Globisporangium ultimum (Trow) Uzuhashi, Tojo & Kakish. 2010
![ICMP 9267 - Pythium ultimum on PDA media obverse. Creator: Elsa Paderes. © Landcare Research. [Image: 2BEA]](https://data.landcareresearch.co.nz/Image/2BEA/SysPortalThumb)
![ICMP 9267 - Pythium ultimum on PDA media reverse. Creator: Elsa Paderes. © Landcare Research. [Image: 2BEB]](https://data.landcareresearch.co.nz/Image/2BEB/SysPortalThumb)
![ICMP 2981 - Pythium ultimum on PDA media obverse. Creator: Elsa Paderes. © Landcare Research. [Image: 2BH0]](https://data.landcareresearch.co.nz/Image/2BH0/SysPortalThumb)
![ICMP 2981 - Pythium ultimum on PDA media reverse. Creator: Elsa Paderes. © Landcare Research. [Image: 2BH1]](https://data.landcareresearch.co.nz/Image/2BH1/SysPortalThumb)
![ICMP 2982 - Pythium ultimum on PDA media obverse. Creator: Elsa Paderes. © Landcare Research. [Image: 2FH9]](https://data.landcareresearch.co.nz/Image/2FH9/SysPortalThumb)
![ICMP 2982 - Pythium ultimum on PDA media reverse. Creator: Elsa Paderes. © Landcare Research. [Image: 2FHA]](https://data.landcareresearch.co.nz/Image/2FHA/SysPortalThumb)
![ICMP 3341 - Pythium ultimum Trow on PDA media obverse. Creator: Elsa Paderes. © Landcare Research. [Image: 2Z5K]](https://data.landcareresearch.co.nz/Image/2Z5K/SysPortalThumb)
![ICMP 3341 - Pythium ultimum Trow on PDA media reverse. Creator: Elsa Paderes. © Landcare Research. [Image: 2Z5L]](https://data.landcareresearch.co.nz/Image/2Z5L/SysPortalThumb)
![ICMP 2982 Pythium ultimum Trow on PDA media obverse. Creator: Elsa Paderes. © Landcare Research. [Image: 2ZIU]](https://data.landcareresearch.co.nz/Image/2ZIU/SysPortalThumb)
![ICMP 2982 Pythium ultimum Trow on PDA media reverse. Creator: Elsa Paderes. © Landcare Research. [Image: 2ZIV]](https://data.landcareresearch.co.nz/Image/2ZIV/SysPortalThumb)
![ICMP 9267 - Pythium ultimum on PDA media obverse. Creator: Elsa Paderes. © Landcare Research. [Image: 2BEA]](https://data.landcareresearch.co.nz/Image/2BEA/SysPortalPreview)
![ICMP 9267 - Pythium ultimum on PDA media reverse. Creator: Elsa Paderes. © Landcare Research. [Image: 2BEB]](https://data.landcareresearch.co.nz/Image/2BEB/SysPortalPreview)
![ICMP 2981 - Pythium ultimum on PDA media obverse. Creator: Elsa Paderes. © Landcare Research. [Image: 2BH0]](https://data.landcareresearch.co.nz/Image/2BH0/SysPortalPreview)
![ICMP 2981 - Pythium ultimum on PDA media reverse. Creator: Elsa Paderes. © Landcare Research. [Image: 2BH1]](https://data.landcareresearch.co.nz/Image/2BH1/SysPortalPreview)
![ICMP 2982 - Pythium ultimum on PDA media obverse. Creator: Elsa Paderes. © Landcare Research. [Image: 2FH9]](https://data.landcareresearch.co.nz/Image/2FH9/SysPortalPreview)
![ICMP 2982 - Pythium ultimum on PDA media reverse. Creator: Elsa Paderes. © Landcare Research. [Image: 2FHA]](https://data.landcareresearch.co.nz/Image/2FHA/SysPortalPreview)
![ICMP 3341 - Pythium ultimum Trow on PDA media obverse. Creator: Elsa Paderes. © Landcare Research. [Image: 2Z5K]](https://data.landcareresearch.co.nz/Image/2Z5K/SysPortalPreview)
