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    ARTICLE

    Silicon-mediated alleviation of Cadmium toxicity on Thujopsis dolabrata

    Huang YC1, H Chen1, WJ Zhao2, WD Li1, HY Yang1, Y Sun1, L Wang1, SH Cao1

    Phyton-International Journal of Experimental Botany, Vol.85, pp. 283-290, 2016, DOI:10.32604/phyton.2016.85.283

    Abstract We conducted pot experiments on the cypress Thujopsis dolabrata (Linn. f.) Sieb. et Zucc. in order to study the interaction of silicon (Si) and root exudates on cadmium (Cd) bioavailability in the rhizosphere,. Each variety was planted with 100 mg/kg Cd and/or 400 mg/kg Si for 210 days. The results showed that adding Si increased Cd tolerance in T. dolabrata, but that the mechanism was specifical. In T. dolabrata, Si did not prevent Cd translocation from roots to shoots, and it significantly enhanced Cd accumulation without inhibiting growth. Moreover, Si mobilized Cd from the rhizospheric soil by stimulating More >

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