Lipids in grain tissues of oat (Avena sativa): differences in content, time of deposition, and fatty acid composition

Abstract

Oat (Avena sativa) is unusual in comparison with other cereals since there are varieties with up to 18% oil content. The lipid content and fatty acid composition in different parts of the grain during seed development were characterized in cultivars Freja (6% oil) and Matilda (10% oil), using thin-layer and gas chromatography, and light and electron microscopy. The majority of lipids (86-90%) were found in the endosperm. Ninety-five per cent of the higher oil content of cv. Matilda compared with cv. Freja was due to increased oil content of the endosperm. Up to 84% of the lipids were deposited during the first half of seed development, when seeds where still green with a milky endosperm. Microscopy studies revealed that whereas oil bodies of the embryo and scutellum still contained a discrete shape upon grain maturation, oil bodies of the endosperms fused upon maturation and formed smears of oil

Published in

Journal of Experimental Botany
2007, volume: 58, number: 10, pages: 2463-2470
Publisher: OXFORD UNIV PRESS

SLU Authors

• Marttila, Salla

  • Department of Plant Protection Biology, Swedish University of Agricultural Sciences
    

• Grimberg, Åsa

  • Department of Plant Breeding, Swedish University of Agricultural Sciences
    

• Carlsson, Anders

  • Department of Plant Breeding, Swedish University of Agricultural Sciences
    

• Stymne, Sten

  • Department of Plant Breeding, Swedish University of Agricultural Sciences
    

• Gummeson, Per Olof

• Heneen, Waheeb

  • Department of Crop Science, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Agricultural Science

Publication identifier

• DOI: https://doi.org/10.1093/jxb/erm125

Permanent link to this page (URI)

https://res.slu.se/id/publ/17424