The effect of manure-borne doxycycline combined with different types of oversized microplastic contamination layers on carbon and nitrogen metabolism in sandy loam

Chen, Jingyuan; Liu, Shuo; Deng, Wei-Kang; Niu, Shi-Hua; Liao, Xin-Di; Xiang, Lei; Xing, Si-Cheng

doi:10.1016/j.jhazmat.2023.131612

Cited by 9 publications

(2 citation statements)

References 94 publications

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“…Similarly, the relative abundance increased from 0.11 ± 0.01 to 6.70 ± 0.97% for Ferruginibacter, known as a type of HB hydrolyzing organic matter . The relative abundances of other representative denitrifiers such as norank_f_Chitinophagaceae , Moheibacter, and Chryseolinea also increased significantly ( p < 0.05) in the experimental reactor (Figure C).…”

Section: Resultsmentioning

confidence: 99%

Polyvinyl Chloride Microplastics Facilitate Nitrous Oxide Production in Partial Nitritation Systems

He,

Liu,

et al. 2024

Environ. Sci. Technol.

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Partial nitritation (PN) is an important partner with anammox in the sidestream line treating high-strength wastewater and primarily contributes to nitrous oxide (N 2 O) emissions in such a hybrid system, which also suffers from ubiquitous microplastics because of the growing usage and disposal levels of plastics. In this study, the influences of polyvinyl chloride microplastics (PVC-MPs) on N 2 O-contributing pathways were experimentally revealed to fill the knowledge gap on N 2 O emission from the PN system under microplastics stress. The long-term results showed that the overall PN performance was hardly affected by the low-dose PVC-MPs (0.5 mg/L) while obviously deteriorated by the high dose (5 mg/L). According to the batch tests, PVC-MPs reduced biomassspecific ammonia oxidation rates (AORs) by 5.78−21.94% and stimulated aerobic N 2 O production by 9.22−88.36%. Further, upon increasing dissolved oxygen concentrations from 0.3 to 0.9 mg O 2 /L, the degree of AOR inhibition increased but that of N 2 O stimulation was lightened. Site preference analysis in combination with metabolic inhibitors demonstrated that the contributions of hydroxylamine oxidation and heterotrophic denitrification to N 2 O production at 0.3 mg O 2 /L were enhanced by 18.84 and 10.34%, respectively, accompanied by a corresponding decreased contribution of nitrifier denitrification. Finally, the underlying mechanisms proposed for negative influences of PVC-MPs were bisphenol A leaching and reactive oxygen species production, which led to more cell death, altered sludge properties, and reshaped microbial communities, further resulting in enhanced N 2 O emission. Overall, this work implied that the ubiquitous microplastics are a hidden danger that cannot be ignored in the PN system.

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Section: Resultsmentioning

confidence: 99%

Polyvinyl Chloride Microplastics Facilitate Nitrous Oxide Production in Partial Nitritation Systems

He,

Liu,

et al. 2024

Environ. Sci. Technol.

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“…In this study, most taxa enriched in the +P group have been reported to be related to soil nutrient cycling or plant growth. For example, the genus Ohtaekwangia affects the carbon (C) and N cycles by participating in carbon fixation, methane metabolism, assimilatory nitrate reduction, and denitrification (Chen et al, 2023). The nitrogen-fixing bacteria Lysobacter promotes plant growth by providing nitrogen sources for plants (H. Hu et al, 2021).…”

Section: 2mentioning

confidence: 99%

The effect of phosphorus content on wheat root‐associated prokaryotic community depends on growth stage and variety

Feng,

Liu,

et al. 2024

Soil Science Soc of Amer J

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Wheat (Triticum aestivum L.) root‐associated microbes play an indispensable role in helping plants obtain phosphorus (P) from soil. However, the relationships among soil P content, wheat root‐associated microorganisms and plants are still not fully understood. Therefore, revealing the effects of soil P content on the root‐associated microbes in different crop varieties at different growth stages is important for plant nutrient management. In this study, the variations of prokaryotic communities were investigated in the endosphere and rhizosphere of three wheat varieties growing in soils with different P content and at different growth stages. The key findings indicated that compartment niche and growth stage were the primary factors to shape wheat root‐associated prokaryotic community assembly under different soil P content. Soil P content mainly affected the prokaryotic community in rhizosphere rather than in endosphere. The effects of soil P content on root‐associated prokaryotic communities in different wheat varieties were different, and varied with the growth stage. Under low P treatment, there was greater variation in prokaryotic communities among varieties. In addition, compared with that in P‐deficient soil, wheat rhizosphere enriched more taxa and functions related to plant growth in the P‐sufficient soil. P‐efficient variety (ZGC) enriched more genera that positively related to plant growth in P‐sufficient soil. This study comprehensively revealed the influences of soil P content on wheat root‐associated prokaryotic communities, and the relationships among soil P content, wheat root‐associated prokaryotic community and plant.This article is protected by copyright. All rights reserved

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Nitrogen removal performance and mechanism in constructed wetlands under saline conditions: Role of Canna indica inoculated with Piriformospora indica

Cui,

Cai,

Zhang

et al. 2024

Bioresource Technology

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The effect of manure-borne doxycycline combined with different types of oversized microplastic contamination layers on carbon and nitrogen metabolism in sandy loam

Cited by 9 publications

References 94 publications

Polyvinyl Chloride Microplastics Facilitate Nitrous Oxide Production in Partial Nitritation Systems

Polyvinyl Chloride Microplastics Facilitate Nitrous Oxide Production in Partial Nitritation Systems

The effect of phosphorus content on wheat root‐associated prokaryotic community depends on growth stage and variety

Nitrogen removal performance and mechanism in constructed wetlands under saline conditions: Role of Canna indica inoculated with Piriformospora indica

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