Novaluron impairs the silk gland and productive performance of silkworm Bombyx mori (Lepidoptera: Bombycidae) larvae

Santorum, Marilucia; Brancalhão, Rose Meire Costa; Reis, Gustavo Henrique dos; Santos, Daniela Carvalho dos

doi:10.1016/j.chemosphere.2019.124697

Cited by 8 publications

(2 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We found that when S. frugiperda were fed azadirachtin for 72 h, their spinning rate decreased, which suggests that azadirachtin is able to interfere with their spitting ability by damaging the silk glands. When insect silk glands are su ciently damaged, their ability to synthesize silk protein to form silk threads will be weakened, and the output and quality of the silk produced will decrease (Santorum et al 2020).…”

Section: Discussionmentioning

confidence: 99%

Azadirachtin inhibits the development and metabolism of the silk glands of Spodoptera frugiperda and affects spinning behavior

Zhao

Zheng

Qin

et al. 2022

Pest Management Science

View full text Add to dashboard Cite

Spodoptera frugiperda is a major agricultural pest, and the 1st -3rd instar S. frugiperda have spinning behaviour and can drift to adjacent plants with the help of the wind. The present study found that azadirachtin can affect this behaviour, and the mechanism by which azadirachtin affects the spinning behaviour of S. frugiperda has been studied. In this study, the 3rd instar larvae were exposed to azadirachtin, and the pathological changes in the silk glands of S. frugiperda and the differences in their metabolites were analysed by pathological sectioning, transmission electron microscopy, metabolomics and other experimental methods. The results showed that azadirachtin can affect the silk gland of S. frugiperda. After 48 h of treatment with azadirachtin, the silk gland lumen of S. frugiperda appeared vacuolated, and KEGG showed that 31 different metabolites were identi ed, of which 12 were upregulated and 19 were downregulated. These metabolites were enriched in 15 different metabolic pathways, which pathways indicated that the silk gland of S. frugiperda was closely related to the formation of fatty acids and to energy metabolism in the process of silk formation. This research can further explain the spinning mechanism of insects and provide a research basis for determining the spinning, cocooning, and transfer damage mechanisms of many agricultural and forestry pests. Key MessageThe 1st -3rd instar Spodoptera frugiperda can spit and drift to neighbouring plants.Azadirachtin causes a decrease in the amino acids histidine, glycine, and leucine in the silk glands of Spodoptera frugiperda.Azadirachtin causes insect silk to break more easily.Feeding with azadirachtin for 72 h reduces Spodoptera frugiperda spinning.Azadirachtin can affect the development of the silk glands of Spodoptera frugiperda and thus affect silking behaviour.

show abstract

Section: Discussionmentioning

confidence: 99%

Azadirachtin inhibits the development and metabolism of the silk glands of Spodoptera frugiperda and affects spinning behavior

Zhao

Zheng

Qin

et al. 2022

Pest Management Science

View full text Add to dashboard Cite

show abstract

“…The silk gland mainly comprises the outer membrane, glandular cell layer and inner membrane. It is understood that the quantity of membrane vacuolization can be used to assess the degree of structural damage to the silk gland [34], where the vacuole is the structure surrounded by the epidermoid cell of the membrane [35]. According to Figure 3a,b, the silk gland of the control group had a complete morphology and the glandular cell layer was arranged neatly and densely.…”

Section: Evaluation Of the Safety Of Cds For Silkwormsmentioning

confidence: 99%

Microwave-Assisted Synthesis of Luminescent Carbonaceous Nanoparticles as Silkworm Feed for Fabricating Fluorescent Silkworm Silk

Chen

Zhong

et al. 2022

Coatings

View full text Add to dashboard Cite

In biomedical engineering, optics, and photonics, fluorescent silkworm silk has many potential applications, but its complex preparation process and the environmental pollution of corresponding chemical dyeing methods hinder its development. Herein, we provide a green and effective method for fabricating fluorescent silkworm silk with enhanced mechanical properties. Citric acid and urea were selected as raw materials for synthesizing carbon dots (CDs), which were applied as additives of silkworm feed to produce fluorescent silkworm silks by microwave-assisted methods. The results showed that a diet of mulberry leaf with 0.5 wt% CDs was safe for silkworms and did not affect silk yield. CDs rapidly entered silkworms and accumulated in their blood and silk glands. After feeding for 90 min, the silk gland fluorescence appeared prominent. Compared with ordinary silk, the highest elongation at break of the CD-modified silk was 22.24%, and the breaking strength was 28.07 MPa, which were increases of 5.05 and 22.84%, respectively. The CD-modified silk displayed intrinsic blue fluorescence when exposed to a 405 nm laser, exhibited no cytotoxic effect on L929 cells and had excellent cell adhesion. The strategy proposed in this work is not only environmentally friendly but can also produce high-quality fluorescent silk on a large scale.

show abstract

Ortho-Vanillin Ameliorates Spinetoram-Induced Oxidative Stress in the Silkworm Bombyx mori: Biochemical and In Silico Insights

Ashraf,

Agrawal,

Singh

et al. 2024

Neotrop Entomol

View full text Add to dashboard Cite

Novaluron impairs the silk gland and productive performance of silkworm Bombyx mori (Lepidoptera: Bombycidae) larvae

Cited by 8 publications

References 51 publications

Azadirachtin inhibits the development and metabolism of the silk glands of Spodoptera frugiperda and affects spinning behavior

Azadirachtin inhibits the development and metabolism of the silk glands of Spodoptera frugiperda and affects spinning behavior

Microwave-Assisted Synthesis of Luminescent Carbonaceous Nanoparticles as Silkworm Feed for Fabricating Fluorescent Silkworm Silk

Ortho-Vanillin Ameliorates Spinetoram-Induced Oxidative Stress in the Silkworm Bombyx mori: Biochemical and In Silico Insights

Contact Info

Product

Resources

About