|
|
| Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo |
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
21/12/2011 |
Data da última atualização: |
17/04/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
TORRES, A. R.; KASCHUK, G.; SARIDAKIS, G. P.; CUNHA, M. H. da. |
Afiliação: |
ADALGISA RIBEIRO TORRES; GLACIELA KASCHUK, Universidade Paranaense; GEORGE P. SARIDAKIS; MARIANGELA HUNGRIA DA CUNHA, CNPSO. |
Título: |
Genetic variability in Bradyrhizobium japonicum strains nodulating soybean [Glycine max (L.) Merrill]. |
Ano de publicação: |
2011 |
Fonte/Imprenta: |
World Journal of Microbiology and Biotechnology, Dec. 2011. |
DOI: |
10.1007/s11274-011-0964-3 |
Idioma: |
Inglês |
Conteúdo: |
Brazil has succeeded in sustaining production of soybean [Glycine max (L.) Merrill] by relying mainly on symbiotic N2 fixation, thanks to the selection and use in inoculants of very effective strains of Bradyrhizobium japonicum and Bradyrhizobium elkanii. It is desirable that rhizobial strains used in inoculants have stable genetic and physiological traits, but experience confirms that rhizobial strains nodulating soybean often lose competitiveness in the field. In this study, soybean cultivar BR 16 was singleinoculated with four B. japonicum strains (CIAT 88, CIAT 89, CIAT 104 and CIAT 105) under aseptic conditions. Forty colonies were isolated from nodules produced by each strain. The progenitor strains, the isolates and four other commercially recommended strains were applied separately to the same cultivar under controlled greenhouse conditions. We observed significant variability in nodulation, shoot dry weight, shoot total N, nodule efficiency (total N mass over nodule mass) and BOX-PCR fingerprinting profiles between variant and progenitor strains. Some variant strains resulted in significantly larger responses in terms of shoot total N, dry weight and nodule efficiency, when compared to their progenitor strain. These results highlight the need for intermittent evaluation of stock bacterial cultures to guarantee effective symbiosis after inoculation. Most importantly, it indicates that it is possible to improve symbiotic effectiveness by screening rhizobial strains for higher N2 fixation capacity within the natural variability that can be found within each progenitor strain. MenosBrazil has succeeded in sustaining production of soybean [Glycine max (L.) Merrill] by relying mainly on symbiotic N2 fixation, thanks to the selection and use in inoculants of very effective strains of Bradyrhizobium japonicum and Bradyrhizobium elkanii. It is desirable that rhizobial strains used in inoculants have stable genetic and physiological traits, but experience confirms that rhizobial strains nodulating soybean often lose competitiveness in the field. In this study, soybean cultivar BR 16 was singleinoculated with four B. japonicum strains (CIAT 88, CIAT 89, CIAT 104 and CIAT 105) under aseptic conditions. Forty colonies were isolated from nodules produced by each strain. The progenitor strains, the isolates and four other commercially recommended strains were applied separately to the same cultivar under controlled greenhouse conditions. We observed significant variability in nodulation, shoot dry weight, shoot total N, nodule efficiency (total N mass over nodule mass) and BOX-PCR fingerprinting profiles between variant and progenitor strains. Some variant strains resulted in significantly larger responses in terms of shoot total N, dry weight and nodule efficiency, when compared to their progenitor strain. These results highlight the need for intermittent evaluation of stock bacterial cultures to guarantee effective symbiosis after inoculation. Most importantly, it indicates that it is possible to improve symbiotic effectiveness by screening rhizobial strains fo... Mostrar Tudo |
Thesagro: |
Fixação de nitrogênio; Soja. |
Thesaurus Nal: |
Nitrogen fixation; Soybeans. |
Categoria do assunto: |
S Ciências Biológicas |
Marc: |
LEADER 02254naa a2200217 a 4500 001 1910598 005 2018-04-17 008 2011 bl uuuu u00u1 u #d 024 7 $a10.1007/s11274-011-0964-3$2DOI 100 1 $aTORRES, A. R. 245 $aGenetic variability in Bradyrhizobium japonicum strains nodulating soybean [Glycine max (L.) Merrill]. 260 $c2011 520 $aBrazil has succeeded in sustaining production of soybean [Glycine max (L.) Merrill] by relying mainly on symbiotic N2 fixation, thanks to the selection and use in inoculants of very effective strains of Bradyrhizobium japonicum and Bradyrhizobium elkanii. It is desirable that rhizobial strains used in inoculants have stable genetic and physiological traits, but experience confirms that rhizobial strains nodulating soybean often lose competitiveness in the field. In this study, soybean cultivar BR 16 was singleinoculated with four B. japonicum strains (CIAT 88, CIAT 89, CIAT 104 and CIAT 105) under aseptic conditions. Forty colonies were isolated from nodules produced by each strain. The progenitor strains, the isolates and four other commercially recommended strains were applied separately to the same cultivar under controlled greenhouse conditions. We observed significant variability in nodulation, shoot dry weight, shoot total N, nodule efficiency (total N mass over nodule mass) and BOX-PCR fingerprinting profiles between variant and progenitor strains. Some variant strains resulted in significantly larger responses in terms of shoot total N, dry weight and nodule efficiency, when compared to their progenitor strain. These results highlight the need for intermittent evaluation of stock bacterial cultures to guarantee effective symbiosis after inoculation. Most importantly, it indicates that it is possible to improve symbiotic effectiveness by screening rhizobial strains for higher N2 fixation capacity within the natural variability that can be found within each progenitor strain. 650 $aNitrogen fixation 650 $aSoybeans 650 $aFixação de nitrogênio 650 $aSoja 700 1 $aKASCHUK, G. 700 1 $aSARIDAKIS, G. P. 700 1 $aCUNHA, M. H. da 773 $tWorld Journal of Microbiology and Biotechnology, Dec. 2011.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Soja (CNPSO) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
| Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Amazônia Oriental; Embrapa Pecuária Sudeste. |
Data corrente: |
15/02/2018 |
Data da última atualização: |
22/11/2018 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 1 |
Autoria: |
SILVA, L. K. X.; SOUSA, J. S.; SILVA, A. O. A.; LOURENÇO JUNIOR, J. B.; FATURI, C.; MARTORANO, L. G.; FRANCO, I. M.; PANTOJA, M. H. A.; BARROS, D. V.; GARCIA, A. R. |
Afiliação: |
L. K. X. Silva, UFPA; J. S. SOUSA, UFPA; A. O. A. SILVA, UFPA; JOSÉ DE BRITO LOURENÇO JUNIOR, UFPA; C. FATURI, UFRA; LUCIETA GUERREIRO MARTORANO, CPATU; I. M. FRANCO, UFPA; M. H. A. PANTOJA, UFPA; D. V. BARROS, UFPA; ALEXANDRE ROSSETTO GARCIA, CPPSE. |
Título: |
Testicular thermoregulation, scrotal surface temperature patterns and semen quality of water buffalo bulls reared in a tropical climate. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Andrologia, v. 50, n. 2, e12836, Mar. 2018. |
DOI: |
10.1111/and.12836 |
Idioma: |
Inglês |
Conteúdo: |
This study evaluated the capacity of thermoregulation and its consequences on the scrotal surface temperature patterns and semen quality of buffalo bulls raised in a wet tropical climate. Eleven water buffaloes were evaluated in the rainiest, in the transitional and in the less rainy season. Air temperature and humidity were consistently high, but the animals did not show thermal stress in any season. The scrotal temperature gradient of buffalo bulls using infrared thermography was described, and three parallel and decreasing thermal bands were characterised. Sperm quality (n = 176 ejaculates) was maintained in normal parameters over the periods. Pearson's coefficients showed that sperm volume and progressive motility were negatively correlated with ocular globe, epididymal tail and minimum scrotal temperatures (p < .01). Sperm membrane integrity was negatively influenced by increases in epididymal tail and minimum scrotal temperatures (p < .01). Ocular globe temperature also showed positive correlation with rectal, spermatic cord, and epididymal tail temperatures (p < .01). Therefore, even under high temperature and humidity, the thermoregulatory system was effective in preventing heat stress and the normality of scrotal surface temperatures, spermatogenesis and sperm maturation were maintained. |
Palavras-Chave: |
Bubalino; Escroto; Temperaturas escrotais; Termografia infravermelha. |
Thesagro: |
Bubalus Bubalis; Sêmen; Temperatura. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 02288naa a2200325 a 4500 001 2087641 005 2018-11-22 008 2018 bl uuuu u00u1 u #d 024 7 $a10.1111/and.12836$2DOI 100 1 $aSILVA, L. K. X. 245 $aTesticular thermoregulation, scrotal surface temperature patterns and semen quality of water buffalo bulls reared in a tropical climate.$h[electronic resource] 260 $c2018 520 $aThis study evaluated the capacity of thermoregulation and its consequences on the scrotal surface temperature patterns and semen quality of buffalo bulls raised in a wet tropical climate. Eleven water buffaloes were evaluated in the rainiest, in the transitional and in the less rainy season. Air temperature and humidity were consistently high, but the animals did not show thermal stress in any season. The scrotal temperature gradient of buffalo bulls using infrared thermography was described, and three parallel and decreasing thermal bands were characterised. Sperm quality (n = 176 ejaculates) was maintained in normal parameters over the periods. Pearson's coefficients showed that sperm volume and progressive motility were negatively correlated with ocular globe, epididymal tail and minimum scrotal temperatures (p < .01). Sperm membrane integrity was negatively influenced by increases in epididymal tail and minimum scrotal temperatures (p < .01). Ocular globe temperature also showed positive correlation with rectal, spermatic cord, and epididymal tail temperatures (p < .01). Therefore, even under high temperature and humidity, the thermoregulatory system was effective in preventing heat stress and the normality of scrotal surface temperatures, spermatogenesis and sperm maturation were maintained. 650 $aBubalus Bubalis 650 $aSêmen 650 $aTemperatura 653 $aBubalino 653 $aEscroto 653 $aTemperaturas escrotais 653 $aTermografia infravermelha 700 1 $aSOUSA, J. S. 700 1 $aSILVA, A. O. A. 700 1 $aLOURENÇO JUNIOR, J. B. 700 1 $aFATURI, C. 700 1 $aMARTORANO, L. G. 700 1 $aFRANCO, I. M. 700 1 $aPANTOJA, M. H. A. 700 1 $aBARROS, D. V. 700 1 $aGARCIA, A. R. 773 $tAndrologia$gv. 50, n. 2, e12836, Mar. 2018.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Amazônia Oriental (CPATU) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Expressão de busca inválida. Verifique!!! |
|
|