نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکترای تخصصی (باغبانی) گرایش گیاهان دارویی، دانشگاه آزاد اسلامی واحد شیروان، شیروان، ایران

2 دانشیار بخش تحقیقات علوم زراعی و باغی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی خراسان رضوی، سازمان تحقیقات، آموزش و ترویج کشاورزی، ایران

3 استادیار گروه زراعت، دانشکده کشاورزی، دانشگاه آزاد اسلامی واحد شیروان، شیروان، ایران

4 استادیار گروه مهندسی شیمی، دانشگاه آزاد اسلامی واحد قوچان. قوچان، ایران

چکیده

زمینه و هدف  گیاه دارویی پنیرباد با دارا بودن اثرات ضدقارچی و ضدباکتریایی، کاهش‌دهنده قند و کلسترول خون، تقویت‌کننده سیستم ایمنی و آنتی‌اکسیدانی اخیراً موردتوجه فارماکولوژیست‌ها قرار گرفته است و به دلیل سازگاری بسیار وسیع نسبت به شرایط دشوار اکولوژیکی می‌تواند در مناطق گرمسیر کشور از جمله استان سیستان‌وبلوچستان رشد کند.
مواد و روش‌ها این مطالعه، تحت شرایط آزمایشگاهی در مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان خراسان رضوی در سال 139۷ در قالب طرح کاملاً تصادفی با چهار تکرار طراحی شد. غلظت‌های صفر، 2، 4، 6، 8 و 10 بار پلی‌اتیلن‌گلایکول برای القای تنش خشکی در محیط کشت MS حاوی بنزیل‌آدنین‌پورین بر صفات ثانویه گیاه پنیرباد مورد استفاده قرار گرفت.
یافته‌ها نتایج نشان داد که تنش خشکی 10 بار منجر به افزایش معنی‌دار فعالیت آنزیم‌های آنتی‌اکسیدان کاتالاز، پراکسیداز و آسکوربات پراکسیداز، محتوی پرولین، فنل و فلاونوئید و میزان نشتی غشا شد ولی از طرف دیگر، منجر به کاهش معنی‌دار محتوای رطوبت نسبی، محتوی یون پتاسیم و نسبت یون پتاسیم به سدیم گردید. همچنین بیشتر صفات موردمطالعه، همبستگی معنی‌دار دارند.
نتیجه‌گیری نتایج نشان داد که گیاه دارویی پنیرباد از تحمل قابل‌قبولی در برابر القای تنش خشکی با پلی‌اتیلن‌گلایکول برخوردار است. در کاهش اثرات منفی ناشی از تنش خشکی مکانیسم‌های آنزیمی (فعالیت آنزیم‌های آنتی‌اکسیدانت) و غیرآنزیمی (محتوی پرولین، فنل، فلاونوئید و غیره) نقش بسیار مهمی دارد. از طرف دیگر، تنش خشکی، منجر به افزایش برخی متابولیت‌ها همچون فنل و فلاونوئید که مصارف دارویی دارند، شد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Effect of drought stress (polyethylene glycol) on antioxidant and some physiological traits of Paneer-boot (Withania coagulans Dunal)

نویسندگان [English]

  • Aysan Ghahremani 1
  • Ebrahim Ganji_Moghadam 2
  • Maryam Tatari 3
  • Susan Khosroyar 4

1 Ph.D. student, Department of Horticultural Sciences, Shirvan Branch, Islamic Azad University, Shirvan, Iran

2 Associate Professor, Crop And Horticultural Science Research Department, Khorasan Agricultural and Natural Resources Research and Education Center, Areeo Mashhad, Iran

3 Assistant Professor, Department of Agronomy, Shirvan Branch, Islamic Azad University, Shirvan, Iran.

4 Assistant Professor, Department of Chemical Engineering, Quchan Branch, Islamic Azad University, Quchan, Iran

چکیده [English]

Introduction: Paneer-boot, with its antifungal and antibacterial effects, blood sugar and cholesterol-lowering, immune system, and antioxidant activity, has recently received pharmacologists' attention due to its high compatibility. Due to difficult ecological conditions, it can grow in the country's tropical regions such as Sistan and Baluchestan Province .
Materials & Methods: This study was designed in a completely randomized design with four replications under laboratory conditions at Khorasan Razavi Agricultural and Natural Resources Research and Education Center. Concentrations of 0, 2, 4, 6, 8, and 10 bar PEG were used to induce the effect of drought stress on MS medium containing BAP on secondary traits of cheese .
Results: The results showed that the drought stress significantly increased antioxidant enzymes such as catalase, peroxidase, ascorbate peroxidase, proline, phenol, and flavonoid content membrane leakage. On the other hand, it resulted in a significant decrease in the relative humidity content, potassium ion content and potassium to sodium ratio. Also, most of the studied traits had a significant correlation. Conclusion: The results showed that the Paneer-boot plant had acceptable tolerance to induction of drought stress with polyethylene glycol. Enzymatic and non-enzymatic mechanisms had a significant role in reducing the adverse effects of drought stress. On the other hand, drought stress increased some metabolites, such as phenol and flavonoids, which have medicinal uses .

کلیدواژه‌ها [English]

  • Proline
  • Paneer-boot
  • Antifungal
  • Flavonoid
  • Catalase
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