Drastic changes in the water regime of trace elements (TEs) contaminated soils under semiarid conditions, from completely dry to flooding situations, may alter the solubility of the contaminants and, therefore, their potential mobility and availability to plants. Certain macrophyte species have shown a promising suitability for their use in the phytoremediation of TEs contaminated soils under fluctuating flooded–unflooded conditions, as a consequence of their high resistance and tolerance to contamination. Similarly, different water conditions occur during rice (Oryza sativa) cultivation, a species often used as a model plant for TEs toxicity studies. The aim of this work was to study the tolerance and oxidative response to TEs of common reed (Phragmites australis) and rice grown in contaminated mining soils, when exposed to different water saturation conditions. Both species (common reed and rice) were cultivated in three different contaminated soils from the Sierra Minera of La Unión-Cartagena (SE-Spain) under contrasting water saturation conditions (flooded and unflooded) in a pot experiment. Soil EC and elevated metal (mainly Cd and Zn) soluble concentrations conditioned the survival of the plants. Whereas, As accumulation in the aerial part of both species influenced the most oxidative stress homeostasis. Common reed showed to be a good candidate for its use in the phytostabilization of TEs contaminated soils under both flooded and unflooded conditions.

在半干旱条件下，微量元素 (TEs) 污染土壤的水分状况发生剧烈变化，从完全干燥到洪水情况，可能会改变污染物的溶解度，从而改变它们对植物的潜在流动性和可用性。某些大型植物物种由于其高抗性和对污染的耐受性，在波动的淹水-非淹水条件下已显示出它们在植物修复 TEs 污染土壤中的应用前景。同样，水稻（ Oryza sativa ）种植过程中也会出现不同的水分条件，水稻通常用作 TEs 毒性研究的模型植物。这项工作的目的是研究普通芦苇 ( Phragmites australis)对 TEs 的耐受性和氧化反应以及在受污染的采矿土壤中种植的水稻，当暴露于不同的水饱和条件时。在盆栽实验中，两种物种（普通芦苇和水稻）均在来自 La Unión-Cartagena（SE-西班牙）的 Sierra Minera 的三种不同污染土壤中种植，在对比的水饱和条件（淹水和未淹水）下进行。土壤 EC 和升高的金属（主要是 Cd 和 Zn）可溶性浓度决定了植物的生存。然而，两种物种地上部分的 As 积累影响了最大的氧化应激稳态。芦苇被证明是一种很好的候选物，可用于在淹水和非淹水条件下对 TEs 污染的土壤进行植物稳定。