Dhurrin Synthesis in Sorghum Is Regulated at the Transcriptional Level and Induced by Nitrogen Fertilization in Older Plants
作者： Peter Kamp Busk , Birger Lindberg Møller
DOI: 10.1104/PP.000687
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摘要: The content of the cyanogenic glucoside dhurrin in sorghum (Sorghum bicolor L. Moench) varies depending on plant age and growth conditions. cyanide potential is highest shortly after onset germination. At this stage, nitrogen application has no effect content, whereas older plants, induces an increase. all stages, correlates well with activity two biosynthetic enzymes, CYP79A1 CYP71E1, protein mRNA level for enzymes. During development, lower than suggesting that catalyzes rate-limiting step synthesis as previously been shown using etiolated seedlings. site shifts from leaves to stem during development. In combination, results demonstrate largely determined by transcriptional regulation enzymes CYP71E1.
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