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Single and joint toxicity of polymethyl methacrylate microplastics and As (V) on rapeseed (Brassia campestris L.)

Chemosphere 2021 96 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 55 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Lin Wang, Ruyin Dong, Ruyin Dong, Ruyin Dong, Ruyin Dong, Lin Wang, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Rongle Liu, Rongle Liu, Rongle Liu, Rongle Liu, Rongle Liu, Rongle Liu, Rongle Liu, Rongle Liu, Rongle Liu, Rongle Liu, Rongle Liu, Rongle Liu, Yingming Xu, Weitao Liu, Lin Wang, Lin Wang, Weitao Liu, Yuebing Sun Weitao Liu, Lin Wang, Weitao Liu, Yingming Xu, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Lin Wang, Lin Wang, Lin Wang, Lin Wang, Lin Wang, Lin Wang, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Yuebing Sun Yuebing Sun Weitao Liu, Yuebing Sun Yuebing Sun Lin Wang, Lin Wang, Lin Wang, Lin Wang, Xuefeng Liang, Yuebing Sun Yuebing Sun Weitao Liu, Weitao Liu, Qingqing Huang, Yuebing Sun Yuebing Sun Weitao Liu, Weitao Liu, Yuebing Sun Yuebing Sun Weitao Liu, Weitao Liu, Weitao Liu, Yuebing Sun Weitao Liu, Yuebing Sun Weitao Liu, Weitao Liu, Yuebing Sun Qingqing Huang, Yuebing Sun

Summary

Researchers evaluated the individual and combined toxicity of polymethyl methacrylate microplastics and arsenic on rapeseed plants. They found that nanoscale plastic particles were more toxic than microscale ones, and the combination of nanoplastics with arsenic produced synergistic harmful effects on germination, growth, and arsenic accumulation in plant tissues. The study raises concerns about the combined impact of microplastics and heavy metals on crop safety in contaminated farmland.

Polymers

PMMA

Most microplastics and arsenic (As) have been released into farmland via industrial and agricultural activities, posing a potential threat to crop growth and food safety. Thus far, few studies have focused on the phytoxicity of microplastics and As to leafy vegetable. In this study, we evaluated the single and combined toxicological effects of polymethyl methacrylate (PMMA) and As(V) on rapeseed (Brassia campestris L.). Single treatments of two sizes of PMMA particles, namely PMMA nano-plastics (PMMANPs) and PMMA micro-plastics (PMMAMPs) and As(V) significantly (P < 0.05) inhibited the germination index (GI) of rapeseed. The IC indicates that PMMANPs were more toxic than PMMAMPs. Combine-pollution experiments demonstrated that the GI, biomass, root length, and sprout length of the rapeseed under the combined treatment were lower than those subjected to As(V) or PMMANPs single treatment. Analysis of variance showed that the interaction effects of PMMANPs and As(V) for GI and root length were significant, and there was synergistic interaction between PMMANPs and As(V) on rapeseed germination. PMMANPs promoted the accumulation of As in sprouts under high As(V) concentrations (40 and 60 mg/L). The activities of lipase in rapeseed generally increased under single and combined treatments of As(V) and PMMANPs, and while α-amylase activities first increased and then decreased with the increase of PMMANPs. It appears that the combined stress of microplastics and As(V) exhibited synergistic interaction on the growth of rapeseed.

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