Effects of Ten Antibiotics on Seed Germination and Root Elongation in Three Plant Species

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Effects of Ten Antibiotics on Seed Germination and Root Elongation in Three Plant Species

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dc.contributor.author Hills, Derek G.
dc.contributor.author Fletcher, James
dc.contributor.author Solomon, Keith R.
dc.contributor.author Sibley, Paul K.
dc.date.accessioned 2011-09-01T23:11:57Z
dc.date.available 2011-09-01T23:11:57Z
dc.date.issued 2011-02
dc.identifier.citation Hills, D. G., Fletcher, J., Solomon, K. R., and Sibley, P. K. "Effects of Ten Antibiotics on Seed Germination and Root Elongation in Three Plant Species." Archives of Environmental Contamination and Toxicology 60.2 (2011): 620-632
dc.identifier.issn 0090-4341
dc.identifier.uri http://hdl.handle.net/10214/2937
dc.description.abstract We applied a screening-level phytotoxicity assay to evaluate the effects of 10 antibiotics (at concentrations ranging from 1 to 10,000 μg/L) on germination and early plant growth using three plant species: lettuce (Lactuca sativa), alfalfa (Medicago sativa), and carrot (Daucus carota). The range of phytotoxicity of the antibiotics was large, with EC25s ranging from 3.9 μg/L to >10,000 μg/L. Chlortetracycline, levofloxacin, and sulfamethoxazole were the most phytotoxic antibiotics. D. carota was the most sensitive plant species, often by an order of magnitude or more, followed by L. sativa and then M. sativa. Plant germination was insensitive to the antibiotics, with no significant decreases up to the highest treatment concentration of 10,000 μg/L. Compared with shoot and total length measurements, root elongation was consistently the most sensitive end point. Overall, there were few instances where measured soil concentrations, if available in the publicly accessible literature, would be expected to exceed the effect concentrations of the antibiotics evaluated in this study. The use of screening assays as part of a tiered approach for evaluating environmental impacts of antibiotics can provide insight into relative species sensitivity and serve as a basis by which to screen the potential for toxic effects of novel compounds to plants.
dc.language.iso en en_US
dc.publisher Archives of Environmental Contamination and Toxicology en_US
dc.subject phytotoxicity en_US
dc.subject germination en_US
dc.subject antibiotics en_US
dc.subject early plant growth en_US
dc.subject lettuce en_US
dc.subject alfalfa en_US
dc.subject carrot en_US
dc.title Effects of Ten Antibiotics on Seed Germination and Root Elongation in Three Plant Species en_US
dc.type Article en_US


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