title: 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.
authors.affiliation: Institute of Biology and Environmental Protection, AP, ul Arciszewskiego 22, 76-200, Slupsk, Poland.
authors.forename: Antoni
authors.initials: A
authors.lastname: Banas
authors.forename: Henryk
authors.initials: H
authors.lastname: Debski
authors.forename: Walentyna
authors.initials: W
authors.lastname: Banas
authors.forename: Waheeb K
authors.initials: WK
authors.lastname: Heneen
authors.forename: Anders
authors.initials: A
authors.lastname: Dahlqvist
authors.forename: Maureen
authors.initials: M
authors.lastname: Bafor
authors.forename: Per-Olov
authors.initials: PO
authors.lastname: Gummeson
authors.forename: Salla
authors.initials: S
authors.lastname: Marttila
authors.forename: Asa
authors.initials: A
authors.lastname: Ekman
authors.forename: Anders S
authors.initials: AS
authors.lastname: Carlsson
authors.forename: Sten
authors.initials: S
authors.lastname: Stymne
mesh_terms: D018554:Avena / Q000196:embryology* / Q000378:metabolism / Q000648:ultrastructure; D005227:Fatty Acids / Q000378:metabolism*; D050356:Lipid Metabolism; D012639:Seeds / Q000254:growth & development / Q000378:metabolism* / Q000648:ultrastructure
chemical_list: D005227:Fatty Acids