Exogenous Glycine Betaine Ameliorates the Adverse Effect of Salt Stress on Perennial Ryegrass
文献类型：期刊论文
| 作者 | Hu, Longxing; Hu, Tao; Zhang, Xunzhong; Pang, Huancheng; Fu, Jinmin |
| 刊名 | JOURNAL OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE
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| 出版日期 | 2012 |
| 英文摘要 | Salinity stress may involve the accumulation of glycine betaine (GB). The objective of this study was to examine whether exogenous GB would ameliorate the detrimental effect of salinity stress on perennial ryegrass (Lolium perenne). The grass was subjected to two salinity levels (0 and 250 mM NaCl) and three GB levels (0, 20, and 50 mm). Salinity resulted in a remarkable decrease in vertical shoot growth rate (VSGR), shoot and root fresh weight, relative water content (RWC), relative transpiration rate (Tr), and chlorophyll (Chl) content, superoxide dismutase (SOD), catalase (CAT), and ascorbate peroxidase (APX) activities. Plants subjected to salt exhibited an increase in leaf electrolyte leakage (EL), lipid peroxidation (MDA), and proline content. Application of GB reduced EL, MDA, and proline content in salt-stressed plants. Perennial ryegrass subjected to salt stress plus GB had a greater level of VSGR, RWC, relative Tr, Chl content, and activities of SOD, CAT, and APX when compared with salt-stressed without GB. Salt stress increased Na+ and decreased K+ content, which resulted in a higher Na+/K+ ratio in perennial ryegrass. Application of 20 mm GB suppressed Na+ accumulation, whereas the K+ content was significantly increased in shoot, which led to a higher K+/Na+ ratio under saline conditions. These results suggested that GB-enhanced salt tolerance in perennial ryegrass was mainly related to the elevated SOD, CAT, and APX activity and alleviation of cell membrane damage by reducing oxidation of membrane lipid and improving the ion homeostasis under salt stress. |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/823]  |
| 专题 | 中国科学院武汉植物园 |
| 推荐引用方式 GB/T 7714 | Hu, Longxing,Hu, Tao,Zhang, Xunzhong,et al. Exogenous Glycine Betaine Ameliorates the Adverse Effect of Salt Stress on Perennial Ryegrass[J]. JOURNAL OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE,2012. |
| APA | Hu, Longxing,Hu, Tao,Zhang, Xunzhong,Pang, Huancheng,&Fu, Jinmin.(2012).Exogenous Glycine Betaine Ameliorates the Adverse Effect of Salt Stress on Perennial Ryegrass.JOURNAL OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE. |
| MLA | Hu, Longxing,et al."Exogenous Glycine Betaine Ameliorates the Adverse Effect of Salt Stress on Perennial Ryegrass".JOURNAL OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE (2012). |
入库方式： OAI收割
来源：武汉植物园
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