期刊
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
卷 95, 期 3, 页码 379-384出版社
SPRINGER
DOI: 10.1007/s00128-015-1595-4
关键词
Germination toxicity; Silver ions; Nano-Ag2O; Vigna radiata
资金
- Council of Scientific and Industrial Research (India), (CSIR, EU-IV) [1121020571, 19-12/2010]
- Indian Institute of Technology Delhi (India), Advanced Instrumentation Research Facility (AIRF) JNU, New Delhi
Transformation of silver oxide nanoparticles (nano-Ag2O) to silver nanoparticles (nano-Ag) and silver ions in environment is possible which might pose toxicity to plants and other species. The objective of this study was to study effects of nano-Ag2O and silver ions on growth of Mung bean (Vigna radiata) seedlings. V. radiata seeds were exposed to nano-Ag2O and silver ions (concentration range: 4.3 x 10(-7), 4.3 x 10(-6), 4.3 x 10(-5), 4.3 x 10(-4), and 4.3 x 10(-3) mol/L) for 6 days. Root length, shoot length and dry weight of seedlings were found to decrease due to exposure of nano-Ag2O and silver ions. These findings indicate silver ions to be more toxic to V. radiata seeds than nano-Ag2O. Silver content in seedlings was found to increase with increasing concentrations of nano-Ag2O and silver ions. Overall, findings of the present study add to the existing knowledge of phytotoxicity of silver-based nanoparticles of different chemical compositions to V. radiata seeds and need to be considered during use of nanoparticles-contaminated water for irrigation purposes.
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