Podosphaera pannosa (Wallroth) de Bary, 1870

Fungi, Ascomycota, Leotiomycetes, Erysiphales, Erysiphaceae

op Prunus, Rosa

on Prunus, Rosa

Rosa sp., Dronten © Arnold Grosscurt

Podosphaera pannosa: powdery mildew on Rosa sp.

Rosa sp., Dronten © Arnold Grosscurt

ook aan de onderzijde

Podosphaera pannosa: powdery mildew on Rosa sp.

also on the underside

Rosa spec., Nieuwendam: conidia

Podosphaera pannosa: conidia

Rosa spec., Nieuwendam: conidia

conidiofoor

Podosphaera pannosa: conidiophore

conidiophore

appressoria

Podosphaera pannosa: appressorium Podosphaera pannosa: appressorium

appressoria

gal: mycelium wit, vaak dicht-viltig, beiderzijdig, blijvend, ook op bloemen en stengels, soms misvormingen veroorzakend. Appressoria onopvallend tot tepelvormig. Conidia in ketens gevormd, met fibrosine-lichaampjes, ovaal. Cleistothecia met één ascus die gewoonlijk acht sporen bevat. Aanhangsels niet zeer talrijk, sub-equatoriaal, 0.5-2 x de diameter, mycelioid, slap, bruin, septaat, onvertakt.

gall: mycelium white, often thick-felty, amphigenous, persistent , also on fruits and stems, sometimes causing malformations. Appressoria inconspicuous to nipple-shaped. Conidia formed in chains, with fibrosin bodies, oval. Cleistothecia with a single ascus, containing usually eight spores. Appendages not very numerous, sub-equatorial, 0.5-2 x the diameter, mycelioid, flaccid, brown, septate, unbranched.

waardplanten: Rosaceae, oligofaag

hostplants: Rosaceae, oligopgous

Prunus armeniaca, cerasus, domestica, dulcis, laurocerasus, lusitanica, mahaleb, nigra, persica, serotina, virginiana; Rosa agrestis, alba, arvensis, banksiae, canina, centifolia, chinensis, corymbifera, x damascena, davurica, filipes, foetida, gallica, inodora, luciae, macrophylla, majalis, multiflora, pendulina, pisocarpa, roxburghii, rubiginosa, rugosa, sherardii, spinosissima, tomentosa, villosa, virginiana, watsoniana, woodsii subsp. manca.

Zelden ook Cotinus coggyria; Forsythia (Anacardiaceae, Oleaceae).

Occasionally Cotinus coggyria; Forsythia (Anacardiaceae, Oleaceae).

synoniemen: Sphaerotheca pannosa (Wallroth) Léveillé, 1851; Oidium leucoconium Desmazieres, 1846.

synonyms: Sphaerotheca pannosa (Wallroth) Léveillé, 1851; Oidium leucoconium Desmazieres, 1846.

literatuur:

references:

Blumer (1946a), Braun (1995a). Braun & Cook (2012a), Bresinsky (2016a), Buhr (1965a), Czerniawska (2001a), Doppelbaur & Doppelbaur (1973a), Dynowska, Fiedorowicz & Kubiak (1999a), Ellis & Ellis (1997a), Ilie & Marinescu (2011a), Jage, Kruse, Kummer ao (2013a), Jage, Scholler & Klenke (2010a), Klenke & Scholler (2015a), Kozłowska, Mułenko & Heluta (2015a), Kruse (2014a), Kruse & Jage (2014a), Kummer (2012a), Leus, Dewitte, Van Huylenbroeck ao (2006a), Losa España (1942a), Redfern & Shirley (2011a), Scholler, Reinhard & Schubert (1996a), Talgø, Sundheim, Gjærum ao (2010a), Tóth (1994a), Unamuno (1943a).

25/05/2017