Effects of polystyrene microplastics on the seed germination of herbaceous ornamental plants

Guo, Ming; Zhao, Furong; Tian, Luwei; Ni, Kaijie; Lu, Yongquan; Borah, Priyanka

doi:10.1016/j.scitotenv.2021.151100

Cited by 81 publications

(11 citation statements)

References 38 publications

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“…This indicates that 4 μm PS-MPs were more toxic to Ld mycelia, and the oxidative damage caused by PS-MPs to Ld mycelia exhibits a difference in particle size. The results of these enzyme activities and oxidative damage are basically consistent with previous results (Guo et al, 2022;Jiang et al, 2019).…”

Section: Effect Of Ps-mps On the Production Of Ros In Ld Myceliasupporting

confidence: 92%

Physiological response of ectomycorrhizal fungi (Lactarius delicious) to microplastics stress

2022

Global NEST: The International Journal

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<p>The pollution and toxicological effects of microplastics in soil have gradually attracted widespread attention, but studies on the ecological effects of microplastics on soil microorganisms and their mechanisms are still very scarce. To explore the physiological response of ectomycorrhizal fungi (Lactarius delicious, Ld) to microplastic stress, Ld was used as the test strain, and 80 nm and 4 μm monodisperse polystyrene microspheres (PS-MPs) were selected. The solid plate method and the liquid culture method were used to study the effect of PS-MPs with two particle sizes on the growth, nutrient content, reactive oxygen species (ROS) production, organic acid secretion and other indicators of the strain Ld. The results showed that with increasing PS-MPs concentration, the biomass of strain Ld decreased gradually. When the strain Ld was exposed to high concentrations of PS-MPs (200-300 mg L-1), PS-MPs with particle size of 4 μm showed stronger inhibition of biomass than PS-MPs with particle size of 80 nm. After exposure to the PS-MPs environment of two sizes, the concentration of PS-MPs increased (0-300 mg L-1), and the contents of phosphorus (P), potassium (K), H2O2 and superoxide anion radical (O2·-) in Ld mycelia increased significantly (p < 0.05). This showed that the antioxidant substances in Ld could not remove excess ROS, but could reduce the stress of microplastics by increasing the absorption of P and K from the environment, which was beneficial to its own metabolic activities. In addition, the strain Ld could secrete oxalic acid, acetic acid and succinic acid into the culture medium, which the amount of oxalic acid secreted was the highest. We speculated that strain Ld responded to the stress of microplastics by secreting a large amount of organic acids. Therefore, the mechanism of the influence of microplastics on ectomycorrhizal fungi may involve oxidative stress, and the mycelia responded to the toxicity of microplastics by secreting more organic acids and increasing the absorption of P and K. The results of this study will provide a scientific basis for the study of the acute toxicity of microplastics to ectomycorrhizal fungi.</p>

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Section: Effect Of Ps-mps On the Production Of Ros In Ld Myceliasupporting

confidence: 92%

Physiological response of ectomycorrhizal fungi (Lactarius delicious) to microplastics stress

2022

Global NEST: The International Journal

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“…In the case of micro (nano) plastics, a reduction in seed germination rates was observed in Lepidium sativum L. [41]. Similarly, the exposure of different particle sizes (2 nm and 80 nm) and various concentrations (0, 10, 50, 100, and 500 mg/L) of polystyrene MPs to herbaceous plants (Trifolium repens, Orychophragmus violaceus, and Impatiens balsamina) caused a reduction in germination rates [42]. The germination indices, such as germination percentage, germination vigor, and the germination index, of rice seedlings were recorded to be inhibited under the stress of polystyrene MPs only at higher concentrations (1000 mg/L) [43].…”

Section: Germination and Growthmentioning

confidence: 90%

Microplastic Pollution: An Emerging Threat to Terrestrial Plants and Insights into Its Remediation Strategies

Kumari

Rajput

Mandzhieva

et al. 2022

Plants

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Microplastics (MPs) are ubiquitous and constitute a global hazard to the environment because of their robustness, resilience, and long-term presence in the ecosystem. For now, the majority of research has primarily focused on marine and freshwater ecosystems, with just a small amount of attention towards the terrestrial ecosystems. Although terrestrial ecosystems are recognized as the origins and routes for MPs to reach the sea, there is a paucity of knowledge about these ecological compartments, which is necessary for conducting effective ecological risk assessments. Moreover, because of their high persistence and widespread usage in agriculture, agribusiness, and allied sectors, the presence of MPs in arable soils is undoubtedly an undeniable and severe concern. Consequently, in the recent decade, the potential risk of MPs in food production, as well as their impact on plant growth and development, has received a great deal of interest. Thus, a thorough understanding of the fate and risks MPs, as well as prospective removal procedures for safe and viable agricultural operations in real-world circumstances, are urgently needed. Therefore, the current review is proposed to highlight the potential sources and interactions of MPs with agroecosystems and plants, along with their remediation strategies.

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“…Microplastics can cause germination failure in some plants like garden cress (Lepidium sativum) [40,45], ryegrass (Lolium perenne) [46], chickpea (Cicer arietinum) [47], and in herbaceous ornamental plants such as Trifolium repens, Orychophragmus violaceus, and Impatiens balsamina [48], but species like rice, wheat and onion are not, or are only negligibly affected by MPs [39,45,49].…”

Section: Effect Of Microplastics On Germinationmentioning

confidence: 99%

Accumulation of Microplastics in Agroecosystems and Its Effects on Terrestrial Plants: A Short Review

Islam

Mondal

Angon

et al. 2023

Curr. Appl. Sci. Technol.

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Microplastics are currently a major global threat as they enter the ecosystem in large quantities daily and are able to persist in the environment for a long period of time. Current research focuses mainly on aquatic and related ecosystems; however, little information is available on the sources, possible accumulation, and pathways of microplastics in agroecosystems. It was previously thought that plastic particles could not be taken up or accumulate in plant bodies, but with modern technology, it has been observed that plastic particles are able to penetrate plants at the micro and nanoscales through transpiration pull forces, and in some cases through the leaves with foliar application. The purpose of the study was to identify potential sources of microplastics, their ways of entry into agroecosystems as well as into plants, and the effects of microplastics on the physiological processes of plants. We highlighted the harmful effects of these pollutants on agricultural ecosystems. Microplastics causes pore space blockages on root surfaces and oxidative damage. Moreover, they inhibit nutrient and water uptake, decrease germination capability, and have negative effects on product quality.

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Effects of polystyrene microplastics on the seed germination of herbaceous ornamental plants

Cited by 81 publications

References 38 publications

Physiological response of ectomycorrhizal fungi (Lactarius delicious) to microplastics stress

Physiological response of ectomycorrhizal fungi (Lactarius delicious) to microplastics stress

Microplastic Pollution: An Emerging Threat to Terrestrial Plants and Insights into Its Remediation Strategies

Accumulation of Microplastics in Agroecosystems and Its Effects on Terrestrial Plants: A Short Review

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