Wingler, A., Lea, P.J., Quick, W.P. et al. (1 more author) (2000) Photorespiration: metabolic pathways and their role in stress protection. Philosophical Transactions Of The Royal Society Of London Series B - Biological Sciences, 355 (1402). pp. 1517-1529. ISSN 0962-8436
Abstract
Photorespiration results from the oxygenase reaction catalysed by ribulose-1,5-bisphosphate carboxylase/ oxygenase. In this reaction glycollate-2-phosphate is produced and subsequently metabolized in the photorespiratory pathway to form the Calvin cycle intermediate glycerate-3-phosphate. During this metabolic process, CO2 and NH3 are produced and ATP and reducing equivalents are consumed, thus making photorespiration a wasteful process. However, precisely because of this ine¤ciency, photorespiration could serve as an energy sink preventing the overreduction of the photosynthetic electron transport chain and photoinhibition, especially under stress conditions that lead to reduced rates of photosynthetic CO2 assimilation. Furthermore, photorespiration provides metabolites for other metabolic processes, e.g. glycine for the synthesis of glutathione, which is also involved in stress protection. In this review, we describe the use of photorespiratory mutants to study the control and regulation of photorespiratory pathways. In addition, we discuss the possible role of photorespiration under stress conditions, such as drought, high salt concentrations and high light intensities encountered by alpine plants.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2000 The Royal Society |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > School of Biosciences (Sheffield) > Department of Animal and Plant Sciences (Sheffield) The University of Sheffield > University of Sheffield Research Centres and Institutes > Robert Hill Institute (Sheffield) |
Depositing User: | Repository Officer |
Date Deposited: | 22 Oct 2004 |
Last Modified: | 04 Jun 2014 09:02 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1098/rstb.2000.0712 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:164 |