Structure and Distribution of Cerebroside Containing Unsaturated Hydroxy Fatty Acids in Plant Leaves
Structure and Distribution of Cerebroside Containing Unsaturated Hydroxy Fatty Acids in Plant Leaves
复制标题
植物叶片中不饱和羟基脂肪酸脑苷脂的结构与分布
DOI：
10.1271/bbb.59.1309
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
S. Ito
中科院分区：
文献类型：
--
作者：
H. Imai;M. Ohnishi;M. Kinoshita;M. Kojima;S. Ito
小麦叶脑苷单不饱和2-羟基脂肪酸组成为n-9系列的Z型，其碳数分别为22、24、25和26。从脑苷脂的液-质联用中，确认了不饱和羟基脂肪酸与4-羟基鞘氨醇的唯一结合，其中主要的神经酰胺部分是2‘-hydroxy-16’-Z-tetracosenoyl-4-hydroxy-8-sphingenine.。分析了禾本科植物叶片脑苷脂中不饱和羟基脂肪酸的分布。在抗寒黑麦和燕麦以及小麦的叶片中检测到含有不饱和羟基脂肪酸的脑苷类物质。然而，在水稻和玉米等对冷敏感的植物的叶片中没有检测到这些脑苷类物质。在所分析的21种植物中，只有3种抗寒植物(西兰花、菊花和蒲公英)含有不饱和羟基脂肪酸。值得注意的是，所分析的冷敏植物中没有一种含有大量含有这些脂肪酸的脑苷类物质。
The component monounsaturated 2-hydroxy fatty acids with carbon numbers of 22, 24, 25, and 26 in wheat leaf cerebroside were found to be Z-forms of the n-9 series. From liquid chromatography-mass spectrometry of the cerebroside, an exclusive combination of the unsaturated hydroxy fatty acids with 4-hydroxysphingenine was confirmed, one of the principal ceramide moieties being 2'-hydroxy-16'-Z-tetracosenoyl-4-hydroxy-8-sphingenine. The distribution of the unsaturated hydroxy fatty acids in the cerebrosides from the leaves of gramineous plants was analyzed. Cerebroside species having unsaturated hydroxy fatty acids were detected in the leaves of chilling-resistant rye and oats as well as wheat. These cerebroside species, however, were not detected in the leaves of chilling-sensitive plants such as rice and maize. The unsaturated hydroxy fatty acids were found only in 3 species of chilling-resistant plants (broccoli, chrysanthemum, and dandelion) among the 21 plant species analyzed. It was noteworthy that no species of chilling-sensitive plants analyzed included significant amounts of cerebroside species containing these fatty acids.