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JOURNAL OF DESERT RESEARCH  2012, Vol. 32 Issue (6): 1669-1673    DOI:
Biology and Soil     
Responses of Antioxidant System of an Endemic Halophyte Reaumuria trigyn to NaCl Stress
XUE Yan1,2, WANG Ying-chun1, WANG Tong-zhi1
1.College of Life Science, Inner Mongolia University, Hohhot 010021, China; 2.Baotou Medical College, Baotou 014060, Inner Mongolia, China
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Abstract  

Reaumuria trigyna were cultivated in nutrient solutions at five NaCl levels(0, 100, 200,300, 400 mmol·L-1)for the investigation of plant antioxidant activities and active oxygen metabolism. Results show O-2 production rate significantly increases with NaCl concentration increase, and MDA and the relative electrical conductivity decrease first and then increase as NaCl concentration increases; the activities of SOD and POD significantly increase and CAT activity changes little as NaCl concentration increases; with increase of NaCl concentration, glutathione significantly increases, and ascorbic acid salt content decreases. The research revealed that SOD, CAT and glutathione are important components of antioxidant defense system for salt tolerance of R. trigyna.

Key words:  Reaumuria trigyna      NaCl stress      antioxidant system     
Received:  26 May 2012      Published:  08 June 2012
ZTFLH:  Q945.78  

Cite this article: 

XUE Yan1,2, WANG Ying-chun1, WANG Tong-zhi1. Responses of Antioxidant System of an Endemic Halophyte Reaumuria trigyn to NaCl Stress. JOURNAL OF DESERT RESEARCH, 2012, 32(6): 1669-1673.

URL: 

http://www.desert.ac.cn/EN/     OR     http://www.desert.ac.cn/EN/Y2012/V32/I6/1669

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