Volume 13, Issue 37 (4-2021)                   jcb 2021, 13(37): 185-196 | Back to browse issues page

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Moharramnejad S, Bandehagh A, Shafiei Y. Assessment of Superoxide Dismutase Activity, Photosynthetic Proteins Involved and Sodium and Potassium Contents in Maize Line Seedlings under Salinity Stress. jcb. 2021; 13 (37) :185-196
URL: http://jcb.sanru.ac.ir/article-1-1192-en.html
Abstract:   (321 Views)
To evaluate the effect of salinity stress activity of superoxide dismutase, photosynthetic proteins involved and sodium and potassium contents on maize line seedlings, a factorial experiment based on completely randomized design with four replicates was performed under greenhouse conditions. Two maize inbred lines as B73 and MO17, and two salinity levels including 0 and 200 mM NaCl were considered as the first and second factors, respectively. The results indicated that salinity stress had a significant effect on the dry weight and Na+ and K+ contents in maize line seedlings. Electrophoresis analysis of superoxide dismutase enzyme revealed three different isoforms. Salinity stress increased the activity of superoxide dismutase isoforms. The results obtained from 2-D electrophoresis of maize lines showed 10 and 2 repeatable protein spots in photosynthetic system in B73 and MO17 maize lines, respectively. Salinity stress increased the expression of 12 protein spots involved in photosynthesis of maize lines. As results indicated that MO17 line more salt-sensitive than B73 line. The results show that maize lines as B73 and MO17 can control the adverse effects of salinity stress by increasing the activity of superoxide dismutase isoforms and enhancing the expression of proteins involved in photosynthesis and regulating the Na+ and K+.
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Type of Study: Research | Subject: Special
Received: 2020/12/22 | Revised: 2021/06/1 | Accepted: 2021/02/8 | Published: 2021/06/1

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