Example of powdery mildew (right) along with Downy mildew on a grape leaf
Causal agents
Species of fungi in the order Erysiphales
Hosts
plants
Powdery mildew is a fungal disease that affects a wide range of plants. Powdery mildew diseases are caused by many different species of ascomycete fungi in the order Erysiphales. Powdery mildew is one of the easier plant diseases to identify, as the signs of the causal pathogen are quite distinctive. Infected plants display white powdery spots on the leaves and stems.[1] This mycelial layer may quickly spread to cover all of the leaves. The lower leaves are the most affected, but the mildew can appear on any above-ground part of the plant. As the disease progresses, the spots get larger and denser as large numbers of asexual spores are formed, and the mildew may spread up and down the length of the plant.
Powdery mildew grows well in environments with high humidity and moderate temperatures; greenhouses provide an ideal moist, temperate environment for the spread of the disease. This causes harm to agricultural and horticultural practices where powdery mildew may thrive in a greenhouse setting.[2] In an agricultural or horticultural setting, the pathogen can be controlled using chemical methods, bio-organic methods, and genetic resistance. It is important to be aware of powdery mildew and its management strategies as the resulting disease can significantly reduce important crop yields.[3]
Powdery mildew on a recently infected plant.Powdery mildew growing on a leaf (magnified)Powdery mildew growing on a leaf (high magnification)
^Ciliberto, Giada (2024-03-31). "Lo chiamano il "mal bianco" ed è una malattia delle piante: come riconoscerla e combatterla". retididedalus.it (in Italian). Retrieved 2024-04-02.
^Keinath, Anthony P.; DuBose, Virginia B. (2012-12-01). "Controlling powdery mildew on cucurbit rootstock seedlings in the greenhouse with fungicides and biofungicides". Crop Protection. 42: 338–344. doi:10.1016/j.cropro.2012.06.009. ISSN 0261-2194.
^"Small Grain Wheat Diseases - Powdery Mildew". Archived from the original on 2002-12-23.
Powderymildew is a fungal disease that affects a wide range of plants. Powderymildew diseases are caused by many different species of ascomycete fungi...
water vapour. Fungi portal Downy mildew Phase I environmental site assessment Powderymildew Obligate parasite "Mildew". Compact Oxford English Dictionary...
Blumeria graminis (commonly called barley powderymildew or corn mildew) is a fungus that causes powderymildew on grasses, including cereals. It is the...
Erysiphe cichoracearum is a fungal plant pathogen that causes powderymildew disease of cucurbits, including melon, cucumber, pumpkin, and squash. The...
is a powderymildew fungus that infects P. lanceolata. All of the P. lanceolata populations are infected by several strains of this powderymildew fungus...
leafroll-associated virus 3) is also economically significant. The seriousness of PowderyMildew (Uncinula necator) has been recognized since at least 1859 in the northern...
and grapes were easy to grow. Uncontrolled powderymildew rots the grapes from the inside out. Powderymildew slows the growth of the grape skin so that...
covering the leaves. It is associated with cool damp springs. Pansy downy mildew is caused by the oomycete Peronospora violae, which produces purple-brown...
flowers; very resistant to powderymildew. 'Karen's Appalachian Blush' – delicate white bracts edged in pink; some powderymildew resistance. 'Kay's Appalachian...
strawberries, hop, hemp and Cineraria. It causes powderymildew of hops. The pathogen that causes powderymildew of hops was once considered to be Sphaerotheca...
obligate fungal pathogen, from the phylum Ascomycota, which causes powderymildew on onion. This disease prefers warm, dry environments. It is rare in...
Powderymildew of lilac, or Erysiphe syringae (formerly Microsphaera syringae) is a fungal pathogen of lilacs. The host of the fungal pathogen, Syringa...
Downy mildew refers to any of several types of oomycete microbes that are obligate parasites of plants. Downy mildews exclusively belong to the Peronosporaceae...
Uncinula necator (syn. Erysiphe necator) is a fungus that causes powderymildew of grape. It is a common pathogen of Vitis species, including the wine...
pannosa is a plant pathogen. It produces a powderymildew on members of the rose family. Rose powderymildew [also known as 'Weeping Mildred'] is caused...
Mildew locus o (MLO) is a plant-specific gene family. Specific members of the Mildew Locus O gene family act as powderymildew susceptibility factors....
These are managed with fungicides. Leaf- and head- blight diseases: Powderymildew, leaf rust, Septoria tritici leaf blotch, Stagonospora (Septoria) nodorum...
Golovinomyces orontii is a species of fungus that causes powderymildew disease and it is in the family Erysiphaceae. It is an obligate biotroph that infects...
mangiferae is a plant pathogen that infects mango trees causing powderymildew. Powderymildew of mango is an Ascomycete pathogen of the Erysiphales family...
significant sensitivity to several viticultural hazards including rot, powderymildew, downy mildew, and grape worms. Carignan is a late budding and ripening grape...
alphitoides is a species of fungus which causes powderymildew on oak trees. Today oak powderymildew is one of the most common diseases in European forests...
flowers come into bloom. In late summer, lilacs can be attacked by powderymildew, specifically Erysiphe syringae, one of the Erysiphaceae. No fall color...
causing a yellowing and wilting of the leaves. Other diseases include powderymildew in dry tropical regions, leaf spots, yellow mosaic and root-knot nematodes...
is increased. Another, but less important, disease is powderymildew. Incidence of powderymildew in early development can cause drastic yield losses because...
include apple scab, rice blast, the ergot fungi, black knot, and the powderymildews. The members of the genus Cordyceps are entomopathogenic fungi, meaning...
causes powderymildew on cucurbits. Podosphaera fuliginea and Erysiphe cichoracearum are the two most commonly recorded fungi causing cucurbit powdery mildew...
and white powdery growth appears on the leaves. The infection usually appears at the upper leaf surface as white fungal growth. Powderymildew is not as...
Global Information
