In the silkworm (Bombyx mori), resistance to the Zhenjiang (China) strain of the densonucleosis virus (DNV-Z) is controlled by the recessive gene nsd-Z (non-susceptible to DNV-Z), which is linked to 7 simple-sequence repeat markers. Marker-assisted evaluation and selection of DNV-Z-resistant silkworms were used for predicting DNV-resistance in backcrossed animals. A silkworm race was bred using...

Polyamines are ubiquitous low molecular weight polycationic aliphatic amines involved in diverse cellular processes. Spermidine (Spd), a polyamine, has been proved to be crucial for cell survival in various organisms. Our study reports the effect of Spd on the growth of Bombyx mori. Silkworms showed improved silk gland weight and economic parameters in the fifth instar larval stage when treated...

This study investigates the influence of microclimate factors on uniformity silk thickness and explores application a mechatronic system for optimal control maintenance. As environmental conditions vary daily seasonal basis, managing temperature relative humidity becomes crucial consistent cocoon production. The review delves into significant role in growth development silkworms, highlighting p...

Brachet (1) first called attention to the correlation between tissue RNA content and protein synthesis and to the RNA richness of the silk glands of B. mori. This high RNA content (2), cytological characteristics (3), and synthesis of a specific protein-fibroin-with peculiar properties .and aminoacid composition (4)-suggested an autoradiographic study of the incorporation of radioactive amino a...

Silks produced by spiders and silkworms are charming natural biological materials with highly optimized hierarchical structures and outstanding physicomechanical properties. The superior performance of silks relies on the integration of a unique protein sequence, a distinctive spinning process, and complex hierarchical structures. Silks have been prepared to form a variety of morphologies and a...

The bacmid system of BmMNPV with cysteine protease gene deletion (CPD-BmMNPV bacmid) was constructed using the lambda recombination system. The protease activities of Bombyx mori cells and silkworm larvae infected with this CPD-BmMNPV bacmid were reduced by 94% and 85%, respectively. By using this system, a GFP(uv)-beta1,3-N-acetylglucosaminyltransferase 2 (GFP(uv)-beta3GnT2) fusion protein was...