تأثیر نانو سلنیوم و سلنات سدیم بر پارامترهای بیوشیمیایی، فیزیولوژیک و رشدی فلفل دلمه‌ای

نویسندگان

1 گروه زیست شناسی، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران

2 گروه باغبانی، دانشکده کشاورزی، هسته پژوهشی علوم و فناوری نانو و مواد پیشرفته، پژوهشکده هرمز، دانشگاه هرمزگان، بندرعباس، ایران

3 گروه زیست شناسی ، واحد گرمسار، دانشگاه آزاد اسلامی، گرمسار، ایران

چکیده
سلنیوم جزء عناصر غیرضروری برای گیاهان و ضروری برای انسان و جانوران به شمار می‌رود. اگرچه هنوز نقش سلنیوم در گیاهان به‌درستی شناخته نشده است اما نتایج تحقیقات نشان داده که این عنصر در فیزیولوژی و متابولیسم گیاهان مؤثر است. درپژوهش حاضر تأثیر محلول‌پاشی نانو سلنیوم ‌(0، 5، 10 و 20 میلی‌گرم‌ در لیتر) و سلنات سدیم (0، 5، 10 و20 میلی‌گرم ‌در ‌لیتر) بر پاسخ‌های فیزیولوژیکی و بیوشیمیایی گیاه فلفل دلمه‌ای (Capcicum anumm) مورد‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌‌ برررسی قرار گرفت. اثرات تیمارهای اعمال شده بر شاخص های مختلف رشدی و بیوشیمیایی ارزیابی شد. بر اساس نتایج بدست آمده، تیمارهای سلنیوم در غلظت های 10 و 20 میلی‌گرم ‌در ‌لیتر باعث کاهش تجمع بیومس در ریشه و اندام هوایی شد. این تیمارها همچنین موچب افزایش درمحتوای پراکسیدهیدروژن و مالوندی‌آلدئید شد. استفاده از سلنیوم موچب افزایش در میزان فنل، پرولین و تیولها شد. فعالیت آنزیم های آنتی اکسیدان شامل کاتالاز، پراکسیداز، آسکورباتپراکسیداز، پلیفنلاکسیداز و نیز آنزیم پروتئاز در پاسخ به تیمارهای سلنیوم افزایش یافت.





کلیدواژه‌ها


عنوان مقاله English

The effect of nano selenium and sodium selenate on biochemical, physiological, and growth parameters of Bell pepper (Capsicum anumm)

نویسندگان English

shiva tabatabaie roodsati 1
Alireza Iranbakhsh 1
. Mansoureh shamili 2
Zahra Oraghi Ardabili 3
1 Department of Biology, Science and Research Branch, Islamic Azad University, Tehran
2 Horticulture Department, Agriculture Faculty, Nanoscience, Nanotechnology and nanomaterials Research Center, Hormoz Research Center, University of Hormozgan, Bandar Abbas, Iran
3 Department of Biology, Garmsar Branch, Islamic Azad University, Garmsar, Iran
چکیده English

Selenium, a non-essential element for plants, is essential for animals as well as human beings. Although the role of selenium in plants is yet to be properly understood, previous researches have shown that this element can affect plant growth and metabolism. In this study, the effect of foliar application of selenium nanoparticles (0, 5, 10, and 20 mg/L) and sodium selenate (0, 5, 10, and 20 mg/L) on the physiological and biochemical responses of bell pepper (Capsicum anumm L.) was investigated. The potential changes in various growth and biochemical indices were evaluated in response to the treatments. According to the results, selenium treatments at concentrations of 10 and 20 mg/L reduced the biomass accumulation in both roots and shoots. These treatments also increased the content of hydrogen peroxide and malondialdehyde. The foliar application of selenium led to the increase of the concentrations of soluble phenols, proline and thiols. The activity of antioxidant enzymes including catalase, peroxidase, ascorbate peroxidase, and polyphenol oxidase were increased in response to the selenium treatments. The protease activity displayed a similar upward trend following the selenium treatments.


کلیدواژه‌ها English

Ascorbate peroxidase
Catalase
malondialdehyde
Peroxidase
Phenol
polyphenol oxidase
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  • تاریخ دریافت 18 خرداد 1405
  • تاریخ انتشار 18 خرداد 1405