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首页> 外文期刊>Chemosphere >Endophytic Burkholderia fungorum DBT1 can improve phytoremediation efficiency of polycyclic aromatic hydrocarbons
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Endophytic Burkholderia fungorum DBT1 can improve phytoremediation efficiency of polycyclic aromatic hydrocarbons

机译：内生伯克霍尔德菌DBT1可以提高多环芳烃的植物修复效率

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摘要

Burkholderia fungorum DBT1 is a bacterial strain isolated from an oil refinery discharge and capable of transforming dibenzothiophene, phenanthrene, naphthalene, and fluorene. In order to evaluate the influence of a policyclic aromatic hydrocarbon (PAH)-transforming bacterial strain on the phytoremediation of organic contaminants, B. fungorum DBT1 was inoculated into hybrid poplar (Populus deltoides × Populus nigra). The poplar plants were grown for 18-wk with or without naphthalene, phenanthrene, fluorene and dibenzothiophene (488 mg kg~(-1) soil each) in non-sterile sand-peat substrate. Evidences were gained that B. fungorum DBT1 was present in high concentration in poplar root tissues (2.9-9.5 × 10~3 CFU g~(-1)), while the strain was not detected in stem, leaves and rhizosphere. When poplar was planted in uncontaminated substrate, the infection caused negative effects on biomass index, leaves and stem dry weight, without showing however any disease symptoms. On the other hand, plants inoculated with the strain DBT1 resulted in better tolerance against the toxic effects of PAHs, in terms of root dry weight. Although the presence of plants acted as the main effective treatment for PAH dissipation (82-87%), the inoculum with DBT1 strain lead to the highest PAH abatement (up to 99%). In the present study, an environmental isolate with proper metabolic features was demonstrated to be possibly suitable as a poplar endophyte for improving microbe-assisted phytoremediation in PAH contaminated matrices.
机译：真菌伯克霍尔德氏菌DBT1是从炼油厂排放物中分离出的细菌菌株，能够转化二苯并噻吩，菲，萘和芴。为了评估转化多环芳烃（PAH）的细菌菌株对有机污染物的植物修复的影响，将真菌双歧杆菌DBT1接种到杂种杨（Populus deltoides×Populus nigra）中。将杨树植物在未灭菌的沙豆基质中生长18周，有或没有萘，菲，芴和二苯并噻吩（每种土壤488 mg kg〜（-1））。有证据表明，在杨树根组织中（2.9-9.5×10〜3 CFU g〜（-1））高浓度存在真菌B. fungorum DBT1，而在茎，叶和根际未检出该菌株。当将杨树种植在未污染的基质中时，感染对生物量指数，叶片和茎干重造成负面影响，但未显示任何疾病症状。另一方面，接种DBT1菌株的植物在根干重方面对PAHs的毒性作用具有更好的耐受性。尽管植物的存在是PAH消散的主要有效方法（82-87％），但接种DBT1菌株的接种物可导致最高的PAH消减（高达99％）。在本研究中，具有适当代谢特征的环境分离物被证明可能适合用作杨树内生菌，以改善受PAH污染的基质的微生物辅助植物修复。

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  • 来源
    《Chemosphere》 |2013年第6期|688-694|共7页
  • 作者

    Marco Andreolli; Silvia Lampis; Marika Poli; Gabor Gullner; Borbala Biro; Giovanni Vallini;

  • 作者单位

    Department of Biotechnology, University of Verona, Strada le Grane 15, 37134 Verona, Italy;

    Department of Biotechnology, University of Verona, Strada le Grane 15, 37134 Verona, Italy;

    Department of Biotechnology, University of Verona, Strada le Grane 15, 37134 Verona, Italy;

    Plant Protection Institute and Agricultural Chemistry, Centre for Agricultural Research, Hungarian Academy of Sciences, Herman Ott6 ut 15. H-1022 Budapest, Hungary;

    Institute for Soil Sciences and Agricultural Chemistry, Centre for Agricultural Research, Hungarian Academy of Sciences, Herman Ott6 ut 15, H-1022 Budapest, Hungary;

    Department of Biotechnology, University of Verona, Strada le Grane 15, 37134 Verona, Italy;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Bacterial endophytes; Burkholderia fungorum DBT1; Hybrid poplar; Phytoremediation; Polycyclic aromatic hydrocarbons;

    机译：细菌内生菌;伯克霍尔德氏菌DBT1;杂种杨;植物修复;多环芳烃;

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