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Glutamine synthetase activity during embryonic and larval development of the silkworm Bombyx mori L. and role of a JH analogue
Author(s) -
SESHACHALAM R. V.,
SUBRAMANYAM M. V. V.,
KRISHNAMOORTHY R. V.
Publication year - 1992
Publication title -
physiological entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.693
H-Index - 57
eISSN - 1365-3032
pISSN - 0307-6962
DOI - 10.1111/j.1365-3032.1992.tb01022.x
Subject(s) - biology , bombyx mori , diapause , glutamine synthetase , midgut , glutamine , hemolymph , larva , enzyme , embryogenesis , biochemistry , botany , amino acid , gene
. Silkworm eggs of diapause nature were chilled or treated with hydrochloric acid. Glutamine synthetase activity in such treated eggs was present soon after the treatment, whereas in non‐diapause eggs it was not detectable until 24 h after the start of development. During larval life, the glutamine synthetase was found to be absent in midgut tissue. Topical application of a JH analogue resulted in extened larval duration and it reduced glutamine synthetase activity initially, but in the latter part of development the activity was higher.