Plasmopara viticola (Berkeley & Curtis) Berlese & de Toni, 1888

on Cissus, Parthenocissus, Vitis

Plasmopara viticola on Vitis vinifera

Vitis cf vinifera, Belgium, prov. Flemish Brabant, Diest. Halve Maan © Carina Van Steenwinkel

Plasmopara viticola on Vitis vinifera

underside

Plasmopara viticola on Vitis vinifera

hand lense magnification

Plasmopara viticola: conidiophore

conidiophores (congo red staining)

Plasmopara viticola: conidiophore

detail

Plasmopara viticola: conidiophore

conidia

Plasmopara viticola: damage on Vitis vinifera

Vitis vinifera, Nieuwendam

Plasmopara viticola: damage on Vitis vinifera

the “downy mildew” at the underside of the leaf

Plasmopara viticola on Vitis vinifera

seen with a stereo microscope

hostplants

Vitaceae, oligophagous

Cissus tiliaceae; Parthenocissus tricuspidata; Vitis amurensis, arizonica, davidii, labrusca, vinifera, vulpina.

notes

The “grape downy mildew” is the most devastating grape pathogen, that mostly occurs during moist, but not too cold summers.

predators

Mycodiplosis plasmoparae.

references

Brandenburger (1985a), Buhr (1965a), Doppelbaur, Huber & Poelt (1965a), Ellis & Ellis (1997a), Duarte, Choi, Soares & Barreto (2014a), García-Blázquez, Constantinescu, Tellería & Martín (2007a), Gessler, Pertot & Perazzolli (2011a), Göker, Voglmayr, Riethmüller, Weiß & Oberwinkler (2003a), Hafellner (1980a), Jage, Klenke, Kruse ao (2017a), Jage, Kruse, Kummer ao (2013a), Klenke & Scholler (2015a), Mułenko, Piątek, Wołczańska ao (2010a), Müller (2015a), Müller & Kokeš (2008a), Riethmüller, Voglmayr, Göker, Weiß & Oberwinkler (2002a), Roskam & Carbonnelle (2015a), Rouxel, Mestre, Baudoin ao (2014a), Scheuer & Bechter (2012a), Tomasi (2014a), Unamuno (1941a).

mod 2.ix.2018