Plant responses to stresses: Role of ascorbate peroxidase in the antioxidant protection.
Plant responses to stresses: Role of ascorbate peroxidase in the antioxidant protection.
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DOI：
10.1590/s1415-47572012000600016
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发表时间：
2012-12
影响因子：
2.1
通讯作者：
Margis-Pinheiro M
中科院分区：
文献类型：
--
作者：
Caverzan A;Passaia G;Rosa SB;Ribeiro CW;Lazzarotto F;Margis-Pinheiro M
当植物暴露在压力环境条件下时，活性氧（ROS）的产生增加，并可能对细胞造成重大损害。抗氧化防御，可以解毒活性氧，存在于植物中。抗坏血酸-谷胱甘肽循环是植物细胞中一个主要的过氧化氢解毒系统，其中抗坏血酸过氧化物酶（APX）在催化H2 O2转化为H2O中起着关键作用，抗坏血酸盐是该系统的电子供体。不同的APX亚型存在于不同的亚细胞区室中，如叶绿体、线粒体、过氧化物酶体和胞质溶胶。APX基因的表达受生物和非生物胁迫以及植物发育过程的调控。APX反应直接参与保护植物细胞免受不利环境条件的影响。此外，APX基因突变体植物的生长，生理和抗氧化代谢的变化，揭示了这些酶参与正常植物发育。
When plants are exposed to stressful environmental conditions, the production of Reactive Oxygen Species (ROS) increases and can cause significant damage to the cells. Antioxidant defenses, which can detoxify ROS, are present in plants. A major hydrogen peroxide detoxifying system in plant cells is the ascorbate-glutathione cycle, in which, ascorbate peroxidase (APX) enzymes play a key role catalyzing the conversion of H2O2 into H2O, using ascorbate as a specific electron donor. Different APX isoforms are present in distinct subcellular compartments, such as chloroplasts, mitochondria, peroxisome, and cytosol. The expression of APX genes is regulated in response to biotic and abiotic stresses as well as during plant development. The APX responses are directly involved in the protection of plant cells against adverse environmental conditions. Furthermore, mutant plants APX genes showed alterations in growth, physiology and antioxidant metabolism revealing those enzymes involvement in the normal plant development.
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影响因子：
6.5
作者：
De Leonardis, S;Dipierro, N;Dipierro, S
通讯作者：
Dipierro, S
影响因子：
6.5
作者：
Gomes-Junior, R. A.;Moldes, C. A.;Azevedo, R. A.
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影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
D'Arcy-Lameta, A;Ferrari-Iliou, R;Zuily-Fodil, Y
通讯作者：
Zuily-Fodil, Y
影响因子：
11.6
作者：
Davletova, S;Rizhsky, L;Mittler, R
通讯作者：
Mittler, R