Effect of biologically synthesized silver nanoparticles on Bacopa monnieri (Linn.) Wettst. plant growth metabolism

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• 作者：C. Krishnaraj ; ^{krishnarajbio@gmail.com} ; E.G. Jagan ; R. Ramachandran ; S.M. Abirami ; N. Mohan ; P.T. Kalaichelvan¹ ; ^{ptkalai2003@yahoo.com}
• 关键词：Acalypha indica ; AgNO3 ; Silver nanoparticles ; Bacopa monnieri (Linn.) Wettst. ; Catalase ; Peroxidase
• 刊名：Process Biochemistry
• 出版年：2012
• 出版时间：April, 2012
• 年：2012
• 卷：47
• 期：4
• 页码：651-658
• 全文大小：2473 K

文摘

In this present study, interactions of biologically synthesized silver nanoparticles on hydroponically grown Bacopa monnieri (Linn.) Wettst. plant growth metabolism were documented. Estimates of protein, carbohydrate, total phenols, in addition antioxidant enzymes, catalase and peroxidise were assayed in various parts of the plants grown in hydroponic solution. The silver nanoparticles used in this study were synthesized by treating AgNO₃ with aqueous leaves extracts of Acalypha indica Linn., a medicinal herb as a source of reductants. Enhanced peroxidase and catalase activity, simulated the stress conditions induced by the silver nitrate treatment. No severe toxic effects were observed in silver nanoparticles treated plants in the morphological studies under scanning electron microscopy (SEM) while structural aberrations were observed in the light microscopic evaluation of root and stem anatomy. Further, the uptake of silver in the root and stem tissues of B. monnieri (Linn.) Wettst. was confirmed using atomic absorption spectrophotometer (AAS).