Molecular characterization of DNA methyltransferase 1 and its role in temperature change of armyworm Mythimna separata Walker
文献类型： 外文期刊
作者： Wang, Yaru 1 ; Wang, Falv 1 ; Hong, Ding-kai 1 ; Gao, San-ji 1 ; Wang, Ran 3 ; Wang, Jin-da 1 ;
作者机构： 1.Fujian Agr Univ, Natl Engn Res Ctr Sugarcane, Fuzhou 350002, Peoples R China
2.Fujian Agr & Forestry Univ, State Key Lab Ecol Pest Control Fujian & Taiwan C, Fuzhou, Peoples R China
3.Beijing Acad Agr & Forestry Sci, Inst Plant & Environm Protect, Beijing 100097, Peoples R China
关键词： DNA methyltransferase 1; Mythimna separata; RNAi; temperature
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： 2020 年 103 卷 4 期
页码：
收录情况： SCI
摘要： DNA methylation refers to the addition of cytosine residues in a CpG context (5 '-cytosine-phosphate-guanine-3 '). As one of the most common mechanisms of epigenetic modification, it plays a crucial role in regulating gene expression and in a diverse range of biological processes across all multicellular organisms. The relationship between temperature and DNA methylation and how it acts on the adaptability of migratory insects remain unknown. In the present work, a 5,496 bp full-length complementary DNA encoding 1,436 amino acids (named MsDnmt1) was cloned from the devastating migratory pest oriental armyworm, Mythimna separata Walker. The protein shares 36.8-84.4% identity with other insect Dnmt1 isoforms. Spatial and temporal expression analysis revealed that MsDnmt1 was highly expressed in adult stages and head tissue. The changing temperature decreased the expression of MsDnmt1 in both high and low temperature condition. Besides, we found that M. separata exhibited the shortest duration time from the last instar to pupae under 36 degrees C environment when injected with DNA methylation inhibitor. Therefore, our data highlight a potential role for DNA methylation in thermal resistance, which help us to understand the biological role adaptability and colonization of migratory pest in various environments.
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