Desel Christine, Krupinska Karin
Institute of Botany, Christian-Albrechts-University of Kiel, Olshausenstr. 40, 24098 Kiel, Germany.
J Plant Physiol. 2005 Jul;162(7):771-6. doi: 10.1016/j.jplph.2005.04.008.
Plant seeds and fruits are the main source for tocochromanols (tocopherols and tocotrienols) collectively known as Vitamin E in human nutrition. Seeds are particularly rich in gamma-tocopherol. The reason for the abundance of gamma-tocopherol in seeds is not yet clear. We analysed the influence of endogenous gamma-tocopherols on early development of seedlings from various barley cultivars. For this purpose progression of seedling development was monitored by the mean root length 48 h after imbibition. Our observations suggest that endogenous gamma-tocopherol has a negative impact on seedling development by controlling germination and postgermination events. We propose that gamma-tocopherol exerts its influence on seedling development by controlling the content of nitric oxide (NO) in germinating seeds.
植物种子和果实是生育三烯酚（生育酚和生育三烯酚）的主要来源，在人类营养中统称为维生素E。种子中γ-生育酚含量尤其丰富。种子中γ-生育酚含量丰富的原因尚不清楚。我们分析了内源性γ-生育酚对不同大麦品种幼苗早期发育的影响。为此，通过吸胀48小时后的平均根长来监测幼苗发育进程。我们的观察结果表明，内源性γ-生育酚通过控制发芽和发芽后事件对幼苗发育产生负面影响。我们认为，γ-生育酚通过控制发芽种子中一氧化氮（NO）的含量对幼苗发育产生影响。
