Interactions where Allium fistulosum 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').
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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
has sap sucked by
Neotoxoptera formosana Onion Aphid
Hemiptera: Aphididae
CSL Pest Risk Analysis for Neotoxoptera formosana , MacLeod, A., 2007
/Animalia/Arthropoda/Insecta/Hemiptera/Aphididae/Neotoxoptera formosana/ Neotoxoptera formosana onion aphid Foodplant / sap sucker /Plantae/Tracheophyta/Magnoliopsida/Asparagales/Amaryllidaceae/Allium fistulosum/ Allium fistulosum welsh onion sucks sap of
is parasitised by long covered by epidermis telium
Puccinia porri Leek Rust, Allium Rust
Pucciniales: Pucciniaceae
Checklist of the British and Irish Basidiomycota , Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005
/Fungi/Basidiomycota/Pucciniomycetes/Pucciniales/Pucciniaceae/Puccinia porri/ Puccinia porri leek rust, allium rust long covered by epidermis telium
Foodplant / parasite /Plantae/Tracheophyta/Magnoliopsida/Asparagales/Amaryllidaceae/Allium fistulosum/ Allium fistulosum welsh onion long covered by epidermis telium parasitises
is parasitised by uredium
Puccinia porri Leek Rust, Allium Rust
Pucciniales: Pucciniaceae
Checklist of the British and Irish Basidiomycota , Legon, N.W. & Henrici, A. with Roberts, P.J., Spooner, B.M. & Watling, R., 2005
/Fungi/Basidiomycota/Pucciniomycetes/Pucciniales/Pucciniaceae/Puccinia porri/ Puccinia porri leek rust, allium rust uredium
Foodplant / parasite /Plantae/Tracheophyta/Magnoliopsida/Asparagales/Amaryllidaceae/Allium fistulosum/ Allium fistulosum welsh onion uredium parasitises
(live)
live may be infected and damaged by colony of sporangium
Peronospora destructor Onion Downy Mildew
Peronosporales: Peronosporaceae
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 colony of sporangium infects and damages live
root
root may be infected and damaged by usually solitary, immersed, then erumpent pycnidium of phoma anamorph
Pyrenochaeta terrestris Pink Root Of Onion - causative organism
Pyrenochaeta terrestris , Punithalingam, E. & Holliday, P., 1998
/Fungi/Ascomycota/Pyrenochaeta terrestris/ Pyrenochaeta terrestris pink root of onion (causative organism) usually solitary, immersed, then erumpent pycnidium phoma anamorph
Foodplant / pathogen /Plantae/Tracheophyta/Magnoliopsida/Asparagales/Amaryllidaceae/Allium fistulosum/ Allium fistulosum welsh onion root usually solitary, immersed, then erumpent pycnidium of phoma anamorph infects and damages root
NBN (data.nbn.org.uk)
has a distribution map for Allium fistulosum (Welsh Onion)
