Peronospora tabacina Adam, 1933

tobacco blue mould disease

on Solanaceae

Nicotiana sylvestris, Belgium, prov. Limbourg, Hasselt, Domein Kiewit, 30.ix.2020 © Carina Van Steenwinkel

infected leaf, upper side

detail of the underside, with down

conidiophore

terminal branchings

conidia

conidia

gall

Upper side of the leaf with yellowish brown spots. Underside there with a greyish purple down consisting of erect conidiophores that apically several times are dichotomously branching, each branch ending upon an ovoid conidium.

host plants

Solanaceae, oligophagous

Capsicum annuum; Nicotiana alata, rustica, sylvestris, tabacum; Petunia x hybrida; Physalis; Schizanthus grahamii.

synonyms

Peronospora hyoscyami f. tabacina.

references

Belbahri, Calmin, Pawlowski & Lefort (2005a), Borrás-Hidalgo, Thomma, Silva, ao (2010a), Brandenburger (1985: 554), Chater, Woods, Stringer, ao (2020a), Cunnington (2008a), Doppelbaur, Huber & Poelt (1965a), Göker, García-Blázquez, Voglmayr ao (2009a), Gustavsson (1991a), García-Blázquez, Constantinescu, Tellería & Martín (2007a), Hafellner (1980a), Jage, Klenke, Kruse ao (2017a), Klenke & Scholler (2015a), Krsteska, Dimeska, Stojkov & Stojanoski (2015a), Mułenko, Piątek, Wołczańska ao (2010a), Negrean & Anastasiu (2006a), Sert & Stimbtil (2003a), Thines & Choi (2016a).