RRC ID 29668
著者 Khan SM, Yoshimura C, Arikawa M, Omura G, Nishiyama S, Suetomo Y, Kakuta S, Suzaki T.
タイトル Axopodial degradation in the heliozoon Raphidiophrys contractilis: a novel bioassay system for detecting heavy metal toxicity in an aquatic environment.
ジャーナル Environ Sci
Abstract We observed the physiological effects of zinc, lead, mercury, copper, cadmium, and arsenic on the axopodia of the centrohelid heliozoon Raphidiophrys contractilis. In the presence of these heavy metal ions, the axopodial length of the heliozoon decreased in a concentration-dependent manner. When the heavy metal ions were examined at the same concentration, mercury produced the strongest effect on axopodia. At a high concentration (> 10-3 M) of any of the heavy metal ions examined, axopodia disappeared and cells became disrupted. Axopodia were also degraded by the addition of solutions with an acidic (< or = 6) or basic (> or = 8) pH. These observations indicate the toxic effects of heavy metal ions and non-neutral pHs on axopodial length, and also signify that R. contractilis can be used as an effective biological tool for the study of metal poisoning in eukaryotic cells.
巻・号 13(4)
ページ 193-200
公開日 2006-1-1
PMID 17095991
MeSH Animals Biological Assay / methods* Eukaryota / drug effects* Metals, Heavy / analysis* Metals, Heavy / toxicity* Pseudopodia / drug effects* Toxicity Tests / methods Water / chemistry* Water Pollutants, Chemical / analysis* Water Pollutants, Chemical / toxicity Water Pollution, Chemical / adverse effects Water Pollution, Chemical / analysis
リソース情報
藻類 NIES-2498