Taphrina wiesneri

Taphrina wiesneri is a plant pathogen causing witch's broom, or plant gall formations, on cherry trees (Prunus & Cerasus spp). It is an important pest species of the ornamental cherry Cerasus X yedoensis in Japan.

Life cycle
Komatsu et al. found that hyphae of T. wiesneri overwintered in symptomatic shoots of Cerasus × yedoensis. This is in contrast with the overwintering of other Taphrina species such as Taphrina deformans that over winter on leaf and twig surfaces before initiating infection.