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Bladzijde 1 van 48 resultaten
Entry and distribution of aluminum in Zea mays : The mode of entry and distribution of aluminum in Zea mays: Electron microprobe X-ray analysis.
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The electron microprobe X-ray analyzer (microprobe) has been used to determine the mode of entry of aluminum (Al) and its distribution and localization in the corn plant. Microprobe analysis is a non-destructive method allowing for multiple element analysis in the same tissues, cells or cell
Determination of stress responses induced by aluminum in maize (Zea mays).
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To assess the alternative responses to aluminum toxicity, maize (Zea mays L. cv Karadeniz yıldızı) roots were exposed to different concentrations of AlCl3 (150, 300 and 450 μM). Aluminum reduced the root elongation by 39.6% in 150 μM, 44.1% in 300 μM, 50.1% in 450 μM AlCl3 after 96 h period. To
Bacterial and fungal communities in bulk soil and rhizospheres of aluminum-tolerant and aluminum-sensitive maize (Zea mays L.) lines cultivated in unlimed and limed Cerrado soil.
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Liming of acidic soils can prevent aluminum toxicity and improve crop production. Some maize lines show aluminum (Al) tolerance, and exudation of organic acids by roots has been considered to represent an important mechanism involved in the tolerance. However, there is no information about the
Apoplastic binding of aluminum is involved in silicon-induced amelioration of aluminum toxicity in maize.
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The alleviating effect of silicon (Si) supply on aluminum (Al) toxicity was suggested to be based on ex or in planta mechanisms. In our experiments with the Al-sensitive maize (Zea mays) cultivar Lixis, Si treatment but not Si pretreatment ameliorated Al-induced root injury as revealed by less
Effects of aluminum on the release and-or immobilization of soluble phosphate in corn root tissue : A (31)P-nuclear magnetic resonance study.
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The effects of aluminum ions on the generation of mobile inorganic phosphate (Pi) within the cells of excised maize (Zea mays L.) root tips were examined using (31)P-nuclear magnetic resonance ((31)P-NMR) spectroscopy. When perfused with a solution containing 50 mM glucose and 0.1-5.0 mM Ca(2+) at
Phosphine intoxication following oral exposure of horses to aluminum phosphide-treated feed.
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METHODS
66 horses were potentially exposed to phosphine (a gas) 14 hours after being fed a pelleted ration treated with aluminum phosphide.
RESULTS
28 horses had clinical signs of profuse sweating, tachycardia, tachypnea, pyrexia, ataxia, seizures, and widespread muscle tremors. Clinically relevant
Characterization of root mucilage from Melastoma malabathricum, with emphasis on its roles in aluminum accumulation.
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Plant roots exude viscous polysaccharides, called mucilage. One of the suggested roles of mucilage is immobilization of toxic metal cations, including aluminum (Al), in the rhizosphere. Mucilage exuded from roots of Melastoma malabathricum (Al accumulator) was characterized in comparison with that
Association and linkage analysis of aluminum tolerance genes in maize.
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BACKGROUND
Aluminum (Al) toxicity is a major worldwide constraint to crop productivity on acidic soils. Al becomes soluble at low pH, inhibiting root growth and severely reducing yields. Maize is an important staple food and commodity crop in acidic soil regions, especially in South America and
Aluminum activates a citrate-permeable anion channel in the aluminum-sensitive zone of the maize root apex. A comparison between an aluminum- sensitive and an aluminum-resistant cultivar.
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In search for the cellular and molecular basis for differences in aluminum (Al) resistance between maize (Zea mays) cultivars we applied the patch-clamp technique to protoplasts isolated from the apical root cortex of two maize cultivars differing in Al resistance. Measurements were performed on
A Maize ZmAT6 Gene Confers Aluminum Tolerance via Reactive Oxygen Species Scavenging
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Aluminum (Al) toxicity is the primary limiting factor that affects crop yields in acid soil. However, the genes that contribute to the Al tolerance process in maize are still poorly understood. Previous studies have predicted that ZmAT6 is a novel protein which could be upregulated under Al stress
Development of a novel aluminum tolerance phenotyping platform used for comparisons of cereal aluminum tolerance and investigations into rice aluminum tolerance mechanisms.
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The genetic and physiological mechanisms of aluminum (Al) tolerance have been well studied in certain cereal crops, and Al tolerance genes have been identified in sorghum (Sorghum bicolor) and wheat (Triticum aestivum). Rice (Oryza sativa) has been reported to be highly Al tolerant; however, a
Aluminum tolerance in maize is correlated with increased levels of mineral nutrients, carbohydrates and proline, and decreased levels of lipid peroxidation and Al accumulation.
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We investigated the uptake of aluminum (Al) and transport to shoots in two inbred maize lines (Zea mays L., VA-22 and A(4/67)) differing in Al tolerance. Seedlings were grown for 7 days in hydroponic culture with nutrient solution that contained 0, 240, 360, and 480microM Al at pH 4.2. After 7 days
Transcriptome analysis highlights changes in the leaves of maize plants cultivated in acidic soil containing toxic levels of Al(3+).
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Soil acidity limits crop yields worldwide and is a common result of aluminum (Al) phytotoxicity, which is known to inhibit root growth. Here, we compared the transcriptome of leaves from maize seedlings grown under control conditions (soil without free Al) and under acidic soil containing toxic
Silicon dioxide nanoparticles ameliorate the phytotoxic hazards of aluminum in maize grown on acidic soil.
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Aluminum (Al) toxicity is a major constraint for crop production in acid soils. Therefore, looking for sustainable solutions to increase plant tolerance to Al toxicity is needed. Although several studies addressed the potential utilization of silica or silicon dioxide nanoparticles (SNPs) to
Root mucilage enhances aluminum accumulation in Melastoma malabathricum, an aluminum accumulator.
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Root mucilage is gelatinous polysaccharide-containing material exuded from the outer layers of the root cap. Although mucilage has been suggested to play several roles in plant growth, its role in mineral uptake has not been well understood. Melastoma malabathricum L. is an aluminum (Al) accumulator
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