Full TGIF Record # 110289
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Web URL(s):https://dl.sciencesocieties.org/publications/jeq/articles/30/2/411
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https://dl.sciencesocieties.org/publications/jeq/pdfs/30/2/411
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Publication Type:
i
Refereed
Author(s):Wilson, P. Chris; Whitwell, Ted; Klaine, Stephen J.
Author Affiliation:Wilson: Indian River Research and Education Center, University of Florida, Fort Pierce, Florida; Whitwell: Department of Horticulture, Clemson University, Clemson, South Carolina; Klaine: Department of Environmental Toxicology, Clemson University, Pendleton, South Carolina
Title:Metalaxyl toxicity, uptake, and distribution in several ornamental plant species
Column Name:Bioremediation and biodegredation
Other records with the "Bioremediation and biodegredation" Column
Section:Technical reports
Other records with the "Technical reports" Section
Source:Journal of Environmental Quality. Vol. 30, No. 2, March/April 2001, p. 411-417.
Publishing Information:Madison, Wisconsin: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
# of Pages:7
Keywords:TIC Keywords: Metalaxyl; Toxicity; Uptake; Distribution; Ornamental plants; Fungicides; Fungicide resistance; Application rates; Tissue testing; Necrosis
Abstract/Contents:"Phytoremediation depends on the ability of plants to tolerate and assimilate contaminants. This research characterized the interaction between several ornamental plant species and the fungicidal active ingredient, metalaxyl [N-(2.6-dimethylphenyl)-N-(methoxyacetyl)alanine methyl ester]. Species evaluated included sweetflag (Acorus gramineus Sol. es Aiton), canna (Canna hybrida L. 'Yellow King Humbert'), parrotfeather [Myriophyllum aquaticum (Vell.) Verdc.], and pickerelweed (Pontederia cordata L.). Metalaxyl tolerance levels for each species were determined by exposing plants for 7 d to solutions containing 0, 5, 10, 25, 50, 75, or 100 mg metalaxyl L-1 aqueous nutrient media. Response endpoints included fresh mass production after 7 d exposure and 7 d post-exposure and quantum efficiency using dark-adapted (Fv/Fm) and light-adapted (fluorescence yields) plants. Metalaxyl uptake and distribution within the plant was determined by growing plants in aqueous nutrient media containing 1.18 X 106 Bq L-1 [14C]metalaxyl (0.909 mg L-1) for 1, 3, 5, or 7 d. Plant tissues were combusted and anylyzed by liquid scintillation counting. Metalaxyl had no effects on the endpoints measured, except for fresh mass production of sweetflag at the 75 and 100 mg L-1 treatment levels. However, leaf necrosis was apparant in most species after 5 d exposure to concentrations greater than 25 mg L-1. Metalaxyl removal from the spiked nutrient media ranged from 15 to 60% during the 7-d exposure period. The majority of metalaxyl removed from the solution was detected within individual plants. In nearly all cases, activity from the radiolabeled pesticide accumulated in the leaves. Uptake of metalaxyl was correlated with water uptake throughout the 7 d. These results suggest that all species examined may be good candidates for incorporation into a phytoremediation scheme for metalaxyl."
Language:English
References:22
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Wilson, P. C., T. Whitwell, and S. J. Klaine. 2001. Metalaxyl toxicity, uptake, and distribution in several ornamental plant species. J. Environ. Qual. 30(2):p. 411-417.
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Web URL(s):
https://dl.sciencesocieties.org/publications/jeq/articles/30/2/411
    Last checked: 11/07/2016
    Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/jeq/pdfs/30/2/411
    Last checked: 11/08/2016
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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