Journal Title
Title of Journal: Ecotoxicology
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Abbravation: Ecotoxicology
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Authors: Martijn JTN Timmermans Jacintha Ellers Dick Roelofs Nico M van Straalen
Publish Date: 2005/09/14
Volume: 14, Issue: 7, Pages: 727-739
Abstract
Metal contamination in soil ecosystems is a permanent and often strong selection pressure The present study investigates metal tolerance in 17 Orchesella cincta Collembola populations from metalcontaminated and reference sites and combines analyses at the phenotypic and molecular level Metal tolerance was phenotypically assayed by measuring survival times of laboratory cultures during exposure to cadmium Comparisons of survival curves showed that five out of eight metalstressed populations tested evolved increased cadmium tolerance Stolberg Plombieres Hoboken Hygum and Gusum In addition the role of the metallothionein MT gene in cadmium tolerance of O cincta was studied by means of quantitative RTPCR The constitutive and Cdinduced MT mRNA expression of the laboratory cultures was measured Results show that the mean constitutive MT mRNA expression of populations from polluted sites was significantly higher than of populations from reference sites However no correlation between MT mRNA expression levels after laboratory exposure to cadmium and field cadmium concentrations was observed Furthermore no relation between survival rate during exposure to cadmium and MT mRNA expression was detected Our results suggest that constitutive MT mRNA expression plays a role in early protection against cadmium toxicity and indicate that mechanisms other then MT upregulation are involved in tolerance to prolonged exposure to cadmiumThe authors would like to thank CAM van Gestel for critical advice on earlier versions of the manuscript The authors further would like to thank J Mariën SC Verhoef V JW Janssen EHP Franssen G Bengtsson J ScottFordsmand G Spinsanti F Frati T Skalski HR Koehler SP Hopkin and R Dallinger for assistance and/or guidance in collecting the animals and J Mariën for assistance in the metal analysis
Keywords:
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- Preliminary study of interactivity between mercury and cells labeled with carboxymethyl chitosan coated quantum dots
- Assessment of acetylcholinesterase activity in Clarias gariepinus as a biomarker of organophosphate and carbamate exposure
- Anticoagulant rodenticides in urban bobcats: exposure, risk factors and potential effects based on a 16-year study
- Fluroxypyr triggers oxidative damage by producing superoxide and hydrogen peroxide in rice ( Oryza sativa )
- Sensitivity of animals to chemical compounds links to metabolic rate
- Short- and Long-Term Response of Sunflower to Airborne Bromoxynil-Octanoate Under Controlled and Field Conditions
- Risk assessment of various insecticides used for management of Asian citrus psyllid, Diaphorina citri in Florida citrus, against honey bee, Apis mellifera
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- Differential toxicological effects induced by mercury in gills from three pedigrees of Manila clam Ruditapes philippinarum by NMR-based metabolomics
- Estrogen alters the profile of the transcriptome in river snail Bellamya aeruginosa
- Metal sensitivity of the embryonic development of the ramshorn snail Marisa cornuarietis (Prosobranchia)
- Spatial and interspecific patterns in persistent contaminant loads in bighead and silver carp from the Illinois River
- Acute aquatic toxicity of tire and road wear particles to alga, daphnid, and fish
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- Assessing the acute hazards of zinc oxide nanomaterials to Lumbriculus variegatus
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- Effects of organic pollutants on Eobania vermiculata measured with five biomarkers
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- The role of CYP1A inhibition in the embryotoxic interactions between hypoxia and polycyclic aromatic hydrocarbons (PAHs) and PAH mixtures in zebrafish ( Danio rerio )
- Valve movement response of the freshwater clam Corbicula fluminea following exposure to waterborne arsenic
- Integrated assessment of biomarker responses in caged shrimps ( Litopenaeus vannamei ) exposed to complex contaminants from the Maluan Bay of China
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