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从菲律宾采集的棉铃虫(鳞翅目:草螟科)的核基因组组装

Nuclear genome assembly of Leucinodes orbonalis (Lepidoptera: Crambidae) collected from the Philippines.

作者信息

Despabiladeras Joshua B, Punzalan Jimuel Adrian M, Bautista Ma Anita M

机构信息

Functional Genomics Laboratory, National Institute of Molecular Biology and Biotechnology, College of Science, University of the Philippines, Diliman, Quezon City, Metro Manila, Philippines.

出版信息

J Insect Sci. 2025 May 9;25(3). doi: 10.1093/jisesa/ieaf066.

Abstract

The eggplant fruit and shoot borer (Leucinodes orbonalis Guenée) is a devastating lepidopteran pest of the eggplant (Solanum melongena L.), causing significant economic losses. Reference genomes aid in understanding insect pest biology and can guide pest management programs. For eggplant fruit and shoot borer, however, genomic resources are scarce; hence, this study presents an annotated genome assembly of the Philippine eggplant fruit and shoot borer genome using Illumina short reads. The 480,399,388 bp long assembly contained 31,568 contigs with an N50 of 204,698 bp and a BUSCO score of 96.5%. Annotation of repeat elements indicates that the eggplant fruit and shoot borer genome comprises 38.50% interspersed repeats, which are mostly unclassified repeats. Functional RNA annotation revealed 1,310 functional RNA genes consisting primarily of tRNAs, rRNAs, snRNAs, and miRNAs. Protein structural annotation predicted a total of 12,671 genes. Annotation using a Cluster of Orthologous groups indicates proteins belonging to group S (unknown), group T (signal transduction), group O (posttranslational modification), and group K (transcription). Of the proteins belonging to group S, PFAM analysis revealed proteins containing chitin, juvenile hormone, odorant and pheromone-binding protein domains, and zinc finger motifs. Further analysis of the predicted proteins indicates that the EFSB possesses conserved biochemical machineries in insect chemosensation, detoxification, and hormone biosynthesis and reception. Variation profiling, on the other hand, detected 11,103,848 SNPs and 3,031,155 indels possibly occurring in Philippine eggplant fruit and shoot borer. Overall, the genome assembly and annotation generated from this study contribute to establishing genome references, and may aid in understanding the EFSB through future studies aimed at its effective control.

摘要

茄子果实和嫩梢蛀虫(Leucinodes orbonalis Guenée)是茄子(Solanum melongena L.)的一种毁灭性鳞翅目害虫,会造成重大经济损失。参考基因组有助于理解害虫生物学特性,并可为害虫管理计划提供指导。然而,对于茄子果实和嫩梢蛀虫来说,基因组资源稀缺;因此,本研究利用Illumina短读长测序技术,展示了菲律宾茄子果实和嫩梢蛀虫基因组的注释基因组组装结果。这个长度为480,399,388 bp的组装序列包含31,568个重叠群,N50为204,698 bp,BUSCO得分96.5%。重复元件注释表明,茄子果实和嫩梢蛀虫基因组包含38.50%的散在重复序列,其中大多是未分类的重复序列。功能性RNA注释显示有1310个功能性RNA基因,主要由tRNA、rRNA、snRNA和miRNA组成。蛋白质结构注释预测共有12,671个基因。使用直系同源簇进行注释表明,蛋白质属于S组(未知)、T组(信号转导)、O组(翻译后修饰)和K组(转录)。在属于S组的蛋白质中,PFAM分析揭示了含有几丁质、保幼激素、气味剂和信息素结合蛋白结构域以及锌指基序的蛋白质。对预测蛋白质的进一步分析表明,茄子果实和嫩梢蛀虫在昆虫化学感受、解毒以及激素生物合成和接收方面拥有保守的生化机制。另一方面,变异图谱检测到菲律宾茄子果实和嫩梢蛀虫可能出现11,103,848个单核苷酸多态性(SNP)和3,031,155个插入缺失(indel)。总体而言,本研究生成的基因组组装和注释有助于建立基因组参考,并可能通过未来旨在有效控制茄子果实和嫩梢蛀虫的研究,帮助人们了解该害虫。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/dbfd/12205365/aaadeaa8b9a4/ieaf066_fig1.jpg

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