Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia.
Int J Phytoremediation. 2013;15(10):979-90. doi: 10.1080/15226514.2012.751353.
The results of investigation of the process of cadmium accumulation by floating plants of Eichhornia crassipes and Pistia stratiotes are discussed. The main specialty of this study is that it puts more emphasis on the mechanism of penetration of pollutant within the plant and its fate during accumulation act. As a result it was shown that at the first stage of cadmium uptake the sorption of the metal on the surface of the roots due to the presence of carboxylic groups takes place. At the root of the plant cadmium mainly localized in the cortex and rhizodermis, then the pollutant penetrates into the tissues of the stem according to its translocation factor. It has been also assumed that flavonoids perform an intermediate role in the accumulation of cadmium by the plant, taking part in the transport and combat an oxidative stress.
讨论了浮萍和水蕹菜吸收镉的过程的调查结果。本研究的主要特点是更侧重于污染物在植物体内穿透的机制及其在积累过程中的归宿。结果表明，在镉吸收的第一阶段，由于存在羧酸基团，金属被吸附在根的表面上。在植物根部，镉主要定位于皮层和根表皮，然后根据其迁移因子，污染物渗透到茎组织中。人们还假设，类黄酮在植物对镉的积累中起着中间作用，参与运输和抵御氧化应激。
