level of BmCSP15 was up-regulated in midgut and fat body at most time points under high temperature stress, while that of BmCSP7, BmCSP9 and BmCSP14 were down-regulated in these tissues. It was speculated that BmCSP15 was closely related to the tolerance to high temperature in silkworm, and BmCSP7, BmCSP9 and BmCSP14 might be correlated with the sensitivity to high temperature. The gene expression results were roughly consistent with the clustering results of gene sequences. From the results, it can be seen that the transcription levels of BmCSPs changed before and after high temperature stress, indicating that BmCSPs are involved in the response of silkworm to high temperature stress. The differentially expressed genes screened in the study can be used as candidate genes for high temperature response of silkworm.

Key words: high temperature stress, Bombyx mori, chemosensory protein, gene expression

CLC Number: