biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 52:561-564, 2008 | DOI: 10.1007/s10535-008-0111-7

Impact of copper on reactive oxygen species, lipid peroxidation and antioxidants in Lemna minor

S. K. Panda1,*
1 Plant Biochemistry and Molecular Biology Laboratory, Department of Life Science, School of Life Sciences, Assam University, Silchar, India

Lemna minor L. treated with 20, 50, or 100 µM CuSO4 accumulated Cu and reactive oxygen species (hydrogen peroxide and superoxide radical) in frond and root cells. The time-course analysis of lipid peroxidation showed high increment in malondialdehyde production only after 12 and 48 h of Cu treatment. Guaiacol peroxidase and superoxide dismutase activities decreased after 48 h while glutathione reductase activity enhanced 48 h after Cu-treatment. Ascorbate and glutathione contents increased with the increasing Cu stress.

Keywords: ascorbate; glutathione; duckweed; malondialdehyde; oxidative stress; peroxidase
Subjects: antioxidants, antioxidant enzymes; ascorbate peroxidase; copper; glutathione reductase; guaiacol peroxidase; heavy metals; Lemna minor; lipid peroxidation; malondialdehyde; peroxidase

Received: March 14, 2007; Accepted: March 21, 2008; Published: September 1, 2008  Show citation

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Panda, S.K. (2008). Impact of copper on reactive oxygen species, lipid peroxidation and antioxidants in Lemna minor. Biologia plantarum, 52(3), 561-564. doi: 10.1007/s10535-008-0111-7
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