African Journal of
Plant Science

  • Abbreviation: Afr. J. Plant Sci.
  • Language: English
  • ISSN: 1996-0824
  • DOI: 10.5897/AJPS
  • Start Year: 2007
  • Published Articles: 718

Full Length Research Paper

Investigation of the effect of salt stress on the antioxidant enzyme activities on the young and old leaves of salsola (Stenoptera) and tomato (Lycopersicon esculentum L.)

Mahmut Doğan    
Harran University, Faculty of Science, Department of Biology, Osmanbey Campus, Sanliurfa, Turkey.
Email: [email protected]

  •  Accepted: 21 October 2011
  •  Published: 27 January 2012

Abstract

We can define all negative factors affecting plant growth as stress. We can say that one of the most important problems among stress factors is salt stress. Although, many researches have been done regarding the effects of salt stress, especially the different responses to salt stress among young and old leaves are being investigated nowadays. For this purpose, responses to salt stress on young and old leaves of salsola (Stenoptera) plant which is considered halophyte, and tomato (Lycopersicon esculentum L.) which is considered glycophyte has been investigated. According to the results of the research, based on chlorophyl, MDA, ions (Na+, K+, Ca+2 and Cl-) and enzyme (reduced glutathione (GR) ascorbate peroxidase (APX, EC 1.11.1.11) superoxide dismutase (SOD, EC 1.15.1.1) and catalase (CAT, EC 1.11.1.6) amounts, it was determined that young upper leaves gave positive responses compared to old lower leaves, and young upper leaves were more resistant.