未成熟大豆子叶中脂质分子种类的代谢研究。
Studies on the metabolism of lipid molecular species in immature soybean cotyledons.
作者信息
Wilson R F, Rinne R W
机构信息
United States Department of Agriculture, Agricultural Research Service, Department of Agronomy, University of Illinois at Champaign-Urbana, Urbana, Illinois 61801.
出版信息
Plant Physiol. 1978 Jun;61(6):1014-6. doi: 10.1104/pp.61.6.1014.
Metabolism of lipid molecular species in soybean cotyledons (Glycine max [L.] Merr. var. "Harosoy 63") was determined from incorporation studies with radioactive acetate and glycerol. Lipid synthetic activity was highest in immature cotyledons at 30 days after flowering. Distinct differences in labeling patterns of molecular species within lipid classes demonstrated that selective utilization of diglyceride intermediates occurred in complex lipid biosynthesis in soybean. The phospholipid molecular species in this tissue that displayed the highest turnover rates had the following acyl combinations: saturate-linoleic and dioleic in phosphatidic acid; saturate-oleic in phosphatidylinositol and phosphatidylethanolamine; dioleic in phosphatidylcholine; oleic-dilinoleic in N-acylphosphatidylethanolamine. Saturate-dilinoleic, oleic-dilinoleic, trioleic, and trilinoleic structures were rapidly synthesized species of triglyceride in immature soybean cotyledons.
通过放射性乙酸盐和甘油掺入研究，测定了大豆子叶（Glycine max [L.] Merr. var. “Harosoy 63”）中脂质分子种类的代谢。脂质合成活性在开花后30天的未成熟子叶中最高。脂质类别中分子种类标记模式的明显差异表明，在大豆复合脂质生物合成中发生了甘油二酯中间体的选择性利用。该组织中周转率最高的磷脂分子种类具有以下酰基组合：磷脂酸中的饱和-亚油酸和二油酸；磷脂酰肌醇和磷脂酰乙醇胺中的饱和-油酸；磷脂酰胆碱中的二油酸；N-酰基磷脂酰乙醇胺中的油酸-二亚油酸。饱和-二亚油酸、油酸-二亚油酸、三亚油酸和三亚麻酸结构是未成熟大豆子叶中快速合成的甘油三酯种类。
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