Lipids in grain tissues of oat (Avena sativa): differences in content, time of deposition, and fatty acid composition.
J Exp Bot
; 58(10): 2463-70, 2007.
Article
en En
| MEDLINE
| ID: mdl-17586606
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.
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Banco de datos:
MEDLINE
Asunto principal:
Semillas
/
Avena
/
Metabolismo de los Lípidos
/
Ácidos Grasos
Idioma:
En
Año:
2007
Tipo del documento:
Article