Abstract Uptake and translocation of iodine by green bean (Phaseolus vulgaris L.) and lettuce (Lactuca sativa L.) were investigated in a calcareous sandy soil-plant system. These plants were cultivated in calcareous sandy soil in presence of irrigation water with the iodine concentrations of 0.10, 0.25 and 0.50 mg/L. The growth of these plants was stimulated at the two lower iodine concentrations of 0.10 and 0.25 mg/L, but hampered at 0.50 mg/L. In lettuce the highest iodine dosage resulted in smaller leaf surface and higher number of leaves, nearly with the same biomass production. In the edible parts of green bean and lettuce plants irrigated with 0.25 mg/L iodine containing water, the iodine concentration levels amounted to 0.6 and 5.2 mg/kg dry weight (DW), respectively. In lettuce, the uptake and translocation of selected essential elements (P, Mg, Mn, Fe, Cu, Zn, B) were also stimulated (20-260%) by iodine treatment; however, in fresh bean pods this phenomenon was negligible. Considering the iodine level and moisture content of the fresh lettuce leaves and fresh bean pods, the consumption of 100 g fresh vegetable covers about 66%, 3% of the recommended dietary allowance (150 μg).

中文翻译：

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绿豆（Phaseolus vulgaris L.）和生菜（Lactuca sativa）在含碘的植物钙质沙质土壤系统中用碘进行生物强化

摘要 研究了绿豆（Phaseolus vulgaris L.）和莴苣（Lactuca sativa L.）在钙质砂质土壤-植物系统中对碘的吸收和转运。这些植物在含碘浓度为 0.10、0.25 和 0.50 mg/L 的灌溉水的钙质沙质土壤中栽培。这些植物的生长在 0.10 和 0.25 毫克/升这两个较低的碘浓度下受到刺激，但在 0.50 毫克/升时受到阻碍。在生菜中，最高的碘剂量导致更小的叶表面和更多的叶子，几乎具有相同的生物量产量。在用 0.25 毫克/升含碘水灌溉的绿豆和生菜植物的可食用部分中，碘浓度水平分别为 0.6 和 5.2 毫克/千克干重 (DW)。在生菜中，碘处理还刺激了选定必需元素（P、Mg、Mn、Fe、Cu、Zn、B）的吸收和易位（20-260%）；然而，在新鲜豆荚中，这种现象可以忽略不计。考虑到新鲜生菜叶和新鲜豆荚的碘含量和水分含量，100 克新鲜蔬菜的摄入量约占推荐膳食摄入量（150 微克）的 66%，即 3%。