Phytotoxicity of carbon nanotubes assessed by brassica juncea and phaseolus mungo

Gajanan Ghodake, Yeong Deuk Seo, Donghee Park, Dae Sung Lee

Research output: Contribution to journalArticlepeer-review

99 Scopus citations

Abstract

Two agronomic plant species were evaluated for the phytotoxicity of multi-walled carbon nanotubes (CNTs) using germination and seedling growth of Brassica juncea and Phaseolus mungo. Both B. juncea and P. mungo seeds showed 100% germination with the application of CNTs, which indicated their non-hazardous nature for the germination of the seeds. As the B. juncea seed was grown with CNTs at 10 μg/ml, 20 μg/ml, and 40 μg/ml, the enhancement of root growth was evidenced up to 138%, 202%, and 135%, respectively, compared to the control. In the case of B. juncea, the heights of the shoot and root were not affected at all by the studied CNTs' concentrations; however, phytotoxicity was evidenced at 40 μg/ml CNTs by optical microscopy of the hairy root system, since a severe reduction in both the number of root hairs and their length was observed.

Original languageEnglish
Pages (from-to)157-160
Number of pages4
JournalJournal of Nanoelectronics and Optoelectronics
Volume5
Issue number2
DOIs
StatePublished - Aug 2010

Keywords

  • Brassica juncea
  • Carbon nanotubes
  • Germination
  • Phaseolus mungo
  • Phytotoxicity

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