Peronospora destructor (Berk.) Casp. ex Berk.
(Onion Downy Mildew)

Interactions where Peronospora destructor is the dominant partner and gains from the process

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

Stage		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
sporangium		colony of sporangium infects and damages live, shrivelled leaf			Allium cepa	Onion	Asparagales: Amaryllidaceae	Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998 Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997 A Checklist of the Downy Mildews (Peronosporaceae) of the British Isles, Preece, T.F., 2002	/Chromista/Oomycota/Peronosporea/Peronosporales/Peronosporaceae/Peronospora destructor/	Peronospora destructor	onion downy mildew			colony	sporangium	Foodplant / pathogen		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Asparagales/Amaryllidaceae/Allium cepa/	Allium cepa	onion		live, shrivelled	leaf		Major
sporangium		colony of sporangium infects and damages live, twisted stem			Allium cepa	Onion	Asparagales: Amaryllidaceae	Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998 Microfungi on Land Plants: An Identification Handbook, Ellis, M.B. & J.P., 1997 A Checklist of the Downy Mildews (Peronosporaceae) of the British Isles, Preece, T.F., 2002	/Chromista/Oomycota/Peronosporea/Peronosporales/Peronosporaceae/Peronospora destructor/	Peronospora destructor	onion downy mildew			colony	sporangium	Foodplant / pathogen		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Asparagales/Amaryllidaceae/Allium cepa/	Allium cepa	onion		live, twisted	stem		Major
sporangium		colony of sporangium infects and damages live bulb			Allium cepa	Onion	Asparagales: Amaryllidaceae	Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998 A Checklist of the Downy Mildews (Peronosporaceae) of the British Isles, Preece, T.F., 2002	/Chromista/Oomycota/Peronosporea/Peronosporales/Peronosporaceae/Peronospora destructor/	Peronospora destructor	onion downy mildew			colony	sporangium	Foodplant / pathogen		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Asparagales/Amaryllidaceae/Allium cepa/	Allium cepa	onion		live	bulb		Major
sporangium		colony of sporangium infects and damages live			Allium fistulosum	Welsh Onion	Asparagales: Amaryllidaceae	A Checklist of the Downy Mildews (Peronosporaceae) of the British Isles, Preece, T.F., 2002	/Chromista/Oomycota/Peronosporea/Peronosporales/Peronosporaceae/Peronospora destructor/	Peronospora destructor	onion downy mildew			colony	sporangium	Foodplant / pathogen		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Asparagales/Amaryllidaceae/Allium fistulosum/	Allium fistulosum	welsh onion		live
sporangium		colony of sporangium infects and damages live bulb			Allium oschaninii	Shallot	Asparagales: Amaryllidaceae	Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998 A Checklist of the Downy Mildews (Peronosporaceae) of the British Isles, Preece, T.F., 2002	/Chromista/Oomycota/Peronosporea/Peronosporales/Peronosporaceae/Peronospora destructor/	Peronospora destructor	onion downy mildew			colony	sporangium	Foodplant / pathogen		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Asparagales/Amaryllidaceae/Allium oschaninii/	Allium oschaninii	shallot		live	bulb		Minor
sporangium		colony of sporangium infects and damages live leaf			Allium oschaninii	Shallot	Asparagales: Amaryllidaceae	Pests, Diseases & Disorders of Garden Plants, Buczacki, S. & Harris, K., 1998 A Checklist of the Downy Mildews (Peronosporaceae) of the British Isles, Preece, T.F., 2002	/Chromista/Oomycota/Peronosporea/Peronosporales/Peronosporaceae/Peronospora destructor/	Peronospora destructor	onion downy mildew			colony	sporangium	Foodplant / pathogen		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Asparagales/Amaryllidaceae/Allium oschaninii/	Allium oschaninii	shallot		live	leaf		Minor
sporangium		colony of sporangium infects and damages live			Allium porrum	Leek	Asparagales: Amaryllidaceae	A Checklist of the Downy Mildews (Peronosporaceae) of the British Isles, Preece, T.F., 2002	/Chromista/Oomycota/Peronosporea/Peronosporales/Peronosporaceae/Peronospora destructor/	Peronospora destructor	onion downy mildew			colony	sporangium	Foodplant / pathogen		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Asparagales/Amaryllidaceae/Allium porrum/	Allium porrum	leek		live
sporangium		colony of sporangium infects and damages live			Allium triquetrum	Three-cornered Garlic	Asparagales: Amaryllidaceae	A Checklist of the Downy Mildews (Peronosporaceae) of the British Isles, Preece, T.F., 2002	/Chromista/Oomycota/Peronosporea/Peronosporales/Peronosporaceae/Peronospora destructor/	Peronospora destructor	onion downy mildew			colony	sporangium	Foodplant / pathogen		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Asparagales/Amaryllidaceae/Allium triquetrum/	Allium triquetrum	three-cornered garlic		live
sporangium		colony of sporangium infects and damages live			Allium ursinum	Ramsons	Asparagales: Amaryllidaceae	A Checklist of the Downy Mildews (Peronosporaceae) of the British Isles, Preece, T.F., 2002	/Chromista/Oomycota/Peronosporea/Peronosporales/Peronosporaceae/Peronospora destructor/	Peronospora destructor	onion downy mildew			colony	sporangium	Foodplant / pathogen		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Asparagales/Amaryllidaceae/Allium ursinum/	Allium ursinum	ramsons		live			Minor

