ORIGINAL RESEARCH
Effect of Soil Contamination on Biological Activities of Plant Species Growing in Peripheral Industrial Areas in Southeastern Tunisia
Ali Ferchichi 2  
,  
Emna Ammar 3  
 
 
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1
Arid Regions Institute, Tunisia, Medenine, Tunisia
2
National Agronomic Institute of Tunis, Tunis, Tunisia
3
RU Costal and Urban Environments, National Engineering School of Sfax, University of Sfax, Sfax, Tunisia
CORRESPONDING AUTHOR
Ines Terwayet Bayouli   

Laboratory of Dry farming and Oases, Arid Regions Institute, 22.5 Km Road aljorf, 4119, Medenine, Tunisia
Online publication date: 2020-01-28
Publication date: 2020-02-13
Submission date: 2018-10-11
Final revision date: 2019-01-10
Acceptance date: 2019-01-12
 
Pol. J. Environ. Stud. 2020;29(2):1545–1555
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ABSTRACT
In recent decades industrial encroachment has affected many ecosystems including air, water and vegetation. Many plant species have revealed a strong capacity to survive in neighbourhoods of contaminated soil. Despite this, previous studies have emphasized the response of vegetation to heavy metals contamination, but none have examined those related to a cement plant’s industrial effect. This study was conducted in Gabes cement plant peripheries in southeastern Tunisia, where Lygeum spartum, Gymnocarpos decander, Atractylis serratuloides and Stipa retorta were found to grow abundantly. The aim of this work is to assess the physiological response of these species that was carried out along four sites: S1, (1 km), S2 (3 km), S3 (6 km) and the control site SC (12 km) to evaluate their tolerance to heavy metals and to select the most appropriate species for a phytoremediation attempt. Significant variation (p<0.05) was evidenced between sites in Mg2+ content, CAT, POD, GST, APX activities, proline and water content. Understanding the effect of heavy metals contamination on the physiological response was carried out through a correlations test. A strong positive correlation was marked between enzymatic activities and heavy metals as well as minerals. An increase of heavy metals content in plants was correlated by calcium content, which was followed by rising POD, APX and GST activities. Lygeum spartum enzymatic response was unaffected between sites with a slight decrease in the control site except for the APX activity reflecting a better adaptation and tolerance to contaminated conditions where the accumulation of heavy metals were revealed to be higher than in other plants.
eISSN:2083-5906
ISSN:1230-1485