Toxic effects and mechanism of 2,2′,4,4′-tetrabromodiphenyl ether (BDE-47) on Lemna minor

Qiu, Nianwei; Wang, Renjun; Sun, Yuan; Wang, Xiushun; Jiang, Dacheng; Meng, Yuting; Zhou, Feng

doi:10.1016/j.chemosphere.2017.10.148

Cited by 22 publications

(18 citation statements)

References 49 publications

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“…Antioxidant defense system. Previous studies have reported that PBDEs can induce the generation of ROS and cause remarkable oxidative damage to plants (Farzana et al, 2017;Qiu et al, 2018;Wang et al, 2014;Xie et al, 2013;Xu et al, 2015). The antioxidases play an important role in detoxifying the oxidative stress caused by PBDEs.…”

Section: Resultsmentioning

confidence: 99%

“…Similar toxic effects of BDE-47 also have been reported in other higher plants. After a 14-d exposure to 5 to 15 mg · L -1 BDE-47, duckweed plants were significantly suppressed and died at 20 mg · L -1 BDE-47 (Qiu et al, 2018;Sun et al, 2016). The germination rate and growth of maize were markedly inhibited by 15 mg · L -1 BDE-47 (Xu et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

“…(Fonnum and Mariussen, 2009). At present, studies on the toxicity of PBDEs have been commonly conducted on animals (Macaulay et al, 2015), whereas the toxicological studies on plants are limited to only a few plant materials, including marine microalgae (Kallqvist et al, 2006), mangrove (Farzana et al, 2017;Farzana and Tam, 2018;Wang et al, 2014), maize (Xu et al, 2015), duckweed (Qiu et al, 2018;Sun et al, 2016), rice Li et al, 2018), and ryegrass (Xie et al, 2013).…”

mentioning

confidence: 99%

“…The toxic effects of PBDEs on the growth and development of higher plants include the reduction of the germination rate, inhibition of root and stem elongation, leaf shedding, and significant decrease in biomass (Farzana et al, 2017;Li et al, 2018;Qiu et al, 2018;Wang et al, 2014;Xu et al, 2015). The key mechanism of the phytotoxicity induced by PBDEs is the overproduction of reactive oxygen species (ROS) (Farzana et al, 2017;Qiu et al, 2018;Wang et al, 2014;Xie et al, 2013;Xu et al, 2015). The excessive ROS can cause oxidative stress, including peroxidation of cellular components and enzyme inactivation, which disturbs the normal physiological metabolism of plants.…”

mentioning

confidence: 99%

“…The excessive ROS can cause oxidative stress, including peroxidation of cellular components and enzyme inactivation, which disturbs the normal physiological metabolism of plants. The latest studies show that PBDEs can damage the membranes directly and affect the electron transport of chloroplasts and mitochondria, leading to the electron leakage and the generation of ROS (Begovi c et al, 2016;Pazin et al, 2015;Pereira et al, 2013;Qiu et al, 2018).…”

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confidence: 99%

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Toxic Effects of 2,2′,4,4′-Tetrabromodiphenyl Ether on Chinese Cabbage

Meng

Liu

Ping

et al. 2018

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Additional index words. polybrominated diphenyl ethers (PBDEs), Chinese cabbage, physiological effects, photosynthesis, antioxidase Abstract. 2,2#,4,4#-tetrabromodiphenyl ether (BDE-47) is one of the most toxic polybrominated diphenyl ethers (PBDEs). The toxic effects of BDE-47 on Chinese cabbage seedlings were analyzed in this study. After a 30-day hydroponic exposure to BDE-47 at different concentrations (25, 50, 75, and 100 mg · L L1 ), the fresh weight of Chinese cabbage seedlings was significantly decreased, whereas their root:shoot ratio was increased, indicating that BDE-47 inhibited the growth of the plant, especially the overground parts. The water content, chlorophyll content, and protein content of Chinese cabbage leaves also markedly decreased with the increase of the BDE-47 concentration. In addition, BDE-47 weakened the photosynthetic capacity of the leaves, which was supported by the decreased photosynthetic parameters [net photosynthetic rate (P n ) and stomatal conductance (g S )]. Although the activities of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) in the leaves were enhanced after exposure to BDE-47, the increased malondialdehyde (MDA) content attested to the existence of membrane lipid peroxidation. The increased plasma membrane permeability and the decreased chlorophyll fluorescence parameters [the maximum quantum yield of PSII photochemistry at t = 0 (F v /F m ), photosystem II (PSII) reaction centers (RCs) per cross section (CS) (RC/CS), absorption energy flux per CS (ABS/CS), trapped energy flux per CS (TR o /CS), electron transport flux per CS (ET o /CS), performance index on the absorption basis (PI abs ), and driving force for photosynthesis (DF)] further proved that the plasma membrane and photosynthetic membrane were damaged by BDE-47. Our study demonstrated the phytotoxicities of BDE-47 to Chinese cabbage, which can provide valuable information for understanding the toxicity of BDE-47 on vegetables.

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