Genetic analysis and transcriptome analysis of the mini mutant of the silkworm, Bombyx mori

文献类型： 外文期刊

第一作者： Gao, Mengjie

作者： Gao, Mengjie;Mei, Xinglin;Li, Cong;Yu, Pengcheng;Shen, Dongxu;Zhao, Qiaoling;Gao, Mengjie;Mei, Xinglin;Li, Cong;Yu, Pengcheng;Shen, Dongxu;Zhao, Qiaoling

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关键词： Bombyx mori; differentially expressed genes; growth and development; Mini mutant; transcriptome

期刊名称：ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY （ 影响因子：1.698； 五年影响因子：1.758 ）

ISSN： 0739-4462

年卷期： 2021 年 107 卷 1 期

页码：

收录情况： SCI

摘要： The expression levels of some intrinsic genes, protease activity, and regulation of signaling pathways were distinct during different growth and development stages in the silkworm, Bombyx mori. The silkworm mutant mini was discovered from the normal silkworm strain S8V, and the body-size of the mini mutant was smaller than the wild-type from the second-instar and the difference became more significant in the following stages. In this study, genetic analysis of mini mutant showed that mini mutant was controlled by a single recessive gene, manifested as homozygous lethal. Then, the transcriptome analysis of the mini mutant indicated that 2944 differentially expressed genes (DEGs) were identified from the silkworm in the 48 h of the second-instar, of which 1638 genes in the mini mutants were upregulated and 1306 genes were downregulated. These DEGs were mainly distributed in the biological process, cellular component, and molecular function. The functional annotation based on the KEGG database showed that these genes were mainly clustered in metabolic pathways, fatty acid metabolism pathways, ribosome biogenesis in eukaryotes, and so on. Further analysis indicated that some genes involved in the growth and metabolism including enzyme genes, juvenile hormone, and ecdysone exhibited different transcriptional levels. These results provided new experimental evidence regarding the mechanism of the underlying formation of mini mutants.

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