We report on secretion of phospholipase A 2 (PLA 2 ) by in vitro preparations of midguts isolated from tobacco hornworms, Manduca sexta. This enzyme is responsible for hydrolysis of fatty acids from the sn-2 position of phospholipids, a necessary step in fatty acid absorption. The in vitro midgut pr
Midgut mitochondrial transhydrogenase in wandering stage larvae of the tobacco hornworm, Manduca sexta
โ Scribed by Kurt P. Vandock; Stan L. Smith; Carmen F. Fioravanti
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 219 KB
- Volume
- 69
- Category
- Article
- ISSN
- 0739-4462
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During the last larval instar of Manduca sexta (tobacco hornworm), the insect enters the wandering phase, in which the animal ceases feeding and the structural reorganization of the midgut begins. Midgut metabolism and ion transport in midguts of feeding and wandering (day 5) fifth-instar tobacco ho
Parasitism of fifth instar Manduca sexta larvae by the gregarious parasitoid Cotesia congregata prevented normal storage of tyrosine in the hemolymph, whereas total tyrosine levels increased over eight times in the hemolymph of unparasitized larvae by day 4. Tyrosine glucoside, the hemolymph storage