|
|
Registro Completo |
Biblioteca(s): |
Epagri-Sede. |
Data corrente: |
07/11/2011 |
Data da última atualização: |
07/11/2011 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
SCHEUERMANN, K. K.; BROMMONSCHENKEL, S. H. |
Afiliação: |
Epagri |
Título: |
A stronger and faster defense response is associated with age-related early blight resistance in tomato. |
Ano de publicação: |
2007 |
Fonte/Imprenta: |
In: INTERNATIONAL CONGRESS ON MOLECULAR PLANT-MICROBE INTERACTIONS, 13., 2007, Sorrento, Itália. [Proceedings...]. Itália: [s.n.], 2007. p. 321-322. |
Idioma: |
Inglês |
Conteúdo: |
The early blight, caused by the necrotrophic fungi Alternaria solani, is an important disease of the tomato, causing significant yield losses. The development of resistant cultivars has been difficult because the resistance is polygenic and germplasm with adequate levels of resistance is not available. In addition to, resistance is negatively correlated with physiological maturity and fruit load of the plant; older senescing leaves are more susceptible than immature leaves, and a high fruit set enhances the disease. In order to identify genes involved with quantitative resistance against A. solani, cDNA libraries were built using the suppressive subtraction hybridization technique (SSH). Sequence analysis of 1536 ESTs allowed the identification of cDNA clones with similarities with genes involved in plant defense, gene expression regulation and signals transducition pathways. Among the putative genes related with defense machanisms, there is a predominance of genes reported to be regulated by ethylene and jasmonic acid and a lower frequency of ESTs with similarity to genes known to be regulated by salicylic acid. Real time PCR analysis of selected genes revealed that 40% of them are induced in response to Alternaria solani. Transcripts of the majority of these genes were detected between 6 and 12 hai, reaching a maximum value between 24 and 36 hai. Several genes showed a high level of expression and a faster expression response in younger leaves where the disease is less severe. The higher level of defense gene expression associated whith a faster defense response can be one of the mechanisms responsible for the reduced level of early blight observed in yourger tomato leaves. MenosThe early blight, caused by the necrotrophic fungi Alternaria solani, is an important disease of the tomato, causing significant yield losses. The development of resistant cultivars has been difficult because the resistance is polygenic and germplasm with adequate levels of resistance is not available. In addition to, resistance is negatively correlated with physiological maturity and fruit load of the plant; older senescing leaves are more susceptible than immature leaves, and a high fruit set enhances the disease. In order to identify genes involved with quantitative resistance against A. solani, cDNA libraries were built using the suppressive subtraction hybridization technique (SSH). Sequence analysis of 1536 ESTs allowed the identification of cDNA clones with similarities with genes involved in plant defense, gene expression regulation and signals transducition pathways. Among the putative genes related with defense machanisms, there is a predominance of genes reported to be regulated by ethylene and jasmonic acid and a lower frequency of ESTs with similarity to genes known to be regulated by salicylic acid. Real time PCR analysis of selected genes revealed that 40% of them are induced in response to Alternaria solani. Transcripts of the majority of these genes were detected between 6 and 12 hai, reaching a maximum value between 24 and 36 hai. Several genes showed a high level of expression and a faster expression response in younger leaves where the disease is less sev... Mostrar Tudo |
Palavras-Chave: |
Alternaria solani; Early blight. |
Categoria do assunto: |
-- |
|
|
Marc: |
