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| Registros recuperados : 3 | |
| Registros recuperados : 3 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
28/09/2012 |
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Data da última atualização: |
18/05/2023 |
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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: |
MENDES, A. F. S.; CIDADE, L. C.; OTONI, W. C.; SOARES FILHO, W. dos S.; COSTA, M. G. C. |
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Afiliação: |
A. F. S. MENDES, UESC; L. C. CIDADE, UESC; W. C. OTONI, UFV; WALTER DOS SANTOS SOARES FILHO, CNPMF; M. G. C. COSTA, UESC. |
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Título: |
Role of auxins, polyamines and ethylene in root formation and growth in sweet orange. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Biologia Plantarum, v. 55, n. 2, p. 375-378, 2011. |
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ISSN: |
0006-3134 |
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Idioma: |
Inglês |
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Conteúdo: |
The primary objective of this work was to investigate the role of polyamines (PAs) on root formation and growth in two sweet orange (Citrus sinensis L. Osb.) cultivars Pineapple and Pêra. Adventitious shoots (30-d-old) derived from epicotyl explants were transferred to root induction medium containing Murashige and Skoog salts at different strengths and supplemented with different concentrations and combinations of auxins. Root formation and development decreased in both sweet orange cultivars concomitant with the reduction of medium strength. The ?-aphtaleneacetic acid was important during the root differentiation phase, but its combination with indole-3-butyric acid was essential for root elongation. The addition of PAs significantly improved root formation and/or growth, depending on their concentration, whereas the presence of inhibitor of PAs biosynthesis ?-difluoromethylornithine (DFMO) inhibited these processes. The rooting impairment caused by DFMO was partially reversed by the supplementation of putrescine. Aminoethoxyvinylglycine AVG and AgNO3 also inhibited in vitro rooting in both sweet orange cultivars, indicating that ethylene was likewise important for rhizogenesis in sweet orange. |
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Thesagro: |
Citrus Sinensis. |
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Thesaurus NAL: |
putrescine; rooting; spermidine; spermine. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 01893naa a2200241 a 4500
001 1934982
005 2023-05-18
008 2011 bl uuuu u00u1 u #d
022 $a0006-3134
100 1 $aMENDES, A. F. S.
245 $aRole of auxins, polyamines and ethylene in root formation and growth in sweet orange.$h[electronic resource]
260 $c2011
520 $aThe primary objective of this work was to investigate the role of polyamines (PAs) on root formation and growth in two sweet orange (Citrus sinensis L. Osb.) cultivars Pineapple and Pêra. Adventitious shoots (30-d-old) derived from epicotyl explants were transferred to root induction medium containing Murashige and Skoog salts at different strengths and supplemented with different concentrations and combinations of auxins. Root formation and development decreased in both sweet orange cultivars concomitant with the reduction of medium strength. The ?-aphtaleneacetic acid was important during the root differentiation phase, but its combination with indole-3-butyric acid was essential for root elongation. The addition of PAs significantly improved root formation and/or growth, depending on their concentration, whereas the presence of inhibitor of PAs biosynthesis ?-difluoromethylornithine (DFMO) inhibited these processes. The rooting impairment caused by DFMO was partially reversed by the supplementation of putrescine. Aminoethoxyvinylglycine AVG and AgNO3 also inhibited in vitro rooting in both sweet orange cultivars, indicating that ethylene was likewise important for rhizogenesis in sweet orange.
650 $aputrescine
650 $arooting
650 $aspermidine
650 $aspermine
650 $aCitrus Sinensis
700 1 $aCIDADE, L. C.
700 1 $aOTONI, W. C.
700 1 $aSOARES FILHO, W. dos S.
700 1 $aCOSTA, M. G. C.
773 $tBiologia Plantarum$gv. 55, n. 2, p. 375-378, 2011.
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Embrapa Mandioca e Fruticultura (CNPMF) |
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