During the spring of 2003, plants of Viburnum sargentii, a species mostly used in gardens as low-maintenance hedges, showing symptoms unlike those of known diseases were observed in some private gardens in the Biella area (northern Italy). Lesions on leaves were the only symptoms seen. Lesions
Recent studies demonstrated that the proanthocyanidins (PA), the polymers of flavan-3-ols, naturally occurring plant metabolites widely available in fruits, vegetables, nuts, seeds, flowers and bark, have anti-inflammatory, anticarcinogenic, anti-allergic, antioxidant and vasodilatory actions. We