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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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        Abstract - Issue Jan 2014, 35 (1)                                                                                                             Back

nstantaneous and historical temperature effects on a-pinene

Studies on toxic effects of nitrogenous compound, putrescine and spermine on cucumber plant growth


Ramalingam Radhakrishnan1, Jae-Ho Shin2, Yeon-Sik Choo3, Jong-Guk Kim4 and In- Jung Lee1*

1School of Applied Biosciences, Kyungpook National University, Sangyuk-Dong, Buk-gu, Daegu 702 701, Korea

2School of Applied Biosciences, Kyungpook National University, Daegu 702 701, Korea

3Department of Biology, College of National Sciences, Kyungpook National University, Daegu 702 701, Korea

4Department of Life Sciences and Biotechnology, Kyungpook National University, Daegu 702 701, Korea

*Corresponding Author E-mail:




Publication Data

Paper received:

25 May 2012


Revised received:

08 November 2012



24 December 2012




The present study was conducted to determine the effects of putrescine (Put) and spermine (Spm) on cucumber plant growth. The low concentration of Put and Spm (0.02, 0.1 and 0.5 mM) was applied to cucumber seedlings. Put and Spm treatments reduced the length and fresh weight of shoots, leaf area, fresh and dry weight of leaves compared to their controls. The enhancement of electrical conductivity and lipid peroxidation was shown in cucumber plants exposed with Put and Spm. However, plants treated with Put and Spm showed low concentration of polyphenol contents with declined level of catalase and peroxidase activity than their controls. These results suggest that application of low concentrations of Put and Spm exhibit detrimental effects on plant growth through the enhanced level of lipid peroxidation and reduction of antioxidants activities.


 Key words


Antioxidants, Cucumber, Putrescine, Spermine, Toxicity



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