文献类型：期刊文献

英文题名：Influence of an arsenate-reducing and polycyclic aromatic hydrocarbons-degrading Pseudomonas isolate on growth and arsenic accumulation in Pteris vittata L. and removal of phenanthrene

作者：Feng, Tiancai[1]; Lin, Hanping[1]; Guo, Qiaofeng[2]; Feng, Yaoyu[1]

机构：[1] State Envirnmental Protection Key Lab of Environmental Risk Assessment, Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China; [2] Yangtze River Pharmaceutical Group Shanghai Haini Pharmaceutical Co.,Ltd, 3999 Hunan Road, Shanghai 201318, China

年份：2014

卷号：94

起止页码：12

外文期刊名：International Biodeterioration and Biodegradation

收录：EI(收录号：20143800067286)

语种：英文

外文关键词：Bacteria - Biodegradation - Anthracene

摘要：Polycyclic aromatic hydrocarbons (PAHs) and arsenic often co-occur at polluted sites, but remediation strategies for this are scarce. In this study, the effect of bacterial inoculation on plant growth and arsenic uptake by Pteris vittata and phenanthrene dissipation was investigated hydroponically using an arsenate-reducing and PAH-degrading Pseudomonas isolate. In a 12-d experiment, despite reduced dry weight in some cases, the isolate generally promoted the growth of P.vittata. The aboveground and belowground biomass increased by 21.0-38.7% and 3.5-66.3%, respectively. In addition, bacterial inoculation greatly enhanced arsenic uptake by P.vittata compared to un-inoculated treatments (from 246.7-438.9 and 102.6-231.4 to 754.1-1425.7 and 121.5-351.4mgkg-1 As in aboveground and belowground biomass, respectively). Accordingly, arsenic transfer factor increased by 116-315%. The enhancement was attributed to the bacteria-mediated As(V) reduction in growth media. A dissipation of phenanthrene from growth media was observed and attributed to the degradation of the chemical by the isolate, as the contribution of P.vittata in phenanthrene removal was negligible. The present results demonstrated the versatile arsenate-reducing and PAH-degrading bacteria can effectively enhance arsenic uptake and translocation by P.vittata and remove phenanthrene. ? 2014 Elsevier Ltd.