School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia.
School of Environmental and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia; Department of Aquaculture, Patuakhali Science and Technology University, Dumki, Patuakhali 8602, Bangladesh.
Mar Pollut Bull. 2021 Sep;170:112690. doi: 10.1016/j.marpolbul.2021.112690. Epub 2021 Jul 3.
An investigation was conducted over three estuaries in SE Australia with a gradient in metal(loid) contamination to assess metal(loid) (Cu, Zn, As, Se, Cd and Pb) accumulation and transport within the halophytic saltmarsh rush, Juncus kraussii. Sydney Olympic Park exhibited the most elevated metal(loid) contamination, followed by Hunter Wetlands and Lake Macquarie. J. kraussii exhibited a strong ability to restrict metal(loid) movement into the root system, with the exception of cadmium (BCFs < 1.0) and unrestricted flow from root to culm excepting Se, Cd (TFs < 1). Pb and Zn exhibited elevated translocation between roots and culms (TF 4.4 and 7.3, respectively). Despite barriers for uptake into the below-ground tissues, most metal(loid)s were accumulated to the roots with environmental dose (except for Cu and Cd) and linear relationships were present between the root and culm (for As and Se) and the sediment and culm (for As, Se, Cd, and Pb).
本研究对澳大利亚东南部的三个河口进行了调查，这些河口存在金属（loid）污染梯度，以评估盐沼盐沼芦苇（Juncus kraussii）内金属（loid）（Cu、Zn、As、Se、Cd 和 Pb）的积累和迁移。悉尼奥林匹克公园的金属（loid）污染最为严重，其次是亨特湿地和麦夸里湖。J. kraussii 表现出强烈的限制金属（loid）向根系移动的能力，除了镉（BCF < 1.0）和根到茎的不受限制的流动，除了硒、镉（TF < 1）。Pb 和 Zn 在根和茎之间表现出较高的迁移（TF 分别为 4.4 和 7.3）。尽管存在进入地下组织的吸收障碍，但大多数金属（loid）都积累在根部，具有环境剂量（除了 Cu 和 Cd），并且在根和茎（As 和 Se）以及沉积物和茎（As、Se、Cd 和 Pb）之间存在线性关系。
