Superoxide dismutase activity in salt stressed wheat seedlings

Date

2003-01-01

Author

Eyidogan, F
Öktem, Hüseyin Avni
Yucel, M

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We investigated the effect of salt stress on enzymatic activity of superoxide dismutase (SOD) isozymes in shoot and root tissues of salt tolerant and sensitive wheat (Triticum aestivum L. and Triticum durum Defs.) cultivars. Ten day old seedlings were subjected to 0.7 M NaCl stress for 3 and 5 days. Seedlings treated in the same manner without salt stress served as controls. Activity of SOD isozymes in root and shoot extracts was determined by activity staining of native polyacrylamide gels. In both shoot and root extracts of examined cultivars two isozymes of SOD, namely MnSOD and Cu/ZnSOD were identified. Cu/ZnSOD activity comprised 90 % of total SOD activity in both root and shoot tissues. Salt stress caused 1-1.5 fold increase in MnSOD activity of shoots in tolerant cultivars when compared with non-stressed controls. Under stress conditions, compared to controls all cultivars exhibited reduced MnSOD activity in root tissues. Cu/ZnSOD activity, on the other hand, was remarkably enhanced (3-4 fold) in root extracts of the tolerant cultivars, whereas it was reduced in the sensitive ones.

Subject Keywords

NaCl, Salt stress, SOD, Superoxide dismutase

URI

https://hdl.handle.net/11511/52728

Journal

ACTA PHYSIOLOGIAE PLANTARUM

Collections

Department of Biology, Article

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Citation Formats

F. Eyidogan, H. A. Öktem, and M. Yucel, “Superoxide dismutase activity in salt stressed wheat seedlings,” ACTA PHYSIOLOGIAE PLANTARUM, pp. 263–269, 2003, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/52728.