| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Café. Para informações adicionais entre em contato com biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Café. |
|
Data corrente: |
17/03/2011 |
|
Data da última atualização: |
28/10/2011 |
|
Tipo da produção científica: |
Artigo em Anais de Congresso |
|
Autoria: |
SILVESTRINI, M.; RAMIRO, D. A.; GUERREIRO-FILHO, O.; MALUF, M. P. |
|
Afiliação: |
Coffee Center "Alcides Carvalho"; IAC; IAC; MIRIAN PEREZ MALUF, SAPC. |
|
Título: |
Defense-related gene expression in response to leaf-miner infection. |
|
Ano de publicação: |
2008 |
|
Fonte/Imprenta: |
In: INTERNATIONAL CONFERENCE ON COFFEE SCIENCE, 22., 2008, Campinas. |
|
Idioma: |
Inglês |
|
Conteúdo: |
In Brazilian coffee plantations, the leaf-miner (Leucoptera coffeella) represents a major threat. Insect control is mainly based on the use of pesticides, as resistant cultivars are not yet available. However, the coffee breeding program of IAC has already selected promising genotypes bearing resistance to the leaf-miner, which was transferred from the diploid species Coffea racemosa. In order to characterize molecular aspects of defense mechanisms associated to the resistance response, expression of key genes was evaluated in coffee leaves, from both resistant and susceptible plants, in response to leaf-miner infection. Infected leavesb were collected at different time-intervals during insect development. Defense-related genes were identified in the Coffee Genome Database, through Blast searches. Gene specific primers were used to amplify corresponding transcripts on sampled leaves using a quantitative RT-PCR approach. Results indicated that there are no significant differences in the expression patterns of evaluated genes when comparing resistant and susceptible infected leaves. Major differences were observed for lipoxygenase, glutathione transferase, protein-kinase receptor and glucanase. However, these differences are mainly associated with expression timing along insect infection rather than with gene regulation, suggesting that resistance to leafminer in coffee may be associated with a previously built basal defense-response. |
|
Thesagro: |
Leucoptera Coffeella. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01958nam a2200157 a 4500
001 1881314
005 2011-10-28
008 2008 bl uuuu u00u1 u #d
100 1 $aSILVESTRINI, M.
245 $aDefense-related gene expression in response to leaf-miner infection.$h[electronic resource]
260 $aIn: INTERNATIONAL CONFERENCE ON COFFEE SCIENCE, 22., 2008, Campinas.$c2008
520 $aIn Brazilian coffee plantations, the leaf-miner (Leucoptera coffeella) represents a major threat. Insect control is mainly based on the use of pesticides, as resistant cultivars are not yet available. However, the coffee breeding program of IAC has already selected promising genotypes bearing resistance to the leaf-miner, which was transferred from the diploid species Coffea racemosa. In order to characterize molecular aspects of defense mechanisms associated to the resistance response, expression of key genes was evaluated in coffee leaves, from both resistant and susceptible plants, in response to leaf-miner infection. Infected leavesb were collected at different time-intervals during insect development. Defense-related genes were identified in the Coffee Genome Database, through Blast searches. Gene specific primers were used to amplify corresponding transcripts on sampled leaves using a quantitative RT-PCR approach. Results indicated that there are no significant differences in the expression patterns of evaluated genes when comparing resistant and susceptible infected leaves. Major differences were observed for lipoxygenase, glutathione transferase, protein-kinase receptor and glucanase. However, these differences are mainly associated with expression timing along insect infection rather than with gene regulation, suggesting that resistance to leafminer in coffee may be associated with a previously built basal defense-response.
650 $aLeucoptera Coffeella
700 1 $aRAMIRO, D. A.
700 1 $aGUERREIRO-FILHO, O.
700 1 $aMALUF, M. P.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Café (CNPCa) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Acesso ao texto completo restrito à biblioteca da Embrapa Suínos e Aves. Para informações adicionais entre em contato com cnpsa.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Suínos e Aves. |
|
Data corrente: |
31/03/2015 |
|
Data da última atualização: |
09/04/2015 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 2 |
|
Autoria: |
MAZZUCO, H.; BERTECHINI, A. G. |
|
Afiliação: |
HELENICE MAZZUCO, CNPSA; ANTONIO GILBERTO BERTECHINI, UFLA. |
|
Título: |
Critical points on egg production: causes, importance and incidence of eggshell breakage and defects |
|
Ano de publicação: |
2014 |
|
Fonte/Imprenta: |
Ciência e Agrotecnologia, v. 38, n. 1, p. 7-14, 2014. |
|
Idioma: |
Inglês |
|
Conteúdo: |
The occurrence of broken eggs directly depends on the quality of the shell. It is important to consider that the problem of broken eggs is not due to a single factor but a combination of factors. Shell defects, irregularities in shell shape, texture and surface are commonly observed during a regular egg laying cycle and the causes are varied. The incidence of downgraded eggs still represents an important source of economic loss for the egg industry due to products damage and need for further processing. It is possible to obtain significant reduction in the number of eggs lost due to the inferior quality of the shell attempting to an adequate nutrition, disease control, good management practices, and use of genetic lines with higher quality eggshell traits. |
|
Palavras-Chave: |
Cadeia de ovos comerciais; Casca do ovo. |
|
Thesagro: |
Poedeira comercial. |
|
Thesaurus NAL: |
Egg industry; Egg quality; Laying hens. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01390naa a2200205 a 4500
001 2012496
005 2015-04-09
008 2014 bl uuuu u00u1 u #d
100 1 $aMAZZUCO, H.
245 $aCritical points on egg production$bcauses, importance and incidence of eggshell breakage and defects$h[electronic resource]
260 $c2014
520 $aThe occurrence of broken eggs directly depends on the quality of the shell. It is important to consider that the problem of broken eggs is not due to a single factor but a combination of factors. Shell defects, irregularities in shell shape, texture and surface are commonly observed during a regular egg laying cycle and the causes are varied. The incidence of downgraded eggs still represents an important source of economic loss for the egg industry due to products damage and need for further processing. It is possible to obtain significant reduction in the number of eggs lost due to the inferior quality of the shell attempting to an adequate nutrition, disease control, good management practices, and use of genetic lines with higher quality eggshell traits.
650 $aEgg industry
650 $aEgg quality
650 $aLaying hens
650 $aPoedeira comercial
653 $aCadeia de ovos comerciais
653 $aCasca do ovo
700 1 $aBERTECHINI, A. G.
773 $tCiência e Agrotecnologia$gv. 38, n. 1, p. 7-14, 2014.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Suínos e Aves (CNPSA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
