A1 Refereed original research article in a scientific journal
Coordinate changes in gene expression and triacylglycerol composition in the developing seeds of oilseed rape (Brassica napus) and turnip rape (Brassica rapa)
Authors: Vuorinen A.L., Kalpio M., Linderborg K.L., Kortesniemi M., Lehto K., Niemi, J., Yang, B., Kallio H.P.
Publisher: ELSEVIER SCI LTD
Publication year: 2014
Journal: Food Chemistry
Journal name in source: FOOD CHEMISTRY
Journal acronym: FOOD CHEM
Volume: 145
First page : 664
Last page: 673
Number of pages: 10
ISSN: 0308-8146
DOI: https://doi.org/10.1016/j.foodchem.2013.08.108
Abstract
Crop production for vegetable oil in the northern latitudes utilises oilseed rape (Brassica napus subsp.
oleifera) and turnip rape (B. rapa subsp. oleifera), having similar oil compositions. The oil consists mostly
of triacylglycerols, which are synthesised during seed development. In this study, we characterised the oil
composition and the expression levels of genes involved in triacylglycerol biosynthesis in the developing
seeds in optimal, low temperature (15 C) and short day (12-h day length) conditions. Gene expression
levels of several genes were altered during seed development. Low temperature and short day treatments
increased the level of 9,12,15-octadecatrienoic acid (18:3n3) in turnip rape and short day treatment
decreased the total oil content in both species. This study gives a novel view on seed oil biosynthesis
under different growth conditions, bringing together gene expression levels of the triacylglycerol biosynthesis
pathway and oil composition over a time series in two related oilseed species.
Crop production for vegetable oil in the northern latitudes utilises oilseed rape (Brassica napus subsp.
oleifera) and turnip rape (B. rapa subsp. oleifera), having similar oil compositions. The oil consists mostly
of triacylglycerols, which are synthesised during seed development. In this study, we characterised the oil
composition and the expression levels of genes involved in triacylglycerol biosynthesis in the developing
seeds in optimal, low temperature (15 C) and short day (12-h day length) conditions. Gene expression
levels of several genes were altered during seed development. Low temperature and short day treatments
increased the level of 9,12,15-octadecatrienoic acid (18:3n3) in turnip rape and short day treatment
decreased the total oil content in both species. This study gives a novel view on seed oil biosynthesis
under different growth conditions, bringing together gene expression levels of the triacylglycerol biosynthesis
pathway and oil composition over a time series in two related oilseed species.
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