Diaporthe eres

Diaporthe • Diaporthales • Sordariomycetes • Ascomycota • fungi • plant diseases • pests-diseases-weeds

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Diaporthe eres from Prunus davidiana - A-B) conidiomata on twig, C-D) transverse and E) longitudinal sections through conidioma, F) conidiophores and conidiogenous cells, G) alpha conidia, H) colonies on PDA at 3 days (left) and 30 days (right) - scale bars: 1mm (A), 250μm (B–E), 10 μm (F-G) (click on image to enlarge it)
Author(s): Haiyan Zhu, Meng Pan, Guido Bonthond, Chengming Tian, and Xinlei Fan
Source: MycoKeys (2019), 59, p. 82

Diaporthe eres Nitschke 1870

Diaporthe eres is the type species of the genus Diaporthe. It is widely distributed in Europe and is also found in other regions. It can be common and infects various plants, mainly woody plants like forest trees, grapevine, Prunus or Juglans species. Infections cause stem and branch cankers, as well as other diseases like fruit rots. These often lead to dieback and blights.

Conidiophores are cylindrical, hyaline, unbranched, straight or slightly curved, tapering towards the apex. They have a size of around 12-13 × 2-3 μm. Alpha conidia are hyaline, aseptate, smooth, ellipsoidal, and rounded at both ends, with an averge size of 6-8 x 2-3 μm. Beta conidia are hyaline, unicellular, filiform, and curved, with a size of around 20-25 x 1-2 µm.

Synonyms:
Diaporthe perniciosa
Phomopsis controversa
Phomopsis mali
Phomopsis oblonga
Phomopsis scobina