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The present study was conducted to clarify the regulatory mechanism of cuticular protein genes of Bombyx mori expressed in wing discs in the prepupal stage. BHR3, BHR4, E74A, and ßFTZ-F1 were successively expressed in wing discs at the pre-pupal stage. BHR3 showed different ecdysone responsiveness from other ecdysone-responsive transcription factors (ERTFs) and was induced by ecdysone addition but...
The egg stage is an important stage in the silkworm (Bombyx mori) life cycle. Normal silkworm eggs are usually short, elliptical, and laterally flattened, with a sometimes hollowed surface on the lateral side. However, the eggs laid by homozygous recessive “Ming” lethal egg mutants (l-e m ) lose water and become concaved around 1h, ultimately exhibiting a triangular shape on the egg surfaces...
The “Ming” lethal egg mutant (l-e m ) is a vitelline membrane mutant in silkworm, Bombyx mori. The eggs laid by the l-e m mutant lose water, ultimately causing death within an hour. Previous studies have shown that the deletion of BmEP80 is responsible for the l-e m mutation in silkworm, B. mori. In the current study, digital gene expression (DGE) was performed to investigate...
Heterochromatin protein 1 (HP1) is an evolutionarily conserved protein across different eukaryotic species, and is crucial in the establishment and maintenance of heterochromatin. HP1 proteins have two distinct functional domains, an N-terminal chromodomain (CD) and a C-terminal chromoshadow domain (CSD), which are required for the selective binding of HP1 proteins to modified histones. During our...
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