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Transcriptome Analysis Reveals Gene Expression Changes Of The Fat Body Of Silkworm (Bombyx Mori L.) In Response To Selenium Treatment

文献类型： 外文期刊

作者： Wei, Zhao-Jun;Hu, Fei;Tang, Shun-Ming;Tang, Shun-Ming;Peng, Li-Li;Jiang, Li;Thakur, Kiran;Cao, Yu-Yao

作者机构：

关键词： Bombyx Mori L.; Selenium; Fat Body; Antioxidant Defense System; Detoxification System; Transcriptome

期刊名称： CHEMOSPHERE

ISSN： 0045-6535

年卷期： 2020 年 245 卷

页码：

摘要： A comparative transcriptome analysis was conducted to investigate the gene expression changes in the fat body of silkworm after treatment with different concentrations (50 mu M and 200 mu M) of selenium (Se). 912 differential expression genes (DEGs) (371 up-regulated and 541 down-regulated) and 1420 DEGs (1078 up-regulated and 342 down-regulated) were identified in silkworm fat body treated with 50 mu M and 200 mu M of Se, respectively. In case of 50 mu M group, DEGs were mainly enriched in the peroxisome pathway and fatty acid metabolism pathway, and later were associated with antioxidant defense and nutrition regulation. After 200 mu M Se-treatment, DEGs were mainly located in the glycerolipid metabolism and arachidonic acid metabolism pathways, which further encoded detoxification related genes. Furthermore, 32 candidate DEGs from these pathways had been selected to confirm the RNA-seq data. Among these DEGs, 14 genes were up-regulated in the 50 mu M Se-treated group (only three genes in the 200 mu M Se-treated group) which were involved in lipid metabolism and antioxidant defense, and 13 upregulated genes (only two genes were up-regulated in the 50 mu M Se-treated group) were involved in detoxification of the 200 mu M Se-treated group. These changes showed that lower concentration of Se could regulate the nutrition and promote antioxidation pathways; whereas, high levels of Se promoted the detoxification of silkworm. These findings can be helpful to understand the possible mechanisms of Se action and detoxification in silkworm and other insects. (C) 2019 Elsevier Ltd. All rights reserved.

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