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Registro Completo |
Biblioteca(s): |
Embrapa Amapá; Embrapa Amazônia Ocidental; Embrapa Milho e Sorgo. |
Data corrente: |
23/01/2006 |
Data da última atualização: |
05/06/2019 |
Autoria: |
CASTRO, C. E. F. de; CARBONELL, S. A. M.; MAIA, M. S. D.; BUCHELE, F. A. |
Afiliação: |
CONSEPA- Conselho Nacional dos Sistemas Estaduais de Pesquisa Agropecuária, DF. E-mail: consepa@consepa.org.br. |
Título: |
Agroindústria familiar. |
Ano de publicação: |
2005 |
Fonte/Imprenta: |
Campinas: CONSEPA, 2005. |
Páginas: |
75 p. |
Série: |
(CONSEPA- Série Reuniões Técnicas). |
Idioma: |
Português |
Conteúdo: |
Apresentação; Diagnóstico do setor; Diagnóstico da pesquisa; Proposições das organizações de pesquisa agropecuária; Endereço das organizações de pesquisa agropecuária. |
Palavras-Chave: |
Agroindústria familiar; Pesquisa agropecuária. |
Thesagro: |
Agricultura Familiar. |
Thesaurus Nal: |
agribusiness. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00756nam a2200217 a 4500 001 1349133 005 2019-06-05 008 2005 bl uuuu 00u1 u #d 100 1 $aCASTRO, C. E. F. de 245 $aAgroindústria familiar. 260 $aCampinas: CONSEPA$c2005 300 $a75 p. 490 $a(CONSEPA- Série Reuniões Técnicas). 520 $aApresentação; Diagnóstico do setor; Diagnóstico da pesquisa; Proposições das organizações de pesquisa agropecuária; Endereço das organizações de pesquisa agropecuária. 650 $aagribusiness 650 $aAgricultura Familiar 653 $aAgroindústria familiar 653 $aPesquisa agropecuária 700 1 $aCARBONELL, S. A. M. 700 1 $aMAIA, M. S. D. 700 1 $aBUCHELE, F. A.
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Embrapa Amapá (CPAF-AP) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Semiárido. Para informações adicionais entre em contato com cpatsa.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Mandioca e Fruticultura; Embrapa Semiárido. |
Data corrente: |
11/05/2020 |
Data da última atualização: |
19/11/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
MORGANTE, C. V.; NUNES, S. L. P.; CHAVES, A. R. de M.; FERREIRA, C. F.; AIDAR, S. de T.; VITOR, A. B.; OLIVEIRA, E. J. de. |
Afiliação: |
CAROLINA VIANNA MORGANTE, CPATSA; SÁVIO LUIZ PEREIRA NUNES, Univasf; AGNALDO RODRIGUES DE MELO CHAVES, CPATSA; CLAUDIA FORTES FERREIRA, CNPMF; SAULO DE TARSO AIDAR, CPATSA; ALISON BORGES VITOR, UFRB; EDER JORGE DE OLIVEIRA, CNPMF. |
Título: |
Genetic and physiological analysis of early drought response in Manihot esculenta and its wild relative. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Acta Physiologiae Plantarum, v. 42, 2020. |
DOI: |
https://doi.org/10.1007/s11738-019-3005-8 |
Idioma: |
Inglês |
Conteúdo: |
Cassava (Manihot esculenta) is a staple food crop mostly grown in the tropics. Successful cultivation in marginal areas derives from its ability to withstand difficult environmental conditions. Aiming at providing new insights into drought tolerance in Manihot spp., we performed physiological and molecular analyses of early drought response in three cassava varieties and in the wild species, Manihot glaziovii (maniçoba). Plants grown in pots were subjected to three water regimes for 5 days, based on soil field capacity (FC): 75% (well-watered plants); 45% (moderately stressed plants), and 20% (severely stressed plants), under greenhouse condition. Analysis of leaf gas exchange showed a downward trend in photosynthesis, stomatal conductance, and transpiration, with intensification of the stress, in all genotypes, being significantly reduced only at 20% FC. Maniçoba stood out for maintaining a positive carbon balance in severe stress condition via stomatal aperture control. Photoinhibition of the photosystem II by drought was also evident only at 20% FC. There was no clear association between proline accumulation and drought stress tolerance. Expression analysis of nine genes encoding heat-shock proteins, transcription factors, a cell redox homeostasis protein, and a no-hit protein confirmed the activation of classical stress-responsive pathways, especially those involved in oxidative damage avoidance. These results reinforce the intrinsic drought tolerance of cassava, highlight the superior performance of maniçoba under water deficit conditions, and give insights into drought phenotyping in cassava and contribute to