Antioxidative response of Kandelia obovata, a true mangrove species, to polybrominated diphenyl ethers (BDE-99 and BDE-209) during germination and early growth

Farzana, Shazia; Chen, Juan; Pan, Ying; Wong, Yau Shu; Tam, N.F.Y.

doi:10.1016/j.marpolbul.2016.12.041

Cited by 27 publications

(8 citation statements)

References 40 publications

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“…Changes in the content of MDA and H 2 O 2 in plants are important indicators of oxidative stress. H 2 O 2 is one of the most significant reactive oxygen species (ROS), and its overproduction promotes lipid oxidation and increases MDA content [58,59]. In the present study, MDA and H 2 O 2 content increased under treatment (Figure 1).…”

Section: Membrane Damage and Oxidative Stress Of K Obovata Seedlings ...supporting

confidence: 51%

Physiological and Biochemical Responses of Kandelia obovata to Upwelling Stress

Wang

Dong

et al. 2022

Water

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Mangroves growing in intertidal areas are faced with various stresses caused by coastal human activities and oceanic and atmospheric sources. Although the study of the physiological and biochemical characteristics of mangroves has been developing over the past four decades, the effect of upwelling on mangroves in plants stress resistance has seldom been investigated. Here, changes in the physiological and biochemical characteristics of the leaves of Kandelia obovata seedlings in response to upwelling were investigated (air temperature: 25 °C; water temperature: control 25 °C, 13 °C, and 5 °C; salinity: 10‰). The results revealed that upwelling treatment caused an increase in chlorophyll content but a decrease in photosynthetic fluorescence parameters. Hydrogen peroxide (H2O2) production and malondialdehyde activity (MDA) increased with the decrease in upwelling temperature. The proline content increased under upwelling stress, whereas the soluble sugar content decreased. Further, the activities of antioxidant enzymes, such as superoxide dismutase activity (SOD) and peroxidase activity (POD), showed an increasing trend during the treatment, while catalase activity (CAT) decreased. It was evidenced that upwelling stress triggered the physiological and biochemical responses of Kandelia obovata seedlings. This effect became more intense as the upwelling temperature decreased, and all these indicators showed different responses to upwelling stress. Through synthesizing more energy and regulating enzyme activity and osmotic pressure, the leaves of K. obovata formed a resistance mechanism to short-term upwelling.

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Section: Membrane Damage and Oxidative Stress Of K Obovata Seedlings ...supporting

confidence: 51%

Physiological and Biochemical Responses of Kandelia obovata to Upwelling Stress

Wang

Dong

et al. 2022

Water

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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%

“…(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.…”

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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

horts

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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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“…BDE-209 can cause morphological, physiological and biochemical alterations in exposed plants (Xie et al 2013, Li et al 2018. Due to the higher molecular mass or lower solubility, the toxicity of BDE-209 (higher brominated PBDE) is significantly less than that of lower brominated congeners (such as BDE-47 and BDE-99) (Zhang et al 2013, Farzana et al 2016, Zhao et al 2019. Lower plants are more sensitive to PBDE-induced toxicity than higher plants, and higher terrestrial plants are more sensitive to BDE-209 than higher aquatic plants (e.g.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the phytotoxicity of decabromodiphenyl ether (BDE-209) in Chinese cabbage

Meng¹,

Zhao²,

WANG³

et al. 2022

Biol. plant.

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Decabromodiphenyl ether (BDE-209), a major component of brominated flame retardants, has been detected in considerable amounts in the soil. Given that BDE-209 is toxic, ubiquitous, and persistent, it may cause toxic effects on vegetables planted in contaminated soil. In this study, Chinese cabbage seedlings cultivated in the soil contaminated by BDE-209 (5 -20 mg kg -1 ) for 60 d were investigated to evaluate the phytotoxicity of BDE-209 in terms of growth, physiological responses, photosynthetic function, and antioxidant capacity. The results showed that BDE-209-induced phytotoxicity was reflected in the growth suppression, the decrease of chlorophyll content and soluble protein content, and especially in the reduced photosynthetic parameters (net photosynthetic rate and stomatal conductance). BDE-209 showed direct toxicities to plasma membranes causing their elevated permeability. In addition, BDE-209 induced the overproduction of reactive oxygen species (ROS), membrane lipid peroxidation and protein carbonylation, manifesting in the increased content of O2 •-, H2O2, malondialdehyde, and carbonyl. Chinese cabbage seedlings activated the antioxidant defence system (superoxide dismutase and peroxidase) to scavenge the ROS and counter-balance the oxidative stress caused by BDE-209, while the toxicity could not be effectively alleviated. Our study will provide valuable information for further understanding of the phytotoxicity of polybrominated diphenyl ethers.

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Antioxidative response of Kandelia obovata, a true mangrove species, to polybrominated diphenyl ethers (BDE-99 and BDE-209) during germination and early growth

Cited by 27 publications

References 40 publications

Physiological and Biochemical Responses of Kandelia obovata to Upwelling Stress

Physiological and Biochemical Responses of Kandelia obovata to Upwelling Stress

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

Evaluation of the phytotoxicity of decabromodiphenyl ether (BDE-209) in Chinese cabbage

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