Indian Journal of Plant Physiology

  • Year: 2004
  • Volume: 9
  • Issue: 2

Lipid peroxidation and oxidative damage in aquatic duckweed (Lemna Minor L.) in response to aluminium toxicity

  • Author:
  • S.K. Panda, M.H. Khan
  • Total Page Count: 5
  • DOI:
  • Page Number: 176 to 180

Plant Biochemistry Laboratory, School of Life Sciences, Assam (Central) University, Silchar-788 011

*Corresponding author: E-mail: drskp_au@yahoo.com

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Abstract

A relationship between Al3+ ion toxicity and oxidative stress in Lemna minor L. was investigated. Incubation of Lemna in aluminium chloride solution in continuous light for 24–48 h showed uniform decrease in chlorophyll and carotenoid composition with a significant accumulation of free proline suggesting an osmoprotection from Al3+ induced water deficit. Aluminium toxicity resulted in increase in thiobarbituric acid reactive substances (TBARS), membrane injury index, peroxide content, catalase (CAT) and peroxidase (POX) activities and decrease in superoxide dismutase (SOD) activity.

Keywords

Al3+, catalase, Lemna minor L., peroxidase, superoxide dismutase, TBARS