Influences of magnesium deficiency and cerium on antioxidant system of spinach chloroplasts
Influences of magnesium deficiency and cerium on antioxidant system of spinach chloroplasts
复制标题
缺镁和缺铈对菠菜叶绿体抗氧化系统的影响
DOI：
10.1007/s10534-009-9246-z
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发表时间：
2009-05
期刊：
影响因子：
3.5
通讯作者：
Yin, Sitao
中科院分区：
文献类型：
--
作者：
Ji, Zhe;Liu, Chao;Ze, Yuguan;Hong, Fashui;Luo, Luyang;Yin, Sitao
缺镁条件下施加到菠菜文化引起的氧化应激状态在菠菜叶绿体监测活性氧（ROS）的积累增加。在缺镁培养基中生长的菠菜叶绿体脂质过氧化物的增强表明，通过分析超氧化物歧化酶、过氧化氢酶、抗坏血酸过氧化物酶、愈创木酚过氧化物酶和谷胱甘肽的活性来测量，抗氧化防御机制的减少会激活氧化攻击。还原酶，以及类胡萝卜素和谷胱甘肽含量等抗氧化剂。缺镁胁迫下，菠菜叶绿体抗氧化反应减弱，导致菠菜植株重量显著下降，老叶失绿。而缺镁条件下，铈处理降低了丙二醛和活性氧的含量，提高了菠菜抗氧化防御系统的活性，促进了菠菜生长。实验结果表明，铈可以部分替代镁，提高菠菜叶绿体在缺镁条件下的抗氧化胁迫能力，但其机制有待进一步研究。
Magnesium-deficiency conditions applied to spinach cultures caused an oxidative stress status in spinach chloroplast monitored by an increase in reactive oxygen species (ROS) accumulation. The enhancement of lipids peroxide of spinach chloroplast grown in magnesium-deficiency media suggested an oxidative attack that was activated by a reduction of antioxidative defense mechanism measured by analysing the activities of superoxide dismutase, catalase, ascorbate peroxidase, guaiacol peroxidase, and glutathione reductase, as well as antioxidants such as carotenoids and glutathione content. As the antioxidative response of chloroplast was reduced in spinach grown in magnesium-deficiency media, it caused a significant reduction of spinach plant weight, old leaves turning chlorosis. However, cerium treatment grown in magnesium-deficiency conditions decreased the malondialdehyde and ROS, and increased activities of the antioxidative defense system, and improved spinach growth. Together, the experimental study implied that cerium could partly substitute for magnesium and increase the oxidative stress-resistance of spinach chloroplast grown in magnesium-deficiency conditions, but the mechanisms need further study.
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影响因子：
5.4
作者：
H. Fa-shui;W. Ling;Tao Ye
通讯作者：
H. Fa-shui;W. Ling;Tao Ye
DOI：
10.1016/0005-2728(69)90045-0
发表时间：
1969-10
期刊：
Biochimica et biophysica acta
影响因子：
--
作者：
Norio Murata
通讯作者：
Norio Murata
DOI：
--
发表时间：
2004
期刊：
--
影响因子：
--
作者：
刘超;洪法水;王玲;郑蕾
通讯作者：
刘超;洪法水;王玲;郑蕾
影响因子：
9.4
作者：
A. Polle;T. Otter;B. Mehne-Jakobs
通讯作者：
A. Polle;T. Otter;B. Mehne-Jakobs
影响因子：
3.2
作者：
R. Reuveni;M. Shimoni;Z. Karchi;J. Kuc
通讯作者：
R. Reuveni;M. Shimoni;Z. Karchi;J. Kuc