NDLI: Silver Nanoparticle-Mediated Enhancement in Growth and Antioxidant Status of Brassica juncea

Content Provider	Springer Nature Link
Author	Sharma, Priyadarshini Bhatt, Deepesh Zaidi, M. G. H. Saradhi, P. Pardha Khanna, P. K. Arora, Sandeep
Copyright Year	2012
Abstract	Metal nanoparticles can potentially be used as tools for engineering biological redox reactions. Present study underlines the effect of silver metal nanoparticles (at 0, 25, 50, 100, 200 and 400 ppm) on the growth and antioxidant status of 7-day-old Brassica juncea seedlings. Fresh weight, root and shoot length, and vigor index of seedlings is positively affected by silver nanoparticle treatment. It induced a 326 % increase in root length and 133 % increase in vigor index of the treated seedlings. Improved photosynthetic quantum efficiency and higher chlorophyll contents were recorded in leaves of treated seedlings, as compared to the control seedlings. Levels of malondialdehyde and hydrogen peroxide decreased in the treated seedlings. Nanoparticle treatment induced the activities of specific antioxidant enzymes, resulting in reduced reactive oxygen species levels. Decrease in proline content confirmed the improvement in antioxidant status of the treated seedlings. The observed stimulatory affects of silver nanoparticles are found to be dose dependent, with 50 ppm treatment being optimum for eliciting growth response. Present findings, for the first time indicate that silver nanoparticles promote the growth of B. juncea seedlings by modulating their antioxidant status.
Starting Page	2225
Ending Page	2233
Page Count	9
File Format	PDF
ISSN	02732289
Journal	Applied Biochemistry and Biotechnology
Volume Number	167
Issue Number	8
e-ISSN	15590291
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-06-13
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Silver nanoparticles Growth Antioxidant status Redox potential Quantum efficiency Reactive oxygen species Biochemistry Biotechnology
Content Type	Text
Resource Type	Article
Subject	Medicine Molecular Biology Environmental Engineering Biochemistry Bioengineering Applied Microbiology and Biotechnology Biotechnology

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