55. ソルガムにおける5-deoxystrigolの酸化的代謝(口頭発表,植物化学調節学会第46回大会)

概要

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Strigolactones have been isolated from root exudates of various plants. A series of strigolactones may be derived from 5-deoxystrigol by oxidation, acetylation, methylation and demethylation. We found that some plants can convert GR24 to its hydroxylated products. In this study, 5-deoxystrigol was applied to hydroponically grown sorghum (Sorghum bicolor), and the conversion of the probable common precursor of other strigolactones to hydroxylated strigolactones was analyzed by LC-MS/MS. A sorghum variety referred to as NM24 was selected as the highest producer of sorgomol (9-hydroxylated 5-deoxystrigol). NM24 converted [6'-D]-5-deoxystrigol and [6'-D]-2'-epi-5-deoxystrigol to [6'-D]-sorgomol and its 2'-epimer, respectively. Accordingly, the ability to hydroxylate 5-deoxystrigol at C-9 in sorghum was confirmed.
植物化学調節学会の論文
2011-10-03