Butcher James, Villette Claire, Zumsteg Julie, Maurer Loïc, Barchietto Thierry, Rigo Richard, Floch Kevin, Cseh Anita, Buchet Sergej, Stintzi Alain, Heintz Dimitri
School of Pharmaceutical Sciences, Faculty of Medicine, University of Ottawa, Ottawa, Canada.
Ottawa Institute of Systems Biology and Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Canada.
Nat Commun. 2025 Jul 1;16(1):5768. doi: 10.1038/s41467-025-60918-8.
Constructed wetlands are used to clean domestic wastewater via phytoremediation, commonly involving the use of reeds. The process results in the production of large amounts of polluted plant tissues, which are then considered unusable waste products. In this study, the reusability of reeds and nettle-polluted tissues is investigated. Fermenting contaminated plant tissues to produce liquid fertilizer is a sustainable means to remove 87-95% of persistent organic pollutants. A multiomics approach combining metabolomics and amplicon metagenomics is used to analyze the mechanisms that occur during fertilizer production from polluted plant tissues and identify the microbes that are likely key for this transformation. A consortium of bacteria and fungi with cellulolytic activity is identified. In addition, the obtained liquid fertilizer positively impacts plant growth in the presence of pathogens and therefore exhibits potential application in farming. This approach may be a simple, commercially attractive solution for the management of contaminated plant tissues originating from constructed wetlands, which are currently considered problematic, useless waste products.
人工湿地通过植物修复来净化生活污水，通常会用到芦苇。这个过程会产生大量受污染的植物组织，这些组织随后被视为无用的废品。在本研究中，对芦苇和荨麻受污染组织的可再利用性进行了调查。将受污染的植物组织发酵以生产液体肥料是一种可持续的方法，可去除87 - 95%的持久性有机污染物。采用代谢组学和扩增子宏基因组学相结合的多组学方法来分析从受污染植物组织生产肥料过程中发生的机制，并确定可能是这种转化关键的微生物。鉴定出了具有纤维素分解活性的细菌和真菌联合体。此外，所获得的液体肥料在有病原体存在的情况下对植物生长有积极影响，因此在农业中具有潜在应用价值。这种方法可能是一种简单且具有商业吸引力的解决方案，用于处理源自人工湿地的受污染植物组织，这些组织目前被认为是有问题的无用废品。
