Erysiphe bremeri U. Braun

Data Set Maintenance: Data set compiled and standard item. Data set author(s): Kainz C. (06-01-12). Data set revised.

Nomenclature: Current taxonomic status: accepted. Taxonomic rank: species. Synonyms: Microsphaera alhagi (Golovin) U. Braun; Erysiphaceae Tul. & C. Tul.; Erysiphales.

Type Information: Basionym: Erysiphe alhagi Bremer, Ismen, Karel, Ozkan & M. Özkan, non Erysiphe alhagi Sorokin.

Taxonomic Literature: Taxonomic notes: + ascocarp outer wall cells obscure, irregularly polygonal, sometimes rounded, ca. 8-25 µm diam. Braun U., Beih. Nova Hedwigia 89: 1-700 [313-314] (1987).

Biogeography: Continent: Asia-Temperate. Region(s): Middle Asia, Western Asia, and China. Country or state(s): Turkmenistan, Uzbekistan, and Turkey (excl. European Turkey).

Ecology: Biotroph; phytopathogenic; growing on stems or leaves, amphigenous, causing the growth of galls. Host or Phorophyte Taxonomy: Leguminosae-Papilionoideae.

Reproduction Strategy: With sexual (and possible asexual) stages. Ascocarps: Cleistothecioid, orbicular, forming independently from the host thallus or mycelium, sub scattered or gregarious, .09-.18 mm in diam.. Margin: External filaments present; mycelioid, .5-4 µm long, 5-10.5 µm in diameter, hyaline or pigmented (sometimes coloured near the base), numerous, growing between the lower and upper hald of the ascocarp, flexuose, stiff and straight (occasionally rather), or geniculate (bent) (undulate-geniculate, sometimes angularly bent), smooth or rough (usually rather rough), thin or thick (thicker towards the base), not ramified, not branched or dichotomously branched (1-3 times, branchings diffuse, irregular, loose, tips straight or occasionally somewhat recurved, development of the branchings very late, sometimes irregularly branched in the lower half), aseptate or septate (sometimes 1-2-septate near the base).

Asci: 5-15 asci per ascocarp, 50-90 µm long, 20-45 µm wide.

Ascospores: c. 4 or c. 8 per ascus, spores (3)-4-6 per ascus, ellipsoid or ovoid, 16-24 µm long, 10-14 µm wide; septa absent.

Conidiomata: Present; hyphomycetous.

Conidiophores: Pseudoidium-type. Conidium Formation: Conidiogenous cells single, holoblastic. Conidia: Ellipsoid or cylindrical; macroconidial, not branched, 28-40 µm long, 14-18 µm wide; aseptate; without distinct fibrosin body fibrosin bodies.

(report generated 04.Okt.2007)