Institute of Agroecology and Plant Production, Wrocław University of Environmental and Life Sciences, Wrocław, Poland.
Department of Genetics, Plant Breeding and Seed Production, Wrocław University of Environmental and Life Sciences, Wrocław, Poland.
Sci Rep. 2024 Jun 12;14(1):13488. doi: 10.1038/s41598-024-63830-1.
Common bentgrass Agrostis capillaris L. is known as tolerant to toxic elements. A hypothesis was examined that its ecotypes growing in historically polluted sites show a limited arsenic uptake and have genetic features that distinguish them from commercially available cultivars. The study was conducted in Złoty Stok, a historical area of arsenic mining. Additionally, two commercial cultivars were grown in pots with arsenic-rich soils. Based on arsenic concentrations in plant roots and shoots, bioconcentration and translocation factors BCF and TF were calculated. Commercial cultivars indicated many times higher BCF shoots and TF values compared to field plants. DNA analysis of leaf blades showed a clear distinction between the plants growing in some sites and patches in the field, and also a gene overlap between the plants in the field and commercial forms. The research did not allow for identification of ecotypes with exceptionally limited arsenic uptake. Moreover, there were no significant differences between the genotypic characteristics of plants growing in polluted sites and those poorly tolerant grown from commercially available seeds. Apparently, other factors, and not genetically determined features, are responsible for A. capillaris tolerance to arsenic in Złoty Stok.
普通早熟禾（Agrostis capillaris L.）被认为具有耐受有毒元素的能力。本研究假设其在历史污染地区生长的生态型具有有限的砷吸收能力，并具有与商业上可用的品种区分开来的遗传特征。该研究在 Złoty Stok 进行，该地区是砷矿开采的历史区域。此外，还在富砷土壤的盆中种植了两个商业品种。根据植物根和茎中的砷浓度，计算了生物浓缩和转运因子 BCF 和 TF。与田间植物相比，商业品种的茎 BCF 和 TF 值高出许多倍。叶片的 DNA 分析表明，在一些地点和田间斑块生长的植物之间存在明显的区别，而且田间植物和商业形式之间也存在基因重叠。研究没有确定具有异常有限砷吸收能力的生态型。此外，在污染地区生长的植物和从商业上可用的种子中生长的耐受性较差的植物的基因型特征之间没有显著差异。显然，在 Złoty Stok，导致早熟禾耐受砷的因素不是遗传决定的特征，而是其他因素。
