Pyrenochaeta terrestris (H.N. Hansen) Gorenz, J.C. Walker & Larson
(Pink Root Of Onion - causative organism)

Interactions where Pyrenochaeta terrestris 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
phoma anamorph (usually solitary, immersed, then erumpent)		usually solitary, immersed, then erumpent pycnidium of phoma anamorph infects and damages root			Allium ampeloprasum	Wild Leek	Asparagales: Amaryllidaceae	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 ampeloprasum/	Allium ampeloprasum	wild leek			root
phoma anamorph (usually solitary, immersed, then erumpent)		usually solitary, immersed, then erumpent pycnidium of phoma anamorph infects and damages root			Allium cepa	Onion	Asparagales: Amaryllidaceae	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		UK and/or Eire	/Plantae/Tracheophyta/Magnoliopsida/Asparagales/Amaryllidaceae/Allium cepa/	Allium cepa	onion			root		Major
phoma anamorph (usually solitary, immersed, then erumpent)		usually solitary, immersed, then erumpent pycnidium of phoma anamorph infects and damages root			Allium cepa var aggregatum	Multiplier Onion, Shallot	Asparagales: Amaryllidaceae	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 cepa var. aggregatum/	Allium cepa var. aggregatum	multiplier onion, shallot			root
phoma anamorph (usually solitary, immersed, then erumpent)		usually solitary, immersed, then erumpent pycnidium of phoma anamorph infects and damages root			Allium fistulosum	Welsh Onion	Asparagales: Amaryllidaceae	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
phoma anamorph (usually solitary, immersed, then erumpent)		usually solitary, immersed, then erumpent pycnidium of phoma anamorph infects and damages root			Allium sativum	Garlic	Asparagales: Amaryllidaceae	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 sativum/	Allium sativum	garlic			root
phoma anamorph (usually solitary, immersed, then erumpent)		usually solitary, immersed, then erumpent pycnidium of phoma anamorph infects and damages root			Allium schoenoprasum	Chives	Asparagales: Amaryllidaceae	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 schoenoprasum/	Allium schoenoprasum	chives			root

Author & Year	Title	Source
Punithalingam, E. & Holliday, P., 1998	Pyrenochaeta terrestris	I.M.I. Descriptions of Pathogenic Fungi and Bacteria CMI Descriptions of Pathenogenic Fungi and Bacteria Sheet 397.

Pyrenochaeta terrestris (Pink Root Of Onion - causative organism) may also be included in 'feeds on' relations listed under the following higher taxa:

FUNGI
(true fungi)

Pyrenochaeta terrestris (Pink Root Of Onion - causative organism) may be included in 'fed on by' relations listed under the following higher taxa:

FUNGI
(true fungi)

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

Taxonomic hierarchy:

Anamorphic Species	Pyrenochaeta terrestris (Pink Root Of Onion - causative organism)
Species	Setophoma terrestris (a fungus)
Subphylum	PEZIZOMYCOTINA (a subphylum of ascomycetes)
Phylum	ASCOMYCOTA (spore shooters, ascomycete)
Kingdom	FUNGI (true fungi)
Domain	Eukaryota (eukaryotes)
Life	BIOTA (living things)

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

NBN

NBN (data.nbn.org.uk) has a distribution map for Pyrenochaeta terrestris (Pink Root Of Onion - causative organism)

Identification Works

Handling & Magnification	Author	Year	Title	Source
	Punithalingam, E. & Holliday, P.	1998	Pyrenochaeta terrestris	I.M.I. Descriptions of Pathogenic Fungi and Bacteria CMI Descriptions of Pathenogenic Fungi and Bacteria Sheet 397.

Pyrenochaeta terrestris (Pink Root Of Onion - causative organism) may also be included in identification literature listed under the following higher taxa:

ASCOMYCOTA
(spore shooters, ascomycete)

FUNGI
(true fungi)

Eukaryota
(eukaryotes)

BIOTA
(living things)

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

Literature listed under the following higher taxa may be relevant to Pyrenochaeta terrestris (Pink Root Of Onion - causative organism):

ASCOMYCOTA
(spore shooters, ascomycete)

FUNGI
(true fungi)

Eukaryota
(eukaryotes)

BIOTA
(living things)

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

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