Induction of Rice Cytosolic Ascorbate Peroxidase mRNA by Oxidative Stress; the Involvement of Hydrogen Peroxide in Oxidative Stress Signalling

Morita, Shigeto; Kaminaka, Hironori; Masumura, Takehiro; Tanaka, Kunisuke

doi:10.1093/oxfordjournals.pcp.a029557

Cited by 200 publications

(103 citation statements)

References 51 publications

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“…This isoenzyme of APX utilizes ascorbic acid as a specific electron donor [Shigeoka et al, 2002] and probably plays a key role in the defense system, through detoxification of H 2 O 2 as well as prevention of ascorbic acid peroxidation [Zheng and Van Huystee, 1992]. Cytosolic APX was significantly upregulated by H 2 O 2 and/or paraquat treatment in cell suspension culture of rice [Morita et al, 1999]. Addition of diethyldithiocarbamat (a SOD inhibitor) lowered the induction of APX, whereas inhibition of CAT or APX (resulting in H 2 O 2 accumulation) upregulated APX expression.…”

Section: Discussionmentioning

confidence: 99%

Effects of magnetic field on the antioxidant enzyme activities of suspension‐cultured tobacco cells

Sahebjamei

Abdolmaleki

Ghanati

2006

Bioelectromagnetics

124

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Effects of magnetic fields (MFs) on the activities of antioxidant enzymes of suspension-cultured tobacco cells were investigated. Compared with the control cells, exposure of the cells to static MF with the magnitudes of 10 and 30 mT for 5 days, 5 h each day, increased the activity of superoxide dismutase (SOD). In contrast, the activity of the catalase (CAT) and ascorbate peroxidase (APX) was decreased by MF, compared with those of the control cells. Level of lipid peroxidation was also increased by MF. It suggests that MF could deteriorate antioxidant defense system of plant cells.

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Section: Discussionmentioning

confidence: 99%

Effects of magnetic field on the antioxidant enzyme activities of suspension‐cultured tobacco cells

Sahebjamei

Abdolmaleki

Ghanati

2006

Bioelectromagnetics

124

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“…It is already known that H 2 O 2 can induce the expression of genes involved in antioxidant defense (Levine et al, 1994;Karpinski et al, 1999;Morita et al, 1999;Mullineaux et al, 2000). In addition, recent work has shown that H 2 O 2 induces the expression of genes required for peroxisome biogenesis (LopezHuertas et al, 2000); peroxisomes are organelles of direct importance for antioxidant defense.…”

mentioning

confidence: 99%

Regulation of the Arabidopsis Transcriptome by Oxidative Stress

Mackerness²,

et al. 2001

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Oxidative stress, resulting from an imbalance in the accumulation and removal of reactive oxygen species such as hydrogen peroxide (H2O2), is a challenge faced by all aerobic organisms. In plants, exposure to various abiotic and biotic stresses results in accumulation of H2O2 and oxidative stress. Increasing evidence indicates that H2O2functions as a stress signal in plants, mediating adaptive responses to various stresses. To analyze cellular responses to H2O2, we have undertaken a large-scale analysis of the Arabidopsis transcriptome during oxidative stress. Using cDNA microarray technology, we identified 175 non-redundant expressed sequence tags that are regulated by H2O2. Of these, 113 are induced and 62 are repressed by H2O2. A substantial proportion of these expressed sequence tags have predicted functions in cell rescue and defense processes. RNA-blot analyses of selected genes were used to verify the microarray data and extend them to demonstrate that other stresses such as wilting, UV irradiation, and elicitor challenge also induce the expression of many of these genes, both independently of, and, in some cases, via H2O2.

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“…Especially in higher plants, the photosynthetic electron transport system produces ROS when CO 2 fixation is limited by environmental stress conditions (Asada, 1999). In spite of their harmful effects, ROS are known as important signaling molecules for regulation of antioxidant defense (Karpinski et al, 1997;Morita et al, 1999), defense response to pathogens (Lamb and Dixon, 1997), and cell death (Jabs et al, 1996;Bethke and Jones, 2001). Therefore, the cellular ROS level is kept under tight control.…”

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confidence: 99%

A Novel cis-Element That Is Responsive to Oxidative Stress Regulates Three Antioxidant Defense Genes in Rice

et al. 2005

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All organisms have defense systems against oxidative stress that include multiple genes of antioxidant defense. These genes are induced by reactive oxygen species under condition of oxidative stress. In this study, we found that a 28-bp motif is conserved on the promoter regions of three antioxidant defense genes in rice (Oryza sativa): cytosolic superoxide dismutase (sodCc1), cytosolic thioredoxin (trxh), and glutaredoxin (grx). We demonstrated that the 28-bp sequence acts as a cis-element responsive to oxidative stress by transient expression assay and designated it as CORE (coordinate regulatory element for antioxidant defense). The CORE was activated by methyl viologen treatment and induced a 3.1-fold increase in expression of the reporter gene, but it did not respond to hydrogen peroxide. The expressions of the sodCc1, trxh, and grx genes were coordinately induced by methyl viologen, suggesting that multiple genes involved in antioxidant defense are controlled by a common regulatory mechanism via CORE. Application of the mitogen-activated protein kinase kinase inhibitor caused the constitutive induction of the sodCc1, trxh, and grx genes and the activation of CORE without methyl viologen treatment. These results indicate that a mitogen-activated protein kinase cascade is involved in the gene regulation mediated by CORE.

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Induction of Rice Cytosolic Ascorbate Peroxidase mRNA by Oxidative Stress; the Involvement of Hydrogen Peroxide in Oxidative Stress Signalling

Cited by 200 publications

References 51 publications

Effects of magnetic field on the antioxidant enzyme activities of suspension‐cultured tobacco cells

Effects of magnetic field on the antioxidant enzyme activities of suspension‐cultured tobacco cells

Regulation of the Arabidopsis Transcriptome by Oxidative Stress

A Novel cis-Element That Is Responsive to Oxidative Stress Regulates Three Antioxidant Defense Genes in Rice

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