Rhynchosciara
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. The histone genes cluster in Rhynchosciara americana and its transcription profile in salivary glands during larval development
Abstract In this work we report the characterization of the Rhynchosciara americana histone genes cluster nucleotide sequence. It spans 5,131 bp and contains the four core histones and the linker histone H1. Putative control elements were detected. We also determined the copy number of the tandem repeat unit through quantitative PCR, as well as the unequivoc
Genet. Mol. Biol.. Publicado em: 10/10/2016
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2. Aspectos celulares e moleculares das glândulas salivares e do corpo gorduroso de Rhynchosciara americana durante o desenvolvimento. / Cellular and molecular aspects of salivary glands and fat body of Rhynchosciara americana during development.
Durante o desenvolvimento de holometálobos alguns tecidos são eliminados/remodelados durante a metamorfose. A autofagia age nesse processo degradando componentes citoplasmáticos, inicialmente isolando-os em dupla membrana, estrutura chamada autofagossomo e esses conteúdos são degradados por hidrolases lisossomais. Porém, aspectos apoptóticos podem est
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/04/2011
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3. DNA repetitivo e seu papel na estrutura cromossômica terminal em Rhynchosciara americana (Diptera: Sciaridae) / The role of repetitive DNA in the chromosome termini of Rhynchosciara americana (Diptera: Sciaridae)
The chromosomal localization of ribosomal DNA (rDNA) was studied in polytene and diploid tissues of four sciarid species, Trichosia pubescens, Rhynchosciara americana, R. milleri and Schwenkfeldina sp. While hybridization to mitotic chromosomes showed the existence of a single rDNA locus, ribosomal probes hybridized to more than one polytene chromosome regio
Publicado em: 2008
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4. Identificação e caracterização de elementos de transposição no genoma de Rhynchosciara / Identification e characterization of transposable elements in genome of Rhynchosciara
Transposable elements are discrete sequences that are able to move from one locus to another within the genome, constituting a significant part of eukaryotic genome. They are grouped into two main types, Class I elements transpose via an RNA intermediate (retrotransposon), and Class II elements transpose via a DNA "cut-and-paste" mechanism (transposons). The
Publicado em: 2007
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5. Genome size of three Brazilian flies from the Sciaridae family
We determined the genome size of the Brazilian sciarid flies Bradysia hygida, Rhynchosciara americana and Trichosia pubescens (Diptera: Sciaridae) using absorbance measurements of Feulgen-stained nuclei belonging to these species (and chicken erythrocytes as a standard) to calculate the amount of DNA in picograms (pg) and the number of base pairs (bp), or C-
Genetics and Molecular Biology. Publicado em: 2005-12
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6. Expression of dorsal-ventral genes during early development of Rhynchosciara americana embryos
The establishment of dorsal-ventral polarity in Drosophila is a complex process which involves the action of maternal and zygotically expressed genes. Interspecific differences in the expression pattern of some of these genes have been described in other species. Here we present the expression of dorsal-ventral genes during early embryogenesis in the lower d
Brazilian Journal of Medical and Biological Research. Publicado em: 2005-01
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7. Identificação, caracterização e estudo da expressão dos genes hsc70 e hsp83 em Rhynchosciara americana / Identification, characterization and study of expression of the genes hsc70 and hsp83 in Rhynchosciara americana
With the idea of identify some of these proteins involved in the folding process of the proteins synthesized on the Rhynchosciara salivary gland, this project started adopting the shotgun cDNA sequencing strategy. This cDNA library was constructed utilizing salivary glands of Rhynchosciara americana at a developmental period where the cocoon construction beg
Publicado em: 2005
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8. Sequencing and analysis of a EST Bank from salivary glands of Rhynchosciara americana and characterization of the gene RaDup / Sequenciamento e análise de um banco de cDNA de glândulas salivares de Rhynchosciara americana e caracterização do gene RaDup
In this work EST sequencing was used as strategy to find messages related to development, metabolism and polyteny/amplification in salivary glands of Rhynchosciara americana, a dipteran (Sciaridae) that shows in this tissue giant polytene chromosomes and gene amplification tightly regulated throughout development of the larvae. A total of 8193 EST sequences
Publicado em: 2004
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9. Terminal digestion in Rhynchosciara americana / Digestão terminal em Rhynchosciara americana
Um enfoque analítico, envolvendo centrifugação diferencial de homogeneizados de cecos gástricos de Rhynchosciara americana preparados em condições brandas e vigorosas, suporta a asserção de que existe uma classe principal de aril-α- e β -glicosidases, aril-α- e β-galactosidases e celobiases que é ligada à membrana plasmática, e
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/09/1979
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10. Estudo citoquimico e citofisico do desenvolvimento pos-embrionario das glandulas salivares de Bradysia spatitergum (Hardy, 1956)
As glândulas salivares de Bradysia spatitergum apresentam um aspecto morfológico típico, quando comparadas com glândulas salivares de outros sciarídeos. Suas características citoquímicas são também particulares, quando comparadas com as de Bradysia sp, Rhynchosciara americana e Rhunchosciara sp. Os testes citoquímicos realizados evidenciaram a pres
Publicado em: 1977
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11. Discovery of DNA Puffs in Rhynchosciara
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12. Characterization of the elongation factor 1-alpha gene of Rhynchosciara americana.