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Carnosic Acid Content Increased by Silver Nanoparticle Treatment in Rosemary (Rosmarinus officinalis L.).
Applied Biochemistry and Biotechnology ( IF 3 ) Pub Date : 2019-12-04 , DOI: 10.1007/s12010-019-03193-w
Mojtaba Hadi Soltanabad 1, 2 , Mohammad B Bagherieh-Najjar 1 , Manijeh Mianabadi 1
Affiliation  

Biosynthesis of carnosic acid (CA), one of the most industrially valuable medicinal compounds present in rosemary (Rosmarinus officinalis L.) leaves, is affected by various plant stressors. In this study, effects of silver nanoparticle (AgNP) treatment on the secondary metabolism and CA production of rosemary plants were investigated. AgNP of 0, 25, 50, 100, and 200 ppm were utilized on hydroponically grown plants using foliar spray. Efficient absorbance and translocation of AgNPs to the plant roots were confirmed by XRF (X-ray fluorescence) analysis. The fluctuations of important antioxidant compounds such as CA content, phenolics, flavonoids, and acid ascorbic were analyzed and their correlations evaluated. Results revealed that application of 200 ppm AgNPs for 12 days increased CA level more than 11%, as compared to the control plants. Furthermore, significant positive correlations were observed between total flavonoids and CA content under AgNP treatment, suggesting that AgNP acted as an elicitor and triggered the enhancement of CA accumulation effectively. These data suggest that concentration-dependent AgNP may be used to boost antioxidant activity and phytochemical contents of other medicinal plants.

中文翻译:

银纳米颗粒处理迷迭香(Rosmarinus officinalis L.)中的鼠尾草酸含量增加。

肌酸(CA)的生物合成,迷迭香(Rosmarinus officinalis)中最具工业价值的药用化合物之一L.)叶子,受各种植物胁迫的影响。在这项研究中,研究了银纳米颗粒(AgNP)处理对迷迭香植物的次级代谢和CA产生的影响。使用叶面喷雾在水培生长的植物上使用0、25、50、100和200 ppm的AgNP。通过XRF(X射线荧光)分析证实了AgNPs的高效吸收和易位。分析了重要抗氧化剂化合物(如CA含量,酚类,类黄酮和抗坏血酸)的波动,并评估了它们之间的相关性。结果表明,与对照植物相比,施用200 ppm AgNPs 12天可使CA水平提高11%以上。此外,在AgNP处理下,总黄酮与CA含量之间存在显着的正相关,提示AgNP可以作为激发子有效触发CA积累。这些数据表明,浓度依赖性AgNP可用于提高其他药用植物的抗氧化活性和植物化学含量。
更新日期:2019-12-11
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