Non-enzymatic binding of amino acids from silkworm silk glands to soluble proteins from the silk glands of the silkworm, Bombyx mori

1970 ◽  
Vol 16 (4) ◽  
pp. 715-724
Author(s):  
Jadwiga Passent ◽  
P. Szafrański
Keyword(s):  
Amino Acids ◽  
Bombyx Mori ◽  
Soluble Proteins ◽  
Silk Glands ◽  
Silkworm Silk ◽  
Silkworm Bombyx Mori

scholarly journals RNA Polymerase and RNA Synthesis in the Silk Glands of the Silkworm Bombyx mori

1977 ◽  
Vol 72 (2) ◽  
pp. 331-339 ◽  
Author(s):  
S. SRIDHARA ◽  
Marie-madeleine PORTIER ◽  
Jacques DAILLIE
Keyword(s):  
Rna Polymerase ◽  
Bombyx Mori ◽  
Rna Synthesis ◽  
Silk Glands ◽  
Silkworm Bombyx Mori

scholarly journals Efficacy of fungicide ‘Kavach’ against Beauveria bassiana L. in silkworm Bombyx mori L.

2014 ◽  
Vol 6 (1) ◽  
pp. 31-37 ◽  
Author(s):  
V. Rajagopal ◽  
H.L. Ramesh ◽  
V.N. Yogananda Murthy ◽  
K.N. Ninge Gowda
Keyword(s):  
Bombyx Mori ◽  
Beauveria Bassiana ◽  
Protein Level ◽  
Soluble Protein ◽  
Soluble Proteins ◽  
Larval Duration ◽  
Bombyx Mori L ◽  
High Level ◽  
Silkworm Bombyx Mori ◽  
Bio Assay

Silkworm Bombyx mori L. is prone to be attacked by pathogen and more notably Beauveria bassiana L. Bed disinfectant Kavach was inoculated in different dosages (0.2%-1.6%) to IV and V instar silkworms of both bivoltine and cross breeds. Potency of disinfectant was assessed for the parameters such as survivability, larval duration, physiological, chemo and bio-assay tests. It was revealed that, bivoltine (NB4D2) silkworms were highly susceptible to diseases compared to cross breeds (PMxNB4D2). In bivoltine silkworms, survivability was found to be 61.15% at 1.6% of Kavach, when dusted twice during IV and V instar and crossbreed silkworms exhibited better resistance of 63.10% with the same treatments. Kavach treated silkworms showed decreased larval duration compared to control worms. Crossbreed silkworms were capable of maintaining high level of soluble proteins in spite of infection on 3rd day (17.40%), 4th day (20.50%) and 5th day (21.55%) whereas in bivoltine silkworms soluble protein level was brought down on 3rd day (19.30%), 4th day (22.40%) and 5th day (23.40%). Total soluble sugarsvaried from third day till fifth day in both the races. Kavach dusted twice at 1% proved to be very useful in the improvement of various commercial cocoons characters.

The increase of amino acids induces the expression of vitellogenin after spinning in the silkworm Bombyx mori

2019 ◽  
Vol 118 ◽  
pp. 103913 ◽  
Author(s):  
Hongling Liu ◽  
Ying Lin ◽  
Jianjian Gu ◽  
Yang Ruan ◽  
Guanwang Shen ◽  
...  
Keyword(s):  
Amino Acids ◽  
Bombyx Mori ◽  
Silkworm Bombyx Mori

TREHALASE ACTIVITY IN THE SILK GLANDS OF THE SILKWORM, BOMBYX MORI (LEPIDOPTERA: BOMBYCIDAE)

1975 ◽  
Vol 107 (12) ◽  
pp. 1311-1314 ◽  
Author(s):  
Shuya Shimada
Keyword(s):  
Bombyx Mori ◽  
Divalent Cations ◽  
Silk Gland ◽  
Trehalase Activity ◽  
Gland Cells ◽  
Silk Glands ◽  
Tunica Propria ◽  
Silkworm Bombyx Mori ◽  
Cu And Zn ◽  
Tunica Intima

Abstract(1) Crude extracts prepared from the silk glands of the silkworm, Bombyx mori L. contain trehalase activity. (2) Trehalase in the silk glands has a pH of 5.5 and a Km of 0.71 mM. The activity of the enzyme is inhibited by divalent cations such as Mn, Cu, and Zn. (3) By histochemical methods, it is shown that trehalase is localized in the periphery of the silk gland cells, especially in the tunica propria and tunica intima. (4) Trehalase activity is low in fifth instar and increases greatly in spinning stages, after which the activity decreases.

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