植物研究2013，Vol.33Issue(1)：45-50,6.DOI:10.7525/j.issn.1673-5102.2013.01.008
NaCl处理下黄花补血草幼苗生理特性的变化
Changes of Physiological Properties in Limonium aureum (Linn.) Hill Seedlings under Salt Stress
摘要
Abstract
In this study, desert halophyte Limonium aureum(Linn. ) Hill was used to investigate the changes of osmolyte content, reactive oxygen species production and antioxidant enzyme activities in the leaves of seedlings under different NaCl concentrations. The levels of proline, soluble sugar and H2O2 as well as the rate of O2o- production increased in the seedlings treated with different NaCl concentrations. Compared with the control, the a-mount of soluble protein decreased in the leaves of seedlings treated with 25 and 50 mmol·L-1 NaCl, but enhanced under 100 and 150 mmol·L-1 NaCl treatments. Additionally, all applied NaCl concentrations resulted in the enhancement of superoxide dismutase (SOD) and ascorbate peroxidase ( APX) activities. In contrast, the activity of peroxidase increased at first and then decreased, but significant decrease in catalase activity was observed in the leaves of L. aureum treated with NaCl, as compared with the untreated seedlings. These results indicated that the accumulation of osmoregulation substances and the enhancements of SOD and APX activities in response to salt stress elevated the osmotic adjust action and the oxidation resistance ability in the leaves of L. aureum , which might be associated with the elevation of plant tolerance to salt condition.关键词
盐胁迫/黄花补血草/渗透调节物/活性氧/抗氧化酶Key words
salt stress/Limonium aureum(L. ) Hill/osmolytes/ROS/antioxidant enzymes分类
农业科技引用本文复制引用
尤佳,张菁,王文瑞,卢金,贾鹏翔,缪建顺,杨颖丽..NaCl处理下黄花补血草幼苗生理特性的变化[J].植物研究,2013,33(1):45-50,6.基金项目
国家自然科学基金项目(31160088,30960064) （31160088,30960064）
新世纪优秀人才支持计划项目和甘肃省自然科学基金项目(1010RJZA027) （1010RJZA027）
