Using lipidomics to reveal details of lipid accumulation in developing seeds from oilseed rape (Brassica napus L.)

A - Papers appearing in refereed journals

Haslam, R. P., Cazenave-Gassiot, A., Guschina, I.A., Wenk, M.R., Woodfield, H.K. and Harwood, J.L. 2018. Using lipidomics to reveal details of lipid accumulation in developing seeds from oilseed rape (Brassica napus L.). Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids. 1863 (3), pp. 339-348.

AuthorsHaslam, R. P., Cazenave-Gassiot, A., Guschina, I.A., Wenk, M.R., Woodfield, H.K. and Harwood, J.L.
Abstract

With dwindling available agricultural land, concurrent with increased demand for oil, there is much current interest in raising oil crop productivity. We have been addressing this issue by studying the regulation of oil accumulation in oilseed rape (Brassica napus L). As part of this research we have carried out a detailed lipidomic analysis of developing seeds.
The molecular species distribution in individual lipid classes revealed quite distinct patterns and showed where metabolic connections were important. As the seeds developed, the molecular species distributions changed, especially in the period of early (20 days after flowering, DAF) to mid phase (27DAF) of oil accumulation. The patterns of molecular species of diacylglycerol, phosphatidylcholine and acyl-CoAs were used to predict the possible relative contributions of diacylglycerol acyltransferase (DGAT) and phospholipid:diacylglycerol acyltransferase to triacylglycerol production. Our calculations suggest that DGAT may hold a more important role in influencing the molecular composition of TAG. Enzyme selectivity had an important influence on the final molecular species patterns.
Our data contribute significantly to our understanding of lipid accumulation in the world’s third most important oil crop.

KeywordsDeveloping oilseed rape; Brassica napus (L); lipidomics; lipid accumulation; regulation of synthesis
Year of Publication2018
JournalBiochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids
Journal citation1863 (3), pp. 339-348
Digital Object Identifier (DOI)doi:10.1016/j.bbalip.2017.12.010
Web address (URL)https://www.sciencedirect.com/science/article/pii/S1388198117302536
Open accessPublished as ‘gold’ (paid) open access
FunderBiotechnology and Biological Sciences Research Council
Funder project or codeTPM - Tailoring Plant Metabolism - Work package 1 (WP1) - High value lipids for health and industry
Publisher's version
Accepted author manuscript
Output statusPublished
Publication dates
Online22 Dec 2017
Publication process dates
Accepted19 Dec 2017
PublisherElsevier
ISSN1388-1981

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