The microplastisphere: Biodegradable microplastics addition alters soil microbial community structure and function

Zhou, Jie; Gui, Heng; Banfield, Callum C.; Wen, Yuan; Zang, Huadong; Dippold, Michaela A.; Charlton, Adam; Jones, Davey L.

doi:10.1016/j.soilbio.2021.108211

Cited by 378 publications

(112 citation statements)

References 74 publications

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“…As a main decomposer for biodegradable materials (PHBV and PLA) Takahashi et al, 2011;Xu et al, 2018). Comamonadaceae has previous been observed thrives in starch-based plastic treated soil (Qi et al, 2020c) and PHBV-MPs treated soil (Zhou et al, 2021). As such, the higher relative abundance of Comamonadaceae in our Bio-MPs treatments might be attributed to the carbon substrate supplied from Bio-MPs (PLA and PBAT).…”

Section: Microbial Taxa Affected By Mps Dose and Typementioning

confidence: 60%

“…Research by Cluzard et al (2015) indicated that PE possessed antimicrobial additives and could regulate soil microbial taxa and affect soil microbial biomass. There were also studies showing that bioavailable carbon from biodegradable materials can increase microbial biomass (Zhou et al, 2021;Zumstein et al, 2018b). In the current study, soil microbial biomass was not measured, as such, the decrease of soil POXC in microplastic polluted soil remains unexplained.…”

Section: Response Of Labile Fractions Of Soil Organic Matter To Microplasticsmentioning

confidence: 71%

“…Higher C:N ratio via microplastic addition could lead to soil nitrogen immobilization (Rillig et al, 2019). Another report by Zhou et al (2021) concluded that carbon source supply from biodegradable material of PHBV (poly…”

Section: Responses Of Available Nitrogen To Microplasticsmentioning

confidence: 99%

“…Considering the stable C-C structure of LDPE-MPs, LDPE-MPs most likely affected soil nitrogen cycling by altering soil porosity (de Souza Machado et al, 2019). While the Bio-MPs, on the one hand, contained carbonyl (=O) and hydroxyl (-OH) groups that can absorb cation like N-NH 4 + , on the other hand, it can also provide more bioavailable C to microorganisms to increase microbial biomass and intensify soil restriction (Boots et al, 2019;Chen et al, 2019a;Wan et al, 2019;Yan et al, 2020;Zhou et al, 2021). However, the dynamics of microbial communities were not measured, lowering the connection between carbon and nitrogen cycling and soil microorganisms.…”

Section: Limitation and Implicationsmentioning

confidence: 99%

“…Microplastics-induced dynamics on microbial diversity have been reported earlier and the observed shifts in microbial community composition were highly various. Zhou et al (2021) conducted a mesocosm experiment with poly (3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBA), they found the addition of PHBA to be increasing soil α-diversity. Wang et al (2020a) and Yang et al (2021) observed no significant effects of up to 10% PLA-MPs on α-diversity of soil arbuscular mycorrhizal fungal community.…”

Section: Microplastics Changed the Common Bean Rhizosphere Bacterial Communitymentioning

confidence: 99%

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From plastic mulching to microplastic pollution : An effect assessment of microplastics in the soil-plant system

Meng¹

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Effect of plastic mulching on the accumulation and distribution of macro and micro plastics in soils of two farming systems in Northwest China 23 Effect of plastic mulching on the accumulation and distribution of macro and micro plastics in soils of two farming systems in Northwest China 25Effect of plastic mulching on the accumulation and distribution of macro and micro plastics in soils of two farming systems in Northwest China 29Effect of plastic mulching on the accumulation and distribution of macro and micro plastics in soils of two farming systems in Northwest China 31 calculated by image J, 1 pixel = 0.585/60 mm (microscope at 6.4 X Zoom). The picture of the setup for identification MPs is presented in supplementary Figure S2.5. Limitation of microplastic extraction methodOnly MPs from LDPE or MPs with density < 1 g•cm -3 were able to be extracted due to the water reagent. MPs with densities higher than 1 g•cm -3 (e.g. PVC 1.45 g•cm -3 ) were not able to be extracted (Nuelle et al., 2014). However, this method provides a validated method for estimating the presence of LDPE-MPs in the soil. Data analysisThe arcsine square root transformation was applied to the mass and number of MaPs pieces to avoid violating the underlying assumptions of normality. One-way analyses of variances (ANOVAs) were applied to compare the mass and number of MaPs pieces between different fields within the same selected region and different soil layers within the same field, followed by the application of an LSD post hoc test at the p < 0.05 level. MaPs mass (kg•ha -1 ) and number (p•ha -1 ) were presented as "means ± standard deviations". MPs that were detected in the fields were presented in raw data in the unit of p•kg -1 soil due to the highly random distribution of the particles and no statistical test was performed.

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