![ICMP 3341 - Pythium ultimum Trow on PDA media reverse. Creator: Elsa Paderes. © Landcare Research. [Image: 2Z5L]](https://data.landcareresearch.co.nz/Image/2Z5L/SysPortalPreview)
![ICMP 2982 Pythium ultimum Trow on PDA media obverse. Creator: Elsa Paderes. © Landcare Research. [Image: 2ZIU]](https://data.landcareresearch.co.nz/Image/2ZIU/SysPortalPreview)
![ICMP 2982 Pythium ultimum Trow on PDA media reverse. Creator: Elsa Paderes. © Landcare Research. [Image: 2ZIV]](https://data.landcareresearch.co.nz/Image/2ZIV/SysPortalPreview)
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Details
Details
Globisporangium ultimum (Trow) Uzuhashi, Tojo & Kakish., Mycoscience 51 363 (2010)
Globisporangium ultimum (Trow) Uzuhashi, Tojo & Kakish. 2010
Nomenclature
(Trow) Uzuhashi, Tojo & Kakish.
Trow
Uzuhashi, Tojo & Kakish.
2010
363
ICN
species
Globisporangium ultimum
Classification
Synonyms
Associations
View full associations recordhas host
Descriptions
It commonly occurs throughout New Zealand associated wide damping-off of seedlings in nursery rows and in newly sown crops. It may be controlled by seed dusting prior to sowing. Soil drenching with an organic fungicide such as captan may be used if damping-off due to Pythium develops in seed pans in nurseries. Copper fungicides may be used-but with caution, as with some seedlings it gives serious root burn. Brien (1940b) associated it with a storage rot of potatoes known as "leak", where it may be of considerable economic importance.
Type: Radicicolous Fungi; Description: Colonies on corn meal agar with cottony white aerial mycelium, main hyphae up to 11 μm wide. Sporangia terminal or intercalary, globose to subglobose, 10–30 μm in diameter. Oogonia terminal, globose, 19–27 μm in diameter, smooth. Antheridia 1–2 per oogonium, sessile, arising close to the apex of the oogonial stalk. Oospores aplerotic, 14–22 μm in diameter.
Distribution: Northland, Auckland, Bay of Plenty, Rangitikei, Wanganui, Wellington, Gisborne, Hawkes Bay, Wairarapa, Marlborough, Mid Canterbury, South Canterbury, Dunedin.; 1st Record: Brien & Dingley (1953).
Significance: A common and widespread cause of damping-off and root rot in seedlings. Reported to be highly pathogenic to roots of vegetable seedlings (Robertson 1976). In a survey of forest nursery diseases it was the most commonly found pathogen, causing periodic severe root rot in Larix decidua, Pinus nigra subsp. laricio, P. radiata, and Pseudotsuga menziesii (Bassett 1961).; Host(s): Acacia leprosa, Agathis australis, Araucaria heterophylla, Chamaecyparis lawsoniana, Citrus sp., Correa ×harrisii, Cupressus lusitanica, Dodonaea viscosa, Goodia lotifolia, Humulus lupulus, Larix decidua, Malus ×domestica, Persea americana, Picea sitchensis, Pinus nigra subsp. laricio, P. radiata, Pseudotsuga menziesii, Vitis vinifera.
Taxonomic concepts
Pythium ultimum Trow 1901
Pythium ultimum Trow (1901)
Pythium ultimum Trow (1901)
Pythium ultimum Trow (1901)
Pythium ultimum Trow (1901)
Global name resources
Collections
Metadata
fb69c775-35a7-4c23-8fb2-2d0405af36c9
scientific name
Names_Fungi
17 November 2013
12 November 2021
