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Uncinula necator
Scientific classification
Kingdom:
Fungi
Division:
Ascomycota
Class:
Leotiomycetes
Order:
Erysiphales
Family:
Erysiphaceae
Genus:
Uncinula
Species:
U. necator
Binomial name
Uncinula necator
(Schwein.) Burrill
Synonyms
Erysiphe necator Schwein. (1834)
Uncinula necator (syn. Erysiphe necator) is a fungus that causes powdery mildew of grape. It is a common pathogen of Vitis species, including the wine grape, Vitis vinifera. The fungus is believed to have originated in North America. European varieties of Vitis vinifera are more or less susceptible to this fungus. Uncinula necator infects all green tissue on the grapevine, including leaves and young berries. It can cause crop loss and poor wine quality if untreated. The sexual stage of this pathogen requires free moisture to release ascospores from its cleistothecia in the spring. However, free moisture is not needed for secondary spread via conidia; high atmospheric humidity is sufficient. Its anamorph is called Oidium tuckeri.
It produces common odors such as 1-octen-3-one and (Z)-1,5-octadien-3-one.[1]
This mildew can be treated with sulfur or fungicides; however resistance to several chemical classes such as Benomyl, the DMIs, and Strobilurins has developed. While synthetic fungicides are often recommended as applications around bloom, it is common to include sulfur in a tank mix to help with resistance management.
^Darriet P, Pons M, Henry R, et al. (May 2002). "Impact odorants contributing to the fungus type aroma from grape berries contaminated by powdery mildew (Uncinula necator); incidence of enzymatic activities of the yeast Saccharomyces cerevisiae". J. Agric. Food Chem. 50 (11): 3277–82. doi:10.1021/jf011527d. PMID 12009998.
Uncinulanecator (syn. Erysiphe necator) is a fungus that causes powdery mildew of grape. It is a common pathogen of Vitis species, including the wine...
have accepted their conclusions. One notorious species, Uncinulanecator (syn. Erysiphe necator), attacks various species of grapes (Vitis spp.) and can...
as soybeans, are affected by Microsphaera diffusa. Erysiphe necator (or Uncinulanecator) causes powdery mildew of grapes.[citation needed] The fungus...
Cochliobolus heterostrophus. Taphrina deformans causes leaf curl of peach. Uncinulanecator is responsible for the disease powdery mildew, which attacks grapevines...
cinerea), white mold (Sclerotinia sclerotiorum), and powdery mildew (Uncinulanecator). As a result, it has use in crops including fruits, soybeans and vegetables...
leaving him with little interest to devote to wine. In the 1850s Oidium Uncinulanecator and war devastated most of Tuscany's vineyards with many peasant farmers...
being used in the 1840s in France to control grape vine powdery mildew Uncinulanecator, which had been introduced from the USA in 1845 and reduced wine production...
fungal spore Oidium, a disease of grapes caused by the fungus species Uncinulanecator (syn. Oidium tuckeri) This disambiguation page lists articles associated...
cinerea), Cercospora (leaf spot), septoria, powdery mildews (e.g. Uncinulanecator), and scab (e.g. Venturia pyrina). As a result, it has potential use...
also economically significant. The seriousness of Powdery Mildew (Uncinulanecator) has been recognized since at least 1859 in the northern grape district...
and grapevine downy mildew Plasmopara viticola and powdery mildew Uncinulanecator. Apple trees are especially interesting as a research model in agriculture...
all sorts of biological invaders. First there was powdery mildew (Uncinulanecator) and downy mildew (Peronospora). One response to these fungal diseases...
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