Foyer, CH and Noctor, G (2016) Stress-triggered redox signalling: What’s in pROSpect? Plant, Cell and Environment, 39 (5). pp. 951-964. ISSN 0140-7791
Abstract
Reactive oxygen species (ROS) have a profound influence on almost every aspect of plant biology. Here, we emphasize the fundamental, intimate relationships between light-driven reductant formation, ROS, and oxidative stress, together with compartment-specific differences in redox buffering and the perspectives for their analysis. Calculations of approximate H₂O₂ concentrations in the peroxisomes are provided, and based on the likely values in other locations such as chloroplasts, we conclude that much of the H₂O₂ detected in conventional in vitro assays is likely to be extracellular. Within the context of scant information on ROS perception mechanisms, we consider current knowledge, including possible parallels with emerging information on oxygen sensing. Although ROS can sometimes be signals for cell death, we consider that an equally important role is to transmit information from metabolism to allow appropriate cellular responses to developmental and environmental changes. Our discussion speculates on novel sensing mechanisms by which this could happen and how ROS could be counted by the cell, possibly as a means of monitoring metabolic flux. Throughout, we place emphasis on the positive effects of ROS, predicting that in the coming decades they will increasingly be defined as hallmarks of viability within a changing and challenging environment.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2015 John Wiley & Sons Ltd. This is the peer reviewed version of the following article: Foyer, C. H., and Noctor, G. (2016) Stress-triggered redox signalling: what's in pROSpect?. Plant, Cell & Environment, 39: 951–964, which has been published in final form at http://dx.doi.org/10.1111/pce.12621. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | electron transport; hypoxia; oxidative stress; photosynthesis; reactive oxygen species; signalling; thiols |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Biological Sciences (Leeds) > School of Biology (Leeds) |
Funding Information: | Funder Grant number EU - European Union 311840 |
Depositing User: | Symplectic Publications |
Date Deposited: | 07 Aug 2015 15:00 |
Last Modified: | 21 Dec 2016 17:49 |
Published Version: | http://dx.doi.org/10.1111/pce.12621 |
Status: | Published |
Publisher: | Wiley |
Identification Number: | 10.1111/pce.12621 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:88813 |