Agricultural and Biosystems Engineering Publications
Campus Units
Agricultural and Biosystems Engineering, Civil, Construction and Environmental Engineering, Food Science and Human Nutrition, Toxicology
Document Type
Article
Publication Version
Published Version
Publication Date
2-5-2019
Journal or Book Title
International Journal of Environmental Research and Public Health
Volume
16
Issue
3
First Page
468
Research Focus Area(s)
Land and Water Resources Engineering
DOI
10.3390/ijerph16030468
Abstract
In this research, we explore for the first time the use of leaf stomatal conductance (gs) for phytotoxicity assessment. Plants respond to stress by regulating transpiration. Transpiration can be correlated with stomatal conductance when the water vapor pressure gradient for transpiration is constant. Thus, our working hypothesis was that the gs measurement could be a useful indicator of the effect of toxic compounds on plants. This lab-scale study aimed to test the measurement of gs as a phytotoxicity indicator. Our model plants were two common hydrophytes used in zero-effluent constructed wetlands for treating landfill leachate. The toxic influence of two types of leachate from old landfills (L1, L2) on common reed (Phragmites australis (Cav.) Trin. ex Steud.) and sweet flag (Acorus calamus L.) was tested. The gs measurements correlated well with plant response to treatments with six solutions (0 to 100%) of landfill leachate. Sweet flag showed higher tolerance to leachate solutions compared to common reed. The estimated lowest effective concentration (LOEC) causing the toxic effect values for these leachates were 3.94% of L1 and 5.76% of L2 in the case of reed, and 8.51% of L1 and 10.44% of L2 in the case of sweet flag. Leachate L1 was more toxic than L2. The leaf stomatal conductance measurement can be conducted in vivo and in the field. The proposed approach provides a useful parameter for indicating plant responses to the presence of toxic factors in the environment.
Access
Open
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Copyright Owner
The Authors
Copyright Date
2019
Language
en
File Format
application/pdf
Recommended Citation
Białowiec, Andrzej; Koziel, Jacek A.; and Manczarski, Piotr, "Stomatal Conductance Measurement for Toxicity Assessment in Zero-Effluent Constructed Wetlands: Effects of Landfill Leachate on Hydrophytes" (2019). Agricultural and Biosystems Engineering Publications. 999.
https://lib.dr.iastate.edu/abe_eng_pubs/999
Included in
Bioresource and Agricultural Engineering Commons, Environmental Indicators and Impact Assessment Commons, Environmental Monitoring Commons
Comments
This article is published as Białowiec, Andrzej, Jacek A. Koziel, and Piotr Manczarski. "Stomatal Conductance Measurement for Toxicity Assessment in Zero-Effluent Constructed Wetlands: Effects of Landfill Leachate on Hydrophytes." International Journal of Environmental Research and Public Health 16, no. 3 (2019): 468. DOI: 10.3390/ijerph16030468. Posted with permission.