Heupel, R.C. and Nes, W.D. (1984) Evidence for differences in sterol biosynthesis and derivatization in sorghum. Journal of Natural Products, 47 (2). pp. 292-299.
![[img]](http://eprints.icrisat.ac.in/style/images/fileicons/application_pdf.png) |
PDF
Restricted to ICRISAT researchers only |
Abstract
The 24-desalkyl- and 24-alkylsterols synthesized by leaves of flowering sorghum plants were identified by a combination of GLC, HPLC, MS and NMR. Leaves from plants in the same developmental stage were treated with 2-14/C-acetate, and the radioactivity was associated with individual components of the 4,4-desmethyl sterol fraction determined by a combination of HPLC-radioactivity counting and GLC/MS. The specific activities of sorghum leaf sterols are in the following decreasing order: cholesterol (1036 dpm/µg)>24α-ethylcholesterol (416 dpm/µg)>24α-methylcholesterol (389 dpm/µg)>24α-ethylcholesta-5,22-dienol (39 dpm/µg). While all 4 of these sterols were detected by GLC as components of steryl glycosides and steryl esters, only the 24-alkysterols were present as 14C-labelled steryl glycosides. The differential regulation of sterol biosynthesis and derivatization is discussed in terms of differences in their functions
| Item Type: | Article |
|---|---|
| Author Affiliation: | Plant Physiology and Chemistry Research Unit, WRRC-ARS/USDA, Department of Agriculture, Berkeley, CA 94710, USA |
| Subjects: | Plant Physiology and Biochemistry > Plant Physiology Plant Physiology and Biochemistry > Biochemistry |
| Divisions: | Sorghum |
| Depositing User: | Ms K Syamalamba |
| Date Deposited: | 14 May 2012 05:18 |
| Last Modified: | 14 May 2012 05:18 |
| Official URL: | http://dx.doi.org/10.1021/np50032a010 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/5283 |
Actions (login required)
 |
View Item |
