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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
22/11/2011 |
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Data da última atualização: |
11/11/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SIMINSKI, A.; FANTINI, A. C.; GURIES, R. P.; RUSCHEL, A. R.; REIS, M. S. dos. |
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Afiliação: |
ALEXANDRE SIMINSKI, UFSC; ALFREDO CELSO FANTINI, UFSC; RAYMOND PAUL GURIES, UNIVERSITY OF WISCONSIN-MADISON; ADEMIR ROBERTO RUSCHEL, CPATU; MAURICIO SEDREZ DOS REIS, UFSC. |
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Título: |
Secondary forest succession in the Mata Atlantica, Brazil: floristic and phytosociological trends. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
ISRN Ecology, v. 2011, p. 1-19, 2011. |
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DOI: |
10.5402/2011/759893 |
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Idioma: |
Inglês |
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Notas: |
Article ID 759893. |
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Conteúdo: |
This study aimed at understanding the dynamics of ecological processes and the use of secondary forests in Santa Catarina state (Brazil). The data base for these studies was formed through forest inventories carried out in the three forest types of the state. The results of this study demonstrate that the patterns of diversity are very similar among the three forest types; however, the species compositions among the types are quite different. A total of 343 woody species belonging to 73 families were found in the 24,000 m2 sampling area, revealing the potential role of secondary forest in the conservation of biodiversity at the landscape scale. As expected, a small set of pioneer species dominates young secondary forests with shade-tolerant species becoming structurally important after 30 years. The patterns of forest structure and species diversity observed in study largely conform to the postagricultural secondary succession observed for many tropical forests. |
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Palavras-Chave: |
Brasil; Mata atlântica; Sucessão florestal. |
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Thesagro: |
Floresta Secundaria. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/47363/1/SeconsaryForest.pdf
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Marc: |
LEADER 01690naa a2200241 a 4500
001 1906657
005 2022-11-11
008 2011 bl uuuu u00u1 u #d
024 7 $a10.5402/2011/759893$2DOI
100 1 $aSIMINSKI, A.
245 $aSecondary forest succession in the Mata Atlantica, Brazil$bfloristic and phytosociological trends.$h[electronic resource]
260 $c2011
500 $aArticle ID 759893.
520 $aThis study aimed at understanding the dynamics of ecological processes and the use of secondary forests in Santa Catarina state (Brazil). The data base for these studies was formed through forest inventories carried out in the three forest types of the state. The results of this study demonstrate that the patterns of diversity are very similar among the three forest types; however, the species compositions among the types are quite different. A total of 343 woody species belonging to 73 families were found in the 24,000 m2 sampling area, revealing the potential role of secondary forest in the conservation of biodiversity at the landscape scale. As expected, a small set of pioneer species dominates young secondary forests with shade-tolerant species becoming structurally important after 30 years. The patterns of forest structure and species diversity observed in study largely conform to the postagricultural secondary succession observed for many tropical forests.
650 $aFloresta Secundaria
653 $aBrasil
653 $aMata atlântica
653 $aSucessão florestal
700 1 $aFANTINI, A. C.
700 1 $aGURIES, R. P.
700 1 $aRUSCHEL, A. R.
700 1 $aREIS, M. S. dos
773 $tISRN Ecology$gv. 2011, p. 1-19, 2011.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
21/12/2011 |
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Data da última atualização: |
05/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
FOYE-JACKSON, O. T.; LONG, J. A.; BAKST, M. R.; BLOMBERG, L. A.; AKUFFO, V. G.; SILVA, M. V. G. B.; GUTHRIE, H. D.; McMURTRY, J. P. |
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Afiliação: |
O. T. FOYE-JACKSON, USDA; J. A. LONG, USDA; M. R. BAKST, USDA; L. A. BLOMBERG, USDA; V. G. AKUFFO, USDA; MARCOS VINICIUS GUALBERTO B SILVA, CNPGL; H. D. GUTHRIE, USDA; J. P. McMURTRY, USDA. |
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Título: |
Oviductal expression of avidin, avidin-related protein-2, and progesterone receptor in turkey hens in relation to sperm storage: effects of oviduct tissue type, sperm presence, and turkey line. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Poultry Science, v. 90, n. 7, p. 1539-1547, 2011. |
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DOI: |
https://doi.org/10.3382/ps.2010-01159 |
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Idioma: |
Inglês |
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Conteúdo: |
