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:: Volume 8, Issue 2 (11-2019) ::
2019, 8(2): 143-153 Back to browse issues page
The impact of Zn and Cd heavy metals on the growth and some physiological characteristics of spinach
Lamia Vojodi Mehrabani * , Rana Valizadeh- kamran , Homa Mirzaiee
Department of Agronomy and Plant Breeding, Azarbaijan Shahid Madani University, Tabriz, Iran , vojodilamia@gmail.com
Abstract:   (5058 Views)
High concentrations of heavy metals disrupt the metabolic processes of plant growth and even cause plant death. Plants show different tolerance thresholds to heavy metals, therefore, the effect of different concentrations of heavy metals zinc (Zn) and cadmium (Cd) (zero, 2 and 4 mgL-1) in two varieties of spinach (common seed and Thorny seeds) on some morphological, physiological traits and content of the elements were examined in the factorial experiment based on a completely randomized design with three replications. The results showed that some morphological traits of the plant are affected by metals and cultivar type independently, so that the lowest wet weight of leaves and plant height was observed in four mgL-1 of Cd treatment and the highest amount of these two traits was observed in two mgL-1 of Zn. The highest dry weight of the plant was recorded in the thorny cultivar and the highest plant height was recorded in the normal seed cultivar. The interaction of the type of cultivar and heavy metals was significant in some physiological traits such as soluble solids content, catalase content, and superoxide dismutase. The highest activity of catalase enzyme was observed in the treatment of 2 mgL-1 of Cd in normal seeds and the highest amount of superoxide dismutase was observed in the treatment of 4 mgL-1 of Zn and 2 mgL-1 of Cd in normal seeds. Zinc metal up to 2 mgL-1 increased the growth and development of spinach, but more than this amount, like cadmium metal, reduced yield and increased the amount of antioxidant enzymes. All content of the measured elements showed a significant interaction. As the cadmium increased, the plant's uptake of the Ca, K, Zn, Mn and Mg decreased, so that the lowest amount of all the elements measured in four mgL-1 of Cd was observed in thorny seeds. The results of determining the biological concentration in this experiment showed that the cadmium content of thorny and common spinach leaves varied between 145 and 167 mgKg-1 and spinach could be a good representative for use in cadmium phytoremediation.
Keywords: enzyme activity, heavy metal, physiological characteristics, Spinacia oleracea.
Full-Text [PDF 714 kb]   (1177 Downloads)    
Type of Study: Research | Subject: Biosafety
Received: 2019/08/1 | Accepted: 2019/12/6 | Published: 2020/02/3
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Vojodi Mehrabani L, Valizadeh- kamran R, Mirzaiee H. The impact of Zn and Cd heavy metals on the growth and some physiological characteristics of spinach. Genetic Engineering and Biosafety Journal 2019; 8 (2) :143-153
URL: http://gebsj.ir/article-1-304-en.html


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Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 8, Issue 2 (11-2019) Back to browse issues page
دوفصل نامه علمی-پژوهشی مهندسی ژنتیک و ایمنی زیستی Genetic Engineering and Biosafety Journal
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