EVALUATING THE ESSENTIAL AND NON-ESSENTIAL METAL REMEDIATION EFFICIENCY OF Chlorella vulgaris, AND PHOTOSYNTHETIC GENE EXPRESSION LEVEL CHANGES DURING THE PROCESS
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Date
2019
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Abstract
Algal populations hold great potential for encountering water pollution problem due to their remediation abilities. Thus, using them for removing the pollutants stands as a powerful approach.However, it is crucial to investigate the negative effects of these pollutants on algal populations aswell as understanding the removal capacity of these populations in order to benefit their abilities.In the present study, Chlorella vulgaris was used as a candidate for metal removal. Besides theremediation capacity for certain essential (Cu2+, Zn2+, Co2+, Mn2+, Mo6+) and non-essential (Cd2+,Pb2+, Sn4+, Ba2+, As5+) metals, chlorophyll and carbohydrate contents, and photosynthetic gene(psaB, Photosystem I reaction center protein subunit B) expression levels were also evaluated.Results indicated that remediation efficiency of C. vulgaris for essential metals wasCu>Co>Zn>Mo>Mn and for non-essential metals was Sn>Pb>Ba>Cd>As, respectively. It wasalso observed that psaB expression was increased after the essential and non-essential metal treatment. It can be concluded that C. vulgaris can be used as a bioindicator for Mn and As while it isalso suitable to be used for metal removal.