The sperm storage tubules (SST) of the turkey hen, which are located in the uterovaginal junction (UVJ) of the oviduct, maintain viable sperm for up to 10 wk after a single insemination. The mechanisms of this in vivo sperm storage are poorly understood. Our objective was to evaluate mRNA and protein expression of avidin and 2 avidin-associated factors, avidin-related protein-2 (AVR2) and progesterone receptor, in the oviducts of 2 different lines to determine the extent to which they were sperm responsive and tissue specific. At 38 wk of age, Hybrid Grade Maker and Converter turkey hens were artificially inseminated with diluted semen (AI) or were sham-inseminated with extender alone (SI). Forty-eight hours after insemination, total RNA was extracted from the UVJ epithelium (containing SST) and vaginal epithelium (VGE) of SI and AI hens. Real time-polymerase chain reaction data showed a clear tissue region-specific effect on gene expression in the turkey hen oviduct, with much greater (P < 0.0001) expression in the UVJ compared with VGE region for avidin and AVR2 mRNA in both lines and for progesterone receptor mRNA in the Converter line. In contrast to real-time PCR data, in situ hybridization of SI and AI tissues showed that the presence of sperm increased avidin mRNA in the SST and UVJ surface epithelium in the Converter hens. Immunohistochemistry confirmed the presence of avidin protein in the epithelium of the UVJ in both lines; however, whereas avidin protein was localized in the SST of SI-Grade Maker hens, this protein was not detected in the SST of Converter hens. The upregulation of avidin and AVR2 mRNA within the sperm storage region indicates the involvement of avidin, and perhaps avidin analogs, in the sustained storage of sperm in the SST, possibly through the binding of biotin to avidin. The absence of avidin protein in the SST and VGE of Converter hens in the presence of increased mRNA may indicate a rapid turnover of protein. MenosThe sperm storage tubules (SST) of the turkey hen, which are located in the uterovaginal junction (UVJ) of the oviduct, maintain viable sperm for up to 10 wk after a single insemination. The mechanisms of this in vivo sperm storage are poorly understood. Our objective was to evaluate mRNA and protein expression of avidin and 2 avidin-associated factors, avidin-related protein-2 (AVR2) and progesterone receptor, in the oviducts of 2 different lines to determine the extent to which they were sperm responsive and tissue specific. At 38 wk of age, Hybrid Grade Maker and Converter turkey hens were artificially inseminated with diluted semen (AI) or were sham-inseminated with extender alone (SI). Forty-eight hours after insemination, total RNA was extracted from the UVJ epithelium (containing SST) and vaginal epithelium (VGE) of SI and AI hens. Real time-polymerase chain reaction data showed a clear tissue region-specific effect on gene expression in the turkey hen oviduct, with much greater (P < 0.0001) expression in the UVJ compared with VGE region for avidin and AVR2 mRNA in both lines and for progesterone receptor mRNA in the Converter line. In contrast to real-time PCR data, in situ hybridization of SI and AI tissues showed that the presence of sperm increased avidin mRNA in the SST and UVJ surface epithelium in the Converter hens. Immunohistochemistry confirmed the presence of avidin protein in the epithelium of the UVJ in both lines; however, whereas avidin protein was loca... Mostrar Tudo |
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Palavras-Chave: |
Avidin expression; Sperm storage tubule; Turkey hen; Vaginal epithelium. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02882naa a2200265 a 4500
001 1910559
005 2024-02-05
008 2011 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.3382/ps.2010-01159$2DOI
100 1 $aFOYE-JACKSON, O. T.
245 $aOviductal expression of avidin, avidin-related protein-2, and progesterone receptor in turkey hens in relation to sperm storage$beffects of oviduct tissue type, sperm presence, and turkey line.$h[electronic resource]
260 $c2011
520 $aThe sperm storage tubules (SST) of the turkey hen, which are located in the uterovaginal junction (UVJ) of the oviduct, maintain viable sperm for up to 10 wk after a single insemination. The mechanisms of this in vivo sperm storage are poorly understood. Our objective was to evaluate mRNA and protein expression of avidin and 2 avidin-associated factors, avidin-related protein-2 (AVR2) and progesterone receptor, in the oviducts of 2 different lines to determine the extent to which they were sperm responsive and tissue specific. At 38 wk of age, Hybrid Grade Maker and Converter turkey hens were artificially inseminated with diluted semen (AI) or were sham-inseminated with extender alone (SI). Forty-eight hours after insemination, total RNA was extracted from the UVJ epithelium (containing SST) and vaginal epithelium (VGE) of SI and AI hens. Real time-polymerase chain reaction data showed a clear tissue region-specific effect on gene expression in the turkey hen oviduct, with much greater (P < 0.0001) expression in the UVJ compared with VGE region for avidin and AVR2 mRNA in both lines and for progesterone receptor mRNA in the Converter line. In contrast to real-time PCR data, in situ hybridization of SI and AI tissues showed that the presence of sperm increased avidin mRNA in the SST and UVJ surface epithelium in the Converter hens. Immunohistochemistry confirmed the presence of avidin protein in the epithelium of the UVJ in both lines; however, whereas avidin protein was localized in the SST of SI-Grade Maker hens, this protein was not detected in the SST of Converter hens. The upregulation of avidin and AVR2 mRNA within the sperm storage region indicates the involvement of avidin, and perhaps avidin analogs, in the sustained storage of sperm in the SST, possibly through the binding of biotin to avidin. The absence of avidin protein in the SST and VGE of Converter hens in the presence of increased mRNA may indicate a rapid turnover of protein.
653 $aAvidin expression
653 $aSperm storage tubule
653 $aTurkey hen
653 $aVaginal epithelium
700 1 $aLONG, J. A.
700 1 $aBAKST, M. R.
700 1 $aBLOMBERG, L. A.
700 1 $aAKUFFO, V. G.
700 1 $aSILVA, M. V. G. B.
700 1 $aGUTHRIE, H. D.
700 1 $aMcMURTRY, J. P.
773 $tPoultry Science$gv. 90, n. 7, p. 1539-1547, 2011.
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