Plant Parasites of Europe

leafminers, galls and fungi

Plasmopara muralis

Plasmopara muralis Thines, 2011

on Parthenocissus

Plasmopara muralis on Parthenocissus quinquefolia

Parthenocissus quinquefolia<, Belgium, prov. Limbourg, Reppel, Abeekvallei, 13.viii.2021 © Carina Van Steenwinkel: early infection

Plasmopara muralis on Parthenocissus quinquefolia

underside of an infected leaf

Plasmopara muralis on Parthenocissus quinquefolia

seriously infected leaf

Plasmopara muralis on Parthenocissus quinquefolia

conidiophores (congo-red staining)

Plasmopara muralis on Parthenocissus quinquefolia

ultimate branchings

Plasmopara muralis on Parthenocissus quinquefolia

conidia

Plasmopara muralis on Parthenocissus quinquefolia

conidia; measurements (11)-16.3-(24) x (13)-26.5-(43) µm (n=23)

gall

leaves with reddish brown spots. Underside with a whitish fungal down consisting of vertical conidiophores that apically several times are branching, each branch ending upon an ovoid conidium.

host plants

Vitaceae, monophagous

Parthenocissus quinquefolia, tricuspidata.

notes

The conidia in the material illustrated here are larger than mentioned by Thines in his original description of the species, viz: (10)12.5-14(17) x (11.5)14.5-20.5(29.5) µm.

references

Duarte, Choi, Soares & Barreto (2014a), Jage, Klenke, Kruse ao (2017a), Klenke & Scholler (2015a), Kruse (2019a), Kruse, Thiel, Brodtbeck ao (2017a), Rouxel, Mestre, Baudoin ao (2014a), Thines (2011a).

Last modified 15.viii.2021