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中国农学通报 ›› 2022, Vol. 38 ›› Issue (6): 107-115.doi: 10.11924/j.issn.1000-6850.casb2021-0673

所属专题: 生物技术

• 生物科学 • 上一篇    下一篇

高温胁迫对化学感受蛋白在家蚕中肠与脂肪体中基因表达的影响

肖阳(), 李庆荣, 邢东旭, 杨琼()   

  1. 广东省农业科学院蚕业与农产品加工研究所,广州 510610
  • 收稿日期:2021-07-09 修回日期:2021-09-15 出版日期:2022-02-25 发布日期:2022-03-16
  • 通讯作者: 杨琼
  • 作者简介:肖阳,女,1982年出生,湖南长沙人,副研究员,硕士研究生,主要从事家蚕育种与分子机理研究。通信地址:510610 广东省广州市天河区东莞庄一横路蚕业所,Tel:020-89282649,E-mail: xiaoyang@gdaas.cn
  • 基金资助:
    国家自然科学基金项目“家蚕化学感受蛋白BmCSPs基因在高温应答中的功能解析”(31802135);广东省现代农业蚕桑产业技术体系创新团队项目“蚕病防治岗位经费”(2020KJ124);广东省农业科学院农业优势产业学科团队建设项目“蚕桑多元化创新利用”(202119TD)

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

摘要:

通过探讨高温胁迫对家蚕化学感受蛋白基因表达水平的影响,为家蚕高温耐受机理的阐明及耐高温品种选育奠定基础,本实验对BmCSPs基因序列进行聚类分析,并通过荧光定量PCR方法对高温胁迫不同时间后BmCSPs在中肠和脂肪体内的表达情况进行检测。实验结果表明,16个BmCSPs基因依据序列相似性主要聚为2个大类,其中BmCSP15在中肠、脂肪体中受高温胁迫的大部分时间点均出现表达上调,而BmCSP7BmCSP9BmCSP14在这两个组织中均出现表达下调,推测BmCSP15与家蚕对高温的耐受性密切相关,BmCSP7BmCSP9BmCSP14与高温敏感性相关,基因表达量检测结果与基因序列的聚类结果大致吻合。由此可见,在家蚕受高温胁迫前后BmCSPs基因发生了转录水平的变化,其参与家蚕对高温胁迫的应答,筛选出的差异表达基因可作为家蚕高温响应的候选基因。

关键词: 高温胁迫, 家蚕, 化学感受蛋白, 基因表达

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

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