Lipids in grain tissues of oat (Avena sativa): differences in content, time of deposition, and fatty acid composition.
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.
Banas
Antoni
A
Institute of Biology and Environmental Protection, AP, ul Arciszewskiego 22, 76-200, Slupsk, Poland.
Debski
Henryk
H
Banas
Walentyna
W
Heneen
Waheeb K
WK
Dahlqvist
Anders
A
Bafor
Maureen
M
Gummeson
Per-Olov
PO
Marttila
Salla
S
Ekman
Asa
A
Carlsson
Anders S
AS
Stymne
Sten
S
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
D005227:Fatty Acids