ERYSIPHACEAE Tul. & C. Tul.
(powdery mildews)

Interactions where ERYSIPHACEAE is the victim or passive partner (and generally loses out from the process)

The following relationships have been collated from the published literature (see 'Interaction References').

Filters:

Affected Part Summary Taxon Vernacular Classification References Darwin Classification of Active Taxon Active Taxon Active Vernacular Active Taxon Uncertain Active State Active Part Active Stage Relationship Relationship Uncertain Relationship Geography Darwin Classification of Passive Taxon Passive Taxon Passive Vernacular Passive Taxon Uncertain Passive State Passive Part Passive Stage Passive Taxon's significance to Active Taxon Indoors etc Season Summary
mycelium is food source of larva Halyzia sedecimguttata Orange Ladybird Coleoptera: Coccinellidae Ladybirds, Majerus, M. & Kearns, P., 1989
/Animalia/Arthropoda/Insecta/Coleoptera/Coccinellidae/Halyzia sedecimguttata/Halyzia sedecimguttataorange ladybirdlarva Fungus / feeder /Fungi/Ascomycota/Leotiomycetes/Erysiphales/Erysiphaceae/Erysiphaceaepowdery mildewsmycelium (late summer)larva feeds on mycelium
mycelium is food source of larva Tytthaspis sedecimpunctata Sixteen-spot Ladybird, 16-spot Ladybird Coleoptera: Coccinellidae Ladybirds, Majerus, M. & Kearns, P., 1989
/Animalia/Arthropoda/Insecta/Coleoptera/Coccinellidae/Tytthaspis sedecimpunctata/Tytthaspis sedecimpunctatasixteen-spot Ladybird, 16-spot ladybirdlarva Fungus / feeder /Fungi/Ascomycota/Leotiomycetes/Erysiphales/Erysiphaceae/Erysiphaceaepowdery mildewsmycelium larva feeds on mycelium
is grazed by larva Mycodiplosis rust midges Diptera: Cecidomyiidae A Dipterist’s handbook, Stubbs, A.E. & Chandler, P. (eds), 1978
/Animalia/Arthropoda/Insecta/Diptera/Cecidomyiidae/Mycodiplosis/Mycodiplosisrust midgeslarva Fungus / external feeder /Fungi/Ascomycota/Leotiomycetes/Erysiphales/Erysiphaceae/Erysiphaceaepowdery mildews larva grazes on
mycelial mat mycelial mat is parasitised by pycnidium of Ampelomyces coelomycetous anamorph UK/Ireland Ampelomyces quisqualis a coelomycete Pleosporales: Phaeosphaeriaceae Fungi of the South East England, Dennis, R.W.G., 1995
Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997
Microfungi on Miscellaneous Substrates: An Identification Handbook, Ellis, M.B. & J.P., 1998
/Fungi/Ascomycota/Dothideomycetes/Pleosporales/Phaeosphaeriaceae/Ampelomyces quisqualis/Ampelomyces quisqualisa coelomycetepycnidiumAmpelomyces coelomycetous anamorph Fungus / parasiteUK and/or Eire /Fungi/Ascomycota/Leotiomycetes/Erysiphales/Erysiphaceae/Erysiphaceaepowdery mildewsmycelial mat pycnidium of Ampelomyces coelomycetous anamorph parasitises mycelial mat

Author & YearTitleSource
Dennis, R.W.G., 1995Fungi of the South East England383pp, Royal Botanic Gardens, Kew
Ellis, M.B. & J.P., 1997Microfungi on Land Plants: An Identification Handbook2nd (New Enlarged) edition, 868pp, The Richmond Publishing Co. Ltd
Ellis, M.B. & J.P., 1998Microfungi on Miscellaneous Substrates: An Identification Handbook2nd (New Enlarged) edition, 246pp, The Richmond Publishing Co. Ltd
Majerus, M. & Kearns, P., 1989LadybirdsNaturalists’ Handbooks, 10, 103pp, The Richmond Publishing Co. Ltd
Stubbs, A.E. & Chandler, P. (eds), 1978A Dipterist’s handbookVol 15, 255pp, Amateur Entomologists’ Society

ERYSIPHACEAE (powdery mildews) may be included in 'feeds on' relations listed under the following higher taxa:

ERYSIPHACEAE (powdery mildews) may also be included in 'fed on by' relations listed under the following higher taxa:

Subtaxon Rank Featured
subtaxa
No of
interactions
No of
references
Species 4 trophisms
Species 100 trophisms 1 references
Genus 63 subtaxa 691 trophisms 30 references
Genus 16 subtaxa 326 trophisms 3 references
Genus 3 subtaxa 22 trophisms
Genus 1 subtaxa 6 trophisms 1 references
Genus 2 subtaxa 50 trophisms 4 references
Genus 2 subtaxa 3 trophisms 1 references
Genus 9 subtaxa 34 trophisms 2 references
Genus 26 subtaxa 336 trophisms 6 references
Genus 2 subtaxa 2 trophisms 1 references
Genus 2 subtaxa 11 trophisms 3 references
Taxonomic hierarchy:
FamilyERYSIPHACEAE (powdery mildews)
OrderERYSIPHALES (powdery mildews)
SubclassLEOTIOMYCETIDAE (powdery mildews)
ClassLEOTIOMYCETES (a class of fungi)
SubphylumPEZIZOMYCOTINA (a subphylum of ascomycetes)
PhylumASCOMYCOTA (spore shooters, ascomycete)
KingdomFUNGI (true fungi)
DomainEukaryota (eukaryotes)
LifeBIOTA (living things)
NBNNBN (data.nbn.org.uk) has a distribution map for ERYSIPHACEAE (powdery mildews)

ERYSIPHACEAE (powdery mildews) may be included in identification literature listed under the following higher taxa:

General Works

AuthorYearTitleSource
Zaracovitis, C. 1965 Attempts to identify powdery mildew fungi by conidial characters. TBMS Vol 48 (4): 553-558, Plate 33, 34.

Literature listed under the following higher taxa may also be relevant to ERYSIPHACEAE (powdery mildews):

BioImagesBioImages (www.bioimages.org.uk) has 748 images of ERYSIPHACEAE (powdery mildews)

Powdery mildews are obligate plant parasites, infection usually being through the stomata. The mycelium is superficial on the surface of the leaf or other green parts.

During the early stages of infection, reproduction is asexual by means of conidia, formed in chains on long erect conidiophores.

Later in the season, the sexual (perfect) state is formed, although not in all species. This consists of black cleistothecia (yellow, orange then brown when immature), anchored to the substratum by characteristic radiating hyphae.

Unless it’s obvious from the specimen, always note the identity of the host. It’s best to identify this to species if possible, rather than just to genus.

If cleistothecia are present, the group is easily recognisable - they are just visible to the naked eye and easily seen with a hand lens. The cleistothecia are usually in groups but often very localised and have to be searched for. Look for grey patches.

In the absence of cleistothecia, Powdery Mildews can be distinguished from Downy Mildews under an x20 hand lens by the network of criss-crossing fine white hyphae running closely over the leaf surface like the railway lines at Clapham Junction. Above this is often a forest of erect conidiophores with the conidia just visible under the dissecting microscope or a x20 lens. If conidial production is very abundant, the conidia may aggregate into larger masses and the colony appear granular.

Do not be confused by hyperparasitic fungi, especially Ampelomyces, which is very common.

Look for white coatings on green surfaces. Usually this is obvious, but sometimes there can be just a suggestion of cloudiness.

The structure of the anchoring hyphae on the cleistothecium, the number of asci in the cleistothecium and the number of ascospores in the ascus.

Where cleistothecia are absent, the structure of the conidiophore and mode of production of conidia are used.

Examine under the dissecting microscope to get a general idea of the structure, then examine properly under the compound microscope.

For conidial anamorphs: mount in lactophenol cotton blue.

For cleistothecia: select several ripe cleistothecia with a mounted needle (they’ll stick better if the needle is first dipped in lactophenol and the point touched on paper to remove the excess.) Mount in a generous drop of lactophenol and examine without compression. Then gradually increase the compression a bit at a time by gently tapping the coverslip once or twice; re-examine each time. Count the asci as the cleistothecia burst, and the ascospores as the asci are squeezed out.

For species identification collect material with cleistothecia, if they are present.

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