Author & Year	Title	Source
Buczacki, S. & Harris, K., 1998	Pests, Diseases & Disorders of Garden Plants	Collins Photoguide, 2nd edition edition, Collins
Ellis, M.B. & J.P., 1997	Microfungi on Land Plants: An Identification Handbook	2nd (New Enlarged) edition, 868pp, The Richmond Publishing Co. Ltd
Preece, T.F., 2002	A Checklist of the Downy Mildews (Peronosporaceae) of the British Isles	33pp, British Mycological Society

Peronospora destructor (Onion Downy Mildew) may be included in 'fed on by' relations listed under the following higher taxa:

CHROMISTA
(algae)

Fungi s.l.
(fungi (in the broad sense))

Taxonomic hierarchy:

Species	Peronospora destructor (Onion Downy Mildew)
Genus	Peronospora (a genus of downy mildews)
Family	PERONOSPORACEAE (downy mildews)
Order	PERONOSPORALES (downy mildews and white rusts)
Class	PERONOSPOREA (a class of fungoid organisms)
Phylum	OOMYCOTA (a group of mainly plant-parasitic fungi)
Kingdom	CHROMISTA (algae)
Domain	Eukaryota (eukaryotes)
Life	BIOTA (living things)

Peronospora destructor is also a member of:
Fungi s.l. - fungi (in the broad sense) (via Oomycota)
Micromycetes - microfungi (via Oomycota)
Lower Plants - lower plants (via Fungi s.l.)

NBN

NBN (data.nbn.org.uk) has a distribution map for Peronospora destructor (Onion Downy Mildew)

Peronospora destructor (Onion Downy Mildew) may be included in identification literature listed under the following higher taxa:

Peronospora
(a genus of downy mildews)

PERONOSPORACEAE
(downy mildews)

PERONOSPORALES
(downy mildews and white rusts)

OOMYCOTA
(a group of mainly plant-parasitic fungi)

CHROMISTA
(algae)

Eukaryota
(eukaryotes)

BIOTA
(living things)

Fungi s.l.
(fungi (in the broad sense))

Literature listed under the following higher taxa may be relevant to Peronospora destructor (Onion Downy Mildew):

Peronospora
(a genus of downy mildews)

PERONOSPORACEAE
(downy mildews)

PERONOSPORALES
(downy mildews and white rusts)

OOMYCOTA
(a group of mainly plant-parasitic fungi)

CHROMISTA
(algae)

Eukaryota
(eukaryotes)

BIOTA
(living things)

Fungi s.l.
(fungi (in the broad sense))

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