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Int. J. Environ. Res. Public Health 2016, 13(7), 742; doi:10.3390/ijerph13070742

DNA Damage in Euonymus japonicus Leaf Cells Caused by Roadside Pollution in Beijing

1
School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
2
School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
3
Brook Byers Institute for Sustainable Systems, Georgia Institute of Technology, 828 West Peachtree St., Suite 320B, Atlanta, GA 30332, USA
*
Author to whom correspondence should be addressed.
Academic Editor: William A. Toscano
Received: 3 March 2016 / Revised: 12 June 2016 / Accepted: 24 June 2016 / Published: 22 July 2016
View Full-Text   |   Download PDF [1866 KB, uploaded 22 July 2016]   |  

Abstract

The inhalable particles from vehicle exhaust can cause DNA damage to exposed organisms. Research on DNA damage is primarily focused on the influence of specific pollutants on certain species or the effect of environmental pollution on human beings. To date, little research has quantitatively studied the relationship between roadside pollution and DNA damage. Based on an investigation of the roadside pollution in Beijing, Euonymus japonicus leaves of differing ages grown in heavily-polluted sections were chosen as biomonitors to detect DNA damage using the comet assay technique. The percentage of DNA in the tail and tail moment was chosen as the analysis index based on SPSS data analysis. The roadside samples showed significantly higher levels of DNA damage than non-roadside samples, which increased in older leaves, and the DNA damage to Euonymus japonicus leaf cells was positively correlated with haze-aggravated roadside pollution. The correlation between damage and the Air Quality Index (AQI) are 0.921 (one-year-old leaves), 0.894 (two-year-old leaves), and 0.878 (three-year-old leaves). Over time, the connection between DNA damage and AQI weakened, with the sensitivity coefficient for δyear 1 being larger than δyear 2 and δyear 3. These findings support the suitability and sensitivity of the comet assay for surveying plants for an estimation of DNA damage induced by environmental genotoxic agents. This study might be applied as a preliminary quantitative method for Chinese urban air pollution damage assessment caused by environmental stress. View Full-Text
Keywords: comet assay; percentage of DNA in the tail; tail moment; air pollution comet assay; percentage of DNA in the tail; tail moment; air pollution
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Li, T.; Zhang, M.; Gu, K.; Herman, U.; Crittenden, J.; Lu, Z. DNA Damage in Euonymus japonicus Leaf Cells Caused by Roadside Pollution in Beijing. Int. J. Environ. Res. Public Health 2016, 13, 742.

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