Accumulation of apocarotenoids in mycorrhizal roots of Ornithogalum umbellatum

Colonization of roots of Ornithogalum umbellatum by the mycorrhizal fungus Glomus intraradices resulted in the accumulation of a highly complex apocarotenoid mixture consisting of cyclohexenone derivatives, mycorradicin, mycorradicin derivatives and the “yellow pigment”. The cyclohexenone derivatives are identified as mono-, di- and branched triglycosides of blumenol C and related aglycones.