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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
12/08/1999 |
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Data da última atualização: |
12/08/1999 |
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Autoria: |
RYAN, P. R.; DITOMASO, J. M.; KOCHIAN, L. V. |
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Afiliação: |
U.S. Plant Soil and Nutrition Laboratory, USDA-ARS, Cornell University, Ithaca, NY 14853, USA; Department of Soil Crop and Atmospheric Sciences, Cornell University, Ithaca, NY 1453, USA. |
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Título: |
Aluminium toxicity in roots: an investigation of spatial sensitivity and the role of the root cap |
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Ano de publicação: |
1993 |
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Fonte/Imprenta: |
Journal of Experimental Botany, v.44, n.259, p.437-446, 1993 |
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Idioma: |
Inglês |
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Conteúdo: |
The primary symptom of aluminium (Al) toxicity in higher plants is inhibition of root growth. In this study, we investigated the spatial sensitivity of maize (Zea mays L.) roots to Al. A divided-chamber technique indicated that only exposure of the terminal 10 to 15mm of the root to Al resulted in inhibition of growth. Application of Al to all but this apical region of the root had little or no effect on growth for 24h and caused minimal damage to the root tissue. Small agar blocks infused with Al were then applied to discrete areas of the apex of maize roots to determine which section (root cap, meristem or elongation zone) was more important to Al-induced inhibition of growth. The terminal 2.0 to 3.0mm of root (root cap and meristem) must be exposed to Al for inhibition. Application of Al to the 3.0mm of root proximal to this terminal zone (elongation zone) resulted in damage to the root tissue but no significant inhibition of growth. |
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Palavras-Chave: |
Aluminium. |
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Thesaurus Nal: |
root cap; root growth; toxicity. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01496naa a2200193 a 4500
001 1648241
005 1999-08-12
008 1993 bl --- 0-- u #d
100 1 $aRYAN, P. R.
245 $aAluminium toxicity in roots$ban investigation of spatial sensitivity and the role of the root cap
260 $c1993
520 $aThe primary symptom of aluminium (Al) toxicity in higher plants is inhibition of root growth. In this study, we investigated the spatial sensitivity of maize (Zea mays L.) roots to Al. A divided-chamber technique indicated that only exposure of the terminal 10 to 15mm of the root to Al resulted in inhibition of growth. Application of Al to all but this apical region of the root had little or no effect on growth for 24h and caused minimal damage to the root tissue. Small agar blocks infused with Al were then applied to discrete areas of the apex of maize roots to determine which section (root cap, meristem or elongation zone) was more important to Al-induced inhibition of growth. The terminal 2.0 to 3.0mm of root (root cap and meristem) must be exposed to Al for inhibition. Application of Al to the 3.0mm of root proximal to this terminal zone (elongation zone) resulted in damage to the root tissue but no significant inhibition of growth.
650 $aroot cap
650 $aroot growth
650 $atoxicity
653 $aAluminium
700 1 $aDITOMASO, J. M.
700 1 $aKOCHIAN, L. V.
773 $tJournal of Experimental Botany$gv.44, n.259, p.437-446, 1993
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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| Registros recuperados : 5 | |
| 3. |  | PEREIRA, J. F.; ZHOU, G.; DELHAIZE, E.; RICHARDSON, T.; ZHOU, M.; RYAN, P. R. Engineering greater aluminium resistance in wheat by over-expressing TaALMT1. Annals of Botany, v. 106, n. 1, p. 205-214, 2010.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Trigo. |
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| 4. | | ZHOU, G.; PEREIRA, J. F.; DELHAIZE, E.; ZHOU, M.; MAGALHAES, J. V.; RYAN, P. R. Enhancing the aluminium tolerance of barley by expressing the citrate transporter genes SbMATE and FRD3. Journal of Experimental Botany, London, v. 65, n. 9, p. 2381-2390, 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Milho e Sorgo; Embrapa Trigo. |
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| 5. | | MINELLA, E.; FERREIRA, J. R.; PEREIRA, J. F.; RYAN, P. R.; DELHAIZE, E.; DELATORRE, C. A. Improvements in acid soil tolerance of Brazilian barley will require new allelic combinations. In: INTERNATIONAL BARLEY GENETICS SYMPOSIUM, 12., 2016, Minneapolis. Abstracts... Minneapolis: University of Minnesota, 2016. Section Abiotic stresses, poster 126.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Trigo. |
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| Registros recuperados : 5 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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