Full TGIF Record # 237722
Item 1 of 1
DOI:10.11686/cyxb20100212
Web URL(s):http://cyxb.lzu.edu.cn/EN/article/downloadArticleFile.do?attachType=PDF&id=3083
    Last checked: 02/11/2016
    Requires: PDF Reader
Publication Type:
i
Report
Author(s):Liu, Jian-xin; Wang, Xin; Li, Bo-ping
Author Affiliation:Department of Life Science, Longdong University, Qingyang, China
Title:Effects of exogenous nitric oxide donor SNP on ascorbate-glutathione cycle metabolism in ryegrass seedling leaves under NaCl stress
Source:[Caoye Xuebao] [Acta Prataculturae Sinica]. Vol. 19, No. 2, April 20 2010, p. 82-88.
# of Pages:7
Publishing Information:[Lanzhou Shi, China]: ["Cao Ye Xue Bao" Bian Ji Wei Yuan Hui]
Abstract/Contents:"Effects of the exogenous NO donor sodium nitroprusside (SNP) on the ascorbate-glutathione cycle dependent antioxidant enzyme activities, contents of antioxidant substance, H2O2 and malondialdehyde (MDA) in leaves of hydroponically-grown perennial ryegrass (Lolium perenne) seedlings under 150 mmol/L NaCl stress were investigated. The results showed that 100 µmol/L SNP slightly reduced the MDA and H2O2 contents of ryegrass seedling leaves under normal growth conditions, but exogenous methylene blue (MB), the inhibitor of the key enzyme guanylate cyclase (GC) during signal transfer of NO, increased the MDA and H2O2 contents. Exogenous SNP significantly alleviated MDA and H2O2 accumulations in ryegrass seedling leaves under NaCl stress, while the activities of APX, GR and DHAR, the contents of ASA and GSH, and the ratios of ASA/DHA and GSH/GSSG were increased. Under NaCl stress, the DHA and GSSG contents were reduced while the activity of MDAR was not affected. MB reversed some effects of SNP under NaCl stress, such as increasing the levels of MDA and H2O2 , but reducing the activities of APX and GR, the contents of ASA and GSH, and the ratios of ASA/DHA and GSH/GSSG. The DHA and GSSG contents were increased but the activities of MDAR and DHAR were not significantly affected under NaCl stress. These findings suggested that NO might be involved in regulation of ascorbate-glutathione cycle metabolism dependent on the activities of APX and GR, the contents of ASA and GSH, and the ratios of ASA/DHA and GSH/GSSG through the GC pathway thus alleviating the oxidative damage to ryegrass seedling leaves from salt stress and improving salt resistance of the perennial ryegrass plants."
Language:Chinese
References:34
Note:Abstract also appears in English
"Sum No. 85"
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Liu, J.-x., X. Wang, and B.-p. Li. 2010. Effects of exogenous nitric oxide donor SNP on ascorbate-glutathione cycle metabolism in ryegrass seedling leaves under NaCl stress. (In Chinese) [Caoye Xuebao] [Acta Prataculturae Sinica]. 19(2):p. 82-88.
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DOI: 10.11686/cyxb20100212
Web URL(s):
http://cyxb.lzu.edu.cn/EN/article/downloadArticleFile.do?attachType=PDF&id=3083
    Last checked: 02/11/2016
    Requires: PDF Reader
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