Manduca Sexta
Mostrando 1-12 de 131 artigos, teses e dissertações.
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1. Interaction of lipophorin with Rhodnius prolixus oocytes: biochemical properties and the importance of blood feeding
Lipophorin (Lp) is the main haemolymphatic lipoprotein in insects and transports lipids between different organs. In adult females, lipophorin delivers lipids to growing oocytes. In this study, the interaction of this lipoprotein with the ovaries of Rhodnius prolixus was characterised using an oocyte membrane preparation and purified radiolabelled Lp (125I-L
Mem. Inst. Oswaldo Cruz. Publicado em: 2013-11
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2. História natural da interação entre Meteorus sp. Haliday, 1835 (Hymenoptera: Braconidae) e seu hiperparasitoide Toxeumella albipes Girault, 1913 (Hymenoptera: Pteromalidae)
Alguns parasitoides constroem um agregado de casulos que fica pendurado no corpo do hospedeiro até a emergência dos adultos, o que é uma vantagem contra o ataque de predadores que vasculham a vegetação em busca de presas. No entanto, tal comportamento não é eficiente contra o ataque de hiperparasitoides. Este estudo registra a interação entre a laga
Brazilian Journal of Biology. Publicado em: 2012-02
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3. Caracterização de uma nova toxina Cry9Bb de Bacillus thuringiensis.
2007
Brasília. Publicado em: 2011
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4. Investigation of a novel Bacillus thuringiensis toxin
The aim of the present work was to investigate the toxicity, biochemical characteristics, gene and protein contents, and the mechanism of action of toxins from the Brazilian Bacillus thuringiensis (Bt) strain S725. This strain has been reported as toxic against the cotton boll weevil (Anthonomus grandis), a severe pest of cotton crops in America, which is co
Publicado em: 2006
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5. Molecular Interactions between the Specialist Herbivore Manduca sexta (Lepidoptera, Sphingidae) and Its Natural Host Nicotiana attenuata. VI. Microarray Analysis Reveals That Most Herbivore-Specific Transcriptional Changes Are Mediated by Fatty Acid-Amino Acid Conjugates1[w]
Evidence is accumulating that insect-specific plant responses are mediated by constituents in the oral secretions and regurgitants (R) of herbivores, however the relative importance of the different potentially active constituents remains unclear. Fatty acid-amino acid conjugates (FACs) are found in the R of many insect herbivores and have been shown to be n
American Society of Plant Biologists.
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6. Biosynthesis of the Juvenile Hormones of Manduca sexta: Labeling Pattern from Mevalonate, Propionate, and Acetate
Using organ culture, high-resolution liquid chromatography, and microchemical techniques, we demonstrated the efficient incorporation in vitro of several radiolabeled precursors into the two juvenile hormones of Manduca sexta. JH II, a homosesquiterpene hormone, reported from M. sexta as well as several other insects, incorporates radiolabel from acetate, me
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7. Bioassay for homogeneous parasporal crystal of Bacillus thuringiensis using the tobacco hornworm, Manduca sexta.
A method for determining the toxicity of Bacillus thuringiensis subsp. kurstaki parasporal crystal to the tabocco hornworm, Manduca sexta, is described. The use of both mortality and weight loss data have provided a highly sensitive and reproducible bioassay that can be used to compare relative toxicities of crystals from other subspecies as well as toxic co
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8. Characterization of a ubiquitin-fusion gene from the tobacco hawkmoth, Manduca sexta.
A gene encoding a ubiquitin-fusion protein was isolated from a cDNA library made from the intersegmental muscles (ISM) of the moth, Manduca sexta. The predicted amino acid sequence of this fusion protein is highly conserved when compared to the sequence of homologous proteins from diverse species. The Manduca clone encoding this ubiquitin fusion gene hybridi
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9. Isolation of Plasmid-Harboring Serratia plymuthica from Facultative Gut Microflora of the Tobacco Hornworm, Manduca sexta
Aseptic isolation of the facultative gut microflora of the tobacco hornworm, Manduca sexta, yielded four microorganisms. Two were gram-positive Bacillus spp., one was Serratia plymuthica, and another was the yeast Candida guilliermondii. The three bacterial species were screened for extrachromosomal DNA, and S. plymuthica was found to have a 6.4-kilobase pla
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10. Characterization and cDNA cloning of the pheromone-binding protein from the tobacco hornworm, Manduca sexta: a tissue-specific developmentally regulated protein.
cDNA encoding pheromone-binding protein (PBP), the major soluble protein in olfactory sensilla of male moths, has been cloned from the tobacco hornworm, Manduca sexta. A study of the developmental time course of PBP reveals that it is first synthesized just prior to eclosion and that the percentage of antennal mRNA encoding PBP shifts from zero to about 20%
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11. Distribution of binding sites for 125I-labeled alpha-bungarotoxin in normal and deafferented antennal lobes of Manduca sexta.
125I-Labeled alpha-bungarotoxin has been used to determine the distribution of putative acetylcholine receptors in normal and chronically deafferented antennal lobes in the brain of the moth Manduca sexta. Toxin-binding sites are confined to synaptic regions in deafferented lobes. These findings suggest that receptors can develop in the insect central nervou
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12. The role of low levels of juvenile hormone esterase in the metamorphosis of Manduca sexta
The activity of juvenile hormone esterase (JHE) in feeding fifth instar larvae of Manduca sexta increases gradually with larval weight and rises to a peak after larvae pass the critical weight when juvenile hormone secretion ceases. Starvation of larvae of Manduca sexta (L.) that had exceeded the critical weight inhibited peak levels of JHE, but did not dela
University of Arizona Library.