Microelement Absorption and Metals Accumulation in Barley Seedlings under the Combined Toxicity of Cadmium and Aluminum

Tian Rong Guo

doi:10.4028/www.scientific.net/AMR.573-574.1064

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 573-574Microelement Absorption and Metals Accumulation in...

Microelement Absorption and Metals Accumulation in Barley Seedlings under the Combined Toxicity of Cadmium and Aluminum

Abstract:

Hydroponic system was used to investigate the interaction between different levels of Cd and Al in barley seedlings. The results showed that stress exposure promoted Al or Cd accumulation in plants, leading to strongly inhibited growth. Concentration- and tissue-dependent responses to Al or Cd stress in barley leaves, stems, and roots were found in four nutrient concentrations. Thus, stress generally inhibited Mg, Zn, and Ca absorption, but increased Fe accumulation and Ca translocation from roots to aboveground parts. Binary metal combinations significantly increased Al levels in plant parts, and aggravated growth inhibition as well as nutrients absorption disorder caused by Al treatments, especially the combination of 90 µM Al+5 µM Cd. By contrast, combined treatments decreased Cd concentration in plants, and the combinations of 10 µM Cd+Al alleviated Cd-induced growth and metabolism anomaly.

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Periodical:

Advanced Materials Research (Volumes 573-574)

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1064-1068

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.573-574.1064

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Online since:

October 2012

Authors:

Tian Rong Guo

Keywords:

Aluminum (Al), Barley (Hordeum vulgare L.), Cadmium (Cd), Interaction, Nutrient, Plant Growth

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