The effects of short and long term aluminium treatment on potassium fluxes in roots of an aluminium sensitive cultivar of barley

Nichol, Brian E.; Oliveira, Luis; Glass, Anthony D. M.; Siddiqi, M. Yaeesh

doi:10.1007/978-94-011-3438-5_83

Cited by 3 publications

(3 citation statements)

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“…Aluminium (100 µM) was found to inhibit the influx of the cations of calcium (69%), ammonium (40%) and potassium (13%) and enhance the influx of the anions of nitrate (44%) and phosphate (17%). Aluminium interfered with the binding of the cations in the cell wall by the same order of magnitude as their respective influxes whereas phosphate binding was strongly enhanced [144]. They also reported that aluminium was bound to the plasma membrane phospholipids, forming a positively charged layer that influenced ion movement to the binding sites of the transport proteins.…”

Section: Effect Of Aluminium On Metabolismmentioning

confidence: 97%

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Aluminium toxicity in plants: a review

2001

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Aluminium toxicity and problems concerning tolerance and ecological performance are discussed briefly. Differential tolerance of plant genotypes to aluminium stress is a more promising approach to increase our understanding of aluminium tolerance in plants. Induction of Al tolerance and its characterization are also reviewed. The cytogenetic effects of aluminium on plants are discussed in depth. Efforts have been made to compare the relative sensitivity of various plant species including micro-and macro-flora to aluminium, and uptake and transport of aluminium are taken into account with phytotoxicity and their interactions with nutrients. Present knowledge concerning the physiology and biochemistry of aluminium with regard to phytotoxicity is discussed and offers some ways for increasing the Al tolerance. This review shows the complexity of the toxicity mechanisms of trace elements. aluminium / phytotoxicity / tolerance / Al stress Résumé-Toxicité de l'aluminium pour les plantes : mise au point. L'article fait le point sur la toxicité de l'aluminium, la tolérance des plantes à cet élément et leur performances écologiques. La tolérance au stress provoqué par l'aluminium varie d'un génotype de plante à l'autre et cette approche est prometteuse pour améliorer notre compréhension de la tolérance à l'aluminium. L'induction de la tolérance à l'aluminium et sa caractérisation sont également passées en revue. Les effets cytogénétiques de l'aluminium sur les plantes font l'objet d'une discussion approfondie. On compare la sensibilité relative à l'aluminium des diverses espèces de plantes, de la macroflore à la microflore. On traite de l'absorption et du transport de l'aluminium, ainsi que de sa phytotoxicité et de ses interactions avec les nutriments. La connaissance actuelle concernant la physiologie et la biochimie de l'aluminium en relation avec la phytotoxicité est discutée et offre certaines possibilités pour accroître la tolérance à l'aluminium. Cette mise au point montre la complexité des mécanismes liés à la toxicité des éléments traces.

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Section: Effect Of Aluminium On Metabolismmentioning

confidence: 97%

“…Nichol and Oliveira [143] noted that Al 3+ reduced Ca 2+ influx in barley (Hordeum vulgare). Callose deposition at the root apex was a major symptom of Al toxicity [144]. Increased synthesis of callose was always associated with increased cytosolic calcium [201].…”

Section: Al Interference With Ca Mg and Pmentioning

confidence: 99%

Aluminium toxicity in plants: a review

2001

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“…Despite a wide consensus that root-tip responses are primary, early plant responses have also frequently been observed in more developed regions or in whole roots, where the contribution of the tip is negligible (~1 % of root mass). Whole-root responses to AI have been reported in which an effect was documented within the first few hours: on the uptake of Ca2+ (Clarkson and Sanderson, 1971;Lindberg, 1990;Huang et al, 1995), K + (Lindberg, 1990;Nichol et al, 1991), NO, (Durieux et al, 1993, 1995Lazof et al, 1994c), and NH, ' (Durieux et al, 1993;Nichol et al, 1993). Direct comparisons of AI-induced nutrient uptake effects among developmental regions of a root are rare.…”

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confidence: 99%

The Early Entry of Al into Cells of Intact Soybean Roots (A Comparison of Three Developmental Root Regions Using Secondary Ion Mass Spectrometry Imaging)

et al. 1996

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AI localization was compared in three developmental regions of primary root of an AI-sensitive soybean (Clycine max) genotype using secondary ion mass spectrometry. In cryosections obtained after a 4-h exposure to 38 p~ [AI3+], AI had penetrated across the root and into the stele in all three regions. Although the greatest localized AI concentration was consistently at the root periphery, the majority of the AI in each region had accumulated in cortical cells. I t was apparent that the secondary ion mass spectrometry "AI+ mass signal was spread throughout the intracellular area and was not particularly intense in the cell wall. lnclusion of some cell wall in determinations of the AI levels across the root radius necessitated that these serve as minimal estimates for intracellular AI. Total accumulation of intracellular AI for each region was 60, 73, and 210 nmol g-' fresh weight after 4 h, increasing with root development. Early metabolic responses to externa1 AI, including those that have been reported deep inside the root and in mature regions, might result directly from intracellular AI. These responses might include ion transport events at the endodermis of mature roots or events associated with lateral root emergence, as well as events within the root tip.

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The in Situ Analysis of Intracellular Aluminium in Plants

Goldsmith

Linton

1997

Progress in Botany

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The effects of short and long term aluminium treatment on potassium fluxes in roots of an aluminium sensitive cultivar of barley

Cited by 3 publications

References 10 publications

Aluminium toxicity in plants: a review

Aluminium toxicity in plants: a review

The Early Entry of Al into Cells of Intact Soybean Roots (A Comparison of Three Developmental Root Regions Using Secondary Ion Mass Spectrometry Imaging)

The in Situ Analysis of Intracellular Aluminium in Plants

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