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Sudan Journal of Agricultural Research

Effects of terpenoid biosynthesis inhibitors on strigol formation in Menispermum dauricum root culture

Nariaki Wakiuchi , Norifumi Yasuda, and Yukihiro Sugimoto

Abstract:
The terpenoid biosynthesis inhibitors, fluridone, lovastatin, and fosmidomycin, were applied to Menispermum dauricum root culture to investigate the biosynthetic pathway of strigol, a potent germination-inducing stimulant for seeds of root parasitic plants. Fluridone reduced germination-inducing activity, however, radioactivity was not detected in the strigol molecule purified from the M. dauricum culture filtrate that had been administered with [2-14C] mevalonolactone. The inhibitory effect of fluridone was not specific for strigol biosynthesis. Fosmidomycin did not affect germination-inducing activity in two weeks after the application. The results obtained in this study do not fully support the hypothesis that strigol is produced via the terpenoid metabolic pathway.




 

Sudan Journal of Agricultural Research Vol. 10  (2007) PP.93-100