Lisiak-Zielińska Marta, Borowiak Klaudia, Budka Anna, Mleczek Patrycja, Cakaj Arlinda, Kanclerz Jolanta, Hanć Anetta
Department of Ecology and Environmental Protection, Faculty of Environmental and Mechanical Engineering, Poznań University of Life Sciences, Wojska Polskiego 28, 60-637, Poznań, Poland.
Department of Construction and Geoengineering, Faculty of Environmental and Mechanical Engineering, Poznań University of Life Sciences, Wojska Polskiego 28, 60-637, Poznań, Poland.
Sci Rep. 2025 Aug 12;15(1):29496. doi: 10.1038/s41598-025-15371-4.
Taraxacum officinale has been identified as a potential rare earth elements (REEs) accumulator, making it a promising bioindicator for urban environment. However, the influence of seasonal variation on the bioavailability, transport, and accumulation of REEs in plant tissues remains poorly understood. This knowledge gap is crucial, especially in the context of development of reliable bioindicators for urban pollution and managing urban ecosystems sustainably. The aim of this study was to evaluate seasonal changes in the content and distribution of Sc, Y and 14REEs in soils and dandelion roots and leaves from urban areas. Ten research sites typical for urbanised areas were designated and samples of soils and plants were collected in the spring and autumn season. The assessment of the level of studied elements combined with statistical analysis was performed. Variation in REEs accumulation in soil was found. Due to the lack of heavy industry in the city, the major source of REEs contamination in soils might be related to transportation and local agrotechnical and nutrition treatments. Our research on dandelion showed a decrease in REEs content in roots and leaves during autumn compared to spring. Slightly higher translocation efficiency was observed in autumn, possibly due to the plant's age and tolerance mechanism.
药用蒲公英已被确定为一种潜在的稀土元素蓄积植物，使其成为城市环境中一种很有前景的生物指示物。然而，季节变化对植物组织中稀土元素的生物有效性、迁移和积累的影响仍知之甚少。这一知识空白至关重要，尤其是在开发用于城市污染的可靠生物指示物以及可持续管理城市生态系统的背景下。本研究的目的是评估城市地区土壤以及蒲公英根和叶中钪、钇和14种稀土元素的含量和分布的季节性变化。选定了十个城市化地区典型的研究地点，并在春季和秋季采集了土壤和植物样本。对所研究元素的含量水平进行了评估并结合统计分析。发现土壤中稀土元素积累存在差异。由于该市缺乏重工业，土壤中稀土元素污染的主要来源可能与交通以及当地农业技术和营养处理有关。我们对蒲公英的研究表明，与春季相比，秋季根和叶中的稀土元素含量有所下降。秋季观察到的转运效率略高，这可能是由于植物的年龄和耐受机制。
