Greater Biofilm Formation and Increased Biodegradation of Polyethylene Film by a Microbial Consortium of Arthrobacter sp. and Streptomyces sp
Autor: | Chao Fang, Fang Han, Yu-Jie Zhong, Min Wei, Chao-Li Guo, Zhongkui Xie, Xiao-Yan Shi, Feng-Min Li, Ya-Nan Han, Dong Wang |
---|---|
Jazyk: | angličtina |
Rok vydání: | 2020 |
Předmět: |
Microbiology (medical)
Microorganism 0211 other engineering and technologies plastic biodegradation 02 engineering and technology 010501 environmental sciences 01 natural sciences Microbiology Streptomyces Article plastic pollution microbial consortium Virology Arthrobacter Food science lcsh:QH301-705.5 0105 earth and related environmental sciences 021110 strategic defence & security studies biology Chemistry Biofilm water contact angle Biodegradation Microbial consortium biology.organism_classification FTIR spectroscopy carbonyl index lcsh:Biology (General) SEM Degradation (geology) Mulch |
Zdroj: | Microorganisms, Vol 8, Iss 1979, p 1979 (2020) Microorganisms Volume 8 Issue 12 |
ISSN: | 2076-2607 |
Popis: | The widespread use of polyethylene (PE) mulch films has led to a significant accumulation of plastic waste in agricultural soils. The biodegradation of plastic waste by microorganisms promises to provide a cost-effective and environmentally-friendly alternative for mitigating soil plastic pollution. A large number of microorganisms capable of degrading PE have been reported, but degradation may be further enhanced by the cooperative activity of multiple microbial species. Here, two novel strains of Arthrobacter sp. and Streptomyces sp. were isolated from agricultural soils and shown to grow with PE film as a sole carbon source. Arthrobacter sp. mainly grew in the suspension phase of the culture, and Streptomyces sp. formed substantial biofilms on the surface of the PE film, indicating that these strains were of different metabolic types and occupied different microenvironments with contrasting nutritional access. Individual strains were able to degrade the PE film to some extent in a 90-day inoculation experiment, as indicated by decreased hydrophobicity, increased carbonyl index and CO2 evolution, and the formation of biofilms on the film surface. However, a consortium of both strains had a much greater effect on these degradation properties. Together, these results provide new insights into the mechanisms of PE biodegradation by a microbial consortium composed of different types of microbes with possible metabolic complementarities. |
Databáze: | OpenAIRE |
Externí odkaz: |