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首页> 外文期刊>Environmental Science & Technology >Total Phosphate Influences the Rate of Hydrocarbon Degradation but Phosphate Mineralogy Shapes Microbial Community Composition in Cold-Region Calcareous Soils
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Total Phosphate Influences the Rate of Hydrocarbon Degradation but Phosphate Mineralogy Shapes Microbial Community Composition in Cold-Region Calcareous Soils

机译：总磷酸盐影响碳氢化合物的降解速率，但磷酸盐矿物学影响着冷区钙质土壤中的微生物群落组成。

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摘要

Managing phosphorus bioaccessibility is critical for the bioremediation of hydrocarbons in calcareous soils. This paper explores how soil mineralogy interacts with a novel biostimulatory solution to both control phosphorus bioavailability and influence bioremediation. Two large bore infiltrators (1 m diameter) were installed at a PHC contaminated site and continuously supplied with a solution containing nutrients and an electron acceptor. Soils from eight contaminated sites were prepared and pretreated, analyzed pretrial, spiked with diesel, placed into nylon bags into the infiltrators, and removed after 3 months. From XAS, we learned that three principal phosphate phases had formed: adsorbed phosphate, brushite, and newberyite. All measures of biodegradation in the samples (in situ degradation estimates, mineralization assays, cultivable bacteria, catabolic genes) varied depending upon the soil's phosphate speciation. Notably, adsorbed phosphate increased anaerobic phenanthrene degradation and bzdN catabolic gene prevalence. The dominant mineralogical constraints on community composition were the relative amounts of adsorbed phosphate, brushite, and newberyite. Overall, this study finds that total phosphate influences microbial community phenotypes whereas relative percentages of phosphate minerals influences microbial community genotype composition.
机译：管理磷的生物可及性对于钙质土壤中碳氢化合物的生物修复至关重要。本文探讨了土壤矿物学如何与新型生物刺激溶液相互作用，以控制磷的生物利用度并影响生物修复。在PHC污染的地点安装了两个大口径渗透器（直径1 m），并连续向其供应含有营养物和电子受体的溶液。准备并处理了来自八个污染地点的土壤，进行了分析，进行了审前处理，用柴油加标，放入浸渗器中的尼龙袋中，并在3个月后清除。从XAS，我们了解到已经形成了三个主要的磷酸盐相：吸附的磷酸盐，透钙磷石和新辉石。样品中所有生物降解的措施（原位降解估计，矿化测定，可培养细菌，分解代谢基因）根据土壤的磷酸盐形态而变化。值得注意的是，吸附的磷酸盐增加了厌氧菲的降解和bzdN分解代谢基因的流行。群落组成的主要矿物学约束是吸附的磷酸盐，透钙磷石和新水红石的相对含量。总体而言，这项研究发现总磷酸盐会影响微生物群落表型，而磷酸盐矿物质的相对百分比会影响微生物群落基因型组成。

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  • 来源
    《Environmental Science & Technology》 |2016年第10期|5197-5206|共10页
  • 作者

    Steven D. Siciliano; Tingting Chen; Courtney Phillips; Jordan Hamilton; David Hilger; Blaine Chartrand; Jay Grosskleg; Kris Bradshaw; Trevor Carlson; Derek Peak;

  • 作者单位

    Department of Soil Science, University of Saskatchewan, Saskatoon S7N 5A8, Canada;

    Department of Soil Science, University of Saskatchewan, Saskatoon S7N 5A8, Canada;

    Department of Soil Science, University of Saskatchewan, Saskatoon S7N 5A8, Canada;

    Department of Soil Science, University of Saskatchewan, Saskatoon S7N 5A8, Canada;

    Department of Soil Science, University of Saskatchewan, Saskatoon S7N 5A8, Canada;

    Saskatchewan Polytechnique, Saskatoon S7N 5A8, Canada;

    Federated Cooperatives Limited, Saskatoon S7N 5A8, Canada;

    Federated Cooperatives Limited, Saskatoon S7N 5A8, Canada;

    Federated Cooperatives Limited, Saskatoon S7N 5A8, Canada;

    Department of Soil Science, University of Saskatchewan, Saskatoon S7N 5A8, Canada;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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