Effect of Silicon on Antioxidant Enzymes of Wheat (Triticum aestivum L.) Grown under Salt Stress

Silicon ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2783-2788 ◽  
Author(s):  
Ayesha Mushtaq ◽  
Zartasha Khan ◽  
Sajjida Khan ◽  
Sabeena Rizwan ◽  
Uzma Jabeen ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Antioxidant Enzymes ◽  
Salt Stress ◽  
Triticum Aestivum L

scholarly journals Ethylene reduces glucose sensitivity and reverses photosynthetic repression through optimization of glutathione production in salt-stressed wheat (Triticum aestivum L.)

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Zebus Sehar ◽  
Noushina Iqbal ◽  
M. Iqbal R. Khan ◽  
Asim Masood ◽  
Md. Tabish Rehman ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Salt Stress ◽  
Photosynthetic Activity ◽  
Reduced Glutathione ◽  
Buthionine Sulfoximine ◽  
Triticum Aestivum L ◽  
Sink Strength ◽  
Glucose Sensitivity ◽  
Photosynthetic Potential ◽  
Stressful Environments

AbstractEthylene plays a crucial role throughout the life cycle of plants under optimal and stressful environments. The present study reports the involvement of exogenously sourced ethylene (as ethephon; 2-chloroethyl phosphonic acid) in the protection of the photosynthetic activity from glucose (Glu) sensitivity through its influence on the antioxidant system for adaptation of wheat (Triticum aestivum L.) plants under salt stress. Ten-day-old plants were subjected to control and 100 mM NaCl and treated with 200 µl L−1 ethephon on foliage at 20 days after seed sowing individually or in combination with 6% Glu. Plants receiving ethylene exhibited higher growth and photosynthesis through reduced Glu sensitivity in the presence of salt stress. Moreover, ethylene-induced reduced glutathione (GSH) production resulted in increased psbA and psbB expression to protect PSII activity and photosynthesis under salt stress. The use of buthionine sulfoximine (BSO), GSH biosynthesis inhibitor, substantiated the involvement of ethylene-induced GSH in the reversal of Glu-mediated photosynthetic repression in salt-stressed plants. It was suggested that ethylene increased the utilization of Glu under salt stress through its influence on photosynthetic potential and sink strength and reduced the Glu-mediated repression of photosynthesis.

scholarly journals Response of growth and antioxidant enzymes to osmotic stress in two different wheat (Triticum aestivum L.) cultivars seedlings

2012 ◽  
Vol 58 (No. 12) ◽  
pp. 534-539 ◽  
Author(s):  
G.Q. Wu ◽  
L.N. Zhang ◽  
Y.Y. Wang
Keyword(s):  
Triticum Aestivum ◽  
Antioxidant Enzymes ◽  
Osmotic Stress ◽  
Wheat Cultivar ◽  
Triticum Aestivum L ◽  
Shoot Length ◽  
The Other ◽  
Wheat Cultivars ◽  
Wheat Seedlings ◽  
Drought Tolerant

 To investigate the responses of growth and antioxidant enzymes to osmotic stress in two different wheat cultivars, one drought tolerant (Heshangtou, HST) and the other drought sensitive (Longchun 15, LC15), 15-day-old wheat seedlings were exposed to osmotic stress of –0.25, –0.50, and –0.75 MPa for 2 days. It is found that osmotic stress decreased shoot length in both wheat cultivars, whereas to a lesser degree in HST than in LC15. The contents of malondialdehyde (MDA) and the activities of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) of shoot in both wheat cultivars were increased by osmotic stress. It is clear that MDA contents increased less in the more drought tolerant cultivar HST than in drought sensitive one LC15. On the contrary, POD and CAT activities increased more in HST than LC15 under osmotic stress. As the activity of SOD, however, no significant differences were found between HST and LC15. These results suggest that wheat cultivar HST has higher activities of antioxidant enzymes such as POD and CAT to cope with oxidative damage caused by osmotic stress compared to sensitive LC15.  

Expression and promoter analysis of the TaLTP1 gene induced by drought and salt stress in wheat (Triticum aestivum L.)

Plant Science ◽  
2004 ◽  
Vol 167 (5) ◽  
pp. 995-1001 ◽  
Author(s):  
Cheol Seong Jang ◽  
Ho Joung Lee ◽  
Suck Joo Chang ◽  
Yong Weon Seo
Keyword(s):  
Triticum Aestivum ◽  
Salt Stress ◽  
Promoter Analysis ◽  
Triticum Aestivum L ◽  
Drought And Salt Stress
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