further development of functional molecular markers to be used in assisted breeding. MenosCassava (Manihot esculenta) is a staple food crop mostly grown in the tropics. Successful cultivation in marginal areas derives from its ability to withstand difficult environmental conditions. Aiming at providing new insights into drought tolerance in Manihot spp., we performed physiological and molecular analyses of early drought response in three cassava varieties and in the wild species, Manihot glaziovii (maniçoba). Plants grown in pots were subjected to three water regimes for 5 days, based on soil field capacity (FC): 75% (well-watered plants); 45% (moderately stressed plants), and 20% (severely stressed plants), under greenhouse condition. Analysis of leaf gas exchange showed a downward trend in photosynthesis, stomatal conductance, and transpiration, with intensification of the stress, in all genotypes, being significantly reduced only at 20% FC. Maniçoba stood out for maintaining a positive carbon balance in severe stress condition via stomatal aperture control. Photoinhibition of the photosystem II by drought was also evident only at 20% FC. There was no clear association between proline accumulation and drought stress tolerance. Expression analysis of nine genes encoding heat-shock proteins, transcription factors, a cell redox homeostasis protein, and a no-hit protein confirmed the activation of classical stress-responsive pathways, especially those involved in oxidative damage avoidance. These results reinforce the intrinsic drought tolerance of cassava, highlig... Mostrar Tudo |
Palavras-Chave: |
Análise de expressão gênica; Déficit hídrico; RT-qPCR. |
Thesagro: |
Mandioca; Manihot Esculenta; Melhoramento Genético Vegetal. |
Thesaurus NAL: |
Cassava. |
Categoria do assunto: |
-- G Melhoramento Genético |
Marc: |
LEADER 02618naa a2200289 a 4500 001 2123537 005 2020-11-19 008 2020 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1007/s11738-019-3005-8$2DOI 100 1 $aMORGANTE, C. V. 245 $aGenetic and physiological analysis of early drought response in Manihot esculenta and its wild relative.$h[electronic resource] 260 $c2020 520 $aCassava (Manihot esculenta) is a staple food crop mostly grown in the tropics. Successful cultivation in marginal areas derives from its ability to withstand difficult environmental conditions. Aiming at providing new insights into drought tolerance in Manihot spp., we performed physiological and molecular analyses of early drought response in three cassava varieties and in the wild species, Manihot glaziovii (maniçoba). Plants grown in pots were subjected to three water regimes for 5 days, based on soil field capacity (FC): 75% (well-watered plants); 45% (moderately stressed plants), and 20% (severely stressed plants), under greenhouse condition. Analysis of leaf gas exchange showed a downward trend in photosynthesis, stomatal conductance, and transpiration, with intensification of the stress, in all genotypes, being significantly reduced only at 20% FC. Maniçoba stood out for maintaining a positive carbon balance in severe stress condition via stomatal aperture control. Photoinhibition of the photosystem II by drought was also evident only at 20% FC. There was no clear association between proline accumulation and drought stress tolerance. Expression analysis of nine genes encoding heat-shock proteins, transcription factors, a cell redox homeostasis protein, and a no-hit protein confirmed the activation of classical stress-responsive pathways, especially those involved in oxidative damage avoidance. These results reinforce the intrinsic drought tolerance of cassava, highlight the superior performance of maniçoba under water deficit conditions, and give insights into drought phenotyping in cassava and contribute to further development of functional molecular markers to be used in assisted breeding. 650 $aCassava 650 $aMandioca 650 $aManihot Esculenta 650 $aMelhoramento Genético Vegetal 653 $aAnálise de expressão gênica 653 $aDéficit hídrico 653 $aRT-qPCR 700 1 $aNUNES, S. L. P. 700 1 $aCHAVES, A. R. de M. 700 1 $aFERREIRA, C. F. 700 1 $aAIDAR, S. de T. 700 1 $aVITOR, A. B. 700 1 $aOLIVEIRA, E. J. de 773 $tActa Physiologiae Plantarum$gv. 42, 2020.
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