M. Carvajal et al., EFFECT OF TITANIUM(IV) APPLICATION ON SOME ENZYMATIC-ACTIVITIES IN SEVERAL DEVELOPING STAGES OF RED-PEPPER PLANTS, Journal of plant nutrition, 17(2-3), 1994, pp. 243-253
The effect of two titanium (IV) compounds, titanium ascorbate and tita
nium chloride, on some enzymatic activities, such as catalase, peroxid
ase, Lipoxygenase and nitrate reductase in seeds, embryos, and seedlin
gs and adult plants of red pepper (Capsicum annuum L,), was studied, A
stimulatory effect of titanium was observed for every iron-depending
enzyme studied at all developing stages as well as for nitrate reducta
se but only for whole plants. This occurs because Ti+3/Ti+4 catalizes
the activity of iron and enhances iron-dependent enzymes.