Pyrene degradation in the rhizosphere of tall fescue (Festuca arundinacea) and switchgrass (Panicum virgatum L.).
Pyrene degradation in the rhizosphere of tall fescue (Festuca arundinacea) and switchgrass (Panicum virgatum L.).
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DOI：
10.1021/es030400x
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发表时间：
2003-11
影响因子：
11.4
通讯作者：
Yen-Chih Chen;M. Katherine Banks;A. Paul Schwab
中科院分区：
文献类型：
--
作者：
Yen-Chih Chen;M. Katherine Banks;A. Paul Schwab
采用生长箱研究了芘在高羊茅和柳枝稷根际的去向。在这项研究中，14 C-标记的芘，14 C活性的分布进行了评估后，植物建立。经过190天的培养，37.7%和30.4%的14 C-芘矿化的土壤种植高羊茅和柳枝稷，分别为4.3%的矿化未种植的对照观察。在两种种植处理中，只有7.6%和8.7%的芘从土壤中被回收，而31.5%的芘保留在未种植的对照中。在实验结束时，观察到显着量的14 C的所有治疗和控制在腐殖酸/富里酸部分的土壤。这项研究表明，潜在的芘矿化种植系统，虽然降解副产品的最终命运是不确定的。
A growth chamber study was conducted to investigate the fate of pyrene in the rhizosphere of tall fescue (Festuca arundinacea) and switchgrass (Panicum virgatum L.). For this study, 14C-labeled pyrene was used, and distribution of 14C activity was assessed after plant establishment. After 190 days of incubation, 37.7 and 30.4% of 14C-pyrene was mineralized in the soil planted with tall fescue and switchgrass, respectively, while 4.3% mineralization was observed for the unplanted control. Only 7.6 and 8.7% of pyrene was recovered from the soil in the two planted treatments, while 31.5% of pyrene remained in the unplanted control. Significant amounts of 14C were observed for all treatments and controls in the humic/fulvic fraction of soil at the end of the experiment. This research indicates the potential for pyrene mineralization in planted systems, although the ultimate fate of degradation byproducts is uncertain.