Bioremediation of polyaromatic hydrocarbons (PAHs) using rhizosphere technology.
Bioremediation of polyaromatic hydrocarbons (PAHs) using rhizosphere technology.
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DOI：
10.1590/s1517-838246120131354
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发表时间：
2015-03
期刊：
影响因子：
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通讯作者：
Sharma KD
中科院分区：
文献类型：
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作者：
Bisht S;Pandey P;Bhargava B;Sharma S;Kumar V;Sharma KD
由于生活质量标准的提高和对环境问题的认识，污染场地的修复已成为社会的优先事项。在过去的几十年里，人们对开发原位修复环境污染物的策略产生了浓厚的兴趣，因为物理化学策略的高经济成本，生物工具修复这些持久性污染物是更好的选择。持久性有机化学品，即多环芳烃，由于其普遍存在、易降解、生物累积潜力和致癌活性，已成为主要关注焦点。植物根际修复是一种特殊类型的植物修复，涉及植物及其相关的根际微生物是创造性的生物技术方法，在这方面进行了探讨。此外，本文还从多环芳烃的自然衰减、生物强化和植物修复等方面阐述了多环芳烃的根际修复的意义，并对影响根际修复技术的环境因素进行了分析。目前已报道的降解多环芳烃的细菌种类很多，其中大部分是从污染土壤中分离得到的，而在非污染土壤中的研究报道很少。铜绿假单胞菌，荧光假单胞菌，分枝杆菌属，嗜血杆菌属，红球菌属，类芽孢杆菌属是一些常被研究的多环芳烃降解细菌。最后，探索植物和微生物之间的分子通信，并利用这种通信来实现更好的污染物消除效果，是未来前景的一个迷人的研究领域。
The remediation of polluted sites has become a priority for society because of increase in quality of life standards and the awareness of environmental issues. Over the past few decades there has been avid interest in developing in situ strategies for remediation of environmental contaminants, because of the high economic cost of physicochemical strategies, the biological tools for remediation of these persistent pollutants is the better option. Major foci have been considered on persistent organic chemicals i.e. polyaromatic hydrocarbons (PAHs) due to their ubiquitous occurrence, recalcitrance, bioaccumulation potential and carcinogenic activity. Rhizoremediation, a specific type of phytoremediation that involves both plants and their associated rhizospheric microbes is the creative biotechnological approach that has been explored in this review. Moreover, in this review we showed the significance of rhizoremediation of PAHs from other bioremediation strategies i.e. natural attenuation, bioaugmentation and phytoremediation and also analyze certain environmental factor that may influence the rhizoremediation technique. Numerous bacterial species were reported to degrade variety of PAHs and most of them are isolated from contaminated soil, however few reports are available from non contaminated soil. Pseudomonas aeruginosa , Pseudomons fluoresens , Mycobacterium spp., Haemophilus spp., Rhodococcus spp., Paenibacillus spp. are some of the commonly studied PAH-degrading bacteria. Finally, exploring the molecular communication between plants and microbes, and exploiting this communication to achieve better results in the elimination of contaminants, is a fascinating area of research for future perspective.