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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
17/02/2011 |
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Data da última atualização: |
21/02/2011 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CASTANHOLE, M. M. U.; PEREIRA, L. L. V.; SOUZA, H. V. DE; VALERIO, J. R.; BARBOSA, L. R.; ITOYAMA, M. M. |
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Afiliação: |
MÁRCIA MARIA URBANIN CASTANHOLE, Universidade Estadual Paulista ‘Júlio de Mesquita Filho’; LUIS LÊNIN VICENTE PEREIRA, UNIVERSIDADE ESTADUAL PAULISTA ‘JÚLIO DE MESQUITA FILHO’; HEDERSON VINICIUS DE SOUZA, UNIVERSIDADE ESTADUAL PAULISTA ‘JÚLIO DE MESQUITA FILHO’; JOSE RAUL VALERIO, CNPGC; LEONARDO RODRIGUES BARBOSA, CNPF; MARY MASSUMI ITOYAMA, UNIVERSIDADE ESTADUAL PAULISTA ‘JÚLIO DE MESQUITA FILHO’. |
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Título: |
Meiotic chromosomes and nucleolar behavior in testicular cells of the grassland spittlebugs Deois flavopicta, Mahanarva fimbriolata and Notozulia entreriana (Hemiptera, Auchenorrhyncha) |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Genetics and Molecular Biology, v. 33, n. 2, p. 244-252, 2010. |
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Páginas: |
p. 244-252 |
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Idioma: |
Português |
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Conteúdo: |
Spittlebugs annually infest pastures and cause severe damage, representing a serious problem for the tropical American beef cattle industry. Spittlebugs are an important biotic constraint to forage production and there is a lack of cytogenetic data for this group of insects. For these reasons, we conducted this work, in which the spermatogenesis and nucleolar behavior of Deois flavopicta, Mahanarva fimbriolata and Notozulia entreriana were studied. The males possessed testes in the shape of a ?bunch of grapes?; a variable number of testicular lobes per individual and polyploid nuclei composed of several heteropycnotic bodies. A heteropycnotic area was located in the periphery of the nucleus (prophase I); the chiasmata were terminal or interstitial; metaphases I were circular or linear and anaphase showed late migration of the sex chromosome. The chromosome complement had 2n = 19, except for N. entreriana (2n = 15); the spermatids were round with heteropycnotic material in the center and elongated with conspicuos chromatin. The analysis of testes after silver nitrate staining showed polyploid nuclei with three large and
three smaller nucleolar bodies. Early prophase cells had an intensely stained nucleolar body located close to the chromatin and another less evident body located away from the chromatin. The nucleolar bodies disintegrated during diplotene. Silver staining occurred in two autosomes, in terminal and subterminal locations, the latter probably corresponding to the nucleolus organizer regions (NORs). The spermatids were round with a round nucleolar body and silver staining was observed in the medial and posterior region of the elongated part of the spermatid head. MenosSpittlebugs annually infest pastures and cause severe damage, representing a serious problem for the tropical American beef cattle industry. Spittlebugs are an important biotic constraint to forage production and there is a lack of cytogenetic data for this group of insects. For these reasons, we conducted this work, in which the spermatogenesis and nucleolar behavior of Deois flavopicta, Mahanarva fimbriolata and Notozulia entreriana were studied. The males possessed testes in the shape of a ?bunch of grapes?; a variable number of testicular lobes per individual and polyploid nuclei composed of several heteropycnotic bodies. A heteropycnotic area was located in the periphery of the nucleus (prophase I); the chiasmata were terminal or interstitial; metaphases I were circular or linear and anaphase showed late migration of the sex chromosome. The chromosome complement had 2n = 19, except for N. entreriana (2n = 15); the spermatids were round with heteropycnotic material in the center and elongated with conspicuos chromatin. The analysis of testes after silver nitrate staining showed polyploid nuclei with three large and
three smaller nucleolar bodies. Early prophase cells had an intensely stained nucleolar body located close to the chromatin and another less evident body located away from the chromatin. The nucleolar bodies disintegrated during diplotene. Silver staining occurred in two autosomes, in terminal and subterminal locations, the latter probably corresponding to the... Mostrar Tudo |
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Palavras-Chave: |
Caracterização cromossômica; Chromosomal characterization; Holocentric chromosomes; Karyotype. |
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Thesagro: |
Citogenética; Pastagem; Praga. |
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Thesaurus Nal: |
spermatogenesis. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02633naa a2200289 a 4500
001 1877635
005 2011-02-21
008 2010 bl --- 0-- u #d
100 1 $aCASTANHOLE, M. M. U.
