Is stimulation of carotenoid biosynthesis in arbuscular mycorrhizal roots a general phenomenon?

Identification and quantification of cyclohexenone glycoside derivatives in mycorrhizal roots of Lotus japonicus revealed considerable concentrations of accumulating apocarotenoids. Application of norflurazon, a specific inhibitor of phytoene desaturase, showed the activation of carotenoid biosynthesis in mycorrhizal roots of all plant species examined.