Plant Parasites of Europe

leafminers, galls and fungi

Golovinomyces tabaci

Golovinomyces tabaci (Sawada) Shin, Takamatsu & Kiss, 2919

polyphagous

parasite

Mycelium amphigenous, also on stems and peduncles, thin, effuse, white, evanescent to persistent; appressoria poorly developed to nipple-shaped, solitary. Conidiophores 70–140 μm long (without conidia); foot-cells straight, cylindrical, ± 30–100 μm, followed by (1)2(4) shorter cells. Cleistothecia amphigenous, ø 100-140 µm; appendages 15–40, 0.3-2 x the diameter, mostly arising from the lower half, mycelioid, simple, with 8-20 asci containing 2 spores.

host plants

Capsella bursa-pastoris, rubella; Cucurbita pepo; Dahlia pinnata; Inula helenium; Nicotiana tabacum.

synonyms

Golovinomyces orontii: auctorum

notes

For a certain identification a study of the DNA sequence is required. Morphologically difficult to distinguish from the Golovinomyces orontii complex, and practically indistinguishable from G. spadiceus.

references

Braun, Shin, Takamatsu ao (2019a).

Last modified 14.iii.2019