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Venturia inaequalis (Cooke) G. Winter 1875

Scientific name record
Names_Fungi record source
Is NZ relevant
This is the current name
This record has collections
This record has descriptions
This is foreign

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Exotic
Present
New Zealand
Political Region
The earliest record in NZ is from 1921 (PDD 1534) [BSW, 24 April 2023]

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G. Winter
Cooke
(Cooke) G. Winter
1875
no. 261
ICN
species
Venturia inaequalis

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inaequalis

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Scab on leaves and developing fruits of loquats is extremely severe in Auckland and North Auckland districts. As these fruits are not grown commercially it is of minor importance. If these fruits are to be grown it is important to plant only resistant varieties.
Type: Foliicolous Fungi; Description: Mycelium internal, subcuticular, becoming locally thickened to form erumpent pustules, which push aside a strip of cuticle. Conidiophores aggregated, arising from upper cells of the exposed pustule, flask shaped, pale brown to brown, smooth or verruculose, up to 40 m long, bearing many closely-spaced annellations. Conidia obpyriform, 0-septate, 14–21 × 7–10 μm, pale brown to olivaceous brown, base truncate. Leaf spots circular or irregular, dark olivaceous to blackish olive, velvety, on leaves and fruit.
Distribution: Northland, Auckland, Bay of Plenty, Taranaki, Nelson, Southland.; 1st Record: Brien & Dingley (1951: as Spilocaea eriobotryae).
Significance: Scab on leaves and fruits can cause considerable damage to Eriobotrya japonica (loquat) in Northland and Auckland (Dingley 1969).; Host(s): Eriobotrya japonica, Pyracantha angustifolia.

Venturia inaequalis (Cooke) G. Winter 1875

Type: Foliicolous Fungi; Description: Ascomata stromatic, perithecial, aggregated in groups, immersed, globose, brown, 0.1–0.2 mm in diameter, ostiole prominent, with or without blackish brown setae; on both sides of fallen leaves. Asci saccate, 40–70 μm long. Ascospores elliptical, 1-septate, 12–16 × 5–7 μm, smooth, olivaceous brown. Conidia napiform, 1-septate, 16–24 × 7–10 μm, smooth, yellowish brown.
Distribution: Auckland, Waikato, Wanganui, Hawkes Bay, Nelson, Fiordland, Mid Canterbury, South Canterbury, Dunedin, Chatham Islands.; 1st Record: Kirk (1894: as Fusicladium dendriticum).
Significance: ‘Black spot’, caused by V. inaequalis, is the most serious disease of apples in New Zealand. On living leaves, shoots, and fruit, only the Fusicladium state is found, forming olivaceous brown, velvety, often coalescing colonies. Infected leaves are often distorted and fall prematurely. On fruit, lesions appear as rough corky sunken areas with greyish edges. If not controlled by fungicides, black spot may cause a total crop loss (Atkinson 1971). The fungus lives as a saprobe on fallen leaves through the winter, producing ascomata in the spring.; Host(s): Malus ×domestica.

Scab disease on leaves of Amelanchier sp. (juneberry). A new fungus species. (IMI 233721 (holotypus), LINC 9656, PDD 41810, Canterbury: Christchurch, R. C. Close, Nov. 1978.).

Colonies amphigenous, orbicular to irregular, or effuse and following veins; olivaceous brown and velvety. Mycelium subculticular, hyaline or light brown. Conidiophores swollen at the base, and of varying length depending on the number of annellations; 10-23 µm long, 5-6 µm wide at annellations. Conidia obpyriform to obclavate, pale olivaceous brown, smooth, non-septate; 12-21.6 (17.5) µm long, 4.8-8.4 (7.0) µm wide at the broadest part, truncated at the base.

On leaves of Amelanchier sp. (juneberry), causing a scab disease.

