Colegio de Postgraduados, Programa de Edafología, Carr México-Texcoco, km 36.5, Montecillo, Texcoco estado de México 56230, México.
J Environ Sci (China). 2013 Feb 1;25(2):367-75. doi: 10.1016/s1001-0742(12)60060-6.
To find if ornamental plants are applicable to the remediation of metal-polluted areas, the tolerance of chrysanthemum plants (Chysanthemum maximum) var. Shasta to different metals under hydroponic conditions was studied. Their responses as influenced by the mycorrhizal fungus Glomus mosseae (Nicol. & Gerd.) Gerdemann & Trappe BEG25 on substrates containing mine residues were also investigated. Our results showed that chrysanthemum is a metal-tolerant plant under hydroponic conditions, plants behaving as Pb-excluders, whereas Cd, Cu and Ni were accumulated in roots. Low accumulation in flowers was observed for Cd and Cu but it was concentration-dependent. Ni and Pb were not translocated to flowers. Shoot biomass was not significantly affected by the different rates of mine residue addition for both mycorrhizal and non-mycorrhizal plants. Mycorrhizal plants accumulated less Pb and Cu in both shoots and roots than non-mycorrhizal plants. Chysanthemum could be a prospective plant for revegetation of tailings and the use of inoculation may decrease plant metal accumulation in polluted soils.
为了探究观赏植物是否适用于修复金属污染区，本研究采用水培法，研究了夏菊（Chysanthemum maximum）品种对不同金属的耐受性，以及菌根真菌摩西球囊霉（Glomus mosseae）（Nicol. & Gerd.）Gerdemann & Trappe BEG25 对含有矿山尾矿基质中金属的响应。结果表明，夏菊是一种水培条件下的耐金属植物，表现为 Pb 排斥，而 Cd、Cu 和 Ni 则积累在根部。Cd 和 Cu 在花朵中的积累较低，但呈浓度依赖性。Ni 和 Pb 未向花朵转移。对于根和茎，添加不同量的矿山尾矿对根和茎生物量的影响均不显著。与非菌根植物相比，菌根植物在根和茎中积累的 Pb 和 Cu 较少。夏菊可能是尾矿复垦的一种有前景的植物，接种可能会减少污染土壤中植物对金属的积累。
