Abstract
Sterols of male and female flowers of Cucumis sativus L. were similar in composition. The principal compound was 24ξ-ethyl-5α-cholesta-7,22-dien-3β-ol. Five other 5α-Δ7 were detected: 24ξ-methyl-7-ene, 24ξ-ethyl-7-ene, 24-ethyl-7,24(28)Z-diene, 24ξ-ethyl-7,25-diene and 24ξ-ethyl-7,22,25-triene. Small amounts of Δ5 (cholesterol, 24ξ-methylcholesterol and 24ξ-ethylcholesterol) were detected. The possible significance of these sterols is discussed.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Abbreviations
- GLC:
-
gas-liquid chromatography
- GC-MS:
-
combined gas chromatography-mass spectrometry
References
Brandt, R.D., Benveniste, P.: Isolation and identification of sterols from subcellular fractions of bean leaves. Biochim. Biophys. Acta 282, 85–92 (1972)
Clayton, R.B., Bloch, K.: Sterol utilization in the hide Beetle, Dermestes vulpinus. J. biol. Chem. 238, 586 (1963)
Elliott, C.G., Hendrie, M.R., Knights, B.A.: The sterol requirement of Phytophthora cactorum. J. gen. Microbiol. 42, 425–435 (1966)
Elliott, C.G.: Competition and synergism between cholesterol and cholestanol in oospore formation in Phythophthora cactorum. J. gen. Microbiol. 51, 137–143 (1968)
Elliott, C.G.: Sterols and the production of oospores by Phytophthora cactorum. J. gen. Microbiol. 72, 321–327 (1972)
Elliott, C.G., Sansome, E.: Sterols and meiosis in Phytophtora. J. gen. Microbiol. 98, 141–145 (1977)
Hendrix, J.W.: Sterols in Growth and Reproduction of fungi. Ann. Rev. Phytopathol. 8, 111–130 (1970)
Kemp, R.J., Mercer, E.I.: Studies on the sterols and sterol esters of the intracellular organelles of maize shoots. Biochem. J. 110, 119 (1968)
Kintia, P.K., Wojciechowski, Z.A.: Free and bound sterol in seedlings of Cucumis sativus. Phytochem. 13, 2235 (1974)
Knights, B.A.: Sterol metabolism in plants. Chem. Brit. 9, 106–111 (1973)
Knights, B.A., Elliott, C.G.: Metabolism of Δ7- and Δ5.7-sterols by Phytophthora cactorum. Biochim. Biophys. Acta 441, 341–346 (1976)
Knights, B.A., Smith, A.R.: Sterols of male and female compound inflorescences of Zea mays. Planta 33, 89–93 (1976)
Nes, W.R.: Role of sterols in membranes. Lipids 9, 596–612 (1974)
Sucrow, W.: Inhaltsstoffe von Momordica charantia L. Δ5.25-sterols und sein β-d-glucosid. Chem. Ber. 99, 2765 (1966)
Sucrow, W., Reimerdes, A.: 117-4 from Cucurbitaceae. Z. Naturforsch. 23, 52–54 (1968)
Sucrow, W., Radüchel, B.: Biosynthesis of α-spinasterol in pumpkin. Tetrahedron 27, 4097 (1971)