A survey of intact low-density polyethylene film biodegradation by terrestrial Actinobacterial species

Soleimani, Zahra; Gharavi, Sara; Soudi, Mohammad Reza; Moosavi-Nejad, Zahra

doi:10.1007/s10123-020-00142-0

Cited by 37 publications

(24 citation statements)

References 36 publications

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Section: Resultsmentioning

confidence: 99%

“…These results were comparable to those of previous studies, wherein Ren et al (2020) and Zhang et al (2019) reported that MPs could increase the abundance of Actinobacteria. A plausible reason for these findings was that some Actinobacteria species could degrade PE, including LDPE, through the action of enzymes such as alkane hydroxylase, manganese peroxidase and laccase (Soleimani et al, 2021;Zhang et al, 2019). Furthermore, phylum-level analysis demonstrated that compared with the control treatment (0% MP at day 0), the relative abundances of Nitrospirae, Microgenomates, Planctomycetes, Chlamydiae, Parcubacteria, Acidobacteria, Gemmatimonadetes, Armatimonadetes and Candidatus Sacchar in the original soil increased after 100 days (Figure 4).…”

Section: Effects Of Mps On Soil Microbial Propertiesmentioning

confidence: 99%

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Effect of LDPE microplastics on chemical properties and microbial communities in soil

Palansooriya

Shi

Sarkar

et al. 2022

Soil Use and Management

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The accumulation of plastics in the soil ecosystem poses an increasing environmental concern worldwide. However, little is known about the effect of plastic concentrations on soil properties and soil biota. In this study, we investigated the effect of low‐density polyethylene (LDPE) microplastics (MPs) on the chemical and microbial properties of agricultural soil using a set of microcosm experiments. The soil was incubated for 100 days with LDPE at concentrations of 0%, 0.1%, 1%, 3%, 5%, and 7% at 25°C with 70% water‐holding capacity. Along with soil chemical analysis, we conducted an analysis of soil microbial properties on the first day and again after 100 days of incubation. LDPE concentrations of ≥1% significantly (p < .05) decreased the pH but increased the electrical conductivity of the soil in comparison with the control (0% LDPE at 100 days). Increasing the LDPE concentration did not affect the soil exchangeable cation content or the available Pb concentration. Firmicutes were the most abundant phyla in the soil on the first day, whereas Proteobacteria, Firmicutes and Actinobacteria became dominant in all treatments after 100 days. An increasing LDPE concentration increased the abundance of Actinobacteria and decreased Proteobacteria. Principal component analysis demonstrated that only 7% LDPE was positively correlated with Actinobacteria, indicating that higher concentrations of LDPE contributed to the growth of this phylum. The findings of this study imply that MP contamination could affect soil chemical properties and microbial activity and that these effects primarily depend on MP concentrations in soil.

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Section: Resultsmentioning

confidence: 99%

Section: Effects Of Mps On Soil Microbial Propertiesmentioning

confidence: 99%

Effect of LDPE microplastics on chemical properties and microbial communities in soil

Palansooriya

Shi

Sarkar

et al. 2022

Soil Use and Management

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show abstract

“…Compared with the expensive cost of physical and chemical degradation, biodegradation has more obvious time and price advantages. Soleimani isolate and identify 17 actinomycetes belonging to three genera that can efficiently biodegrade polyethylene-based plastics [68] . Mealworms, the greater wax moth, can degrade plastic polymers by using plastic as a carbon source [69] .…”

Section: Resultsmentioning

confidence: 99%

Impact of the COVID-19 pandemic on research on marine plastic pollution – A bibliometric-based assessment

Wang

Huang

2022

Marine Policy

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“…E. ludwigii has been recently identified in a case of catheter-associated bloodstream infection with massive aggregation of the bacterium outside the central venous catheter ( Wagner et al, 2020 ). Other pathogens have also been reported as colonizers of PE and PP ( A. hydrophila : Thomas et al, 2020 ), as possible degraders of LDPE and as microplastic surface colonizers ( N. farcinica : Soleimani et al, 2021 ; Yi et al, 2021 ), or were identified as so-called ultramicrocells from drinking water systems made of PVC pipes ( Afipia sp. : Silbaq, 2009 ).…”

Section: Discussionmentioning

confidence: 99%

In situ Prokaryotic and Eukaryotic Communities on Microplastic Particles in a Small Headwater Stream in Germany

et al. 2021

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The ubiquitous use of plastic products in our daily life is often accompanied by improper disposal. The first interactions of plastics with organisms in the environment occur by overgrowth or biofilm formation on the particle surface, which can facilitate the ingestion by animals. In order to elucidate the colonization of plastic particles by prokaryotic and eukaryotic microorganisms in situ, we investigated microbial communities in biofilms on four different polymer types and on mineral particles in a small headwater stream 500 m downstream of a wastewater treatment plant in Germany. Microplastic and mineral particles were exposed to the free-flowing water for 4 weeks in spring and in summer. The microbial composition of the developing biofilm was analyzed by 16S and 18S amplicon sequencing. Despite the expected seasonal differences in the microbial composition of pro- and eukaryotic communities, we repeatedly observed polymer type-specific differentiation in both seasons. The order of polymer type-specific prokaryotic and eukaryotic community distances calculated by Robust Aitchison principal component analysis (PCA) was the same in spring and summer samples. However, the magnitude of the distance differed considerably between polymer types. Prokaryotic communities on polyethylene particles exhibited the most considerable difference to other particles in summer, while eukaryotic communities on polypropylene particles showed the most considerable difference to other spring samples. The most contributing bacterial taxa to the polyethylene-specific differentiation belong to the Planctomycetales, Saccharimonadales, Bryobacterales, uncultured Acidiomicrobia, and Gemmatimonadales. The most remarkable differences in eukaryotic microorganism abundances could be observed in several distinct groups of Ciliophora (ciliates) and Chlorophytes (green algae). Prediction of community functions from taxonomic abundances revealed differences between spring and summer, and – to a lesser extent – also between polymer types and mineral surfaces. Our results show that different microplastic particles were colonized by different biofilm communities. These findings may be used for advanced experimental designs to investigate the role of microorganisms on the fate of microplastic particles in freshwater ecosystems.

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A survey of intact low-density polyethylene film biodegradation by terrestrial Actinobacterial species

Cited by 37 publications

References 36 publications

Effect of LDPE microplastics on chemical properties and microbial communities in soil

Effect of LDPE microplastics on chemical properties and microbial communities in soil

Impact of the COVID-19 pandemic on research on marine plastic pollution – A bibliometric-based assessment

In situ Prokaryotic and Eukaryotic Communities on Microplastic Particles in a Small Headwater Stream in Germany

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