245 $aMeiotic chromosomes and nucleolar behavior in testicular cells of the grassland spittlebugs Deois flavopicta, Mahanarva fimbriolata and Notozulia entreriana (Hemiptera, Auchenorrhyncha)
260 $c2010
300 $ap. 244-252
520 $aSpittlebugs annually infest pastures and cause severe damage, representing a serious problem for the tropical American beef cattle industry. Spittlebugs are an important biotic constraint to forage production and there is a lack of cytogenetic data for this group of insects. For these reasons, we conducted this work, in which the spermatogenesis and nucleolar behavior of Deois flavopicta, Mahanarva fimbriolata and Notozulia entreriana were studied. The males possessed testes in the shape of a ?bunch of grapes?; a variable number of testicular lobes per individual and polyploid nuclei composed of several heteropycnotic bodies. A heteropycnotic area was located in the periphery of the nucleus (prophase I); the chiasmata were terminal or interstitial; metaphases I were circular or linear and anaphase showed late migration of the sex chromosome. The chromosome complement had 2n = 19, except for N. entreriana (2n = 15); the spermatids were round with heteropycnotic material in the center and elongated with conspicuos chromatin. The analysis of testes after silver nitrate staining showed polyploid nuclei with three large and three smaller nucleolar bodies. Early prophase cells had an intensely stained nucleolar body located close to the chromatin and another less evident body located away from the chromatin. The nucleolar bodies disintegrated during diplotene. Silver staining occurred in two autosomes, in terminal and subterminal locations, the latter probably corresponding to the nucleolus organizer regions (NORs). The spermatids were round with a round nucleolar body and silver staining was observed in the medial and posterior region of the elongated part of the spermatid head.
650 $aspermatogenesis
650 $aCitogenética
650 $aPastagem
650 $aPraga
653 $aCaracterização cromossômica
653 $aChromosomal characterization
653 $aHolocentric chromosomes
653 $aKaryotype
700 1 $aPEREIRA, L. L. V.
700 1 $aSOUZA, H. V. DE
700 1 $aVALERIO, J. R.
700 1 $aBARBOSA, L. R.
700 1 $aITOYAMA, M. M.
773 $tGenetics and Molecular Biology$gv. 33, n. 2, p. 244-252, 2010.
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Registro original: |
Embrapa Gado de Corte (CNPGC) |
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Biblioteca(s): |
Embrapa Agroenergia. |
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Data corrente: |
02/12/2016 |
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Data da última atualização: |
24/02/2017 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
SIMPLICIO, E. da S.; RODRIGUES, D. de S.; SILVA, F. M.; VALADARES, L. F. |
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Afiliação: |
ELIANE DA SILVA SIMPLICIO; DASCIANA DE SOUSA RODRIGUES, CNPAE; FABRÍCIO MACHADO SILVA; LEONARDO FONSECA VALADARES, CNPAE. |
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Título: |
Isolamento e caracterização de nanofibras de celulose de engaços de dendê obtidas por hidrólise enzimática. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
In: ENCONTRO DE PESQUISA E INOVAÇÃO DA EMBRAPA AGROENERGIA, 3., 2016, Brasília, DF. Anais ... Brasília, DF: Embrapa, 2016. |
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Páginas: |
p. 174-181. |
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Idioma: |
Português |
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Palavras-Chave: |
Caracterização de nanofibras de celulose; Celulose de engaços de dendê; Hidrólise enzimática; Isolamento de nanofibras de celulose; Tempos de reação. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/151137/1/III-EnPI-2016-176-183.pdf
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Marc: |
LEADER 00812nam a2200205 a 4500
001 2057818
005 2017-02-24
008 2016 bl uuuu u00u1 u #d
100 1 $aSIMPLICIO, E. da S.
245 $aIsolamento e caracterização de nanofibras de celulose de engaços de dendê obtidas por hidrólise enzimática.$h[electronic resource]
260 $aIn: ENCONTRO DE PESQUISA E INOVAÇÃO DA EMBRAPA AGROENERGIA, 3., 2016, Brasília, DF. Anais ... Brasília, DF: Embrapa$c2016
300 $ap. 174-181.
653 $aCaracterização de nanofibras de celulose
653 $aCelulose de engaços de dendê
653 $aHidrólise enzimática
653 $aIsolamento de nanofibras de celulose
653 $aTempos de reação
700 1 $aRODRIGUES, D. de S.
700 1 $aSILVA, F. M.
700 1 $aVALADARES, L. F.
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