Biology Reference
In-Depth Information
1.4.2 Correlation of the oxidation stages with Cronquist's system of
plant evolution
The progressive oxidative transformations of monomeric ellagitannins
can be correlated with morphological plant evolution system. Since
hydrolyzable tannins generally express strong antioxidation properties,
the potency of which being correlated to their biogenetic oxidation stage,
a correlation of their structures with the plant evolution system may be
more significant than that of other plant metabolites. Thus, a search of
such a correlation within subclasses of the Cronquist's system of plant
evolution for
Dicotyledonae
(Fig. 1.9),
i.e.
,
Rosidae
,
Dilleniidae
,
Hamamelidae
,
Caryophyllidae
and
Magnolidae
(NB: ellagitannins are
not found in
Asteridae
) unveiled the following aspects and several other
features:
