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| Registros recuperados : 16 | |
| 3. |  | FERRI, V. C.; ROMBALDI, C. V. Resfriamento rápido e armazenamento de caquis (Diospyrus kaki, L.), cv. Fuyu, em condições de atmosfera refrigerada e modificada. Revista Brasileira de Fruticultura, Jaboticabal, v. 26, n. 1, p. 36-39, 2004.| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 4. | | MANFROI, V.; GUERRA, C. C.; RIZZON, L. A.; ROMBALDI, C. V.; FERRI, V. Influência de taninos enológicos na qualidade de vinho tinto fino Cabernet Sauvignon. In: CONGRESSO LATINO-AMERICANO DE VITICULTURA E ENOLOGIA, 10.; CONGRESSO BRASILEIRO DE VITICULTURA E ENOLOGIA, 11.; SEMINÁRIO FRANCO-BRASILEIRO DE VITICULTURA E ENOLOGIA, 2., 2005, Bento Gonçalves. Anais... Bento Gonçalves: Embrapa Uva e Vinho, 2005. p. 300.| Biblioteca(s): Embrapa Uva e Vinho. |
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| 7. | | MATTIUZ, B.; FERRI, V. C.; FACHINELLO, J. C.; NEDEL, J. L. Efeitos do acido giberelico e da baixa temperatura na germinacao de sementes de kiwi (Actinidia deliciosa, A. Chev.) cultivar Bruno. Scientia Agricola, Piracicaba, SP, v.53, n.1, p.80-83, 1996.| Biblioteca(s): Embrapa Tabuleiros Costeiros. |
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| 9. | | SAMPAIO, R. G.; ANTES, S.; ROMBALDI, C. V.; FERRI, V. C.; FACHINELLO, J. C.; RIZZON, L. A. Characterization of Cabernet Sauvignon wine made with grapes from Campanha Region - RS. In: INTERNATIONAL SYMPOSIUM OF TEMPERATE ZONE FRUITS IN THE TROPICS AND SUBTROPICS, 8., 2007, Florianópolis. Program and abstracts. Pelotas: Embrapa Clima Temperado, 2007. p. 118. Resumo.| Biblioteca(s): Embrapa Uva e Vinho. |
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| 10. | | MANFROI, V.; RIZZON, L. A.; FIALHO, F. B.; AGNOL, I. D.; FERRI, V. C.; ROMBALDI, C. V. Influência de taninos enológicos em diferentes dosagens e épocas distintas de aplicação nas características físico-químicas do vinho Cabernet Sauvignon. Ciência e Tecnologia de Alimentos, Campinas, v. 30, p. 127-135, maio 2010. Suplemento.| Biblioteca(s): Embrapa Uva e Vinho. |
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| 11. | | SAMPAIO, R. G.; ANTES, S.; AZEVEDO, F. Q.; ROMBALDI, C. V.; FERRI, V. C.; RIZZON, L. A. Evolução da maturação da uva cvs. 'Tannat' e 'Cabernet Sauvignon' da região de Bagé/RS - safra 2007. In: CONGRESO LATINOAMERICANO DE VITICULTURA Y ENOLOGIA, 11., 2007, Mendoza. Seduciendo al consumidor de hoy: anales. [Mendoza: INV: CLEIFRA], 2007. 1 CD-ROM. Resumo.| Biblioteca(s): Embrapa Uva e Vinho. |
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| 12. | | EBERTHAMM, T. B.; ZANUZO, M. R.; LUCCHETTA, L.; FERRI, V. C.; ANTUNES, P. L.; GIRARDI, C. L.; FACHINELLO, J. C.; SILVA, J. A.; HOOKO, V.; ROMBALDI, C. V. Manejo do resfriamento e da classificação de Pêssegos cv Granada na ocorrência de podridões e qualidade para consumo. Revista Brasileira de Fruticultura, Jaboticabal, v. 30, n. 4, p. 885-891, 2008.[online]| Biblioteca(s): Embrapa Uva e Vinho. |
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| 13. | | MANFRÓI, V.; ZORZAN, C.; ZANUS, M. C.; GUERRA, C. C.; FIALHO, F. B.; AGNOL, I. D.; FERRI, V. C.; ROMBALDI, C. V. Capacidade antioxidante de vinhos tintos Cabernet Sauvignon tratados com taninos exógenos. In: CONGRESO LATINOAMERICANO DE VITICULTURA Y ENOLOGIA, 11., 2007, Mendoza. Seduciendo al consumidor de hoy: anales. [Mendoza: INV: CLEIFRA], 2007. 1 CD-ROM. Resumo.| Biblioteca(s): Embrapa Uva e Vinho. |
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| 14. | | FERRI, V. C.; ROMBALDI, C. V.; PEGORARO, C.; GONÇALVES, E. D.; SILVA, J. A.; NORA, L.; ANTUNES, P. L. T.; TIBOLA, C. S.; GIRARDI, C. L. Boron and calcium sprayed on 'Fuyu' persimmon tree prevent skin cracks, groove and browning of fruit during cold storage. In: INTERNATIONAL SYMPOSIUM OF TEMPERATE ZONE FRUITS IN THE TROPICS AND SUBTROPICS, 8., 2007, Florianópolis. Program and abstracts. Pelotas: Embrapa Clima Temperado, 2007. p. 83 Resumo.| Biblioteca(s): Embrapa Uva e Vinho. |
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| 15. | | FERRI, V. C.; ROMBALDI, C. V.; SILVA, J. A.; PEGORARO, C.; NORA, L.; ANTUNES, P. L.; GIRARDI, C. L.; TIBOLA, C. S. Boron and calcium sprayed on 'Fuyu' persimmon tree prevent skin cracks, groove and browning of fruit during cold storage. Ciência Rural, Santa Maria, v. 38, n. 8, p. 2146-2150, 2008.| Biblioteca(s): Embrapa Trigo; Embrapa Uva e Vinho. |
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| 16. | | PORTO, R. G.; BECKER, A.; MAYER, F. A.; LOSS, E. B.; ZANUSSO, J. T.; FLÁVIO, L. C.; GUICONI, L. A.; KUNN, M. S.; OLIVEIRA, G. M. de; FERRI, V. C.; SANTOS, R. A. dos. Hortas urbanas e periurbanas, individuais e coletivas. In: WOLFF, L. F.; EICHOLZ, E. D. (ed.). Alternativas para a diversificação da agricultura familiar de base ecológica - 2021. Pelotas: Embrapa Clima Temperado, 2021. 46 p. (Embrapa Clima Temperado. Documentos, 512). p. 36-37.| Biblioteca(s): Embrapa Clima Temperado. |
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| Registros recuperados : 16 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Milho e Sorgo. Para informações adicionais entre em contato com cnpms.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
06/10/2003 |
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Data da última atualização: |
05/06/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PINEROS, M. A.; MAGALHAES, J. V.; ALVES, V. M. C.; KOCHIAN, L. V. |
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Afiliação: |
JURANDIR VIEIRA DE MAGALHAES, CNPMS; VERA MARIA CARVALHO ALVES, CNPMS. |
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Título: |
The physiology and biophysics of an aluminum tolerance mechanism based on root citrate exudation in maize. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Plant Physiology, Bethesda, v. 129, p. 1194-1206, 2002. |
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Idioma: |
Inglês |
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Conteúdo: |
Al-induced release of Al-chelating ligands (primarily organic acids) into the rhizosphere from the root apex has been identified as a major Al tolerance mechanism in a number of plants species. In the present study, we conducted physiological investigations to study the spatial and temporal characteristcs of Al-activated root organic acid exudation, as well as changes in root organic acid content and Al accumulation, in an AL-tolerant maize (Zea mays) single cross (SLP 181/71 x Cateto Colombia 96/71). These investigations were integrated with biophysical studies using the patch-clamp technique to examine Al-activated anion channel activity in protoplasts isolated from different regions of the mazie root. Exposure to Al nearly instantaneously activated a concentration-dependent citrate release, which saturated at rates close to 0,5 nmol citrate h1 root -1. with the half-maximal rates of citrate release occurring at about 20 um Al3+ activity. Comparison of citrate exudation rates between decapped and capped roots indicated the root cap does not play a major role in perceiving the Al signal or in the exudation process. Spatial analysis indicated that the predominant citrate exudation is not confined to the root apex, but could be found as far as 5 cm beyond the root cap, involving cortex and stelar cells. Patch clamp recordings obtained in whole-cell and outside-out patches confirmed the presence of an Al-inducible plasma membrane anion channel in protoplasts isolated from stelar or cortical tissues. The unitary conductance of this channel was 23 to 55 pS. Our results suggest that this transporter mediates the Al-induced citrate release observed in the intact tissue. In addition to the rapid Al activation of citrate release , a slower, Al-inducible increase in root citrate content was also observed. These findings led us to speculate that in addition to the Al exclusion mechanism based on root citrate exudation, a second internal Al tolerance mechanism may be operating based on Al-inducible changes in organic acid synthesis and compartmentation. We discuss our findings in terms of recent genetic studies of Al tolerance in maize, which suggest that Al tolerance in maize is a complex trait. MenosAl-induced release of Al-chelating ligands (primarily organic acids) into the rhizosphere from the root apex has been identified as a major