Oidium meliacearum U. Braun

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Schubert K. @EXCL@ Kainz C. (06-06-12).

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Oidium meliacearum U. Braun.

Taxonomic Literature: Taxonomic notes: hyphae branched, 2-5 µm wide, septate, thin-walled, smooth; appressoria solitary or in opposite pairs, 3-8 µm diam., nipple-shaped to distinctly lobed. Braun U., Delhey R., Dianese J. C. & Hosagoudar V. P. 2006, Schlechtendalia 14: 85-97.

Biogeography: Continent: Europe. Country or state(s): Netherlands.

Ecology: Biotroph; phytopathogenic; growing on leaves, amphigenous. Host or Phorophyte Taxonomy: Melia azedarach L.; Melia, Meliaceae.

Reproduction Strategy: Only known as sterile, asexually reproducing form.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type; not branched (arising from superficial hyphae, erect, foot-cells straight to slightly curved or flexuous-sinuous at the base, subcylindrical or slightly increasing in width from base to top, followed by 1-2 shorter cells, 10-25 µm long, occasionally slightly inflated (suggesting short conidial chains)); basal cells 40-80 µm long, 5-9 µm wide. Conidium Formation: Conidiogenous cells single. Conidia: Obovoid (-subcylindrical primary conidia), doliiform (+ 13 secondary conidia), or cylindrical; macroconidial (primary and secondary conidia, l/w ratio of secondary conidia 1.4-4; fresh conidia with oil droplets, germ tubes subterminal, ending in lobed appressoria), not branched, 25-45 µm long, 12-18 µm wide; aseptate; cell wall hyaline; without distinct fibrosin body fibrosin bodies.

(report generated 04.Okt.2007)