Project description:Loss of flight is recurrently observed in flying species and markedly abates threats to human health and agricultural production posed by flying pests. However, our understanding of the flight organs involved remains limited. The silkworm Bombyx mori, a lepidopteran model insect, loses flight most recently, while the Bombyx mandarina capable of flight, therefore it is a good model for studying flight loss. Here, we represent the first description of the spatiotemporal architecture of Bombyx flight organs. We demonstrated that the weakened cellular function of NFDCs and FECs determining the flight energy and wing vein and flight muscle development largely result in flight loss in B. mori, and single-cell analyses of cotton bollworm flight organs and RNA interference (RNAi) of key genes validated these findings, and the cellular and molecular determinants of flight may be conserved across Lepidoptera. These findings will contribute to the understanding of flight loss encountered in flying species.
Project description:Loss of flight is recurrently observed in flying species and markedly abates threats to human health and agricultural production posed by flying pests. However, our understanding of the flight organs involved remains limited. The silkworm Bombyx mori, a lepidopteran model insect, loses flight most recently, while the Bombyx mandarina capable of flight, therefore it is a good model for studying flight loss. Here, we represent the first description of the spatiotemporal architecture of Bombyx flight organs. We demonstrated that the weakened cellular function of NFDCs and FECs determining the flight energy and wing vein and flight muscle development largely result in flight loss in B. mori, and single-cell analyses of cotton bollworm flight organs and RNA interference (RNAi) of key genes validated these findings, and the cellular and molecular determinants of flight may be conserved across Lepidoptera. These findings will contribute to the understanding of flight loss encountered in flying species.
Project description:Loss of flight is recurrently observed in flying species and markedly abates threats to human health and agricultural production posed by flying pests. However, our understanding of the flight organs involved remains limited. The silkworm Bombyx mori, a lepidopteran model insect, loses flight most recently, while the Bombyx mandarina capable of flight, therefore it is a good model for studying flight loss. Here, we represent the first description of the spatiotemporal architecture of Bombyx flight organs. We demonstrated that the weakened cellular function of NFDCs and FECs determining the flight energy and wing vein and flight muscle development largely result in flight loss in B. mori, and single-cell analyses of cotton bollworm flight organs and RNA interference (RNAi) of key genes validated these findings, and the cellular and molecular determinants of flight may be conserved across Lepidoptera. These findings will contribute to the understanding of flight loss encountered in flying species.
Project description:Influence of temperature variation on gene expression and cocoon production in Bombyx mori Linnaeus, 1758 (Lepidoptera: Bombycidae)
Project description:Bombyx mori is one of the key lepidopteran model species, and is economically important for silk production and proteinaceous drug expression. Baculovirus and insect host are important natural biological models for studying host-pathogen interactions. The impact of Bombyx mori nucleopolyhedrovirus (BmNPV) infection on the proteome and acetylome of Bombyx mori ovarian (BmN) cells were explored to facilitate a better understanding of infection-driven interactions between BmNPV and host in vitro. The proteome and acetylome were profiled through 6-plex Tandem mass tag (TMT) labelling-based quantitative proteomics. Totally, 4,194 host proteins were quantified, of which 33 were up-regulated and 47 were down-regulated in BmN cells at 36 h post-infection. Based on the proteome, quantifiable differential Kac proteins were identified and functionally annotated to gene expression regulation, energy metabolism, substance synthesis and metabolism after BmNPV infection. Altogether, 644 Kac sites in 431 host proteins and 39 Kac sites in 22 viral proteins were identified and quantified in infected BmN cells. Our study demonstrated that BmNPV infection globally impacts the proteome and acetylome of BmN cells. The viral proteins are also acetylated by the host acetyltransferase. Protein acetylation is essential for cellular self-regulation and response to virus infection. This study provides new insights for understanding the host-virus interaction mechanisms, and the role of acetylation in BmN cellular response to viral infection.
Project description:To identify the cuticular proteins in developing wing scales of Bombyx mori, we performed LC-MS/MS analysis of dissoliving developing wing scales from Bombyx mori