Global Centre for Environmental Remediation, Faculty of Science, The University of Newcastle (UoN), University Drive, Callaghan, NSW 2308, Australia; Centre for Environmental Risk Assessment and Remediation (CERAR), University of South Australia, Mawson Lakes, SA 5095, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, Advanced Technology Centre, The University of Newcastle, University Drive, Callaghan, NSW 2308, Australia.
Centre for Environmental Risk Assessment and Remediation (CERAR), University of South Australia, Mawson Lakes, SA 5095, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, Advanced Technology Centre, The University of Newcastle, University Drive, Callaghan, NSW 2308, Australia.
Chemosphere. 2018 Feb;193:625-634. doi: 10.1016/j.chemosphere.2017.11.081. Epub 2017 Nov 17.
The phytoremediation potential of 14 different plant species belonging to C3 and C4 carbon fixation pathway for soils spiked with polycyclic aromatic hydrocarbons (PAHs) such as benzo[a]pyrene (B[a]P) and pyrene (PYR) was investigated. A glasshouse experiment was conducted to measure the changes in morphological, physiological, biochemical parameters and the bioaccumulation and biodegradation ability of the plants in soils spiked with 48 and 194 mg kg of B[a]P and PYR, respectively. The per cent removal efficacy of B[a]P and PYR by the tested plant species over a period of 50 days was from 6 to 26% and 14 to 40% respectively. The maximum removal of both B[a]P and PYR was observed in Sudan grass (C4), vetiver (C4), maize (C4), and sunflower (C3). In terms of accumulation in root and shoot, the concentration of PYR was higher in both C3 and C4 plant species when compared to B[a]P. Overall the results indicated that C4 plants were more efficient than their C3 counterparts in terms of morphological, physiological, biochemical and degradation ability of PAHs.
研究了 14 种不同植物物种的植物修复潜力，这些植物属于 C3 和 C4 碳固定途径，可用于修复受多环芳烃（如苯并[a]芘（B[a]P）和芘（PYR））污染的土壤。进行了一项温室实验，以测量在分别添加 48 和 194 mg kg 的 B[a]P 和 PYR 的土壤中，植物的形态、生理、生化参数变化以及生物积累和生物降解能力。在 50 天的时间内，测试的植物物种对 B[a]P 和 PYR 的去除效率分别为 6%至 26%和 14%至 40%。苏丹草（C4）、香根草（C4）、玉米（C4）和向日葵（C3）对两种物质的去除效果最大。就根和茎中的积累而言，与 B[a]P 相比，PYR 在 C3 和 C4 植物物种中的浓度更高。总体而言，结果表明，在形态、生理、生化和 PAHs 降解能力方面，C4 植物比其 C3 对应物更有效。
