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Registro Completo |
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Biblioteca(s): |
Embrapa Meio-Norte. |
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Data corrente: |
11/04/1997 |
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Data da última atualização: |
11/04/1997 |
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Autoria: |
ORTIZ, A.; MARTINEZ, V.; CERDA, A. |
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Título: |
Effects of osmotic shock and calcium on growth and solute composition of Phaseolus vulgaris plants. |
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Ano de publicação: |
1994 |
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Fonte/Imprenta: |
Physiologia Plantarum, v. 91 n. 3, p. 468-476, 1994. |
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Idioma: |
Inglês |
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Conteúdo: |
Identification of the primary response to salinity is of great importance in order to develop salt tolerant species. In this work the effect of a NaCl osmotic shock on leaf elongation of Phaseolus vulgaris L. cv. Contender has been studied. After establishing an osmotic shock by adding NaCl to the root medium three consecutive events could be distinguished. First, there was a sudden interruption of leaf growth, followed by a period of retardation of growth, to reach the steady-state growth rate. High calcium (5 mM) in the growth medium diminished the initial loss of water in the roots and kept the water content higher upon restoration of leaf growth, as compared to low calcium levels (0,5 mM). During the low calcium treatment, leaf malate started to increase already 3 h after the start of the osmotic treatment, showing a maximum concentration at around 9 h, then decreasing and approaching the value of control plants. At high calcium, malate concentration remained unchanged with time. Plants grown in the presence of low calcium showed an increase in the concentration of total amino acids upon NaCl shock. It is estimated that organic metabolites, in confined to the cell cytoplasm, contribute significantly to the osmotic adjustment, together with inorganic ions. Our results support the hypothesis that water shortage in the roots is responsible for the initial inhibition of leaf elongation. |
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Palavras-Chave: |
Bean; GLC; Mineral nutrition; Nutricao mineral; Organic solutes. |
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Thesagro: |
Feijão; Osmose; Phaseolus Vulgaris; Salinidade. |
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Thesaurus Nal: |
salinity. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02112naa a2200265 a 4500
001 1053233
005 1997-04-11
008 1994 bl --- 0-- u #d
100 1 $aORTIZ, A.
245 $aEffects of osmotic shock and calcium on growth and solute composition of Phaseolus vulgaris plants.
260 $c1994
520 $aIdentification of the primary response to salinity is of great importance in order to develop salt tolerant species. In this work the effect of a NaCl osmotic shock on leaf elongation of Phaseolus vulgaris L. cv. Contender has been studied. After establishing an osmotic shock by adding NaCl to the root medium three consecutive events could be distinguished. First, there was a sudden interruption of leaf growth, followed by a period of retardation of growth, to reach the steady-state growth rate. High calcium (5 mM) in the growth medium diminished the initial loss of water in the roots and kept the water content higher upon restoration of leaf growth, as compared to low calcium levels (0,5 mM). During the low calcium treatment, leaf malate started to increase already 3 h after the start of the osmotic treatment, showing a maximum concentration at around 9 h, then decreasing and approaching the value of control plants. At high calcium, malate concentration remained unchanged with time. Plants grown in the presence of low calcium showed an increase in the concentration of total amino acids upon NaCl shock. It is estimated that organic metabolites, in confined to the cell cytoplasm, contribute significantly to the osmotic adjustment, together with inorganic ions. Our results support the hypothesis that water shortage in the roots is responsible for the initial inhibition of leaf elongation.
650 $asalinity
650 $aFeijão
650 $aOsmose
650 $aPhaseolus Vulgaris
650 $aSalinidade
653 $aBean
653 $aGLC
653 $aMineral nutrition
653 $aNutricao mineral
653 $aOrganic solutes
700 1 $aMARTINEZ, V.
700 1 $aCERDA, A.
773 $tPhysiologia Plantarum$gv. 91 n. 3, p. 468-476, 1994.
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Registro original: |
Embrapa Meio-Norte (CPAMN) |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo; Embrapa Tabuleiros Costeiros. |
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Data corrente: |
15/03/2010 |
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Data da última atualização: |
29/05/2018 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
ARAÚJO, B. H.; COSTA, R. V. da; COTA, L. V.; GUIMARAES, L. J. M.; GUIMARAES, P. E. de O.; PARENTONI, S. N.; PACHECO, C. A. P.; SILVA, A. R. da; SILVA, O. A. da. |
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Afiliação: |
Breno Henrique Araújo, FEAD; RODRIGO VERAS DA COSTA, CNPMS; LUCIANO VIANA COTA, CNPMS; LAURO JOSE MOREIRA GUIMARAES, CNPMS; PAULO EVARISTO DE O GUIMARAES, CNPMS; SIDNEY NETTO PARENTONI, CNPMS; CLESO ANTONIO PATTO PACHECO, CNPMS; ADELMO RESENDE DA SILVA, CNPMS; Osni Alves da Silva, CNPMS. |
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Título: |
Avaliação de linhagens de milho quanto à ocorrência de grãos ardidos. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
In: SEMANA ACADÊMICA EMBRAPA MILHO E SORGO, 1., 2009, Sete Lagoas. [Resumos]. Sete Lagoas: Embrapa Milho e Sorgo, 2009. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Português |
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Thesagro: |
Linhagem; Milho; Resistência; Zea mays. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/29877/1/Avaliacao-linhagens.pdf
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Marc: |
LEADER 00796nam a2200253 a 4500
001 1661169
005 2018-05-29
008 2009 bl uuuu u00u1 u #d
100 1 $aARAÚJO, B. H.
245 $aAvaliação de linhagens de milho quanto à ocorrência de grãos ardidos.$h[electronic resource]
260 $aIn: SEMANA ACADÊMICA EMBRAPA MILHO E SORGO, 1., 2009, Sete Lagoas. [Resumos]. Sete Lagoas: Embrapa Milho e Sorgo$c2009
300 $c1 CD-ROM.
650 $aLinhagem
650 $aMilho
650 $aResistência
650 $aZea mays
700 1 $aCOSTA, R. V. da
700 1 $aCOTA, L. V.
700 1 $aGUIMARAES, L. J. M.
700 1 $aGUIMARAES, P. E. de O.
700 1 $aPARENTONI, S. N.
700 1 $aPACHECO, C. A. P.
700 1 $aSILVA, A. R. da
700 1 $aSILVA, O. A. da
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Embrapa Milho e Sorgo (CNPMS) |
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