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Open AccessReview

Hydrogen Peroxide: Its Role in Plant Biology and Crosstalk with Signalling Networks

1
Department of Molecular Biology and Radiobiology, Faculty of AgriSciences Mendel University in Brno, 613 00 Brno, Czech Republic
2
Phytophthora Research Centre, Faculty of AgriSciences, Mendel University in Brno, 613 00 Brno, Czech Republic
3
CEITEC—Central European Institute of Technology, Faculty of AgriSciences Mendel University in Brno, 613 00 Brno, Czech Republic
4
Brno Ph.D. Talent, South Moravian Centre for International Mobility, 602 00 Brno, Czech Republic
5
Institute of Biophysics AS CR, 613 00 Brno, Czech Republic
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Int. J. Mol. Sci. 2018, 19(9), 2812; https://doi.org/10.3390/ijms19092812
Received: 24 July 2018 / Revised: 13 September 2018 / Accepted: 15 September 2018 / Published: 18 September 2018
Hydrogen peroxide (H2O2) is steadily gaining more attention in the field of molecular biology research. It is a major REDOX (reduction–oxidation reaction) metabolite and at high concentrations induces oxidative damage to biomolecules, which can culminate in cell death. However, at concentrations in the low nanomolar range, H2O2 acts as a signalling molecule and in many aspects, resembles phytohormones. Though its signalling network in plants is much less well characterized than are those of its counterparts in yeast or mammals, accumulating evidence indicates that the role of H2O2-mediated signalling in plant cells is possibly even more indispensable. In this review, we summarize hydrogen peroxide metabolism in plants, the sources and sinks of this compound and its transport via peroxiporins. We outline H2O2 perception, its direct and indirect effects and known targets in the transcriptional machinery. We focus on the role of H2O2 in plant growth and development and discuss the crosstalk between it and phytohormones. In addition to a literature review, we performed a meta-analysis of available transcriptomics data which provided further evidence for crosstalk between H2O2 and light, nutrient signalling, temperature stress, drought stress and hormonal pathways. View Full-Text
Keywords: H2O2; plant hormone; signalling; growth and development; stress H2O2; plant hormone; signalling; growth and development; stress
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MDPI and ACS Style

Černý, M.; Habánová, H.; Berka, M.; Luklová, M.; Brzobohatý, B. Hydrogen Peroxide: Its Role in Plant Biology and Crosstalk with Signalling Networks. Int. J. Mol. Sci. 2018, 19, 2812.

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