Motonami, N. and Ueno, K. and Nakashima, H. (2013) The bioconversion of 5-deoxystrigol to sorgomol by the sorghum, Sorghum bicolor (L.) Moench. Phytochemistry. pp. 1-8.
![[img]](http://eprints.icrisat.ac.in/style/images/fileicons/application_pdf.png) |
PDF
- Published Version
Restricted to ICRISAT researchers only |
Abstract
Strigolactones, important rhizosphere signalling molecules and a class of phytohormones that control shoot architecture, are apocarotenoids of plant origin. They have a structural core consisting of a tricyclic lactone connected to a butyrolactone group via an enol ether bridge. Deuterium-labelled 5-deoxystrigol stereoisomers were administered to aquacultures of a high sorgomol-producing sorghum cultivar, Sorghum bicolor (L.) Moench, and conversion of these substrates to sorgomol stereoisomers was investigated. Liquid chromatography–mass spectrometry analyses established that 5-deoxystrigol (5-DS) and ent-2′-epi-5-deoxystrigol were absorbed by sorghum roots, converted to sorgomol and ent-2′-epi-sorgomol, respectively, and exuded out of the roots. The conversion was inhibited by uniconazole-P, implying the involvement of cytochrome P450 in the hydroxylation. These results provide experimental evidence for the postulated biogenetic scheme for formation of strigolactones, in which hydroxylation at C-9 of 5-DS can generate sorgomol.
| Item Type: | Article |
|---|---|
| Author Affiliation: | Graduate School of Agricultural Science, Kobe University, Rokkodai, Nada, Kobe 657-8501, Japan |
| Subjects: | Plant Physiology and Biochemistry > Biochemistry |
| Divisions: | Sorghum |
| Depositing User: | Mr. SanatKumar Behera |
| Date Deposited: | 23 Apr 2013 13:53 |
| Last Modified: | 23 Apr 2013 13:53 |
| Official URL: | http://dx.doi.org/10.1016/j.phytochem.2013.02.017 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/10363 |
Actions (login required)
 |
View Item |
