Biodegradable microplastics enhance soil microbial network complexity and ecological stochasticity

Sun, Yuanze; Li, Xinfei; Cao, Na; Duan, Chongxue; Ding, Changfeng; Huang, Yi; Wang, Jie

doi:10.1016/j.jhazmat.2022.129610

Cited by 97 publications

(10 citation statements)

References 69 publications

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“…Topological indices (i.e., node number, edge number, density, average degree, centrality, and modularity) were calculated. Within-module connectivity (Z i ) and among-module connectivity (P i ) were calculated for the module hubs (nodes with Z i ≥ 2.5 and P i < 0.62), connectors (nodes with Z i < 2.5 and P i ≥ 0.62), and network hubs (Z i ≥ 2.5 and P i ≥ 0.62; Sun et al, 2022 ).…”

Section: Methodsmentioning

confidence: 99%

Comparative metagenomic analysis reveals rhizosphere microbial community composition and functions help protect grapevines against salt stress

Wang

et al. 2023

Front. Microbiol.

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IntroductionSoil salinization is a serious abiotic stress for grapevines. The rhizosphere microbiota of plants can help counter the negative effects caused by salt stress, but the distinction between rhizosphere microbes of salt-tolerant and salt-sensitive varieties remains unclear.MethodsThis study employed metagenomic sequencing to explore the rhizosphere microbial community of grapevine rootstocks 101-14 (salt tolerant) and 5BB (salt sensitive) with or without salt stress.Results and DiscussionCompared to the control (treated with ddH2O), salt stress induced greater changes in the rhizosphere microbiota of 101-14 than in that of 5BB. The relative abundances of more plant growth-promoting bacteria, including Planctomycetes, Bacteroidetes, Verrucomicrobia, Cyanobacteria, Gemmatimonadetes, Chloroflexi, and Firmicutes, were increased in 101-14 under salt stress, whereas only the relative abundances of four phyla (Actinobacteria, Gemmatimonadetes, Chloroflexi, and Cyanobacteria) were increased in 5BB under salt stress while those of three phyla (Acidobacteria, Verrucomicrobia, and Firmicutes) were depleted. The differentially enriched functions (KEGG level 2) in 101-14 were mainly associated with pathways related to cell motility; folding, sorting, and degradation functions; glycan biosynthesis and metabolism; xenobiotics biodegradation and metabolism; and metabolism of cofactors and vitamins, whereas only the translation function was differentially enriched in 5BB. Under salt stress, the rhizosphere microbiota functions of 101-14 and 5BB differed greatly, especially pathways related to metabolism. Further analysis revealed that pathways associated with sulfur and glutathione metabolism as well as bacterial chemotaxis were uniquely enriched in 101-14 under salt stress and therefore might play vital roles in the mitigation of salt stress on grapevines. In addition, the abundance of various sulfur cycle-related genes, including genes involved in assimilatory sulfate reduction (cysNC, cysQ, sat, and sir), sulfur reduction (fsr), SOX systems (soxB), sulfur oxidation (sqr), organic sulfur transformation (tpa, mdh, gdh, and betC), increased significantly in 101-14 after treatment with NaCl; these genes might mitigate the harmful effects of salt on grapevine. In short, the study findings indicate that both the composition and functions of the rhizosphere microbial community contribute to the enhanced tolerance of some grapevines to salt stress.

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Section: Methodsmentioning

confidence: 99%

Comparative metagenomic analysis reveals rhizosphere microbial community composition and functions help protect grapevines against salt stress

Wang

et al. 2023

Front. Microbiol.

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“…Soil biota are indicators of plant health and nutrient cycling and have a significant impact on soil ecosystem services. Recent studies have reported that PE MPs have the potential to alter microbial community composition and activities as well as the stability of microfood webs . Similarly, polyvinyl chloride (PVC) is one of the most commonly detected MPs in soil environments, and it has also substantial impacts on microbial abundance (such as Burkholderiaceae) and network stability, with wide implications for crop growth. , Such impacts on soil microbes are due to either changes in soil properties or the release of impurities and chemical additives from plastics .…”

Section: Introductionmentioning

confidence: 99%

Nano-Iron Oxide (Fe₃O₄) Mitigates the Effects of Microplastics on a Ryegrass Soil–Microbe–Plant System

Liu,

Iqbal,

Gui

et al. 2023

ACS Nano

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“…High altitude not only reduced the diversity of microbial communities, the complexity of co-occurrence networks and the versatility of ecosystems, but also reveals that the impact of microbial community diversity on versatility is indirectly driven by the complexity of microbial networks (Chen et al, 2022). The study also found that biodegradable microplastics can improve the complexity of the community, with higher network scale, connectivity, average clustering coe cient and more key species (Sun et al, 2022). Under the warming condition, the molecular ecological network becomes more stable (Yuan et al, 2021).…”

Section: Discussionmentioning

confidence: 82%

Shifts in maize microbial communities and networks are correlated with the soil soil chemical property under different fertilization regimes

Zhang

et al. 2023

Preprint

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Purpose: Substituting chemical fertilizer with organic fertilizer is an important agricultural practice that improves crop yield but also affects soil biogeochemical cycles. Methods: In this study, a corn field experiment was conducted to investigate the effects of NPK fertilizer (NPK), organic fertilizer (OF) or their combination (NPK+OF) on soil chemical properties, bacterial and fungal community structures and diversity using high-throughput sequencing technology. Result: Results showed the application of organic fertilizer and NPK combined organic fertilizer increased OM, TN, TP, AN, AP and AK level. Combined with α-diversity analysis, the application of fertilizers led to a decrease in soil bacterial and fungal diversity. Compared with CK, NPK, OF or NPK+OF significantly increased abundance of dominant bacteria (Acidobacteriota, and Gemmatimonadota) and fungi(Basidiomycota). Bacterial and fungal community composition and structure were different among all four treatments. Network analysis showed that fertilization produced fewer connections among bacterial and fungal taxa in the microbial community, especially in the combination of NPK and organic fertilizer. Redundancy analysis combined with Mantel test further found that soil organic matter (OM) and available N and P were main environmental factors driving microbial community variation. Conclusion: Therefore, using organic fertilizer or biological fertilizer combined with chemical fertilizer to improve the status of soil AN, AP and SOC is a promising method to maintain the balance of soil microorganism in continuous cropping single cropping cotton field.

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Biodegradable microplastics enhance soil microbial network complexity and ecological stochasticity

Cited by 97 publications

References 69 publications

Comparative metagenomic analysis reveals rhizosphere microbial community composition and functions help protect grapevines against salt stress

Comparative metagenomic analysis reveals rhizosphere microbial community composition and functions help protect grapevines against salt stress

Nano-Iron Oxide (Fe₃O₄) Mitigates the Effects of Microplastics on a Ryegrass Soil–Microbe–Plant System

Shifts in maize microbial communities and networks are correlated with the soil soil chemical property under different fertilization regimes

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Biodegradable microplastics enhance soil microbial network complexity and ecological stochasticity

Cited by 97 publications

References 69 publications

Comparative metagenomic analysis reveals rhizosphere microbial community composition and functions help protect grapevines against salt stress

Comparative metagenomic analysis reveals rhizosphere microbial community composition and functions help protect grapevines against salt stress

Nano-Iron Oxide (Fe3O4) Mitigates the Effects of Microplastics on a Ryegrass Soil–Microbe–Plant System

Shifts in maize microbial communities and networks are correlated with the soil soil chemical property under different fertilization regimes

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Nano-Iron Oxide (Fe₃O₄) Mitigates the Effects of Microplastics on a Ryegrass Soil–Microbe–Plant System