Assessment of Arsenite, Arsenate, and Chromate Phytotoxicity Based on the Activity of Seed Germination and Growth (Root & Shoot) of Various Plant Seeds

Title
Assessment of Arsenite, Arsenate, and Chromate Phytotoxicity Based on the Activity of Seed Germination and Growth (Root & Shoot) of Various Plant Seeds
Author(s)
공인철고경석[고경석]한재복
Keywords
RISK-ASSESSMENT; TOXICITY; SEEDLINGS; CADMIUM; WHEAT; TESTS; SOILS; ASSAY; METAL
Issue Date
201305
Publisher
TAYLOR & FRANCIS INC
Citation
HUMAN AND ECOLOGICAL RISK ASSESSMENT, v.19, no.3, pp.742 - 753
Abstract
Effects of different concentrations of arsenite, arsenate, and chromate on seed germination, root length (RL), and shoot length (SL) in four seed types, chosen from preliminary tests with eight seed types, were investigated to assess the toxicity of the tested metals. The sensitivities of the four different seed types toward germination, relative RL (RRL), and relative SL (RSL) varied with each metal. In a comparison, the germination of the seeds was more sensitive to the tested metals than the other chosen endpoints (RL and SL). Arsenite was generally more restrictive to all the endpoints (germination, root, and shoot growth) than arsenate and chromate. Lactuca (garden lettuce) was also generally more sensitive to the tested metals than the other seed types. The correlation between RRL and RSL varied depending on the seed type and metal tested. However, significant correlations (r2 > 0.85) of these were observed with Lactuca seeds, which appeared to be an optimal plant with respect to the tolerance of the tested metals. The differences in the toxicities of metals toward different plant species should be taken into account in the bioassessment of metals-contaminated sites. Thus, this study encourages the need to combine the three endpoints of various seeds in the evaluation of toxicities of metals.
URI
http://hdl.handle.net/YU.REPOSITORY/25874http://dx.doi.org/10.1080/10807039.2012.708273
ISSN
1080-7039
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공과대학 > 환경공학과 > Articles
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