钙对铝胁迫下水稻抗氧化酶活性的影响 |
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引用本文: | 伍志权,郑雪宜,钱春梅. 钙对铝胁迫下水稻抗氧化酶活性的影响[J]. 安徽农业科学, 2011, 39(35): 21732-21734 |
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作者姓名: | 伍志权 郑雪宜 钱春梅 |
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作者单位: | 华南农业大学生命科学学院,广东广州510642;广东汇信农产品检验有限公司,广东佛山528226;华南农业大学生命科学学院,广东广州,510642 |
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摘 要: | [目的]探讨钙缓解水稻幼苗铝毒的作用。[方法]以铝敏感的水稻品种"湘中籼2号"为试验材料,研究钙对铝胁迫下水稻幼苗根伸长、膜脂过氧化及抗氧化酶活性的影响。[结果]提高CaCl2浓度均可显著提高水稻幼苗根CAT、APX、SOD等抗氧化酶活性,减少MDA、O2.-的生成,降低铝对水稻根伸长的抑制。[结论]CaCl2对水稻铝胁迫的拮抗作用明显。
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关 键 词: | 水稻 铝胁迫 钙 抗氧化酶 |
Effects of Calcium on Activity of Antioxidative Enzymes in Rice Seedlings under Aluminum Stress |
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Affiliation: | WU Zhi-quan et al(College of Life Science,South China Agricultural University,Guangzhou,Guangdong 510642) |
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Abstract: | [Objective] The amelioration effect of Ca in rice seedling under Al toxicity were investigated.[Method] An Al sensitive rice cultivar Xiangzhong xian No.2 was taken as the experimental material.Roots elongation,root cell lipid peroxidation productions and various antioxidative enzymes activity were detected with hydroponic experiment.[Result] Activity of superoxide dismutase(SOD),catalase(CAT) and ascorbate peroxidase(APX) increased while CaCl2 concentration was growing.On the other hand,the production of malonyaldehude(MDA) and O2·-which acted as the toxic factors were inhibited.So,the inhibition of rice root elongation under Al stress could be released by CaCl2,and exposure period also played important role.[Conclusion] CaCl2 could ameliorate Al toxicity in rice significantly. |
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Keywords: | Rice Aluminum stress Calcium Antioxidative enzymes |
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