Naser Karimi

Department of Biology, Faculty of Sciences, Razi University, Kermanshah, Iran.

[ 1 ] - Shikonin Production by Callus Culture of Onosma bulbotrichom as Active Pharmaceutical Ingredient

The objective of this research was in-vitro germination and callus induction of Onosma bulbotrichum (O. bulbotrichum) as a medicinal herb which belongs to Boraginaceae family. For germination, the seedswere cultured on growth regulator-free MS medium and for callus induction, seeds were sown on modified MS medium containing different concentrations of kinetin (kn)- Indole-3-acetic acid (IAA) an...

[ 2 ] - Biosynthesis, Characterization, Antimicrobial and Cytotoxic Effects of Silver Nanoparticles Using Nigella arvensis Seed Extract

The biogenic synthesis of metal nanomaterial offers an environmentally benign alternative to the traditional chemical synthesis routes. In the present study, the green synthesis of silver nanoparticles (AgNPs) from aqueous solution of silver nitrate (AgNO3) by using Nigella arvensis L. seed powder extract (NSPE) has been reported. AgNPs were characterized by UV–vis absorption spectroscopy with ...

[ 3 ] - Shikonin Production by Callus Culture of Onosma bulbotrichom as Active Pharmaceutical Ingredient

[ 4 ] - Biosynthesis, Characterization, Antimicrobial and Cytotoxic Effects of Silver Nanoparticles Using Nigella arvensis Seed Extract

[ 5 ] - اثر سلنیوم بر رشد و برخی پارامترهای فیزیولوژیکی دو گونه تره ایرانی (Allium iranicum Wendelbo) و تره کوهی (Allium ampeloprasum L.)

Selenium as a metalloid and useful element has different effects on plants. It enhances plant growth at low concentrations while high concentrations of this element can cause stress in plants. The aim of this study was to investigate the effect of different concentrations of selenium  (0, 20, 40, 120 and 240 µM) equivalent to (0, 2, 4, 11 and 22 mg/L), at the 4-leaf stage, on shoot a...

[ 6 ] - اثر غلظت‌های مختلف آرسنیک و فسفر بر محتوی اسمولیت‌های بخش هوایی گیاه Isatis cappadocica

Arsenic is considered as one of the most important environmental contaminant compound. Some plant species can grow in arsenic contaminated soil and they are able to reduce arsenic toxicity. Nowadays, phytoremediation as a new and friendly environmental technique employs the use of plants to remediate contaminated soil. Previous studies showed that Isatis cappadocica is an arsenic hyperaccumulat...

[ 7 ] - غربال‏گری، خالص‏سازی و شناسایی دیاتومه‏های سیستم تصفیه پساب خروجی شرکت پالایش نفت کرمانشاه

مقدمه: وجود پالایشگاه‏های متعدد در ایران، اهمیت تصفیه پساب را توجیه می‏کند. ریز جلبک‏ها با توجه به تنوع و کاربرد‏ فراوان، در این امر برتری دارند. از ریزجلبک‏های موثر، می‏توان به باسیلاریوفایت، که به دیاتومه‏ها معروف هستند، اشاره کرد که از نظر اکولوژی بسیار موفق هستند. بهترین روش، جستجوی دیاتومه‏ها در محل آلودگی است. با توجه به مطالعات پالمر، با شناسایی گونه‏های مقاوم، می‏توان از آن‏ها به عنوان ...

[ 8 ] - Interactive of arsenate and phosphate on arsenic-induced oxidative stress in root of Isatis cappadocica Desv.

In present study, growth, arsenic accumulation, and antioxidant responses in root of Isatis cappadocica were investigated in response to application of arsenate and phosphate. Reduction in root dry weights was significant with 1200 µM arsenate and 5 µM phosphate treatments. Phosphate had a steady effect on root dry weight improvement, especially in high arsenate treatments ≥ 200 μM. As concentr...

[ 9 ] - بررسی اثر برخی گیاهان دارویی بر رشد و فراسنجه‌های خون گوساله‌های شیرخوار هلشتاین

این تحقیق به‌منظور بررسی اثر افزودن گیاهان چویر، رزماری و مخلوط آن‌ها بر رشد و فراسنجه‌های خون گوساله‌های شیرخوار هلشتاین متولد شده از گاوهای یک نوبت و چند نوبت زایش انجام شد. تعداد 32 راس گوساله متولد شده از مادرهای زایش اول بامیانگین وزن اولیه 4/30±25/36 کیلوگرم و 32 راس گوساله متولد شده از مادرهای چند نوبت زایش کرده بامیانگین وزن اولیه 36/3±38/37 کیلوگرم از سن چهار روزگی به مدت 60 روز به صور...

[ 10 ] - The effect of arsenic and sodium nitroprusside on the physiological responses and antioxidant enzymes activity of Isatis cappadocica

Arsenic (As) stress, through the creation of oxidative stress, can cause phytotoxicity (e.g. The decrease of growth and chlorophyll content) in plants. Nitric oxide (NO), by promotion of the antioxidant system, plays an important role in reducing heavy metal-induced oxidative stress. In this study, the role of exogenously applied sodium nitroprusside (SNP; a NO donor) on physiological responses...

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