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| Metabolism of anthracene in ryegrass (Lolium multiflorum Lam.) |
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Abstract Metabolism of anthracene by ryegrass (Lolium multiflorum Lam.) was studied using a greenhouse experiment. Anthraqinone and anthrone as the first-grade metabolic products of anthracene was analysed. Concentrations of anthracene in ryegrass decreased from 0.760mg/kg to 0.147mg/kg, and 80.6% of anthracene was degrdaded in 0~16d. Anthracene was proven to be metabolized by ryegrass, and root was the main position where the metabolism performed. And anthrone was found to accumulate in the plant, while anthraqinone was further metabolized in plant bodies. The release of anthraqinone and anthrone from plant root to cultivation solution was detected. Translocation of anthraqinone and anthrone from plant root to shoot was observed, and translocation factor (TF) values of anthrone and anthraqinone were 0.796~1.285 and 0.239~0.653, indicating the more easier translocation of anthrone than anthraqinone in ryegrass.
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Received: 31 August 2009
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