Brown, L-A, Larson, TR, Graham, IA et al. (4 more authors) (2013) An inhibitor of oil body mobilization in Arabidopsis. New Phytologist, 200 (3). 641 - 649. ISSN 0028-646X
Abstract
Fatty acid β-oxidation is an essential process in many aspects of plant development, and storage oil in the form of triacylglycerol (TAG) is an important food source for humans and animals, for biofuel and for industrial feedstocks. In this study we characterize the effects of a small molecule, diphenyl methylphosphonate, on oil mobilization in Arabidopsis thaliana. Confocal laser scanning microscopy, transmission electron microscopy and quantitative lipid profiling were used to examine the effects of diphenyl methylphosphonate treatment on seedlings. Diphenyl methylphosphonate causes peroxisome clustering around oil bodies but does not affect morphology of other cellular organelles. We show that this molecule blocks the breakdown of pre-existing oil bodies resulting in retention of TAG and accumulation of acyl CoAs. The biochemical and phenotypic effects are consistent with a block in the early part of the β-oxidation pathway. Diphenyl methylphosphonate appears to be a fairly specific inhibitor of TAG mobilization in plants and whilst further work is required to identify the molecular target of the compound it should prove a useful tool to interrogate and manipulate these pathways in a controlled and reproducible manner.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2013 The Authors © 2013 New Phytologist Trust This is an author produced version of a paper published in New Phytologist. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Arabidiopsis; β-oxidation; Inhibitor; Lipid metabolism; Oil body; Peroxisome; Triacylglycerol |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of York > Faculty of Sciences (York) > Biology (York) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemistry (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 09 Oct 2014 13:16 |
Last Modified: | 16 Nov 2016 01:59 |
Status: | Published |
Publisher: | Wiley |
Identification Number: | 10.1111/nph.12467 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:77541 |