Division of Genetics and Environmental Biotechnologies, Department of Environmental Sciences, University of Parma, Viale G.P. Usberti 11/A, 43124 Parma, Italy.
Environ Sci Technol. 2011 May 15;45(10):4497-505. doi: 10.1021/es103708k. Epub 2011 Apr 14.
Species within the genus Populus include potential phytoextractors of heavy metal ions from contaminated soils, and genetic markers predictive of performance would be a useful tool for selection and breeding. Here, we have identified sequence variation within seven target and three nontarget genes among a set of 11 Populus spp. clones. Sequence variants were present in both the coding and noncoding regions; the former can potentially affect the functionality of the target genes. At the same time, the effect of exposure of the clones to cadmium ions on the morphology and the distribution of various metal ions was investigated by scanning electron microscopy microanalysis. A positive correlation was established between genetic variation, cadmium accumulation, and its bioconcentration in the root.
杨属中的物种包括从污染土壤中提取重金属离子的潜在植物萃取剂，而预测性能的遗传标记将是选择和培育的有用工具。在这里，我们在一组 11 个杨属克隆体中鉴定了七个靶标和三个非靶标基因内的序列变异。序列变异存在于编码区和非编码区；前者可能会影响靶基因的功能。同时，通过扫描电子显微镜微分析研究了克隆体暴露于镉离子对形态和各种金属离子分布的影响。遗传变异、镉积累及其在根部的生物浓缩与正相关。
