烟草科技Issue(2)：68-71,4.
干旱胁迫下外源甜菜碱和脯氨酸对烤烟抗氧化代谢的影响
Effects of Exogenous Glycine Betaine and Proline on Antioxidant Metabolism of Flue-cured Tobacco Under Drought Stress
摘要
Abstract
In order to investigate the effects of glycine betaine and proline application on the resistance to drought, a pot culture experiment was carried out to study the effects of glycine betaine and proline spraying on the antioxidant metabolism of flue-cured tobacco under drought stress. The results showed that: l) Under drought stress, the contents of chlorophyll and soluble protein were increased, while MDA content was decreased to different extents by spraying glycine betaine or praline, which effectively delayed the consenescence of the plants. 2) Glycine betaine and proline spraying improved SOD activities to different extents and promoted proline accumulation in tobacco leaves, which were the important factors improving the drought resistance of flue-cured tobacco. 3) Either glycine betaine or proline could be used as exogenous regulating substance for flue-cured tobacco under drought stress. Glycine betaine was superior to proline in decreasing membrane lipid peroxidation in tobacco leaves, however, from the point of increasing CAT activity and decreasing MDA content, it would be more effective to apply the two together.关键词
烤烟/甜菜碱/脯氨酸/抗氧化代谢Key words
Flue-cured tobacco (Nicotiana tabacum L.)/Glycine betaine/Proline/Antioxidant metabolism分类
农业科技引用本文复制引用
梁太波,张景玲,田雷,王建伟,尹启生,蔡宪杰,刘阳,张仕祥..干旱胁迫下外源甜菜碱和脯氨酸对烤烟抗氧化代谢的影响[J].烟草科技,2013,(2):68-71,4.基金项目
中国烟草总公司郑州烟草研究院院长基金项目"烟叶抗氧化代谢特性对土壤水分的响应及调节研究"(112009CA0220) （112009CA0220）
山东省烟草公司科技重大专项"以重点卷烟品牌为导向的山东烟叶质量特征定位及培育研究"(200902). （200902）
