A comparative analysis of copper accumulation in the roots of Narbon vetch (Vicia narbonensis L.) plants and cell walls isolated from them has been performed. For intact plants, the root system is identified as the main location for copper ion deposition and root cell walls are characterized by a high content of carboxyl groups of polygalacturonic acid, which explains their high capacity for binding copper ions. We conclude that copper sequestration in the root cell walls is the key defense strategy used by Narbon vetch plants in response to a Cu excess in the medium, which prevents Cu accumulation in the cytoplasm.

中文翻译：

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纳邦紫etch植物根细胞壁的理化性质在吸收铜中的作用

进行了Narbon紫etch（Vicia narbonensis L.）植物的根和从中分离出的细胞壁中铜积累的比较分析。对于完整的植物，根系被确定为铜离子沉积的主要场所，根细胞壁的特征是聚半乳糖醛酸的羧基含量高，这说明它们具有高结合铜离子的能力。我们得出的结论是，根细胞壁中的铜螯合是Narbon紫etch植物响应培养基中Cu过量而使用的关键防御策略，这可防止Cu在细胞质中积累。