Lipids in grain tissues of oat (Avena sativa):: differences in content, time of deposition, and fatty acid composition
Lipids in grain tissues of oat (Avena sativa):: differences in content, time of deposition, and fatty acid composition
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DOI：
10.1093/jxb/erm125
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发表时间：
2007-01-01
影响因子：
6.9
通讯作者：
Stymne, Sten
中科院分区：
文献类型：
--
作者：
Banas, Antoni;Debski, Henryk;Stymne, Sten
燕麦 (Avena sativa) 与其他谷物相比很不寻常，因为有些品种的含油量高达 18%。使用薄层色谱和气相色谱以及光学和电子显微镜对品种 Freja（6% 油）和 Matilda（10% 油）种子发育过程中谷物不同部分的脂质含量和脂肪酸组成进行了表征。大多数脂质（86-90%）存在于胚乳中。 95% 的 cv. 含油量较高。玛蒂尔达与简历的比较。 Freja是由于胚乳的含油量增加所致。高达 84% 的脂质在种子发育的前半段沉积，此时种子仍呈绿色，胚乳呈乳白色。显微镜研究表明，虽然胚和盾片的油体在籽粒成熟时仍然包含离散的形状，但胚乳的油体在成熟时融合并形成油污。
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.