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Hydrogenases and the role of molecular hydrogen in plants

Russell, Grace; Zulfiqar, Faisal; Hancock, John T.

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Authors

Grace Russell

Faisal Zulfiqar

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John Hancock John.Hancock@uwe.ac.uk
Professor in Cell Signalling



Abstract

Molecular hydrogen (H2) has been suggested to be a beneficial treatment for a range of species, from humans to plants. Hydrogenases catalyze the reversible oxidation of H2, and are found in many organisms, including plants. One of the cellular effects of H2 is the selective removal of reactive oxygen species (ROS) and reactive nitrogen species (RNS), specifically hydroxyl radicals and peroxynitrite. Therefore, the function of hydrogenases and the action of H2 needs to be reviewed in the context of the signalling roles of a range of redox active compounds. Enzymes can be controlled by the covalent modification of thiol groups, and although motifs targeted by nitric oxide (NO) can be predicted in hydrogenases sequences it is likely that the metal prosthetic groups are the target of inhibition. Here, a selection of hydrogenases, and the possibility of their control by molecules involved in redox signalling are investigated using a bioinformatics approach. Methods of treating plants with H2 along with the role of H2 in plants is also briefly reviewed. It is clear that studies report significant effects of H2 on plants, improving growth and stress responses, and therefore future work needs to focus on the molecular mechanisms involved.

Citation

Russell, G., Zulfiqar, F., & Hancock, J. T. (2020). Hydrogenases and the role of molecular hydrogen in plants. Plants, 9(9), 1-15. https://doi.org/10.3390/plants9091136

Journal Article Type Article
Acceptance Date Aug 31, 2020
Online Publication Date Sep 2, 2020
Publication Date Sep 2, 2020
Deposit Date Aug 31, 2020
Publicly Available Date Mar 29, 2024
Journal Plants
Electronic ISSN 2223-7747
Publisher MDPI
Peer Reviewed Peer Reviewed
Volume 9
Issue 9
Article Number 1136
Pages 1-15
DOI https://doi.org/10.3390/plants9091136
Keywords Antioxidants; Hydrogenases; Hydrogen Rich Water; Molecular Hydrogen; Nitric oxide; Reactive Oxygen Species; Stress Responses
Public URL https://uwe-repository.worktribe.com/output/6638990

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