Al tolerance mechanism in a number of plants species. In the present study, we conducted physiological investigations to study the spatial and temporal characteristcs of Al-activated root organic acid exudation, as well as changes in root organic acid content and Al accumulation, in an AL-tolerant maize (Zea mays) single cross (SLP 181/71 x Cateto Colombia 96/71). These investigations were integrated with biophysical studies using the patch-clamp technique to examine Al-activated anion channel activity in protoplasts isolated from different regions of the mazie root. Exposure to Al nearly instantaneously activated a concentration-dependent citrate release, which saturated at rates close to 0,5 nmol citrate h1 root -1. with the half-maximal rates of citrate release occurring at about 20 um Al3+ activity. Comparison of citrate exudation rates between decapped and capped roots indicated the root cap does not play a major role in perceiving the Al signal or in the exudation process. Spatial analysis indicated that the predominant citrate exudation is not confined to the root apex, but could be found as far as 5 cm beyond the root cap, involving cortex and stelar cells. Patch clamp recordings obtained in whole-cell and outside-out patches confirmed the presence of an Al-inducible plasma membrane anion channel in protoplasts isolated from stel... Mostrar Tudo |
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Thesagro: |
Alumínio; Milho. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02777naa a2200181 a 4500
001 1487223
005 2018-06-05
008 2002 bl uuuu u00u1 u #d
100 1 $aPINEROS, M. A.
245 $aThe physiology and biophysics of an aluminum tolerance mechanism based on root citrate exudation in maize.$h[electronic resource]
260 $c2002
520 $aAl-induced release of Al-chelating ligands (primarily organic acids) into the rhizosphere from the root apex has been identified as a major Al tolerance mechanism in a number of plants species. In the present study, we conducted physiological investigations to study the spatial and temporal characteristcs of Al-activated root organic acid exudation, as well as changes in root organic acid content and Al accumulation, in an AL-tolerant maize (Zea mays) single cross (SLP 181/71 x Cateto Colombia 96/71). These investigations were integrated with biophysical studies using the patch-clamp technique to examine Al-activated anion channel activity in protoplasts isolated from different regions of the mazie root. Exposure to Al nearly instantaneously activated a concentration-dependent citrate release, which saturated at rates close to 0,5 nmol citrate h1 root -1. with the half-maximal rates of citrate release occurring at about 20 um Al3+ activity. Comparison of citrate exudation rates between decapped and capped roots indicated the root cap does not play a major role in perceiving the Al signal or in the exudation process. Spatial analysis indicated that the predominant citrate exudation is not confined to the root apex, but could be found as far as 5 cm beyond the root cap, involving cortex and stelar cells. Patch clamp recordings obtained in whole-cell and outside-out patches confirmed the presence of an Al-inducible plasma membrane anion channel in protoplasts isolated from stelar or cortical tissues. The unitary conductance of this channel was 23 to 55 pS. Our results suggest that this transporter mediates the Al-induced citrate release observed in the intact tissue. In addition to the rapid Al activation of citrate release , a slower, Al-inducible increase in root citrate content was also observed. These findings led us to speculate that in addition to the Al exclusion mechanism based on root citrate exudation, a second internal Al tolerance mechanism may be operating based on Al-inducible changes in organic acid synthesis and compartmentation. We discuss our findings in terms of recent genetic studies of Al tolerance in maize, which suggest that Al tolerance in maize is a complex trait.
650 $aAlumínio
650 $aMilho
700 1 $aMAGALHAES, J. V.
700 1 $aALVES, V. M. C.
700 1 $aKOCHIAN, L. V.
773 $tPlant Physiology, Bethesda$gv. 129, p. 1194-1206, 2002.
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