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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
31/07/2014 |
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Data da última atualização: |
31/07/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
RIBEIRO, R. C.; MATIAS, J. R.; PELACANI, C. R.; DANTAS, B. F. |
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Afiliação: |
RENATA CONDURU RIBEIRO; JANETE RODRIGUES MATIAS; CLAUDINÉIA REGINA PELACANI; BARBARA FRANCA DANTAS, CPATSA. |
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Título: |
Activity of antioxidant enzymes and proline accumulation in Erythrina velutina Willd. seeds subjected to abiotic stresses during germination. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Journal of Seed Science, v. 36, n. 2, p. 231-239, 2014. |
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DOI: |
10.1590/2317-1545v32n2956 |
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Idioma: |
Inglês |
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Conteúdo: |
The aim of this study was to evaluate the effect of different abiotic stresses on the activity of antioxidant enzymes and on accumulation of proline in Erythrina velutina Willd. seeds during germination. Mulungu seeds were scarified
and placed to germinate at constant temperatures of 15, 25, and 35 °C, moistened with distilled water, and exposed to 12 h of light. Other seeds were exposed to solutions of NaCl (EC of 0, 4, and 8 dS.m-1) and polyethylene glycol (osmotic potentials of 0.0, -0.2, and - 0.6 MPa) and maintained in a germination chamber set at 25 °C and 12 h photoperiod for seven days. At the end of each period of imbibition, the embryonic axis and cotyledons of the seedlings were collected separately and used to quantify proline content and the activity of antioxidant enzymes. These were detected in both the cotyledons and embryonic axis of the mulungu seeds. Antioxidant activity varied depending upon the type and degree of stress applied. It was concluded that under the aspect of the detoxification process, the mechanism found in mulungu seeds is more efficient when subjected to different temperatures followed by salt stress and water stress. |
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Palavras-Chave: |
Antioxidative metabolism; Estresse abiótico. |
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Thesagro: |
Caatinga; Germinação; Mulungu; Semente. |
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Thesaurus Nal: |
Erythrina velutina; Water stress. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/105776/1/Barbara-3.pdf
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Marc: |
LEADER 01998naa a2200265 a 4500
001 1991571
005 2014-07-31
008 2014 bl uuuu u00u1 u #d
024 7 $a10.1590/2317-1545v32n2956$2DOI
100 1 $aRIBEIRO, R. C.
245 $aActivity of antioxidant enzymes and proline accumulation in Erythrina velutina Willd. seeds subjected to abiotic stresses during germination.$h[electronic resource]
260 $c2014
520 $aThe aim of this study was to evaluate the effect of different abiotic stresses on the activity of antioxidant enzymes and on accumulation of proline in Erythrina velutina Willd. seeds during germination. Mulungu seeds were scarified and placed to germinate at constant temperatures of 15, 25, and 35 °C, moistened with distilled water, and exposed to 12 h of light. Other seeds were exposed to solutions of NaCl (EC of 0, 4, and 8 dS.m-1) and polyethylene glycol (osmotic potentials of 0.0, -0.2, and - 0.6 MPa) and maintained in a germination chamber set at 25 °C and 12 h photoperiod for seven days. At the end of each period of imbibition, the embryonic axis and cotyledons of the seedlings were collected separately and used to quantify proline content and the activity of antioxidant enzymes. These were detected in both the cotyledons and embryonic axis of the mulungu seeds. Antioxidant activity varied depending upon the type and degree of stress applied. It was concluded that under the aspect of the detoxification process, the mechanism found in mulungu seeds is more efficient when subjected to different temperatures followed by salt stress and water stress.
650 $aErythrina velutina
650 $aWater stress
650 $aCaatinga
650 $aGerminação
650 $aMulungu
650 $aSemente
653 $aAntioxidative metabolism
653 $aEstresse abiótico
700 1 $aMATIAS, J. R.
700 1 $aPELACANI, C. R.
700 1 $aDANTAS, B. F.
773 $tJournal of Seed Science$gv. 36, n. 2, p. 231-239, 2014.
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Embrapa Semiárido (CPATSA) |
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