植物生长与代谢的相关研究II. 光照和赤霉素对生菜幼苗蛋白质及可溶性氮变化的影响
Correlative Studies on Plant Growth and Metabolism II. Effect of Light and of Gibberellic Acid on the Changes in Protein and Soluble Nitrogen in Lettuce Seedlings.
作者信息
Rai V K, Laloraya M M
机构信息
Botany Department, Allahabad University, Allahabad, India.
出版信息
Plant Physiol. 1967 Mar;42(3):440-4. doi: 10.1104/pp.42.3.440.
Protein and soluble nitrogen distribution in different parts of lettuce seedling was studied in light and darkness and in presence and absence of gibberellic acid. In dark, applied gibberellic acid failed to show any marked effect on the nitrogen changes in lettuce. Light inhibits translocation of nitrogen reserves from the cotyledons. Gibberellic acid reverses the light inhibition of longitudinal growth but has no effect on the inhibition of translocation from the cotyledons. Light grown, gibberellic acid treated seedlings exhibit a pattern of protein and soluble-N which is characteristic of the dark grown seedlings. Thus gibberellic acid not only causes morphological reversal of light inhibition but also shifts the nitrogen metabolism of light grown plants, close to that of plants grown in darkness.
研究了在光照和黑暗条件下，以及在有和没有赤霉素的情况下，生菜幼苗不同部位的蛋白质和可溶性氮分布情况。在黑暗中，施用赤霉素对生菜的氮变化未显示出任何显著影响。光照会抑制氮储备从子叶的转运。赤霉素可逆转光照对纵向生长的抑制作用，但对抑制子叶中氮的转运没有影响。经赤霉素处理的光照下生长的幼苗呈现出一种蛋白质和可溶性氮的分布模式，这是黑暗中生长的幼苗所特有的。因此，赤霉素不仅能导致光照抑制的形态学逆转，还能使光照下生长的植物的氮代谢向接近黑暗中生长的植物的氮代谢转变。
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