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<p>This study was established on plants growing in soils artificially contaminatedwith aluminium (Al) and was used to determine its phytoremediation capabilities. The effects of different Al concentrations (200,&#xa0;500,&#xa0;800) µM alone or combined with salt (200 mM) on photosynthetic performance were monitored, the uptake of Al, the putative effects on macronutrient levels and antioxidants response were also determined. The root system was the main accumulating organ. The metal concentrations in the shoots and the roots were raised with increasing concentrations in the culture medium. At the end of the experiment, the plant exhibited a decline in growth, and promotion in major macronutrient content but no changes in the malondialdehyde (MDA) levels were observed, followed by small enzyme activities like unchanged guaiacol peroxidase (GPOX) activities among treatment while ascorbate peroxidase (APX) and superoxide dismutase (SOD) increase was only noted at 800 µM. Similarly, there was an augmentation in glycine betaine (GB) amount at 800 µM Al. In general, the tested concentrations did not influence negatively the plant metabolism and the photosynthesis processes while the combined effect led to a promotion in growth and an increase in GPOX, GB and proline content. These observations indicated that this species was suitable for phytoremediation in salt-polluted areas.</p>

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Aluminium toxicity and phytoremediation potential of Arthrocnemum indicum: can salt help?

  • 期刊论文

  • 发表日期：

    2026年2月9日

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  • Dhouha Belhadj Sghaier

摘要

This study was established on plants growing in soils artificially contaminatedwith aluminium (Al) and was used to determine its phytoremediation capabilities. The effects of different Al concentrations (200, 500, 800) µM alone or combined with salt (200 mM) on photosynthetic performance were monitored, the uptake of Al, the putative effects on macronutrient levels and antioxidants response were also determined. The root system was the main accumulating organ. The metal concentrations in the shoots and the roots were raised with increasing concentrations in the culture medium. At the end of the experiment, the plant exhibited a decline in growth, and promotion in major macronutrient content but no changes in the malondialdehyde (MDA) levels were observed, followed by small enzyme activities like unchanged guaiacol peroxidase (GPOX) activities among treatment while ascorbate peroxidase (APX) and superoxide dismutase (SOD) increase was only noted at 800 µM. Similarly, there was an augmentation in glycine betaine (GB) amount at 800 µM Al. In general, the tested concentrations did not influence negatively the plant metabolism and the photosynthesis processes while the combined effect led to a promotion in growth and an increase in GPOX, GB and proline content. These observations indicated that this species was suitable for phytoremediation in salt-polluted areas.