Physiological response of cucumber (Cucumis sativus L.) leaves to polystyrene nanoplastics pollution

Li, Zhenxia; Li, Ruijing; Li, Qingfei; Zhou, Junguo; Wang, Guangyin

doi:10.1016/j.chemosphere.2020.127041

Cited by 198 publications

(63 citation statements)

References 54 publications

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“…With exposure to 5 µm PS MP, the CAT activity in the roots of V. faba decreased, whereas the SOD and POD activities increased. Exposure to PS nanoplastics promoted the antioxidative enzyme activities of Cucumis sativus L. and Oryza sativa L. (Li et al 2020 ; Zhou et al 2021 ).…”

Section: Resultsmentioning

confidence: 99%

Effects of polypropylene, polyvinyl chloride, polyethylene terephthalate, polyurethane, high-density polyethylene, and polystyrene microplastic on Nelumbo nucifera (Lotus) in water and sediment

Esterhuizen-Londt

Kim

2021

Environ Sci Pollut Res

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Plastic waste is recognised as hazardous, with the risk increasing as the polymers break down in nature to secondary microplastics or even nanoplastics. The number of studies reporting on the prevalence of microplastic in every perceivable niche and bioavailable to biota is dramatically increasing. Knowledge of the ecotoxicology of microplastic is advancing as well; however, information regarding plants, specifically aquatic macrophytes, is still lacking. The present study aimed to gain more information on the ecotoxicological effects of six different polymer types as 4 mm microplastic on the morphology (germination and growth) and the physiology (catalase and glutathione S-transferase activity) of the rooted aquatic macrophyte, Nelumbo nucifera. The role of sediment was also considered by conducting all exposure both in a sediment-containing and sediment-free exposure system. Polyvinyl chloride and polyurethane exposures caused the highest inhibition of germination and growth compared to the control. However, the presence of sediment significantly decreased the adverse effects. Catalase activity was increased with exposure to polyvinyl chloride, polyurethane, and polystyrene, both in the presence and absence of sediment but more so in the sediment-free system. Glutathione S-transferase activity was significantly increased with exposure to polypropylene, polyvinyl chloride, and polyethylene terephthalate in the sediment-free system and exposure to polyethylene terephthalate and polyurethane in the absence of sediment. There was no clear correlation between the morphological and physiological effects observed. Further studies are required to understand the underlying toxicity mechanism of microplastics.

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Section: Resultsmentioning

confidence: 99%

Effects of polypropylene, polyvinyl chloride, polyethylene terephthalate, polyurethane, high-density polyethylene, and polystyrene microplastic on Nelumbo nucifera (Lotus) in water and sediment

Esterhuizen-Londt

Kim

2021

Environ Sci Pollut Res

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“…Due to the widespread distribution of nanoplastics in the agroecosystems, their presence in crop plants have been reported in different species 3,4,12,15,33,34 . Several methods have been developed to quantify the nanoplastics in plant samples, such as fluorescence imaging and the pyrolysis gas chromatography/mass spectrometry 35 .…”

Section: Discussionmentioning

confidence: 99%

“…The ROS burst induced by exposure to nanoplastics has been found in various plant species, as exemplified by increased peroxide production along with increased expression of peroxidases in roots 4,12 . In cucumber, the levels of photosynthetic pigments, and concentrations of soluble sugar and proline in leaf are significantly reduced by exposure to 100 nm polystyrene nanoplastics, which may be due to the effects of benzene ring resulting from the degradation of polystyrene nanoplastics 15 . In Allium cepa , cytological analysis of the root meristems revealed cytotoxicity and genotoxicity were caused by a low dose of nanoplastics exposure (0.1 g L ‐1 ), and the nanoplastics induced damage to roots could be attributed to mechanical surface contact in root external layers 16 .…”

