Leveillula taurica

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Leveillula taurica infected onion leaves (click on image to enlarge it)
Author(s): S.K. Mohan
Source: IPM Images

Leveillula taurica (Lév. 1851) G. Arnaud 1921

This fungus has a global distribution and causes powdery mildew diseases on a wide variety of crops such as tomato, eggplant, green pepper or cotton. The mycelium partly penetrates the host plant and conidiophores re-emerge from the stomata. They produce 2 types of conidia, some have a pointed end while others are cylindrical to ellipsoid. The size of the conidia ranges from about 40 to 70 µm, the width from around 10 to 20 µm.

L. taurica is considered to be a species complex (Khodaparast et al. 2012).

Erysiphe taurica
Oidiopsis taurica