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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
25/09/1997 |
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Data da última atualização: |
06/09/2018 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
SOUZA, M. P.; SANTOS, R. K.; PINTO, R. M. S.; TORRES, S. B. |
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Afiliação: |
SALVADOR BARROS TORRES, CPATSA. |
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Título: |
Efeitos de diferentes substratos e de gradientes de luminosidade na germinacao de sementes de umbu (Spondias tuberosa Arruda) - Anacardiaceae. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
Informativo ABRATES, Curitiba, v. 7, n. 1/2, p. 216, 1997. |
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Idioma: |
Português |
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Conteúdo: |
Com o objetivo de determinar o melhor substrato e gradiente de luminosidade para a germinacao de sementes de umbu (Spondias tuberosa) foram conduzidos testes de germinacao com sementes colhidas de plantas matrizes no ano de 1994 na EMBRAPA-CPATSA, Petrolina- PE. As sementes foram escarificadas e posteriormente semeadas em caixa de zinco, com dimensoes 8,5 x 27 x 32,5cm preenchidas com os seguintes substratos: terra; areia lavada; esterco de caprinos; esterco de caprinos+terra (1:1); areia lavada+terra (1:1); areia lavada+terra (1:2), nas condicoes de ceu aberto, 25% e 50% de sombreamento. Foi utilizado o delineamento blocos ao acaso em esquema fatorial 6x3 com tres repeticoes. As medias foram comparadas pelo teste de Duncan a 5%. Os resultados referentes ao numero de sementes germinadas mostraram nao haver diferencas significativas devidas aos substratos e ao gradiente de luminosidade. O indice de velocidade de germinacao apresentou diferenca significativa quando foi utilizado o substrato areia lavada colocada a ceu aberto. Os demais substratos e respectivas interacoes com os gradientes de luminosidade nao foram significativos. |
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Palavras-Chave: |
Luminosidade; Seed; Substrate; Substrato. |
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Thesagro: |
Germinação; Semente; Spondias Tuberosa; Umbu. |
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Thesaurus Nal: |
germination. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/182604/1/Informativo-ABRATES-v.7-n.1-2-p.216-1997.pdf
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Marc: |
LEADER 01876nam a2200253 a 4500
001 1133490
005 2018-09-06
008 1997 bl uuuu u00u1 u #d
100 1 $aSOUZA, M. P.
245 $aEfeitos de diferentes substratos e de gradientes de luminosidade na germinacao de sementes de umbu (Spondias tuberosa Arruda) - Anacardiaceae.
260 $aInformativo ABRATES, Curitiba, v. 7, n. 1/2, p. 216$c1997
520 $aCom o objetivo de determinar o melhor substrato e gradiente de luminosidade para a germinacao de sementes de umbu (Spondias tuberosa) foram conduzidos testes de germinacao com sementes colhidas de plantas matrizes no ano de 1994 na EMBRAPA-CPATSA, Petrolina- PE. As sementes foram escarificadas e posteriormente semeadas em caixa de zinco, com dimensoes 8,5 x 27 x 32,5cm preenchidas com os seguintes substratos: terra; areia lavada; esterco de caprinos; esterco de caprinos+terra (1:1); areia lavada+terra (1:1); areia lavada+terra (1:2), nas condicoes de ceu aberto, 25% e 50% de sombreamento. Foi utilizado o delineamento blocos ao acaso em esquema fatorial 6x3 com tres repeticoes. As medias foram comparadas pelo teste de Duncan a 5%. Os resultados referentes ao numero de sementes germinadas mostraram nao haver diferencas significativas devidas aos substratos e ao gradiente de luminosidade. O indice de velocidade de germinacao apresentou diferenca significativa quando foi utilizado o substrato areia lavada colocada a ceu aberto. Os demais substratos e respectivas interacoes com os gradientes de luminosidade nao foram significativos.
650 $agermination
650 $aGerminação
650 $aSemente
650 $aSpondias Tuberosa
650 $aUmbu
653 $aLuminosidade
653 $aSeed
653 $aSubstrate
653 $aSubstrato
700 1 $aSANTOS, R. K.
700 1 $aPINTO, R. M. S.
