トウモロコシの各部位中のスフィンゴ脂質の構成分と分子種

抄録

The components and molecular species of sphingolipids from maize organs (seeds, leaves, roots, stems, pollen and styles) were investigated. The major sphingolipid classes were commonly cerebrosides and ceramides, the former being predominant except in the case of seeds. The representative molecular species of cerebrosides were found to be 1-O-glucosyl-N-2'hydroxyarachidoyl-sphingadienine, 1-O-glucosyl-N-2'-hydroxylignoceroyl-4-hydroxysphingenine, 1-O-glucosyl-N-2'-hydroxybehenoyl-4-hydroxysphingenine and the like. Although cerebroside composition was similar for leaves and stems, maize cerebrosides generally showed characteristic patterns in molecular species compositions among the organs. Pollen cerebroside in particular was unusual; the species having sphingadienine and 2-hydroxyarachidic acid constituted half the total. The predominant sphingoid component in their crude ceramide fractions from the maize organs was usually 4-hydroxysphinganine, whereas the principal fatty acid component was 2-hydroxylignoceric acid, but was 2-hydroxyarachidic acid for pollen.