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首页> 外文期刊>Applied Soil Ecology >Rhizobacterial community of Jatropha curcas associated with pyrene biodegradation by consortium of PAH-degrading bacteria
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Rhizobacterial community of Jatropha curcas associated with pyrene biodegradation by consortium of PAH-degrading bacteria

机译：通过PAH降解细菌的联盟与芘生物降解相关的麻疹凝乳植物

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摘要

A bacterial consortium consisting five efficient polyaromatic hydrocarbon (PAH) degraders (Pseudomonas aeruginosa PDB1, Pseudomonas fragi DBC, Klebsiella pneumoniae AWD5, Alcaligenes faecalis BDB4 and Acinetobacter sp. PDB4) was bioaugmented in pyrene contaminated soil through Jatropha curcas rhizosphere, to understand its effect on changes in bacterial community structure during the process of rhizosphere mediated biodegradation of pyrene. This consortium was highly effective in rhizosphere mediated remediation, as 97.2% of pyrene was degraded within 60 days. The better degradation of pyrene in soil was correlated with the changes in bacterial community structure in rhizosphere of J. curcas, for different trials. The Proteobacteria remained the most abundant group among different treatments, but its abundance was 30.7% higher in the rhizosphere of plants growing in pyrene contaminated soil augmented with consortium. Sphingomonas, Sphingobium, Achromobacter, Ralstonia, Pseudoxanthomonas, Devosia, Cupriavidus, and the members of Sphingomonadeceae, Rhizobiaceae, Xanthomonadeceae, were dominant within Proteobacteria, where pyrene degradation was maximum. There was strong correlation between abundances of group of bacteria which were being affected with pyrene contamination or consortium treatment, and this effect was spread over for a group of bacteria, whose abundances were interdependent. Consequently, the treatment of PAH degrading consortium restored and recruited group of bacteria, which were otherwise depleted in presence of pyrene. Therefore, the application of consortium not only facilitated the degradation of pyrene, but also resulted in modulation of the bacterial community in the process of rhizosphere mediated biodegradation of pyrene in soil.
机译：细菌联盟组成五种有效的多芳族烃（PAH）降解剂（假单胞菌Aeruginosa PDB1，Pseudomonas Fragi DBC，Klebsiella Pneumoniae AWD5，Alcaligenes Faecalis BDB4和Acinetobacter Sp。PDB4）通过麻醉树Curcas根际生成芘污染土壤，了解其对效果根际介导过程中细菌群落结构的变化芘的生物降解过程中。该联盟在根际介导的修复方面具有高效，97.2％的芘在60天内降解。土壤中芘的较好降解与J.Curcas的根际细菌群落结构的变化相关，针对不同的试验。蛋白质体仍然是不同治疗中最丰富的群体，但在芘污染的土壤中生长的植物根际，其丰度高30.7％。鞘氨醇类，鞘豆类，瘦菌杆菌，罗尔斯顿菊属，假瘤菌，Demosia，Cupriavidus和SpingoMonadeceae，Rhizobiaceae，Xanthomonadeceae的成员，在植物体外占优势，其中芘降解最大。对芘污染或联盟治疗受影响的细菌的丰度之间存在强烈的相关性，并且对一组细菌蔓延的这种效果是相互依赖的。因此，治疗PAH降解的联盟恢复和募集的细菌组，在芘存在下脱离。因此，联盟的应用不仅促进了芘的降解，而且导致在土壤中芘的根际介导的生物降解过程中的细菌群落。

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