Responses and toxin bioaccumulation in duckweed (Lemna minor) under microcystin-LR, linear alkybenzene sulfonate and their joint stress

Wang, Zhi; Xiao, Baihua; Song, Lirong; Wang, Chunbo; Zhang, Junqian

doi:10.1016/j.jhazmat.2012.05.109

Cited by 38 publications

(38 citation statements)

References 52 publications

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“…2). Our previous results also showed that low LAS concentrations (0.3 to 5 mg/L) significantly improved the proliferation of the aquatic plant Lemna minor (Wang et al 2012). Furthermore, low concentrations of other pollutants acting as inhibitors can stimulate growth.…”

Section: Discussionmentioning

confidence: 57%

“…LAS may affect the growth of M. aeruginosa in lakes because these substances can alter the membrane permeability, enzymatic activity, and tissue structure of organisms (Blasco et al 1997). In previous studies, LAS could increase the toxic effects of MCs in the terrestrial and aquatic ecosystems (Wang et al , 2012. In this study, the coexisting systems of LAS and M. aeruginosa were observed in our laboratory.…”

Section: Introductionmentioning

confidence: 51%

“…is not significantly affected when C 12 LAS concentrations are <10 mg/L . However, 0.3 to 5 mg/ L of C 12 LAS can significantly improve the proliferation of duckweed (Wang et al 2012). Furthermore, LAS affect algae, as shown in previous studies; for instance, the threshold concentrations of LAS that significantly affect algae growth differ among species (Yamane et al 1984;Lewis 1990; Van de Plassche et al 1999;Debelius et al 2008;HERA 2013).…”

Section: Introductionmentioning

confidence: 69%

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Effects of linear alkylbenzene sulfonate on the growth and toxin production of Microcystis aeruginosa isolated from Lake Dianchi

Wang

Zhang

Song

et al. 2014

Environ Sci Pollut Res

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The exogenous organic pollutant linear alkylbenzene sulfonate (LAS) pollution and Microcystis bloom are two common phenomena in eutrophic lakes, but the effects of LAS alone on Microcystis remain unclear. In the present study, we investigated the effects of LAS on the growth, photochemical efficiency, and microcystin production of Microcystis aeruginosa in the laboratory. Results showed that low LAS (≤10 mg/L) concentrations improved the growth of M. aeruginosa (12 days of exposure). High LAS (20 mg/L) concentrations inhibited the growth of M. aeruginosa on the first 8 days of exposure; afterward, growth progressed. After 12 days of exposure, the concentrations of chlorophyll a in algal cells were not significantly affected by any of LAS concentrations (0.05 to 20 mg/L) in the present study; by contrast, carotenoid and protein concentrations were significantly inhibited when LAS concentrations reached as high as 20 mg/L. After 6 and 12 days of exposure, low LAS (≤10 mg/ L) concentrations enhanced the maximal photochemical efficiency (Fv/Fm) and the maximal electron transport rate (ETRmax) of M. aeruginosa. Furthermore, LAS increased the microcystin production of M. aeruginosa. Extracellular and intracellular microcystin contents were significantly increased after M. aeruginosa was exposed to high LAS concentrations. Our results indicated that LAS in eutrophic lakes may increase the risk of Microcystis bloom and microcystin production.

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Section: Discussionmentioning

confidence: 57%

Section: Introductionmentioning

confidence: 51%

Section: Introductionmentioning

confidence: 69%

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Effects of linear alkylbenzene sulfonate on the growth and toxin production of Microcystis aeruginosa isolated from Lake Dianchi

Wang

Zhang

Song

et al. 2014

Environ Sci Pollut Res

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“…Toxic cyanobacterial blooms produce microcystins (MCs), a group of heptapeptide hepatotoxins, which adversely affect plants, animals, and human health (Carmichael et al 2001;Orr et al 2003;Wang et al 2012). Microcystins elicit toxic effects on different organisms by inhibiting protein phosphatase types 1 and 2A (MacKintosh et al 1990).…”

Section: Introductionmentioning

confidence: 99%

“…Microcystins also cause toxicity to animals and plants by inducing oxidative stress (Amado and Monserrat 2010). These substances can accumulate in animal and plant tissues (Pires et al 2004;Wang et al 2012); thus, MCs threaten the biosphere, including humans, via food chains or food webs. More than 90 analogs of MCs have been discovered; among these analogs, microcystin-LR (MCLR) is the most abundant and the most toxic (Ufelmann et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Oxidative stress responses and toxin accumulation in the freshwater snail Radix swinhoei (Gastropoda, Pulmonata) exposed to microcystin-LR

