| 万春阳王丹侯俊玲△ 王文全彭芳.NaCl 胁迫对甘草生长及抗氧化酶活性的影响[J].,2011,11(10):1805-1809 |
| NaCl 胁迫对甘草生长及抗氧化酶活性的影响 |
| Effects of NaCl Stress on Growth and Antioxidant Enzyme Activities ofGlycyrrhiza Uralensis |
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| DOI： |
| 中文关键词: NaCl 胁迫 甘草 生长 抗氧化酶 |
| 英文关键词: Salt stress Glycyrrhiza uralensis Growth Antioxidant enzyme activities |
| 基金项目:国家自然科学基金资助项目（30572328） |
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| 中文摘要: |
| 目的：通过分析不同浓度NaCl 胁迫下甘草生长和抗氧化酶活性的变化探讨甘草对盐分胁迫的适应性机理；方法：采用不
同浓度的NaCl 溶液(配成Hoagland 液)处理盆栽一年生甘草，分别于35 d、70 d 和105 d 取样，测定甘草株高、地上部分鲜、干重、
根鲜、干重及甘草叶片SOD、POD、CAT 活性，分析各生长指标与抗氧化酶活性的相关性；结果：NaCl 胁迫70 d 和105 d，0.6% 和
0.9%处理组的株高、地上部分鲜、干重及根鲜、干重均显著低于CK，SOD、POD 及CAT 活性均显著高于CK，经相关性分析得知，
SOD、POD 及CAT 活性与各生长指标均负相关，其中POD 活性与各生长指标极显著负相关；结论：甘草对NaCl 胁迫的响应有
胁迫时间和浓度的依赖性，在遭遇胁迫时，通过改变自身的生长和提高抗氧化酶活性，来提高机体的抗盐能力。 |
| 英文摘要: |
| Objective: To investigate the effect of salt stress on the growth and antioxidation enzyme activities of Glycyrrhiza uralensis.
Methods: Annual Glycyrrhiza uralensis was cultivated in the plastic flowerpot irrigated with various concentrations of NaCl
(Hoagland solution) for different duration. The height, fresh/dry weight of shoots, fresh/dry weight of root, SOD, POD and CAT activities
were determined 35 d, 70 d and 105 d after treatment. The correlation of the growth indices and antioxidant enzymes activities were
analyzed. Results: On 70th and 105th days after the treatment, the height, the shoots fresh/dry weight and the root fresh/dry weight of 0.6
% and 0.9 % treatment groups decreased significantly compared with CK, the SOD, POD and CAT acticity of 0.6 % and 0.9 % treatment
groups were extremely higher than those in the control group. The correlation analysis showed that SOD, POD and CAT activities had a
negative correlation with growth indices, while POD activity has negative correlation with growth indices. Conclusion: The growth of
Glycyrrhiza uralensis depends on NaCl concentration and the treated duration. When suffered stress, it improves the body salt tolerance
by decreasing growth and increasing antioxidation enzyme activities. |
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