Didymella pomorum (Thüm.) Q. Chen & L. Cai 2015
![Figs12 P. pomorum. Colonies on OA (left) and ME (right) after growing for 7 days in the dark and 4 days in the light at 20°C. © All rights reserved. [Image: AMU]](https://data.landcareresearch.co.nz/Image/AMU/SysPortalThumb)
![Fig. 16 Chlamydospores of P. pomorum (x250). © All rights reserved. [Image: AMY]](https://data.landcareresearch.co.nz/Image/AMY/SysPortalThumb)
![ICMP 6633 on SDA. Creator: Diana Lee. © Landcare Research. [Image: 3G2D]](https://data.landcareresearch.co.nz/Image/3G2D/SysPortalThumb)
![ICMP 6633 on SDA. Creator: Diana Lee. © Landcare Research. [Image: 3G2E]](https://data.landcareresearch.co.nz/Image/3G2E/SysPortalThumb)
![Figs12 P. pomorum. Colonies on OA (left) and ME (right) after growing for 7 days in the dark and 4 days in the light at 20°C. © All rights reserved. [Image: AMU]](https://data.landcareresearch.co.nz/Image/AMU/SysPortalPreview)
![Fig. 16 Chlamydospores of P. pomorum (x250). © All rights reserved. [Image: AMY]](https://data.landcareresearch.co.nz/Image/AMY/SysPortalPreview)
![ICMP 6633 on SDA. Creator: Diana Lee. © Landcare Research. [Image: 3G2D]](https://data.landcareresearch.co.nz/Image/3G2D/SysPortalPreview)
![ICMP 6633 on SDA. Creator: Diana Lee. © Landcare Research. [Image: 3G2E]](https://data.landcareresearch.co.nz/Image/3G2E/SysPortalPreview)
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Details
Details
Didymella pomorum (Thüm.) Q. Chen & L. Cai in Chen et al., Studies in Mycology 82 179 (2015)
Didymella pomorum (Thüm.) Q. Chen & L. Cai 2015
Biostatus
Nomenclature
(Thüm.) Q. Chen & L. Cai
Thüm.
Q. Chen & L. Cai
2015
179
ICN
species
Didymella pomorum
Classification
Synonyms
Associations
View full associations recordhas host
Descriptions
Cunningham (1925a) associated this fungus with "blister disease" of fruit and of laterals of apple and pear trees. It is now known that this fungus is not responsible for this condition but that it is present as a saprophyte in dead bark tissue. The cause of the condition in trees that exhibit this characteristic splitting is still unknown.
Type: Foliicolous Fungi; Description: Conidiomata pycnidial, scattered, subepidermal becoming erumpent, ovoid, rusty brown to black, ostiolate; on spots on leaves or fruit. Conidia cylindrical or ellipsoid, straight to slightly curved, 5–8 × 2–3 μm, smooth, hyaline.
Distribution: Northland, Auckland, Waikato, Bay of Plenty, Wanganui, Wairarapa, Nelson, Mid Canterbury, Central Otago.; 1st Record: Blackmore (1894).
Significance: A common cause of leaf spot and fruit spot of apples and occasionally on leaves of peaches and plums. It is of minor economic importance.; Host(s): Malus ×domestica, Prunus armeniaca, P. avium, P. ×domestica, P. dulcis, P. persica, P. persica var. nucipersica, P. salicina.
REPRESENTATIVE CULTURES: PDDCC 6633, 6634.
COLONY MORPHOLOGY OA: Colonies 55-75 mm diam. after 7 days. Mycelium: cottony, dense with an uneven, tufted surface, pale to dark olivaceous at centre, white at edge. Reverse; grey or saffron. ME: Colonies 64-70 mm. Mycelium; dense, cottony, even in height; dark, occasionally pale, olivaceous. Reverse; dark olivaceous. CHLAMYDOSPORES: Solitary or in long chains or as dictyochlamydospores. They may take several weeks to appear and the number present varies between isolates. CONIDIA: Uniform in shape, oblong with rounded ends. (4.5-)5.5-8(-11) x 2-3(-4.5) µm.
OCCURRENCE: Plurivorous saprophyte.
Taxonomic concepts
Coniothecium chomatosporum sensu auct. NZ
Coniothecium chomatosporum sensu auct. NZ
Didymella pomorum (Thüm.) Q. Chen & L. Cai 2015
Didymella pomorum (Thüm.) Q. Chen & L. Cai 2015
Didymella pomorum (Thüm.) Q. Chen & L. Cai 2015
Peyronellaea pomorum (Thüm.) Aveskamp, Gruyter & Verkley (2010)
Peyronellaea pomorum (Thüm.) Aveskamp, Gruyter & Verkley (2010)
Peyronellaea pomorum (Thüm.) Aveskamp, Gruyter & Verkley
Didymella pomorum (Thüm.) Q. Chen & L. Cai 2015
Phoma pomorum Thüm. 1879 [1878]
Phoma pomorum Thüm. 1879 [1878]
Phoma pomorum Thüm. 1879 [1878]
Didymella pomorum (Thüm.) Q. Chen & L. Cai 2015
Phoma pomorum Thüm. (1879) [1878]
Phoma pomorum Thüm. (1879) [1878]
Phyllosticta alni-glutinosae P. Syd. (1897)
Phyllosticta alni-glutinosae P. Syd. (1897)
Collections
Metadata
2ea66bbd-d88e-441c-91aa-61cdf3b0a8b9
scientific name
Names_Fungi
22 November 2016
22 November 2016
