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Biodegradation of the plastics PLA and PET in cultivated soil with the participation of microorganisms and plants
International Biodeterioration & Biodegradation ( IF 4.074 ) Pub Date : 2020-09-18 , DOI: 10.1016/j.ibiod.2020.105087
Katarzyna Janczak, Grażyna B. Dąbrowska, Aneta Raszkowska-Kaczor, Daniel Kaczor, Katarzyna Hrynkiewicz, Agnieszka Richert

The research objective of this study was to verify the effectiveness of selected rhizosphere strains in accelerating the biodegradation of plastics in cultivated soil. The study was a continuation of experiments conducted in compost soil. The experiments confirmed the ability of the two bacteria and fungi strains in biodegradation of polylactide (PLA) and polyethylene terephthalate (PET). The combination of these microorganisms with some tested plant species increased the microbial population in the soil and, at the same time, degradation of the plastic films. The presence of the microorganisms in soil together with PLA reduced the soil pH value. The significant degradation changes of polymers were observed in the presence of S. plymuthica in both compost and cultivated soil. The presence of 155 genes related to xenobiotics biodegradation and removal was demonstrated after sequencing of the genome of this bacterium. These results can be used to develop an effective method for remediating plastic wastes in soils and landfills.



中文翻译:

微生物和植物参与下耕地中塑料PLA和PET的生物降解

这项研究的研究目的是验证选择的根际菌株在促进土壤中塑料生物降解方面的有效性。该研究是在堆肥土壤中进行的实验的延续。实验证实了这两种细菌和真菌菌株在聚乳酸(PLA)和聚对苯二甲酸乙二醇酯(PET)的生物降解中的能力。这些微生物与一些经过测试的植物物种的结合增加了土壤中的微生物种群,同时也增加了塑料薄膜的降解。土壤中的微生物与PLA一起存在会降低土壤的pH值。在S. plymuthica存在下观察到聚合物的显着降解变化在堆肥和耕种土壤中均如此。在对该细菌的基因组测序之后,证实了与异种生物降解和去除相关的155个基因的存在。这些结果可用于开发补救土壤和垃圾填埋场中塑料废物的有效方法。

更新日期:2020-09-20
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