Zhang

Xie

Wang

2015

Environ Sci Pollut Res

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Microcystin-LR (MCLR) is one of the most common toxins in eutrophic freshwater ecosystems. The ecotoxicological effects of MCLR in freshwater ecosystems have been widely documented; however, the physiological effects of MCLR on freshwater snails and the underlying toxicity/ detoxification mechanisms have not been well investigated. In this laboratory study, antioxidant system responses in the hepatopancreas and the digestive tract of Radix swinhoei, a typical freshwater snail, exposed to 0.01 mg/L to 2 mg/L MCLR were explored. Antioxidant enzymes, particularly superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD), in the digestive tracts were effectively generated at 0.2 and 2 mg/L MCLR. However, SOD and CAT activities in the hepatopancreas were activated only at 0.2 mg/L MCLR. Glutathione (GSH) concentrations in the digestive tracts significantly increased at 0.01 to 0.2 mg/L MCLR; by comparison, GSH concentrations in the hepatopancreas remained stable. No oxidative damage (lipid peroxidations) occurred in the digestive tracts and the hepatopancreas when the snail was exposed to ≤0.2 mg/L MCLR. MCLR accumulation in different snail tissues was also examined. MCLR accumulated in different tissues and showed the following pattern: hepatopancreas>gonads>digestive tracts>muscles. Bioaccumulated concentrations in these four tissues increased as MCLR exposure concentrations increased; by contrast, bioaccumulation factors decreased as MCLR exposure concentrations increased. Our results indicated that R. swinhoei is sensitively responsive to MCLR by changing antioxidant system status to cope with the toxicity. Snails may be vectors of MCs that transfer MCs in eutrophic lakes via food chains or food web.

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Growth and Physiological Responses in Myriophyllum spicatum L. Exposed to Linear Alkylbenzene Sulfonate

Liu

Zhou³

et al. 2019

Enviro Toxic and Chemistry

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The exogenous organic pollutant linear alkylbenzene sulfonate (LAS) is frequently detected in water. Myriophyllum spicatum L., a submerged aquatic plant, is a popular choice for phytoremediation. The present study investigated the growth and physiological responses of M. spicatum to different concentrations of LAS (0, 0.1, 0.5, 1, 10, 50, 100, and 500 mg/L) after 14 and 28 d of treatment. After 14 d, higher LAS doses (50–100 mg/L) significantly reduced the growth of M. spicatum compared with controls. Plants died at 500 mg/L LAS. Chlorophyll a and total chlorophyll contents were markedly increased at higher doses of LAS (10–100 mg/L). Significantly enhanced peroxidase (POD) activity was found at 50 mg/L of LAS, and decreased superoxide dismutase (SOD) activity at 100 mg/L of LAS; other indices showed no significant changes under LAS stress. After 28 d, no significant effect was observed on the growth of plants exposed to LAS doses of 0.1 to 100 mg/L, whereas plants died at 500 mg/L LAS. Compared with controls. SOD activity increased significantly at 0.1 mg/L LAS and maintained the same level as controls at higher concentrations. At all LAS exposures, POD activity was higher than that of controls. Other indices for M. spicatum were not remarkably changed at 28 d. Our results indicate that the oxidative damage to M. spicatum caused by LAS stress after 28 d is clearly less than such damage at 14 d. Environ Toxicol Chem 2019;38:2073–2081. © 2019 SETAC.

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Responses and toxin bioaccumulation in duckweed (Lemna minor) under microcystin-LR, linear alkybenzene sulfonate and their joint stress

Cited by 38 publications

References 52 publications

Effects of linear alkylbenzene sulfonate on the growth and toxin production of Microcystis aeruginosa isolated from Lake Dianchi

Effects of linear alkylbenzene sulfonate on the growth and toxin production of Microcystis aeruginosa isolated from Lake Dianchi

Oxidative stress responses and toxin accumulation in the freshwater snail Radix swinhoei (Gastropoda, Pulmonata) exposed to microcystin-LR

Growth and Physiological Responses in Myriophyllum spicatum L. Exposed to Linear Alkylbenzene Sulfonate

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