LEADER 02238naa a2200145 a 4500 001 1081821 005 2011-11-07 008 2007 bl uuuu u00u1 u #d 100 1 $aEpagri 245 $aA stronger and faster defense response is associated with age-related early blight resistance in tomato. 260 $c2007 520 $aThe early blight, caused by the necrotrophic fungi Alternaria solani, is an important disease of the tomato, causing significant yield losses. The development of resistant cultivars has been difficult because the resistance is polygenic and germplasm with adequate levels of resistance is not available. In addition to, resistance is negatively correlated with physiological maturity and fruit load of the plant; older senescing leaves are more susceptible than immature leaves, and a high fruit set enhances the disease. In order to identify genes involved with quantitative resistance against A. solani, cDNA libraries were built using the suppressive subtraction hybridization technique (SSH). Sequence analysis of 1536 ESTs allowed the identification of cDNA clones with similarities with genes involved in plant defense, gene expression regulation and signals transducition pathways. Among the putative genes related with defense machanisms, there is a predominance of genes reported to be regulated by ethylene and jasmonic acid and a lower frequency of ESTs with similarity to genes known to be regulated by salicylic acid. Real time PCR analysis of selected genes revealed that 40% of them are induced in response to Alternaria solani. Transcripts of the majority of these genes were detected between 6 and 12 hai, reaching a maximum value between 24 and 36 hai. Several genes showed a high level of expression and a faster expression response in younger leaves where the disease is less severe. The higher level of defense gene expression associated whith a faster defense response can be one of the mechanisms responsible for the reduced level of early blight observed in yourger tomato leaves. 653 $aAlternaria solani 653 $aEarly blight 773 $tIn: INTERNATIONAL CONGRESS ON MOLECULAR PLANT-MICROBE INTERACTIONS, 13., 2007, Sorrento, Itália. [Proceedings...]. Itália: [s.n.], 2007. p. 321-322.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Epagri-Sede (Epagri-Sede) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
|
Voltar
|
|
Registro Completo
Biblioteca(s): |
Epagri-Sede. |
Data corrente: |
15/09/2021 |
Data da última atualização: |
15/09/2021 |
Tipo da produção científica: |
Folder/Folheto/Cartilha |
Autoria: |
CONCEIÇÃO, G.; SILVA, M. M.; MONTEIRO, A. N. |
Título: |
DESCRIÇÃO DE EVENTO METEOROLÓGICO EXTREMO EM RIO DOS CEDROS - 21 A 22 JANEIRO 2021. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Florianópolis: Epagri, 2021. |
Páginas: |
10 p. |
Idioma: |
Português |
Conteúdo: |
Através da análise das informações apresentadas, sintetizadas nas Tabela 1 e Figura 2, é possível determinar que as condições atmosféricas predominantes em Rio dos Cedros, localizado na regional da Celesc ARBLU, nos dias 20 e 21/01/2021, favoreceram a ocorrência de chuva intensa e persistente, caracterizando-se como um evento extremo. Os principais sistemas atmosféricos associados ao evento foram um cavado, convergência de umidade sobre o Estado e jato de baixos níveis da atmosfera. Segundo o COBRADE o evento é classificado com o Código 1.3.2.1.4 (Tempestades locais). |
Palavras-Chave: |
Evento Meteorológico Extremo; Regional Celesc. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
|
|
Marc: |
LEADER 01093nam a2200169 a 4500 001 1131216 005 2021-09-15 008 2021 bl uuuu t 00u1 u #d 100 1 $aCONCEIÇÃO, G. 245 $aDESCRIÇÃO DE EVENTO METEOROLÓGICO EXTREMO EM RIO DOS CEDROS - 21 A 22 JANEIRO 2021.$h[electronic resource] 260 $aFlorianópolis: Epagri$c2021 300 $a10 p. 520 $aAtravés da análise das informações apresentadas, sintetizadas nas Tabela 1 e Figura 2, é possível determinar que as condições atmosféricas predominantes em Rio dos Cedros, localizado na regional da Celesc ARBLU, nos dias 20 e 21/01/2021, favoreceram a ocorrência de chuva intensa e persistente, caracterizando-se como um evento extremo. Os principais sistemas atmosféricos associados ao evento foram um cavado, convergência de umidade sobre o Estado e jato de baixos níveis da atmosfera. Segundo o COBRADE o evento é classificado com o Código 1.3.2.1.4 (Tempestades locais). 653 $aEvento Meteorológico Extremo 653 $aRegional Celesc 700 1 $aSILVA, M. M. 700 1 $aMONTEIRO, A. N.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Epagri-Sede (Epagri-Sede) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Nenhum registro encontrado para a expressão de busca informada. |
|
|