The emerging contaminants gallium (Ga) and indium (In) are extensively used in advanced industries and are considered as toxic to humans. Limited information is available on the dynamics of Ga and In in soil-upland crop systems. Therefore, this study aimed to investigate the effects of Ga and In on the growth and uptake of Ga and In by wheat plants grown in Ga- and In-contaminated soils. The wheat seedlings were planted in soils of different properties spiked with various Ga and In concentrations (50, 100, 200, and 400 mg kg⁻¹). The plant-available Ga, In, and Al in the soils were extracted by 0.02 M CaCl₂, and their concentrations in plant tissues of wheat seedlings and plant biomass were determined after harvesting. The results indicated that the Al toxicity of wheat seedlings increased with Ga and In concentrations in acidic soils. Indium phytotoxicity was found in both neutral and acidic soils. Plant analysis results indicated that the concentration of Ga and In in roots was approximately one order of magnitude higher than that in the shoots of wheat seedlings, and the capability for Ga translocation from roots to shoots was higher than for In. The results of this study suggest that the dynamics of Ga and In in soil-upland crop systems is strongly dependent on the soil properties, such as pH and Al availability.

新兴的污染物镓（Ga）和铟（In）在先进工业中被广泛使用，被认为对人体有毒。关于土壤和旱地作物系统中Ga和In动力学的信息有限。因此，本研究旨在调查Ga和In对生长在Ga和In污染土壤中的小麦植物生长和吸收Ga和In的影响。将小麦幼苗种植在掺有各种Ga和In浓度（50、100、200和400 mg kg ^-1）的不同特性的土壤中。用0.02 M CaCl ₂提取土壤中植物可用的Ga，In和Al收获后测定其在小麦幼苗植物组织中的浓度和植物生物量。结果表明，酸性土壤中小麦幼苗的铝毒害随着砷和砷的浓度增加而增加。在中性和酸性土壤中均发现了铟的植物毒性。植物分析结果表明，根中Ga和In的含量比小麦幼苗的嫩芽高约一个数量级，而Ga从根到芽的转运能力比In高。这项研究的结果表明，土壤-旱地作物系统中Ga和In的动力学强烈依赖于土壤特性，例如pH和Al的有效性。