Effects of seven organic pollutants on soil nematode Caenorhabditis elegans

SOCHOVÁ, Ivana, Jakub HOFMAN and Ivan HOLOUBEK. Effects of seven organic pollutants on soil nematode Caenorhabditis elegans. Environment International. 2007, vol. 6, No 33, p. 798-804. ISSN 0160-4120.

Basic information

• Original name: Effects of seven organic pollutants on soil nematode Caenorhabditis elegans
• Name in Czech: Vliv 7 organických polutantů na půdní roupici Caenorhabditis elegans
• Authors: SOCHOVÁ, Ivana (203 Czech Republic), Jakub HOFMAN (203 Czech Republic, guarantor) and Ivan HOLOUBEK (203 Czech Republic).
• Edition: Environment International, 2007, 0160-4120.

Other information

• Original language: English
• Type of outcome: Article in a journal
• Field of Study: 10511 Environmental sciences
• Country of publisher: Czech Republic
• Confidentiality degree: is not subject to a state or trade secret
• Impact factor: Impact factor: 2.797
• RIV identification code: RIV/00216224:14310/07:00020847
• Organization unit: Faculty of Science
• UT WoS: 000248273700011
• Keywords in English: soil; nematodes; Caenorhabditis elegans; organic pollutants
• Tags: Caenorhabditis elegans, nematodes, organic pollutants, soil
• Tags: International impact, Reviewed

Abstract

Caenorhabditis elegans is a free-living soil nematode that is commonly used as a model for toxicity tests. The aim of this study was to investigate the toxicity of seven organic pollutants: four azaarenes (quinoline, acridine, phenazine, and 1,10-phenanthroline), short-chain chlorinated paraffins, and two organochlorinated pesticides (toxaphene and hexachlorobenzene). The exposure to all chemicals was carried out in three test media (soil, agar, and aquatic medium), and adult mortality was evaluated after 24 and 48 hours. Toxaphene was the most toxic substance with LC50 (48h) of 379 mg/kg in the soil and 0.2 mg/L in the aquatic medium. Quinoline was the most toxic chemical in agar test with LC50 (48h) of 10 mg/L. HCB showed a very low toxicity in all tests, maybe due to its very low water solubility. Longer than 24h test duration was found necessary for getting more correct data on toxicity. In comparison with other studies, C. elegans was less sensitive than other soil invertebrates. Different response might be attributed to different exposure routes and shorter test duration. Equilibrium partitioning theory was used to calculate Koc from results of soil and aquatic tests but this approach was found not working. Our results suggest that the tests with nematode C. elegans should be included to the battery of tests for risk assessment of POPs in soil.

Links

• GP525/04/P159, research and development project: Name: Vliv nově rozpoznávaných prioritních perzistentních organických polutantů (POPs) na organismy v půdním ekosystému

Investor: Czech Science Foundation, Effects of newly recognized priority persistent organic pollutants (POPs) on organisms of soil ecosystem

• MSM0021622412, plan (intention): Name: Interakce mezi chemickými látkami, prostředím a biologickými systémy a jejich důsledky na globální, regionální a lokální úrovni (INCHEMBIOL) (Acronym: INCHEMBIOL)

Investor: Ministry of Education, Youth and Sports of the CR, Interactions among the chemicals, environment and biological systems and their consequences on the global, regional and local scales (INCHEMBIOL)