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Taphrina deformans symptoms on peach (click on image to enlarge it)
Author(s): Paul Bachi, University of Kentucky Research and Education Center
Source: IPM Images

Taphrinomycetes - Taphrinales

The class of Taphrinomycetes and its only order the Taphrinales contains more than 100 species of plant pathogenic fungi. They cause leaf deformations, blistering and gall-like symptoms. For example, Taphrina deformans causes leaf curl on peach and nectarine.

The life cycle includes a saprophytic, yeast-like haploid state. The plant pathogenic diploid state forms hyphae which spread within the host plant. Eventually a naked layer of asci, but no fruiting body, is formed on the plant surface. The asci contain 8 haploid ascospores each. The ascospores develop into the the yeast-like stage and multiply by budding.

The following genera and individual species are currently entered under this group: