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Journal of Environmental Biology

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

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        Abstract - Issue Jan 2015, 36 (1)                                                                                                             Back



nstantaneous and historical temperature effects on a-pinene

Effects of exogenous salicylic acid on growth characteristics and biochemical content of wheat seeds under arsenic stress

 

Fikriye Zengin*

Department of Science Education, Firat University, Elazig - 23119, Turkey

*Corresponding Author E-mail: fzengin@firat.edu.tr

 

 

Publication Data

Paper received:

14 December 2012

 

Revised received:

26 December 2012

 

Re-revised received:

07 April 2013

 

Accepted:

10 July 2014

 

Abstract

The present study illustrates the phytotoxic effect of As on wheat seedlings and pre-application of salicylic acid in alleviating toxic effect of arsenic. Wheat seedlings treated with different concentrations (50-400?M) of arsenic decreased the germination rate (34.7% and 86.9%), root and coleptile length, fresh and dry weight of roots and coleoptile, chlorophyll (67%) and protein content (27.1%), while increased proline and MDA content. However, pretreatment with 1mM saliycilic acid partially alleviated the toxic effect of arsenic on germination parameters and significantly reduced the proline (181.2%) and MDA (80%) content thereby increasing chlorophyll and protein content in As stressed wheat plants (p<0.01 or p<0.05). The data suggests that saliycilic acid reduced the damaging effects generated by As and enhanced the tolerance of wheat plants to arsenic toxicity. ?  

 

 Key words

 

Arsenic toxicity, Chlorophyll, Germination, Proline, Salicylic acid, Wheet 

 

 

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