Impact of cadmium stress on growth and physiological responses of fenugreek (Trigonella foenum-graecum L.)

Document Type : Research Paper


1 Department of Biology, Faculty of Sciences, Urmia University, Urmia, Iran

2 Department of Biology, Faculty of Science, Bu-Ali Sina University, Hamedan, Iran.


Pollution of the environment by toxic metals creates stress conditions that generally negatively affect plant growth and development. Cadmium is a highly toxic metal that enters the environment mainly through industrial activities and affects crops and other agricultural plants. In the current investigation, the influence of different concentrations of CdCl2 on Cd uptake, growth parameters, and antioxidant responses of Trigonella foenum-graecum L. were investigated. Results showed that H2O2 and malondialdehyde contents were increased by Cd treatments compared to the control plants. Cd stress differently altered the activity of antioxidant enzymes such as catalase, superoxide dismutase, peroxidase, and polyphenol oxidase. The content of antioxidant compounds such as phenols, flavonoids, anthocyanins, soluble proteins, and proline was also increased by the Cd treatment. In addition, our results demonstrated the decrease in seed germination percentage, growth parameters, and chlorophyll and carotenoid contents that may be considered circumstantial evidence for the toxicity of cadmium.


Article Title [Persian]

اثرات تنش کادمیوم بر پاسخ های رشدی و فیزیولوژیکی گیاه شنبلیله (.Trigonella foenum-graecum L)

Authors [Persian]

  • امیرعلی کمالوند 1
  • سیاوش حسینی سرقین 1
  • رویا کرمیان 2
1 گروه زیست شناسی، دانشکده علوم، دانشگاه ارومیه، ارومیه
2 گروه زیست شناسی، دانشکده علوم پایه، دانشگاه بوعلی سینا، همدان.
Abstract [Persian]

آلودگی محیط زیست با فلزات سمی شرایط تنش­ باری را به وجود می ­آورد که اغلب رشد و نمو گیاه را به شکل منفی تحت تاثیر قرار می­ دهد. کادمیوم فلزی بسیار سمی است که اساسا از طریق فعالیت ­های صنعتی وارد محیط زیست می­ شود و بر رشد گیاهان زراعی و سایر گیاهان تاثیر می­ گذارد. در پژوهش حاضر اثر غلظت­ های مختلف CdCl2 بر جذب کادمیوم، پارامترهای رشدی و پاسخ­ های آنتی اکسیدانی گیاه شنبلیله مورد مطالعه قرار گرفت. نتایج نشان داد که محتوای مالون­ دی ­آلدئید و پراکسید هیدروژن در گیاهان تیمار شده با کادمیوم در مقایسه با گیاهان شاهد افزایش یافت. تنش کادمیوم به طرز متفاوتی فعالیت آنزیم ­های آنتی ­اکسیدانی کاتالاز، سوپراکسید دیسموتاز، پراکسیداز و پلی­ فنل­ اکسیداز را تغییر داد. همچنین تیمار کادمیوم محتوای ترکیبات آنتی ­اکسیدانی غیرآنزیمی مانند فنل­ ها، فلاونوئیدها، آنتوسیانین­ ها، پروتئین­ های محلول و پرولین را افزایش داد. علاوه بر این، کاهش درصد جوانه­ زنی بذر و پارامترهای رشدی و نیز کاهش محتوای رنگیزه ­های فتوسنتزی کلروفیل و کاروتنوئید از اثرات سمی کادمیوم بود.

Keywords [Persian]

  • آنتی اکسیدان های غیر آنزیمی
  • آنزیم های آنتی اکسیدانی
  • پرولین
  • ترکیبات فنلی
  • شنبلیله
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