Coloniae amphygenae, orbiculares vel irregulares vel effusae venasque sequentes; olivaceo-brunneae, velveto similes. Mycelium subcuticulare, hyalinum vel pallide brunneum. Conidiophora basi inflata, in longitudinem variabilia numero annelationum; 10-23 µm longa, annelationibus 5-6 µm latis. Conidia obpyriformia vel obclavata, pallide olivaceo-brunnea, levia, non-septata, 12-21.6 (17.5) µm longa, 4.8-8.4 µm lata in parte latissima, basi truncata. Habitat in foliis speciei Amelanchier, morbum crustaceum efficiens, Canterbury, New Zealand, November 1978.

This species of Spilocaea differs from others described by Ellis (1971, 1976). Although similar to S. pyracanthae (Otth.) Arx, it differs markedly in the shape of the conidia, which here are obpyriform to obclavate and pointed at the distal end, like S. photinicola (McClain) Ellis, but non-septate. The fungus was confirmed as a separate species by Mr . M. Kirk, CMI.
 

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Fusicladium dendriticum (Wallr.) Fuckel (1870) [1869-70]
Fusicladium pomi (Fr.) Lind 1913
Venturia inaequalis (Cooke) G. Winter 1875
Sphaerella inaequalis Cooke
Venturia inaequalis (Cooke) G. Winter 1875
Spilocaea pomi Fr.
Venturia inaequalis (Cooke) G. Winter 1875
Venturia inaequalis (Cooke) G. Winter 1875
Venturia inaequalis (Cooke) G. Winter (1875)
Venturia inaequalis (Cooke) G. Winter 1875
Venturia inaequalis (Cooke) G. Winter
Venturia inaequalis (Cooke) G. Winter 1875
Venturia inaequalis (Cooke) G. Winter
Venturia inaequalis (Cooke) G. Winter 1875
Venturia inaequalis (Cooke) G. Winter 1875
Venturia inaequalis (Cooke) G. Winter 1875
Venturia inaequalis (Cooke) G. Winter (1875)
Venturia inaequalis (Cooke) G. Winter 1875
Venturia inaequalis (Cooke) G. Winter (1875)
Venturia inaequalis (Cooke) G. Winter 1875
Venturia inaequalis (Cooke) G. Winter (1875)
Venturia inaequalis (Cooke) G. Winter 1875
Venturia inaequalis (Cooke) G. Winter (1875)
Venturia inaequalis (Cooke) G. Winter 1875
Venturia inaequalis (Cooke) G. Winter (1875)
Venturia inaequalis (Cooke) G. Winter 1875
Venturia inaequalis (Cooke) G. Winter (1875)
Venturia inaequalis (Cooke) G. Winter 1875
Venturia inaequalis (Cooke) G. Winter (1875)
Venturia inaequalis (Cooke) G. Winter 1875
Venturia inaequalis (Cooke) G. Winter (1875)
Venturia inaequalis (Cooke) G. Winter 1875
Venturia inaequalis (Cooke) G. Winter
Venturia inaequalis (Cooke) G. Winter 1875
Venturia inaequalis (Cooke) G. Winter (1875)
Venturia inaequalis (Cooke) G. Winter 1875
Venturia inaequalis (Cooke) G. Winter (1875)
Venturia inaequalis (Cooke) G. Winter 1875
Venturia inaequalis (Cooke) G. Winter (1875)
Venturia inaequalis (Cooke) G. Winter 1875
Venturia inaequalis (Cooke) G. Winter
Venturia inaequalis (Cooke) G. Winter 1875
Venturia inaequalis (Cooke) G. Winter (1875)
Venturia inaequalis (Cooke) G. Winter 1875
Venturia inaequalis (Cooke) G. Winter (1875)
Venturia inaequalis (Cooke) G. Winter 1875
Venturia inaequalis (Cooke) G. Winter
Venturia inaequalis (Cooke) G. Winter 1875
Venturia inaequalis (Cooke) G. Winter 1875
Venturia inaequalis (Cooke) G. Winter (1875)
Venturia inaequalis (Cooke) G. Winter 1875
Venturia inaequalis (Cooke) G. Winter
Venturia inaequalis (Cooke) G. Winter 1875
Venturia inaequalis (Cooke) G. Winter (1875)

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taxonomic status
Has anamorph taxon Spilocaea pomi

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1cb1ab63-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
24 April 2023
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