Taphrina pruni being larger than the healthy one. As a fungus, cool and wet weather conditions promote the germination of spores, whilst warm and dry weather results in infection rarely taking place. Colonisation can become extensive and eradication very difficult. The disease can to some degree be controlled by carefully removing infected branches, witch's brooms and fruit before the infective air borne spores are produced. Applications of copper-containing fungicides have a degree of control over the fungus. Taphrina pruni Taphrina pruni is a fungal plant pathogen of blackthorn (Prunus spinosa) that causes the Pocket or bladder Plum gall, a chemically induced distortion
Prunus mume a salty, sour condiment. A very similar variety of pickled plum, ' or ' is used in Vietnamese cuisine. The best fruit for this are from the forest around the Hương Pagoda in Hà Tây Province. "Prunus mume" is a common fruit in Asia and used in traditional Chinese medicine. It has long been used as a traditional drug and healthy food in East Asian countries. A recent study has indicated that "Prunus mume" extract is a potential candidate for developing an oral antimicrobial agent to control or prevent dental diseases associated with several oral pathogenic bacteria. Recent studies have