700 1 $aTORRES, S. B.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Ocidental. Para informações adicionais entre em contato com cpaa.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
10/09/2012 |
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Data da última atualização: |
12/09/2012 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
CHEN, S. X.; ALMEIDA, F. F. L.; ANDERSSON, E.; TARANGER, G. L.; SCHMIDT, R.; SCHULZ, R. W.; BOGERD, J. |
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Afiliação: |
Shi X. Chen, State Key Laboratory of Marine Environmental Science, Xiamen University; FERNANDA LOUREIRO ALMEIDA OSULLIVAN, CPAA; Eva Andersson, Research Group Reproduction and Growth, Institute of Marine Research; Geir Lasse Taranger, Research Group Reproduction and Growth, Institute of Marine Research; Ruben Schmidt, Department of Biology, Faculty of Science, Utrecht University; Rüdiger W. Schulz, Department of Biology, Faculty of Science, Utrecht University; Jan Bogerd, Department of Biology, Faculty of Science, Utrecht University. |
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Título: |
Cloning, pharmacological characterization and expression analysis of Atlantic cod (Gadus morhua, L.) nuclear progesterone receptor. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
General and Comparative Endocrinology, v. 179, p. 71-77, 2012. |
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DOI: |
http://dx.doi.org/10.1016/j.ygcen.2012.07.022 |
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Idioma: |
Inglês |
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Conteúdo: |
To better understand the role(s) of progesterone in fish spermatogenesis, we cloned the nuclear progesterone receptor (Pgr) of Atlantic cod. The open-reading frame of the cod pgr consists of 2076 bp, coding for a 691-amino acids-long protein that shows the highest similarity with other piscine Pgr proteins. Functional characterization of the receptor expressed in mammalian cells revealed that the cod Pgr exhibited progesterone-specific, dose-dependent induction of reporter gene expression, with 17a,20bdihydroxy- 4-pregnen-3-one (DHP), a typical piscine progesterone, showing the highest potency in activating the receptor. During ontogenesis, the pgr mRNA was undetectable in embryo?s 24 h after fertilization, but became detectable 4 days after fertilization. During the larval stage, the expression levels increased steadily with the development of the larvae. In adult fish, pgr was predominantly expressed in gonads of both sexes. During the onset of puberty, testicular pgr transcript levels started to increase during rapid spermatogonial proliferation, and peaked when spermiation started. In situ hybridization studies using testis tissue during the rapid growth phase containing all germ cell stages indicated that in cod, pgr mRNA is predominantly located in Sertoli cells that are in contact with proliferating spermatogonia. Taken together, our data suggests that the Pgr is involved in mediating progestagen stimulation of the mitotic expansion of spermatogonia, and in processes associated with the spermiation/spawning period in Atlantic cod. MenosTo better understand the role(s) of progesterone in fish spermatogenesis, we cloned the nuclear progesterone receptor (Pgr) of Atlantic cod. The open-reading frame of the cod pgr consists of 2076 bp, coding for a 691-amino acids-long protein that shows the highest similarity with other piscine Pgr proteins. Functional characterization of the receptor expressed in mammalian cells revealed that the cod Pgr exhibited progesterone-specific, dose-dependent induction of reporter gene expression, with 17a,20bdihydroxy- 4-pregnen-3-one (DHP), a typical piscine progesterone, showing the highest potency in activating the receptor. During ontogenesis, the pgr mRNA was undetectable in embryo?s 24 h after fertilization, but became detectable 4 days after fertilization. During the larval stage, the expression levels increased steadily with the development of the larvae. In adult fish, pgr was predominantly expressed in gonads of both sexes. During the onset of puberty, testicular pgr transcript levels started to increase during rapid spermatogonial proliferation, and peaked when spermiation started. In situ hybridization studies using testis tissue during the rapid growth phase containing all germ cell stages indicated that in cod, pgr mRNA is predominantly located in Sertoli cells that are in contact with proliferating spermatogonia. Taken together, our data suggests that the Pgr is involved in mediating progestagen stimulation of the mitotic expansion of spermatogonia, and in processes ... Mostrar Tudo |
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Palavras-Chave: |
Atlantic cod; Nuclear progesterone receptor. |
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Thesaurus NAL: |
spermatogenesis. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02333naa a2200241 a 4500
001 1933292
005 2012-09-12
008 2012 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1016/j.ygcen.2012.07.022$2DOI
100 1 $aCHEN, S. X.
245 $aCloning, pharmacological characterization and expression analysis of Atlantic cod (Gadus morhua, L.) nuclear progesterone receptor.
260 $c2012
520 $aTo better understand the role(s) of progesterone in fish spermatogenesis, we cloned the nuclear progesterone receptor (Pgr) of Atlantic cod. The open-reading frame of the cod pgr consists of 2076 bp, coding for a 691-amino acids-long protein that shows the highest similarity with other piscine Pgr proteins. Functional characterization of the receptor expressed in mammalian cells revealed that the cod Pgr exhibited progesterone-specific, dose-dependent induction of reporter gene expression, with 17a,20bdihydroxy- 4-pregnen-3-one (DHP), a typical piscine progesterone, showing the highest potency in activating the receptor. During ontogenesis, the pgr mRNA was undetectable in embryo?s 24 h after fertilization, but became detectable 4 days after fertilization. During the larval stage, the expression levels increased steadily with the development of the larvae. In adult fish, pgr was predominantly expressed in gonads of both sexes. During the onset of puberty, testicular pgr transcript levels started to increase during rapid spermatogonial proliferation, and peaked when spermiation started. In situ hybridization studies using testis tissue during the rapid growth phase containing all germ cell stages indicated that in cod, pgr mRNA is predominantly located in Sertoli cells that are in contact with proliferating spermatogonia. Taken together, our data suggests that the Pgr is involved in mediating progestagen stimulation of the mitotic expansion of spermatogonia, and in processes associated with the spermiation/spawning period in Atlantic cod.
650 $aspermatogenesis
653 $aAtlantic cod
653 $aNuclear progesterone receptor
700 1 $aALMEIDA, F. F. L.
700 1 $aANDERSSON, E.
700 1 $aTARANGER, G. L.
700 1 $aSCHMIDT, R.
700 1 $aSCHULZ, R. W.
700 1 $aBOGERD, J.
773 $tGeneral and Comparative Endocrinology$gv. 179, p. 71-77, 2012.
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Embrapa Amazônia Ocidental (CPAA) |
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