Morphological, physiological and molecular responses of Nitzschia palea under cadmium stress

The impact of cadmium on the diatom Nitzschia palea (Kützing) W. Smith 1856 was studied by examining the relation between valve deformities and response through biological processes and genetic expression. Cultures of N. palea were exposed to two Cd treatments (C1 = 2.4 ± 0.6 and C2 = 42.6 ± 4.2 µg ...

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Veröffentlicht in:Ecotoxicology (London, England). - 1992. - 27(2018), 6 vom: 25. Aug., Seite 675-688
1. Verfasser: Kim Tiam, Sandra (VerfasserIn)
Weitere Verfasser: Lavoie, Isabelle, Doose, Caroline, Hamilton, Paul B, Fortin, Claude
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2018
Zugriff auf das übergeordnete Werk:Ecotoxicology (London, England)
Schlagworte:Journal Article Bioaccumulation Cadmium Diatoms Gene expression Teratologies qPCR Algal Proteins Water Pollutants, Chemical 00BH33GNGH
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520 |a The impact of cadmium on the diatom Nitzschia palea (Kützing) W. Smith 1856 was studied by examining the relation between valve deformities and response through biological processes and genetic expression. Cultures of N. palea were exposed to two Cd treatments (C1 = 2.4 ± 0.6 and C2 = 42.6 ± 4.2 µg Cd/L) along with a control (C0 = 0 µg Cd/L) for 28 days. Cadmium bioaccumulation, diatoms growth, photosynthetic efficiencies, valve deformities and genetic expression were investigated during the course of the experiment. Cadmium exposure had significant effects on bioaccumulation, growth, valve deformities and genetic expression. Maximal effects for all studied endpoints were recorded after 7 days of exposure for the C2 treatment, which corresponded to the sampling time and condition with maximum cadmium bioaccumulation. Abnormal raphe formations (deviation from its lateral position) were significantly more abundant in the C2 treatment compared to the control. Molecular responses were related to cadmium level based on the number of genes impacted, intensity of the response and the frequency of observations. The expression of genes involved in the regulation of mitochondrial metabolism, photosynthesis, oxidative stress and silica metabolism was affected by cadmium exposure 
650 4 |a Journal Article 
650 4 |a Bioaccumulation 
650 4 |a Cadmium 
650 4 |a Diatoms 
650 4 |a Gene expression 
650 4 |a Teratologies 
650 4 |a qPCR 
650 7 |a Algal Proteins  |2 NLM 
650 7 |a Water Pollutants, Chemical  |2 NLM 
650 7 |a Cadmium  |2 NLM 
650 7 |a 00BH33GNGH  |2 NLM 
700 1 |a Lavoie, Isabelle  |e verfasserin  |4 aut 
700 1 |a Doose, Caroline  |e verfasserin  |4 aut 
700 1 |a Hamilton, Paul B  |e verfasserin  |4 aut 
700 1 |a Fortin, Claude  |e verfasserin  |4 aut 
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