The effect of lead on the growth, content of primary metabolites, and antioxidant response of green alga Acutodesmus obliquus (Chlorophyceae)

Piotrowska‐Niczyporuk, Alicja; Bajguz, Andrzej; Talarek, Marta; Bralska, Monika; Zambrzycka, Elżbieta

doi:10.1007/s11356-015-5118-y

Cited by 69 publications

(36 citation statements)

References 54 publications

(92 reference statements)

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“…The growth inhibition increased with the increasing of exposure time. This result was consistent with other previous reports, in which the toxicity of lead [16], cadmium [17] and chlorine [18] to algae was related to the incubation time. After 96 h exposure, the inhibition rates relative to the control group of 7.2, 10.8, and 14.4 μM Th were 22.5%, 55.1%, and 67.8%, respectively.…”

Section: Resultssupporting

confidence: 94%

Influence of Speciation of Thorium on Toxic Effects to Green Algae Chlorella pyrenoidosa

Peng

Ding

et al. 2017

IJMS

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Thorium (Th) is a natural radioactive element present in the environment and has the potential to be used as a nuclear fuel. Relatively little is known about the influence and toxicity of Th in the environment. In the present study, the toxicity of Th to the green algae Chlorella pyrenoidosa (C. pyrenoidosa) was evaluated by algal growth inhibition, biochemical assays and morphologic observations. In the cultural medium (OECD TG 201), Th(NO3)4 was transformed to amorphous precipitation of Th(OH)4 due to hydrolysis. Th was toxic to C. pyrenoidosa, with a 96 h half maximum effective concentration (EC50) of 10.4 μM. Scanning electron microscopy shows that Th-containing aggregates were attached onto the surface of the algal cells, and transmission electron microscopy indicates the internalization of nano-sized Th precipitates and ultrastructural alterations of the algal cells. The heteroagglomeration between Th(OH)4 precipitation and alga cells and enhanced oxidative stress might play important roles in the toxicity of Th. To our knowledge, this is the first report of the toxicity of Th to algae with its chemical species in the exposure medium. This finding provides useful information on understanding the fate and toxicity of Th in the aquatic environment.

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Section: Resultssupporting

confidence: 94%

Influence of Speciation of Thorium on Toxic Effects to Green Algae Chlorella pyrenoidosa

Peng

Ding

et al. 2017

IJMS

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“…The growth inhibition increased with the increasing of exposure time. This result was consistent with other previous reports, in which the toxicity of lead [21], cadmium [22] and chlorine [23] to algae was related to the incubation time. After 96 h exposure, the inhibition rates relative to the control group of 7.2, 10.8, and 14.4 μM Th were 22.5, 55.1, and 67.8%, respectively.…”

Section: Chemical Species Of Th In the Mediasupporting

confidence: 94%

Influence of Speciation of Thorium on Toxic Effects to Green Algae <em>Chlorella pyrenoidosa</em>

Peng

Ding

et al. 2017

Preprint

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Thorium (Th) is a natural radioactive element present in the environment and has a potential to be used as a nuclear fuel. Relatively little is known about the influence and toxicity of Th in the environment. In the present study, the toxicity of Th to the green algae Chlorella pyrenoidosa (C. Pyrenoidosa) was evaluated by algal growth inhibition, biochemical assays and morphologic observations. In the cultural medium (OECD TG 201), Th(NO3)4 was transformed to amorphous precipitation of Th(OH)4 due to hydrolysis. Th was toxic to C. Pyrenoidosa, with a 96 h half maximum effective concentration (EC50) of 10.4 μM. Scanning electron microscopy shows that Th-containing aggregates were attached onto the surface of the algal cells, and transmission electron microscopy indicates the internalization of nano-sized Th precipitates and ultrastructural alterations of the algal cells. The heteroagglomeration between Th(OH)4 precipitation and alga cells and enhanced oxidative stress might play important roles in the toxicity of Th. To our knowledge, this is the first report of the toxicity of Th to algae with its chemical species in the exposure medium. This finding provides useful information on understanding the fate and toxicity of Th in the aquatic environment.

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“…Hence, 1 μM EBL was chosen in this experiment. The response of Pb action on A. obliquus cultures was presented in Piotrowska-Niczyporuk et al (2015. Thus, Pb at the concentrations of 0.01 and 500 μM was used.…”

Section: Algal Cultivationmentioning

confidence: 99%

“…Moreover, previous studies confirmed the toxic effect of Pb ions on the unicellular green alga. Heavy metal application caused the inhibition of growth and development of A. obliquus, as well as initiation of oxidative stress (Piotrowska-Niczyporuk et al 2015). Therefore, the role of EBL in the adaptation of A. obliquus to Pb stress was the main aim of this study.…”

Section: Introductionmentioning

confidence: 99%

“…Metal ions bond strongly with ligands to form the structure of the cell wall (Wang and Chen 2009;Javanbakht et al 2013;Rajewska et al 2016). Studies carried out on Chlorella vulgaris, Chlorella kesslerii, Scenedesmus quadricauda, Scenedesmus incrassatules, and A. obliquus proved that green algae effectively remove metals from aquatic ecosystems (Gin et al 2002;Tripathi et al 2006;Wilde et al 2006;Bajguz 2010;Lourie et al 2010;Bajguz 2011;Piotrowska-Niczyporuk et al 2015.…”

Section: Introductionmentioning

confidence: 99%

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24-Epibrassinolide modulates primary metabolites, antioxidants, and phytochelatins in Acutodesmus obliquus exposed to lead stress

Talarek-Karwel

Bajguz

Piotrowska‐Niczyporuk

2019

J Appl Phycol

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Aquatic organisms are exposed to many stressors, e.g., heavy metals. Brassinosteroids, a plant hormone group, can effectively stimulate plants to defend against the negative impact of a heavy metal. The present study was conducted with an aim to find out the influence of 24-epibrassinolide (EBL) on Acutodesmus obliquus treated with 0.01 and 500 μM of lead (Pb) ions during 7 days of cultivation. Pb has a toxic effect on algal cultures because it limits both the growth and development and induces oxidative stress. Simultaneously, 1 μM EBL was involved in protecting algal cells against the toxic effect of Pb. Despite the presence of Pb, EBL significantly increased the number of algal cells and their metabolite content (e.g., proteins, monosaccharides, chlorophylls, carotenes, and xanthophylls). Cultures treated concurrently with EBL and Pb were characterized by a reduction in their content of endogenous Pb, H 2 O 2 , and malondialdehyde. Also, EBL increased the activity of catalase, ascorbate peroxidase, superoxide dismutase, glutathione reductase, and the content of ascorbate and glutathione. EBL increased the phytochelatin synthase activity, thereby enhancing the production of phytochelatins accountable for both binding and detoxification of Pb. These results indicate the influence of EBL on the inhibitory effect of Pb in A. obliquus. These findings help to clarify the role of BRs in the algal adaptation to the prevailing stressful conditions.

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The effect of lead on the growth, content of primary metabolites, and antioxidant response of green alga Acutodesmus obliquus (Chlorophyceae)

Cited by 69 publications

References 54 publications

Influence of Speciation of Thorium on Toxic Effects to Green Algae Chlorella pyrenoidosa

Influence of Speciation of Thorium on Toxic Effects to Green Algae Chlorella pyrenoidosa

Influence of Speciation of Thorium on Toxic Effects to Green Algae <em>Chlorella pyrenoidosa</em>

24-Epibrassinolide modulates primary metabolites, antioxidants, and phytochelatins in Acutodesmus obliquus exposed to lead stress

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