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Macromolecular synthesis in wing discs of Spodoptera mauritia Boisd: effects of a juvenile hormone analogue.
Indian J Exp Biol ; 2003 Feb; 41(2): 167-70
Artículo en Inglés | IMSEAR | ID: sea-60027
ABSTRACT
Last instar larvae of S. mauritia treated topically on day 0, day 1, day 2 and day 3 with a daily (dose of 25 microg juvenile hormone analogue (JHA) moulted into supernumerary larvae. The imaginal discs of the supernumerary larvae especially those of mouthparts and thoracic appendages showed pupal characteristics. However the wing discs, which showed only partial differentiation, were uneverted and highly tanned. In an effort to provide an explanation to this anomaly the RNA, DNA and protein profile in the wing discs of supernumerary larvae were studied. Quantitative analysis of DNA, RNA and protein showed a considerable increase in the amount of DNA and protein and a decline in RNA level. SDS-PAGE analysis of wing disc proteins of JHA treated larvae showed a reduction in the expression of many major proteins that were predominant in the wing discs of control larvae. The results suggest that JHA induced inactivation of genes involved in the synthesis of proteins needed for evagination process may be responsible for the formation of uneverted, partially differentiated pupal wing discs in supernumerary larvae.
Asunto(s)
Texto completo: Disponible Índice: IMSEAR (Asia Sudoriental) Asunto principal: ADN / ARN / Spodoptera / Proteínas de Insectos / Sustancias Macromoleculares / Ácidos Grasos Insaturados / Hormonas Juveniles / Animales Idioma: Inglés Revista: Indian J Exp Biol Año: 2003 Tipo del documento: Artículo

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Texto completo: Disponible Índice: IMSEAR (Asia Sudoriental) Asunto principal: ADN / ARN / Spodoptera / Proteínas de Insectos / Sustancias Macromoleculares / Ácidos Grasos Insaturados / Hormonas Juveniles / Animales Idioma: Inglés Revista: Indian J Exp Biol Año: 2003 Tipo del documento: Artículo