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A chromosome-level genome assembly of the orange wheat blossom midge, Sitodiplosis mosellana Gehin (Diptera: Cecidomyiidae) provides insights into the evolution of a detoxification system

文献类型： 外文期刊

作者： Gong, Zhongjun 1 ; Li, Tong 1 ; Miao, Jin 1 ; Duan, Yun 1 ; Jiang, Yueli 1 ; Li, Huiling 1 ; Guo, Pei 1 ; Wang, Xueqin 1 ; Zhang, Jing 1 ; Wu, Yuqing 1 ;

作者机构： 1.Henan Acad Agr Sci, Inst Plant Protect, Key Lab Crop Pest Control Henan Prov,Minist Agr P, Key Lab Crop Integrated Pest Management Southern, Zhengzhou 450002, Peoples R China

关键词： chromosome-level genome; Hi-C; Sitodiplosis mosellana; comparative genomics; detoxification

期刊名称：G3-GENES GENOMES GENETICS （ 影响因子：3.542； 五年影响因子：3.545 ）

ISSN： 2160-1836

年卷期：

页码：

收录情况： SCI

摘要： The orange wheat blossom midge Sitodiplosis mosellana Gehin (Diptera: Cecidomyiidae), an economically important pest, has caused serious yield losses in most wheat-growing areas worldwide in the past half-century. A high-quality chromosome-level genome for S. mosellana was assembled using PacBio long read, Illumina short read, and Hi-C sequencing technologies. The final genome assembly was 180.69 Mb, with contig and scaffold N50 sizes of 998.71 kb and 44.56 Mb, respectively. Hi-C scaffolding reliably anchored 4 pseudochromosomes, accounting for 99.67% of the assembled genome. In total, 12,269 protein-coding genes were predicted, of which 91% were functionally annotated. Phylogenetic analysis indicated that S. mosellana and its close relative, the swede midge Contarinia nasturtii, diverged about 32.7 MYA. The S. mosellana genome showed high chromosomal synteny with the genome of Drosophila melanogaster and Anopheles gambiae. The key gene families involved in the detoxification of plant secondary chemistry were analyzed. The high-quality S. mosellana genome data will provide an invaluable resource for research in a broad range of areas, including the biology, ecology, genetics, and evolution of midges, as well as insect-plant interactions and coevolution.

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