Diaporthaceae

Diaporthe disease of soybean ( Diaporthe phaseolorum var sojae )

The Diaporthaceae form a family of the order Diaporthales.

Classification

The Diaporthaceae were described by Höhnel 1917, which she put together with the Gnomoniaceae in the Diaporthales. Wehmeyer summed up the family in 1975 already much closer, but put the Valsaceae still in the same family. Castlebury et al. (2007) restricted the term only to the genera Diaporthe ( anamorphs with the genus Phomopsis ) and Mazzantia. After 2008, Barr and Vassiljeva described nor the genus Leucodiaporthe.

Features

A common feature of Diaporthaceae is the well-trained stroma embedded in freshly -killed wood or root of the host. The stroma is the hyphae, which is perceived as a supposed fruiting bodies, but actually only surrounds the tiny, conical fruit bodies, the ascomata.

In Diaporthe species the stroma covered several fruit bodies ( ascomata ) and forms a black line in the hardened host tissue. Anamorphic species ( Phomopsis ) form uni- or multiloculate pyknidiale Stromata, where hyaline, mostly unseptierte conidia are produced on phialidischen elongated conidiogenous cells. They often form filamentous beta - conidia. Mazzantia species possess a stroma, which comprises only one or a few ascomata.

Ecology

The Diaporthaceae are parasites, but also saprophytes with a broad host range of woody dicots to herbaceous monocots. Thus var caused Diaporthe sojae phaseolorum the Diaporthe disease of soybean. Diaporthe ambigua a root causes cancer of the fruit trees of the family Rosaceae. Examples of saprophytic lifestyle are Phomopsis occulta on cypress or Phomopsis quercella on dying Eichensämlingen and Phomopsis quercina as a saprophytic fungus of accompanying Fusicoccum quercus, oak bark triggers the fire.

Genera

• Diaporthe: Very large genus with 801 described species, includes the very large anamorphic genus Phomopsis.
• Mazzantia: was provided earlier to the Gnomoniaceae.
• Leucodiaporthe