Section: Introductionmentioning

confidence: 99%

Melatonin reduces nanoplastic uptake, translocation, and toxicity in wheat

Guo

Wang

et al. 2021

Journal of Pineal Research

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With increasing plastic production and consumption, large amounts of polystyrene nanoplastics are accumulated in soil due to improper disposal causing pollution and deleterious effects to environment. However, little information is available about how to alleviate the adverse impacts of nanoplastics on crops. In this study, the involvement of melatonin in modulating nanoplastic uptake, translocation, and toxicity in wheat plant was investigated. The results demonstrated that exogenous melatonin application reduced the nanoplastic uptake by roots and their translocation to shoots via regulating the expression of genes associated with aquaporin, including the upregulation of the TIP2‐9, PIP2, PIP3, and PIP1.2 in leaves and TIP2‐9, PIP1‐5, PIP2, and PIP1.2 in roots. Melatonin activated the ROS scavenging system to maintain a better redox homeostasis and ameliorated the negative effects of nanoplastics on carbohydrate metabolism, hence ameliorated the plant growth and enhanced the tolerance to nanoplastics toxicity. This process was closely related to the exogenous melatonin application induced melatonin accumulation in leave. These results suggest that melatonin could alleviate the adverse effects of nanoplastics on wheat, and exogenous melatonin application might be used as a promising management strategy to sustain crop production in the nanoplastic‐polluted soils.

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“…Pflugmacher et al (2021) investigated the phytotoxic effects of both new and aged polycarbonate (PC) in L. sativum and showed that new and short‐term aged PC can induce catalase activity and decrease the content of chlorophyll a and b. Leaching of toxic chemicals from PC was responsible for the observed negative impacts, and thus long‐term aged PC appeared to have reduced effects on L. sativum . Li, Li, Li, Zhou, & Wang (2020) reported that the benzene ring released as a result of degradation of polystyrene nanoparticles in leaves of cucumber ( C. sativus ) was responsible for altered chlorophyll content and sugar metabolism. Another study, investigating the cytotoxic and genotoxic effects of polylactic acid (PLA) on A. cepa , showed that the degradation of PLA under composting conditions releases toxic leachates that were responsible for the inhibition of seeds germination, reduction of mitotic index, and induction of various chromosomal abnormalities (Souza et al, 2013).…”

Section: Micro/nanoplastic Induced Toxicities In Plantsmentioning

confidence: 99%

“…photosynthetic pigment production in the chloroplast(Li, Li, Li, Zhou, & Wang, 2020; C. Q. Zhou et al, 2021) can support this concept Sun et al (2020). showed the upregulation of biosynthetic and metabolic processes for the synthesis of anthocyanin-containing compounds, flavonoids, and terpenoids, and the downregulation of peroxidases which were responsible for the observed phenotypes in roots.…”

mentioning

confidence: 94%

Occurrence and distribution of micro/nanoplastics in soils and their phytotoxic effects: A review

Maity

Guchhait

Sarkar

et al. 2022

Plant Cell & Environment

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Some recent studies have reviewed the occurrence and phytotoxicity of micro/ nanoplastics, but their distribution in the soil environment, mechanisms of uptake by roots and the mode of action are unclear. Thus, this review comprehensively represents the relative abundance of micro/nanoplastics in different soil types and their toxicities in plants with insights into their partitioning to different soil matrices, uptake mechanisms, and the mode of action. Partitioning of micro/nanoplastics to different soil matrices (like-soil particles, naturally occurring soil organic matters, pore waters and soil fauna) could modify their bioavailability to plants. The small micro/nanoplastic particles can be taken up by roots through the apoplastic and symplastic pathways. In this regard, cellular endocytosis and aquaporin might play a significant role. The shape of the polymers can also regulate their uptake, and the polymers with spherical shapes are more easily absorbed by roots than the polymers with other shapes. Bioaccumulation of micro/nanoplastic induces oxidative stress, which, in turn, causes alterations of gene expressions and different metabolic pathways responsible for plant growth, biomass production and synthesis of secondary metabolites.

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Physiological response of cucumber (Cucumis sativus L.) leaves to polystyrene nanoplastics pollution

Cited by 198 publications

References 54 publications

Effects of polypropylene, polyvinyl chloride, polyethylene terephthalate, polyurethane, high-density polyethylene, and polystyrene microplastic on Nelumbo nucifera (Lotus) in water and sediment

Effects of polypropylene, polyvinyl chloride, polyethylene terephthalate, polyurethane, high-density polyethylene, and polystyrene microplastic on Nelumbo nucifera (Lotus) in water and sediment

Melatonin reduces nanoplastic uptake, translocation, and toxicity in wheat

Occurrence and distribution of micro/nanoplastics in soils and their phytotoxic effects: A review

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