Geraniol, but not tryptophan, feeding enhanced the MIA content in C. roseus leaves.
CrGES expression is leaf and shoot specific and is induced by methyl jasmonate.
CrGES-vigs reduced the MIA content, which was restored upon geraniol feeding.
Overexpression of CrGES in C. roseus leaves increased the accumulation of MIAs.
Thus, GES expression and geraniol availability play important role in MIA formation.