Comparative mitochondrial genomes provide new insights into the true wild progenitor and origin of domestic silkworm Bombyx mori

Chen, Dong-Bin; Zhang, Rusong; Bian, Hai-Xu; Qun, LI; Xia, Run-Xi; Li, Yuping; Liu, Yanping; Lü, Cheng

doi:10.1016/j.ijbiomac.2019.03.002

Cited by 16 publications

(27 citation statements)

References 24 publications

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“…The wild silkworm Bombyx mandarina is the wild ancestor of the domestic silkworm Bombyx mori, but there remain single-or multi-geographical origin hypothesis of domestication. Chen DB revealed that Chinese B. mandarina populations represented two genetically distinctive subtypes in line with the geographic boundary of northern and southern China based on the mitogenome analysis, and the true wild ancestor of domestic silkworm is northern Chinese Bombyx mandarina, rather than southern Chinese Bombyx mandarina (Chen et al, 2019). Our work supported this notion, and implied that the Qin-ba mountain area could be one geography region of the origin of domestic silkworm.…”

Section: Discussionsupporting

confidence: 71%

Genome Survey and Mitochondrial Genome Analysis of Wild Silkworm, <i>Bombyx mandarina</i>

Ma¹,

Wang²,

Qu³

2020

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Aimed to lay references for the whole genome sequencing and provide basic data for the genetic relationships between Bombyx mandarina and Bombyx mori, the genome of Bombyx mandarina is investigated and the mitochondrial genome is analyzed. Using the Illumina NovaSeq pair-end sequencing platform, a female Bombyx mandarina was sequenced, the genome size, heterozygosity and GC contend have been estimated based on the genomic survey analysis, and the genome of wild silkworm has been pre-assembled. Using the sequencing data, the mitochondrial genome sequences in the genome were extracted and assembled directly. As results, 25.8 GB clean data obtained, the estimated genome size of Bombyx mandarina is 456.5 Mb, the heterozygosity rate is 1.94%. After preliminary assembly, the scaffold N50 is 1 792 bp, scaffold number is 737055, contig N50 is 587 bp, contig number is 1477268. As assembly and annotation, the mitochondrial genome of wild silkworm is 15 662 bp, a total of 37 genes were arranged in the mitochondrial genome, which did not have a gene rearrangement. According the phylogenetic tree of mitochondrial genome, wild silkworm could be divided into north or south group according to the geographical source. Subgroup of Wild silkworm from the North China has the closest genetical relationship with the domestic silkworm. Since the genome of Qin-ba wild silkworm belong to the complex genome, integrating the second-, the third-generation sequencing and Hi-C technology could be helpful to obtain high quality genomic of Bombyx mandarina. This study also supports the contention that domestic of silkworm descended from the northern of China, and implied that the Qin-ba mountain area could be one of the original regions of domestic silkworm.

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Section: Discussionsupporting

confidence: 71%

Genome Survey and Mitochondrial Genome Analysis of Wild Silkworm, <i>Bombyx mandarina</i>

Ma¹,

Wang²,

Qu³

2020

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“…However, a signal peptide is predicted from the orthologous B. mandarina gene (Fig. 4), the species from which B. mori was domesticated about 5,000 years ago (Sun et al, 2012;Chen et al, 2019). There are two significant differences between the two genes.…”

Section: Resultsmentioning

confidence: 99%

Most lepidopteran neuroparsin genes seem functional, but in some domesticated silkworm strains it has a fatal mutation

Veenstra

2020

General and Comparative Endocrinology

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“…; Chen et al . ). The Chinese oak silkworm is also used as a source of insect food (larva, pupa and moth) and cosmetics (Liu et al .…”

Section: Introductionmentioning

confidence: 97%

“…Chinese oak silkworm, Antheraea pernyi (Lepidoptera: Saturniidae), and mulberry silkworm, Bombyx mori (Lepidoptera: Bombycoidea), are well-known economic insects, commercially cultivated in China, Japan, India, Uzbekistan, Brazil, Thailand, Vietnam, Ukraine, Russia, Iran, France, Italy and Korea for silk production (Sakurai et al 2004;Gandhi et al 2009;Chen et al 2019). The Chinese oak silkworm is also used as a source of insect food (larva, pupa and moth) and cosmetics (Liu et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Safety evaluation of four entomopathogenic nematode species against two silkworm species

Dong

Wang

et al. 2020

Entomological Research

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Chinese oak silkworm (Antheraea pernyi) and mulberry silkworm (Bombyx mori) are economically important insects used for silk production and food resource. Entomopathogenic nematodes (EPNs) from the families of Steinernematidae and Heterorhabditidae are beneficial organisms currently considered in biological control. In this paper, we evaluated survival of two silkworm species exposed to four Steinernema species which are widely applied in pest control. The results showed that among four Steinernema species, S. bicornutum and S. feltiae did not have an effect on the larval survival to the two silkworm species, whereas S. carpocapsae and S. glaseri did have an effect. Each Steinernema species poses no threat to hatchability of eggs, pupation rate, larval durations and cocoon shell ratio.

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Comparative mitochondrial genomes provide new insights into the true wild progenitor and origin of domestic silkworm Bombyx mori

Cited by 16 publications

References 24 publications

Genome Survey and Mitochondrial Genome Analysis of Wild Silkworm, <i>Bombyx mandarina</i>

Genome Survey and Mitochondrial Genome Analysis of Wild Silkworm, <i>Bombyx mandarina</i>

Most lepidopteran neuroparsin genes seem functional, but in some domesticated silkworm strains it has a fatal mutation

Safety evaluation of four entomopathogenic nematode species against two silkworm species

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