Unveiling the impact of biodegradable polylactic acid microplastics on meadow soil health DOI Creative Commons
Shuming Liu, Binglin Chen,

Kaili Wang

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 13, 2024

Abstract Soil microplastics (MPs) pollution has garnered considerable attention in recent years. The use of biodegradable plastics for mulching led to significant quantities plastic entering agro-ecosystems. However, the effects polylactic acid (PLA) on meadow soils remain underexplored. This study investigates impacts PLA varying particle sizes and concentrations soil physicochemical properties, enzyme activities, microbial communities through a 60-day incubation experiment. PLA-MPs increased pH, organic matter (SOM), total nitrogen (TN) available potassium (AK) content, as well enhanced activities superoxide dismutase (S-SOD), peroxidase (S-POD), catalase (S-CAT), β-glucosidase(S-β-GC) urease (S-UE) activities. Conversely, decrease alkaline phosphatase (S-ALP) activity was observed. influence properties more pronounced with larger sizes, whereas smaller particles had greater effect Additionally, an increase abundance Acidobacteriota, Chloroflexi, Gemmatimonadota, while Proteobacteria, Actinobacteriota, Patescibacteria declined. Mental test analysis indicated that AK, S-UE, S-β-GC are primary factors influencing community composition. Phylogenetic Investigation Communities by Reconstruction Unobserved States (PICRUSt2) demonstrated modify bacterial metabolic pathways. Our results suggest size concentration differentially affect nutrients structure function, observed at higher concentrations.

Language: Английский

Mechanistic Insight into Degradation of Dibutyl Phthalate by Microorganism in Sediment-Water Environment: Metabolic Pathway, Community Succession, Keystone Phylotypes and Functional Genes DOI
Fangyuan Chen,

J. Paul Chen,

Yuchi Chen

et al.

Published: Jan. 1, 2024

Language: Английский

Citations

0
Effects of Plastic Mulch Residue on Soil Fungal Communities in Cotton DOI Creative Commons
Wenyue Song, Hongqi Wu, Zequn Xiang

et al.

Agriculture, Journal Year: 2024, Volume and Issue: 14(8), P. 1365 - 1365

Published: Aug. 15, 2024

Plastic mulch plays a crucial role in agricultural production arid and semi-arid regions, positively impacting crop yields, salt suppression, seedling protection. However, as the usage of plastic extends over time, residue accumulation becomes significant issue these regions. To clarify effects on soil fungi, this study focused three typical cotton-growing areas Xinjiang. Using high-throughput sequencing technology, analyzed changes fungal community structure diversity rhizosphere non-rhizosphere soils across 27 cotton fields under different levels residue: 0–75 kg/ha, 75–150 150–225 kg/ha. The results indicated that Ascomycota Basidiomycota were dominant phyla all treatments. Increasing reduced richness soil, with greater observed fungi compared to bulk fungi. α-diversity showed an increasing trend, followed by decrease residue, Aksu Bazhou, peaking at Conversely, Changji, decreased residue. associated significantly altered had Different varying β-diversity influencing Bazhou Changji Bazhou. Overall, exerted degrees influence composition cotton, potentially reducing altering levels.

Language: Английский

Citations

0
Unveiling the impact of biodegradable polylactic acid microplastics on meadow soil health DOI Creative Commons
Shuming Liu, Binglin Chen,

Kaili Wang

et al.

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 13, 2024

Abstract Soil microplastics (MPs) pollution has garnered considerable attention in recent years. The use of biodegradable plastics for mulching led to significant quantities plastic entering agro-ecosystems. However, the effects polylactic acid (PLA) on meadow soils remain underexplored. This study investigates impacts PLA varying particle sizes and concentrations soil physicochemical properties, enzyme activities, microbial communities through a 60-day incubation experiment. PLA-MPs increased pH, organic matter (SOM), total nitrogen (TN) available potassium (AK) content, as well enhanced activities superoxide dismutase (S-SOD), peroxidase (S-POD), catalase (S-CAT), β-glucosidase(S-β-GC) urease (S-UE) activities. Conversely, decrease alkaline phosphatase (S-ALP) activity was observed. influence properties more pronounced with larger sizes, whereas smaller particles had greater effect Additionally, an increase abundance Acidobacteriota, Chloroflexi, Gemmatimonadota, while Proteobacteria, Actinobacteriota, Patescibacteria declined. Mental test analysis indicated that AK, S-UE, S-β-GC are primary factors influencing community composition. Phylogenetic Investigation Communities by Reconstruction Unobserved States (PICRUSt2) demonstrated modify bacterial metabolic pathways. Our results suggest size concentration differentially affect nutrients structure function, observed at higher concentrations.

Language: Английский

Citations

0