DOI: 10.11686/cyxb20100212 Web URL(s): http://cyxb.lzu.edu.cn/EN/article/downloadArticleFile.do?attachType=PDF&id=3083 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, H2 O2 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 H2 O2 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 H2 O2 contents. Exogenous SNP significantly alleviated MDA and H2 O2 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 H2 O2 , 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 ASA/CSSA/SSSA Citation (Crop Science -Like - may be incomplete ): [Caoye Xuebao] [Acta Prataculturae Sinica] .Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=237722 If there are problems with this record, send us feedback about record 237722 . Choices for finding the above item : DOI: 10.11686/cyxb20100212 Web URL(s): http://cyxb.lzu.edu.cn/EN/article/downloadArticleFile.do?attachType=PDF&id=3083 b10289426 Find from within TIC: Request through your local library's inter-library loan service (bring or send a copy of this TGIF record)
