Hormonal Regulation and Cell Competence in Insect Metamorphosis
نویسندگان
چکیده
منابع مشابه
A novel putative insect chitinase with multiple catalytic domains: hormonal regulation during metamorphosis.
We have used differential display to identify genes that are regulated by juvenile hormone in the epidermis of the beetle Tenebrio molitor. One of the genes encodes T. molitor chitinase 5 (TmChit5), a chitinase possessing an unusual structure. Sequence analysis of TmChit5 identified five 'chitinase units' of approx. 480 amino acids with similarity to chitinase family 18. These units are separat...
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Manduca sexta has been studied extensively and shown to be primarily under the control of juvenile hormone (JH) and ecdysteroids (reviewed by Nijhout, 1994; Gäde et al., 1997). During larva–larva molts, the release of ecdysteroids signals the end of the feeding stage and the initiation of the molting process, and, in the presence of JH, growth is directed to the expression of larval characteris...
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The presence of a "status quo" hormone like JH has not been found in ticks. The most advanced understanding of tick endocrinology is associated with female reproduction, where the sequence of the first messages for storage proteins (vitellogenin (Vg) and carrier protein), the Vg receptor, and male peptidic pheromones were recently reported. The current consensus model suggests that ecdysteroids...
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1. The cell-free blood of the Cecropia silkworm produces a maximum of nine bands of antigen-antibody precipitate when reacted in antiserum-agar tests with antisera prepared by injecting Cecropia extracts into rabbits. The blood antigens producing these bands of precipitate have the properties of proteins in that they are non-dialyzable, labile at 75 degrees C., and salted out by 75 per cent sat...
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Corticosteroids, the primary circulating vertebrate stress hormones, are known to potentiate the actions of thyroid hormone in amphibian metamorphosis. Environmental modulation of the production of stress hormones may be one way that tadpoles respond to variation in their larval habitat, and thus control the timing of metamorphosis. Thyroid hormone and corticosteroids act through structurally s...
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ژورنال
عنوان ژورنال: Seibutsu Butsuri
سال: 1966
ISSN: 0582-4052,1347-4219
DOI: 10.2142/biophys.6.174