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Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]

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Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]

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Exotic
Present
New Zealand
Political Region

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(Lebert & Cohn) J. Schröt.
Lebert & Cohn
J. Schröt.
1886
1889
236
ICN
species
Phytophthora cactorum

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Click to collapse Associations Info

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Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]

Smith (1950) showed that the condition known as sour sap in apple trees was primarily due to a collar rot caused by Phytophihora cactorum. He showed that the fungus also attacked gooseberries and hops. It is common in Auckland (Huapai), Wellington (Greytown), and Nelson (Redwood Valley) districts. Smith (1955b) (1955c) observed that some apple rootstocks were resistant to the disease. Woodhead (1958), in a survey carried out in Nelson and Marlborough provinces, showed that in 69 apple orchards infected trees were found, especially in the variety Cox's Orange; he noted that poor drainage was a contributing factor. Newhook and Geldermalsen (1962) indicated that P. cactorum was also present in the root rot disease complex in Moutere causing die-back of apple trees. Control measures include the improvement of soil drainage and the application of soil drenches such as a copper fungicide or captan. Newhook (1959) showed that P. cactorum was associated with the death of Pinus radiata and other conifers in shelter hedges in Auckland and the North Auckland districts. It sometimes occurs as a fruit rot of strawberries causing the disease known as leathery fruit.

Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]

Type: Radicicolous Fungi; Description: Colonies on agar slightly radiate with scant fluffy aerial mycelium. Chlamydospores produced by some but not all isolates, mostly terminal, 25–40 μm in diameter. Sporangia mostly terminal, broadly ellipsoidal to ovoid to spherical, 26–35 × 22–30 μm, distinctly papillate. Oogonia globose, 20–36 μm in diameter, smooth, hyaline. Antheridia paragynous, spherical to club-shaped. Oospores plerotic, 18–30 μm in diameter.
Distribution: Northland, Auckland, Coromandel, Waikato, Bay of Plenty, Taupo, Wellington, Gisborne, Hawkes Bay, Wairarapa, Nelson, North Canterbury, Dunedin.; 1st Record: Smith (1950); Cockayne (1915: as ‘sour sap’ of apples).
Significance: Associated in the late 1950s with mortality of 20-year-old or older conifers in farm shelterbelts growing on heavy clay soils, after prolonged periods of waterlogging (Newhook 1959). No damage to trees growing in plantations has been found. The fungus is associated with rootlet rot in young seedlings of some important plantation trees (Chamaecyparis lawsoniana, Cupressus macrocarpa, Pinus radiata) (Newhook 1959).; Host(s): Actinidia deliciosa, Chamaecyparis lawsoniana, Cupressus macrocarpa, Cyphomandra betacea, Feijoa sellowiana, Hebe odora, Malus ×domestica, Meryta sinclairii, Myoporum parvifolium, Phebalium squameum, Pinus radiata, Pyrus communis, Rhododendron sp., Ribes uva-crispa var. sativum, Rubus idaeus.

Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]

records of P. cactorum ex Pinus radiata in NZ may be based on misdientifications "Isolates of a Phytophthora species identified as P. cactorum by D. J. Stamps of the Commonwealth Mycological Institute, Kew (IMI 158986, IMI 185987), were obtained from diseased P. radiata seedlings in a nursery near Dunedin in 1971, although these isolates were lost and and could not be used in this study. Isoaltes identified morphologically as P. cactorum from P. radiata in New Zealand may therefore have been P. aleatoria; however, this cannot be confirmed."

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Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. (1886) [1889]

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Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
[Not available]
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
Lao People's Democratic Republic
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
New Zealand
Auckland
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
New Zealand
Bay of Plenty
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
New Zealand
Hawkes Bay
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
New Zealand
Mid Canterbury
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
New Zealand
Nelson
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
New Zealand
New Zealand
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
New Zealand
North Canterbury
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
New Zealand
Taranaki
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
New Zealand
Wairarapa
Phytophthora cactorum (Lebert & Cohn) J. Schröt. 1886 [1889]
New Zealand
Wellington

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1cb19b06-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
3 March 2000
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