Enhancing Phytoremediation Potential of Pennisetum clandestinum Hochst in Cadmium-Contaminated Soil Using Smoke-Water and Smoke-Isolated Karrikinolide
Enhancing Phytoremediation Potential of Pennisetum clandestinum Hochst in Cadmium-Contaminated Soil Using Smoke-Water and Smoke-Isolated Karrikinolide
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DOI：
10.1080/15226514.2014.981245
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发表时间：
2015-01
影响因子：
3.7
通讯作者：
A. Okem;M. Kulkarni;J. van Staden
中科院分区：
文献类型：
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作者：
A. Okem;M. Kulkarni;J. van Staden
植物生长调节剂（PGR）和生物刺激剂的使用，以加强植物提取越来越受欢迎的植物修复技术。研究了烟水（SW）、烟源化合物karrikinetin（KAR 1）和其他已知植物生长调节剂（PGR）[赤霉素（GA 3）、激动素（Kin）和吲哚-3-丁酸（IBA）]对提高狼尾草（Pennisetum clandestinum）植物提取潜力的刺激作用。在蛭石中使用Hoagland的营养液培养狼尾草幼苗10周，并用镉（Cd）（2、5和10 mg L−1）和SW、KAR 1和PGR处理。与其他处理相比，KAR 1在最高Cd浓度（10 mg L−1）下对地上部和根干重（分别为140和137 mg）表现出积极的影响。与其他测试的PGR相比，本研究中使用的KAR 1和SW处理显着提高了P. clandestinum的植物提取潜力（分别为602和575 mg kg-1）。这是第一次报告使用SW和KAR 1，以提高植物修复潜力在P. clandestinum。需要进一步的研究来阐明烟雾成分参与植物提取潜力的确切机制。
The use of plant growth regulators (PGRs) and biostimulants to enhance phytoextraction is gaining popularity in phytoremediation technology. This study investigated the stimulatory effects of smoke-water (SW), a smoke-derived compound karrikinolide (KAR1) and other known plant growth regulators (PGRs) [gibberellic acid (GA3), kinetin (Kin) and indole-3-butyric acid (IBA)] to enhance the phytoextraction potential of Pennisetum clandestinum. Pennisetum clandestinum seedlings were grown for 10 weeks in vermiculite using Hoagland's nutrient solution and were treated with cadmium (Cd) (2, 5, and 10 mg L−1) and SW, KAR1 and PGRs. KAR1 exhibited positive effects on shoot and root dry weight (140 and 137 mg respectively) at the highest concentration of Cd (10 mg L−1) compared to all the other treatments. KAR1 and SW treatments used in the present study significantly improved the phytoextraction potential of P. clandestinum (602 and 575 mg kg−1 respectively) compared to the other tested PGRs. This is the first report on the use of SW and KAR1 to enhance phytoremediation potential in P. clandestinum. Further studies are needed to elucidate the exact mechanisms of smoke constituents involved in phytoextraction potential of plant species.