Young developing seedlings of Mimulus cardinalis Douglas (Scrophulariaceae) were grown in Hoagland's medium supplemented with lysine (LYS; 1.0 mM), threonine (THR; 1.0 mM), LYS+THR (1.0 mM ea.) or LYS+THR+methionine (MET; 1.0-1.0-0.1 mM, respectively). LYS or THR reduced the total amount of protein