Plant Disease (2023) 107, p. 1240 (Singh et al.)

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Neeraja Singh, Jason Furr and Bindu Poudel-Ward (2023)
First report of powdery mildew caused by Golovinomyces latisporus on Helianthus annuus in Arizona
Plant Disease 107 (4), 1240-1240
Abstract: During 2021, sunflower plants (Helianthus annuus) grown in Arizona, U.S. were observed with powdery mildew symptoms. These included white blotches of amphigenous and caulicolous mycelia. The initial signs appeared as circular spots that expanded over the entire leaf and were also observed later on petioles and stems. The fungus Golovinomyces latisporus was isolated from the diseased plants. The identification was based on morphological characteristics and DNA sequence analysis. Pathogenicity of the isolates was demonstrated by inoculation and re-isolation.
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Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Golovinomyces latisporus Sunflower (Helianthus annuus) U.S.A. (SW)
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