Toxicity of copper, lead, and cadmium on the motility of two marine microalgae Isochrysis galbana and Tetraselmis chui

Liu, Guangxu; Chai, Xueliang; Shao, Yanqing; Hu, Lihua; Xie, Qian; Wu, Hongxi

doi:10.1016/s1001-0742(10)60410-x

Cited by 64 publications

(30 citation statements)

References 30 publications

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“…As for threshold effect parameter, we calculated additional EC 5 , EC 10 and EC 20 values, which represented the initial concentration of the test chemical that affected the dinoflagellates ( . On the other hand, C. polykrikoides was less tolerant to Cu compared those of the green algae Isochrysis galbana and Tetraselmis chui (Liu et al 2011), of which the half maximal inhibitory concentration (IC 50 ) values were 31.4 and 37.8 mg L -1 , respectively.…”

Section: Bioavailability Of Tested Chemicalsmentioning

confidence: 98%

Evaluation of the sub-lethal toxicity of Cu, Pb, bisphenol A and polychlorinated biphenyl to the marine dinoflagellate Cochlodinium polykrikoides

Ebenezer¹,

2012

ALGAE

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Algae are sensitive to a wide range of pollutants, and are effective bioindicators in ecotoxicity assessments. Here, we evaluated the sub-lethal sensitivity of the marine dinoflagellate Cochlodinium polykrikoides upon exposure to copper (Cu), lead (Pb), bisphenol A (BPA), and Aroclor 1016 (polychlorinated biphenyl, PCB). Toxic effects were assessed by observations of the reduction in cell counts and chlorophyll a levels after exposure to each toxicant. C. polykrikoides displayed dose-dependent, sigmoidal responses when exposed to the tested chemicals. EC 50 -72 h values for Cu, Pb, BPA, and PCB were 12.74, 46.70, 68.15, and 1.07 mg L -1 , respectively. PCB, which is an endocrine-disrupting chemical, was the most sensitive, proving its toxic effect on the dinoflagellate. This study provides baseline data on the toxic effects of commonly used heavy metals and endocrine-disrupting chemicals to a marine dinoflagellate.

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Section: Bioavailability Of Tested Chemicalsmentioning

confidence: 98%

Evaluation of the sub-lethal toxicity of Cu, Pb, bisphenol A and polychlorinated biphenyl to the marine dinoflagellate Cochlodinium polykrikoides

Ebenezer¹,

2012

ALGAE

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show abstract

“…These tests are always done using laboratory culturing, poison stimulation, and detection of additional physiological traits. Along with growth, metabolism, and photosynthesis, motility is a key behavioral characteristic of motile microalgae and has been proved to be an efficient indicator for toxicology bioassays [6][7][8]. Although effective, these tests can be labor-intensive, Electronic supplementary material The online version of this article (doi:10.1007/s00216-012-6408-6) contains supplementary material, which is available to authorized users.…”

Section: Introductionmentioning

confidence: 99%

Microalgal motility measurement microfluidic chip for toxicity assessment of heavy metals

2012

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A polydimethylsiloxane microfluidic chip has been developed for the estimation of toxic heavy metals based on measurement of mobility of marine microalgae. The chip is mainly composed of an upstream concentration gradient generator and a downstream perfusion-based chemotatic module. The processes of toxic liquid dilution and diffusion, microalgal culturing, cell stimulation, and online screening can be integrated in this chip, which makes it an attractive approach to simplify toxicity testing procedures. The microalgal motility was adopted as a microfluidic bioassay signal and was evaluated as the percentage of motile cells, curvilinear velocity, average path velocity, and straight line velocity. Two mobile marine microalgae, Platymonas subcordiformis and Platymonas helgolandica var. tsingtaoensis, were confined in the chemotatic module and stimulated by the eight concentration gradients of Cu and Cd generated by the concentration gradient generator. In all cases, a toxic response was detected (i.e., a dose-related inhibition of motility was observed). Only 1.5 h was needed to predict EC 50 values. Thus, the microfluidic chip developed was proved to be useful as a simple and rapid approach in heavy metal detection and might be expanded as a conventional test method in environmental toxicity assessment.

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“…Based on this information, Cu 7 times power full to inhibit growth of phytoplankton than Cd. Water parameters measurement was used to ensure the [26] reported. Yap et al [16] reported IC 50 -5 d of I. galbana was 740 g/L and I. galbana have capability to accumulate Cd due to induction of heavy metal sequestration peptides (phytochelatin) and detoxifying metals in vegetal cells.…”

Section: And Cu Toxicity Testmentioning

confidence: 99%

Copper and Cadmium Toxicity to Marine Phytoplankton, <i>Chaetoceros gracilis</i> and <i>Isochrysis</i> sp.

et al. 2015

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Toxicity of copper, lead, and cadmium on the motility of two marine microalgae Isochrysis galbana and Tetraselmis chui

Cited by 64 publications

References 30 publications

Evaluation of the sub-lethal toxicity of Cu, Pb, bisphenol A and polychlorinated biphenyl to the marine dinoflagellate Cochlodinium polykrikoides

Evaluation of the sub-lethal toxicity of Cu, Pb, bisphenol A and polychlorinated biphenyl to the marine dinoflagellate Cochlodinium polykrikoides

Microalgal motility measurement microfluidic chip for toxicity assessment of heavy metals

Copper and Cadmium Toxicity to Marine Phytoplankton, <i>Chaetoceros gracilis</i> and <i>Isochrysis</i> sp.

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