文献类型： 外文期刊

作者： Hua, Jin-feng ¹ ; Zhang, Lei ¹ ; Han, Yong-hua ¹ ; Gou, Xiao-wan ¹ ; Chen, Tian-yuan ² ; Huang, Yong-mei ² ; LI, Yan-qing ² ; Ma, Dai-fu ¹ ; LI, Zong-yun ¹ ;

作者机构： 1.Jiangsu Normal Univ, Inst Integrat Plant Biol, Sch Life Sci, Jiangsu Key Lab Phylogen & Comparat Genom, Xuzhou 221116, Peoples R China

2.Guangxi Acad Agr Sci, Inst Maize Res, Sweet Potato Lab, Nanning 530007, Peoples R China

3.Chinese Acad Agr Sci, Inst Sweet Potato Res, Xuzhou Acad Agr Sci, Xuzhou 221131, Peoples R China

关键词： Cylas formicarius; PacBio sequencing; high-through chromosome conformation capture; chromosome-level genome; chemosensory genes; fluorescence competitive binding

期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：4.8； 五年影响因子：4.8 ）

ISSN： 2095-3119

年卷期： 2023 年 22 卷 3 期

页码：

收录情况： SCI

摘要： Cylas formicarius is one of the most important pests of sweet potato worldwide, causing considerable ecological and economic damage. This study improved the effect of comprehensive management and understanding of genetic mechanisms by examining the functional genomics of C. formicarius. Using Illumina and PacBio sequencing, this study obtained a chromosome-level genome assembly of adult weevils from lines inbred for 15 generations. The high-quality assembly obtained was 338.84 Mb, with contig and scaffold N50 values of 14.97 and 34.23 Mb, respectively. In total, 157.51 Mb of repeat sequences and 11 907 protein-coding genes were predicted. A total of 337.06 Mb of genomic sequences was located on the 11 chromosomes, accounting for 99.03% of the total length of the associated chromosome. Comparative genomic analysis showed that C. formicarius was sister to Dendroctonus ponderosae, and C. formicarius diverged from D. ponderosae approximately 138.89 million years ago (Mya). Many important gene families expanded in the C. formicarius genome were involved in the detoxification of pesticides, tolerance to cold stress and chemosensory system. To further study the role of odorant-binding proteins (OBPs) in olfactory recognition of C. formicarius, the binding assay results indicated that CforOBP4-6 had strong binding affinities for sex pheromones and other ligands. The high-quality C. formicarius genome provides a valuable resource to reveal the molecular ecological basis, genetic mechanism, and evolutionary process of major agricultural pests; it also offers new ideas and new technologies for ecologically sustainable pest control.