Genome-wide DNA methylation profile and its function in regulating Vip3Aa tolerance in fall armyworm (Spodoptera frugiperda)
文献类型: 外文期刊
第一作者: Zou, Luming
作者: Zou, Luming;Liu, Zhenxing;Jin, Minghui;Wang, Peng;Shan, Yinxue;Xiao, Yutao
作者机构:
关键词: Vip3Aa tolerance; DNA methylation; Spodoptera frugiperda; adaptation
期刊名称:PEST MANAGEMENT SCIENCE ( 影响因子:3.8; 五年影响因子:4.3 )
ISSN: 1526-498X
年卷期: 2024 年
页码:
收录情况: SCI
摘要: BACKGROUND: Vegetative insecticidal proteins (Vips) are widely used in pest management, but Vip tolerance poses a significant threat. DNA methylation plays important roles in regulating the response of biological organisms to environmental stress, and it may also regulate fall armyworm (FAW, Spodoptera frugiperda) Vip3Aa tolerance. RESULTS: In this study, a DNA methylation map was developed for FAW, and its function in regulating FAW Vip3Aa tolerance was explored. The FAW genome-wide DNA methylation map showed that exons were preferred regions for DNA methylation and housekeeping genes were highly methylated. FAW was screened using Vip3Aa for ten generations, and bioassays indicated that Vip3Aa tolerance increased trans-generationally. A comparison of DNA methylation maps between Vip3Aa-tolerant and -susceptible strains showed that gene body methylation was positively correlated with gene expression level. FAW exhibits significant variation in DNA methylation among individuals, and Vip3Aa screening induces epigenetic variation based on DNA methylation. Moreover, the study demonstrated that a reduction in methylation density within the gene body of a 3 ' 5 '-cyclic nucleotide phosphodiesterase gene resulted in decreased expression and increased tolerance of FAW to Vip3Aa, which was validated through RNA interference experiments. CONCLUSION: The DNA methylation map and mechanism of Vip3Aa tolerance improve our understanding of DNA methylation and its function in Lepidoptera and provide a new perspective for developing pest management strategies. (c) 2024 Society of Chemical Industry.
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