Reactive Oxygen Species Signaling in Plants

Pitzschke, Andrea; Forzani, Céline; Hirt, Heribert

doi:10.1089/ars.2006.8.1757

Cited by 312 publications

(174 citation statements)

References 73 publications

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“…In Arabidopsis, the accumulation of the zinc finger protein ZAT10 promotes the expression of ascorbate POD (APX2; Mittler et al, 2006), while ZAT12 is required for APX1 expression (Rizhsky et al, 2004). APX is one of the most important ROS-scavenging enzymes in plants (Pitzschke et al, 2006). Pro accumulation is a common plant response to a wide range of biotic and abiotic stresses (Verbruggen and Hermans, 2008).…”

Section: Tachp Enhances Salinity Tolerance By Acting On Antioxidationmentioning

confidence: 99%

TaCHP: A Wheat Zinc Finger Protein Gene Down-Regulated by Abscisic Acid and Salinity Stress Plays a Positive Role in Stress Tolerance

Zhao

et al. 2010

Plant Physiology

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The plant response to abiotic stresses involves both abscisic acid (ABA)-dependent and ABA-independent signaling pathways. Here we describe TaCHP, a CHP-rich (for cysteine, histidine, and proline rich) zinc finger protein family gene extracted from bread wheat (Triticum aestivum), is differentially expressed during abiotic stress between the salinity-sensitive cultivar Jinan 177 and its tolerant somatic hybrid introgression cultivar Shanrong No.3. TaCHP expressed in the roots of seedlings at the three-leaf stage, and the transcript localized within the cells of the root tip cortex and meristem. TaCHP transcript abundance was higher in Shanrong No.3 than in Jinan 177, but was reduced by the imposition of salinity or drought stress, as well as by the exogenous supply of ABA. When JN17, a salinity hypersensitive wheat cultivar, was engineered to overexpress TaCHP, its performance in the face of salinity stress was improved, and the ectopic expression of TaCHP in Arabidopsis (Arabidopsis thaliana) also improved the ability of salt tolerance. The expression level of a number of stress reporter genes (AtCBF3, AtDREB2A, AtABI2, and AtABI1) was raised in the transgenic lines in the presence of salinity stress, while that of AtMYB15, AtABA2, and AtAAO3 was reduced in its absence. The presence in the upstream region of the TaCHP open reading frame of the cis-elements ABRE, MYBRS, and MYCRS suggests that it is a component of the ABA-dependent and -independent signaling pathways involved in the plant response to abiotic stress. We suggest that TaCHP enhances stress tolerance via the promotion of CBF3 and DREB2A expression.

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Section: Tachp Enhances Salinity Tolerance By Acting On Antioxidationmentioning

confidence: 99%

TaCHP: A Wheat Zinc Finger Protein Gene Down-Regulated by Abscisic Acid and Salinity Stress Plays a Positive Role in Stress Tolerance

Zhao

et al. 2010

Plant Physiology

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“…Compelling data supporting the coexistence of redox regulatory pathways and ROS formation in chloroplasts (Apel and Hirt, 2004;Pitzschke et al, 2006;Miller et al, 2008;Foyer and Noctor, 2009) promoted the notion that ROS might be used for regulatory protein oxidation (Apel and Hirt, 2004;Møller et al, 2007). Studies of bacteria, plants, and animals revealed that ROS signals could be perceived directly by specific sensors (Storz et al, 1990;D'Autréaux and Toledano, 2007) or by the use of antioxidative enzymes, such as peroxiredoxins (Prxs) (D'Autréaux and Toledano, 2007;Fourquet et al, 2008;Dietz, 2011;Fomenko et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

A Chloroplast Light-Regulated Oxidative Sensor for Moderate Light Intensity in Arabidopsis

et al. 2012

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The transition from dark to light involves marked changes in the redox reactions of photosynthetic electron transport and in chloroplast stromal enzyme activity even under mild light and growth conditions. Thus, it is not surprising that redox regulation is used to dynamically adjust and coordinate the stromal and thylakoid compartments. While oxidation of regulatory proteins is necessary for the regulation, the identity and the mechanism of action of the oxidizing pathway are still unresolved. Here, we studied the oxidation of a thylakoid-associated atypical thioredoxin-type protein, ACHT1, in the Arabidopsis thaliana chloroplast. We found that after a brief period of net reduction in plants illuminated with moderate light intensity, a significant oxidation reaction of ACHT1 arises and counterbalances its reduction. Interestingly, ACHT1 oxidation is driven by 2-Cys peroxiredoxin (Prx), which in turn eliminates peroxides. The ACHT1 and 2-Cys Prx reaction characteristics in plants further indicated that ACHT1 oxidation is linked with changes in the photosynthetic production of peroxides. Our findings that plants with altered redox poise of the ACHT1 and 2-Cys Prx pathway show higher nonphotochemical quenching and lower photosynthetic electron transport infer a feedback regulatory role for this pathway.

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“…While relatively little is known about the primary receptors that sense these stresses, several downstream signaling cascades have been identified and studied in detail. Stresses may lead to an increase in reactive oxygen species (ROS), cytosolic Ca 2+ or inositol phosphates, which in turn can induce signaling events further downstream (Allen et al, 2000;Xiong et al, 2002;Apel and Hirt, 2004;Gao et al, 2004;Pitzschke et al, 2006). Transmission of these signals includes post-translational modifications such as phosphorylation, ubiquitination and sumoylation of important regulatory factors (Halfter et al, 2000;Dong et al, 2006;Miura et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Stress‐induced changes in the Arabidopsis thaliana transcriptome analyzed using whole‐genome tiling arrays

et al. 2009

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SUMMARYThe responses of plants to abiotic stresses are accompanied by massive changes in transcriptome composition. To provide a comprehensive view of stress-induced changes in the Arabidopsis thaliana transcriptome, we have used whole-genome tiling arrays to analyze the effects of salt, osmotic, cold and heat stress as well as application of the hormone abscisic acid (ABA), an important mediator of stress responses. Among annotated genes in the reference strain Columbia we have found many stress-responsive genes, including several transcription factor genes as well as pseudogenes and transposons that have been missed in previous analyses with standard expression arrays. In addition, we report hundreds of newly identified, stress-induced transcribed regions. These often overlap with known, annotated genes. The results are accessible through the Arabidopsis thaliana Tiling Array Express (At-TAX) homepage, which provides convenient tools for displaying expression values of annotated genes, as well as visualization of unannotated transcribed regions along each chromosome.

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Reactive Oxygen Species Signaling in Plants

Cited by 312 publications

References 73 publications

TaCHP: A Wheat Zinc Finger Protein Gene Down-Regulated by Abscisic Acid and Salinity Stress Plays a Positive Role in Stress Tolerance

TaCHP: A Wheat Zinc Finger Protein Gene Down-Regulated by Abscisic Acid and Salinity Stress Plays a Positive Role in Stress Tolerance

A Chloroplast Light-Regulated Oxidative Sensor for Moderate Light Intensity in Arabidopsis

Stress‐induced changes in the Arabidopsis thaliana transcriptome analyzed using whole‐genome tiling arrays

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