American bur-reed (Sparganium americanum Nutt.), a common aquatic plant in the middle and eastern United States and Canada, is often located in water-retaining drainage areas. The purpose of this study was to determine the leaf composition of S. americanum, paying attention to the cuticular waxes and the epidermis, and its ability to sorb pesticides. S. americanum leaves (n = 100) were collected in both early (June) and late (August) summer. Transverse sections of S. americanum were stained and studied with brightfield and fluorescence microscopy to estimate the structural and chemical nature of the leaf tissues cross sections. Mean total lipid content in early summer leaf samples (1.47 ± 0.83 mg mL−1) was significantly greater (alpha 0.05) than late summer leaves (0.15 ± 0.36 mg mL−1). In vitro analysis of epidermal peel permeability exposed to atrazine and malathion determined little to no sorption by the plant. Therefore, the structure of S. americanum leaves suggest this species does not have the capacity of sorbing these pesticides from runoff water.
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Thanks to Renee Russell for pesticide analyses. Mention of trade names and commercial products in this article are solely for providing specific information and do not imply recommendation or endorsement by the US Department of Agriculture (USDA). USDA is an equal opportunity employer and provider.
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Alsharekh, A., Swatzell, L.J. & Moore, M.T. Leaf Composition of American Bur-Reed (Sparganium americanum Nutt.) to Determine Pesticide Mitigation Capability. Bull Environ Contam Toxicol 100, 576–580 (2018). https://doi.org/10.1007/s00128-018-2298-4
- Epidermal peel permeability