Full TGIF Record # 52748
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Web URL(s):http://www.tandfonline.com/doi/abs/10.1080/03601239509372954
    Last checked: 01/29/2018
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Publication Type:
i
Report
Author(s):Yang, X.; Baligar, V. C.; Martens, D. C.; Clark, R. B.
Author Affiliation:Yang, Baligar & Clark: USDA-ARS, Beckley, WV 25802-0867, USA. Yang & Martens: Department of Crop and Soil Environmental Science, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061-0404, USA
Title:Influx, transport, and accumulation of cadmium in plant species grown at different Cd₂₊ activities
Source:Journal of Environmental Science and Health: Part B: Pesticides, Food Contaminants, and Agricultural Wastes. Vol. B30, No. 4, July 1995, p. 569-583.
# of Pages:15
Publishing Information:New York: Marcel Dekker
Keywords:TIC Keywords: Cadmium; Growth rate; Resistance; Soil contamination; Toxicity; Transport (chemical)
Abstract/Contents:"Cadmium (Cd) has no known essential biological function, but it is toxic to plants, animals, and humans. A promising approach to prevent Cd from entering the food chain would be to select and/or create Cd-accumulating plants to remediate contaminated soils or to develop Cd-excluding plants to reduce Cd flow from soils into foods. The present study was undertaken to examine the differences in Cd influx, transport, and accumulation among five plant species in relation to plant tolerance to Cd toxicity. Ryegrass (Lolium perenne L.) had the least reduction in dry matter which may be due to its lowest Cd transport rate (TR) to shoots at all Cd levels among the plant species tested. White-clover (Trifolium repens L.) was the most sensitive species to Cd toxicity, likely because of its highest Cd influx rate (IR) and high TR when plants were grown at low Cd₂₊ activity (≤8 μM). The high tolerance of cabbage (Brassica oleracea var. capitata L.) to moderate Cd toxicity (≤14 μM) appeared to be mainly due to the detoxification of Cd inside plant tissue since it recorded the highest TR and relatively high IR for Cd among the tested species. At Cd₂₊ activities up to 28 μM, the Cd uptake ratios of shoot/root for ryegrass were, on average, about 50-fold and 27-fold lower than that for cabbage and maize (Zea mays L.), respectively. These results showed that Cd could be easily transported into shoots of cabbage and maize, but was mainly confined to roots of ryegrass. We suggest that influx and transport rates, especially transport rate, could be used as plant physiological parameters for screening Cd-excluding genotypes among monocotyledonous plants."
Language:English
References:25
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Yang, X., V. C. Baligar, D. C. Martens, and R. B. Clark. 1995. Influx, transport, and accumulation of cadmium in plant species grown at different Cd₂₊ activities. J. Environ. Sci. Health. B30(4):p. 569-583.
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Web URL(s):
http://www.tandfonline.com/doi/abs/10.1080/03601239509372954
    Last checked: 01/29/2018
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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