Chromosome-Level Genome Assembly Reveals Significant Gene Expansion in the Toll and IMD Signaling Pathways of Dendrolimus kikuchii

A high-quality genome is of significant value when seeking to control forest pests such as Dendrolimus kikuchii, a destructive member of the order Lepidoptera that is widespread in China. Herein, a high quality, chromosome-level reference genome for D. kikuchii based on Nanopore, Pacbio HiFi sequenc...

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Autores principales: Jielong Zhou, Peifu Wu, Zhongping Xiong, Naiyong Liu, Ning Zhao, Mei Ji, Yu Qiu, Bin Yang
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Publicado: Frontiers Media S.A. 2021
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Acceso en línea:https://doaj.org/article/9d75ccd72e0f413e84bbc49a6f0186fa
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spelling oai:doaj.org-article:9d75ccd72e0f413e84bbc49a6f0186fa2021-11-30T14:30:24ZChromosome-Level Genome Assembly Reveals Significant Gene Expansion in the Toll and IMD Signaling Pathways of Dendrolimus kikuchii1664-802110.3389/fgene.2021.728418https://doaj.org/article/9d75ccd72e0f413e84bbc49a6f0186fa2021-10-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fgene.2021.728418/fullhttps://doaj.org/toc/1664-8021A high-quality genome is of significant value when seeking to control forest pests such as Dendrolimus kikuchii, a destructive member of the order Lepidoptera that is widespread in China. Herein, a high quality, chromosome-level reference genome for D. kikuchii based on Nanopore, Pacbio HiFi sequencing and the Hi-C capture system is presented. Overall, a final genome assembly of 705.51 Mb with contig and scaffold N50 values of 20.89 and 24.73 Mb, respectively, was obtained. Of these contigs, 95.89% had unique locations on 29 chromosomes. In silico analysis revealed that the genome contained 15,323 protein-coding genes and 63.44% repetitive sequences. Phylogenetic analyses indicated that D. kikuchii may diverged from the common ancestor of Thaumetopoea. Pityocampa, Thaumetopoea ni, Heliothis virescens, Hyphantria armigera, Spodoptera frugiperda, and Spodoptera litura approximately 122.05 million years ago. Many gene families were expanded in the D. kikuchii genome, particularly those of the Toll and IMD signaling pathway, which included 10 genes in peptidoglycan recognition protein, 19 genes in MODSP, and 11 genes in Toll. The findings from this study will help to elucidate the mechanisms involved in protection of D. kikuchii against foreign substances and pathogens, and may highlight a potential channel to control this pest.Jielong ZhouPeifu WuZhongping XiongNaiyong LiuNing ZhaoMei JiYu QiuBin YangFrontiers Media S.A.articlelepidopteraDendrolimus kikuchiinanoporeHi-Cchromosome-level genomegene expansionGeneticsQH426-470ENFrontiers in Genetics, Vol 12 (2021)
institution DOAJ
collection DOAJ
language EN
topic lepidoptera
Dendrolimus kikuchii
nanopore
Hi-C
chromosome-level genome
gene expansion
Genetics
QH426-470
spellingShingle lepidoptera
Dendrolimus kikuchii
nanopore
Hi-C
chromosome-level genome
gene expansion
Genetics
QH426-470
Jielong Zhou
Peifu Wu
Zhongping Xiong
Naiyong Liu
Ning Zhao
Mei Ji
Yu Qiu
Bin Yang
Chromosome-Level Genome Assembly Reveals Significant Gene Expansion in the Toll and IMD Signaling Pathways of Dendrolimus kikuchii
description A high-quality genome is of significant value when seeking to control forest pests such as Dendrolimus kikuchii, a destructive member of the order Lepidoptera that is widespread in China. Herein, a high quality, chromosome-level reference genome for D. kikuchii based on Nanopore, Pacbio HiFi sequencing and the Hi-C capture system is presented. Overall, a final genome assembly of 705.51 Mb with contig and scaffold N50 values of 20.89 and 24.73 Mb, respectively, was obtained. Of these contigs, 95.89% had unique locations on 29 chromosomes. In silico analysis revealed that the genome contained 15,323 protein-coding genes and 63.44% repetitive sequences. Phylogenetic analyses indicated that D. kikuchii may diverged from the common ancestor of Thaumetopoea. Pityocampa, Thaumetopoea ni, Heliothis virescens, Hyphantria armigera, Spodoptera frugiperda, and Spodoptera litura approximately 122.05 million years ago. Many gene families were expanded in the D. kikuchii genome, particularly those of the Toll and IMD signaling pathway, which included 10 genes in peptidoglycan recognition protein, 19 genes in MODSP, and 11 genes in Toll. The findings from this study will help to elucidate the mechanisms involved in protection of D. kikuchii against foreign substances and pathogens, and may highlight a potential channel to control this pest.
format article
author Jielong Zhou
Peifu Wu
Zhongping Xiong
Naiyong Liu
Ning Zhao
Mei Ji
Yu Qiu
Bin Yang
author_facet Jielong Zhou
Peifu Wu
Zhongping Xiong
Naiyong Liu
Ning Zhao
Mei Ji
Yu Qiu
Bin Yang
author_sort Jielong Zhou
title Chromosome-Level Genome Assembly Reveals Significant Gene Expansion in the Toll and IMD Signaling Pathways of Dendrolimus kikuchii
title_short Chromosome-Level Genome Assembly Reveals Significant Gene Expansion in the Toll and IMD Signaling Pathways of Dendrolimus kikuchii
title_full Chromosome-Level Genome Assembly Reveals Significant Gene Expansion in the Toll and IMD Signaling Pathways of Dendrolimus kikuchii
title_fullStr Chromosome-Level Genome Assembly Reveals Significant Gene Expansion in the Toll and IMD Signaling Pathways of Dendrolimus kikuchii
title_full_unstemmed Chromosome-Level Genome Assembly Reveals Significant Gene Expansion in the Toll and IMD Signaling Pathways of Dendrolimus kikuchii
title_sort chromosome-level genome assembly reveals significant gene expansion in the toll and imd signaling pathways of dendrolimus kikuchii
publisher Frontiers Media S.A.
publishDate 2021
url https://doaj.org/article/9d75ccd72e0f413e84bbc49a6f0186fa
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