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Colletotrichum acutatum J.H. Simmonds 1968

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Colletotrichum acutatum J.H. Simmonds, Queensland J. Agric. Animal Sci. 25 178A (1968)
Colletotrichum acutatum J.H. Simmonds 1968

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Uncertain
Present
New Zealand
Political Region

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J.H. Simmonds
J.H. Simmonds
1968
178A
ICN
Colletotrichum acutatum J.H. Simmonds 1968
Australia
species
Colletotrichum acutatum

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Colletotrichum acutatum J.H. Simmonds 1968

Gilmour (1965c) recorded that terminal needles of one-year-old [Pinus radiata] seedlings in nursery beds at Woodhill and Kumeu in North Auckland were attacked during early spring and autumn by Gloeosporium sp. Distortion of the terminal stem led to stunted plants that were unfit for planting out. In many cases, after a year, lateral shoots developed from the base of the plant. The disease led to considerable losses in these nurseries. Gilmour (1966b) recommended spraying with captan plus P.M.C. for its control.

Colletotrichum acutatum J.H. Simmonds 1968

Type: Caulicolous Fungi; Description: Conidiomata acervular, aggregated, often confluent; setae, where present, 25–64 × 2–3 μm, brown; on ripe fruit, flowers, and young stems. Conidia cylindrical to fusiform, 0-septate, 10–15 × 3–4 μm, smooth, hyaline; conidial masses salmon pink. Appressoria globose.
Distribution: Northland, Auckland, Bay of Plenty, Taupo.; 1st Record: Dingley & Gilmour (1972).
Notes: Identifications based on morphological characters may require molecular re-evaluation. See also Colletotrichum gloeosporioides (p. 128).
Significance: Described as a primary parasite causing a ripe fruit rot and as a saprobe on moribund plant tissue (Dingley & Gilmour 1972). A morphologically indistinguishable forma specialis of this species (Colletotrichum acutatum f.sp. pineum) is pathogenic to pines.; Host(s): Actinidia chinensis, A. deliciosa, A. polygama, Annona cherimola, Cypho-mandra betacea, Feijoa sellowiana, Jasminum mesnyi, Lupinus arboreus, Persea americana, Vaccinium corymbosum.
Type: Caulicolous Fungi; Description: This forma specialis is morphologically identical to Colletotrichum acutatum but differs in its pathogenicity (see below under SIGNIFICANCE).
Distribution: Northland, Auckland, Waikato, Bay of Plenty, Taupo, Rangitikei, Wanganui, Gisborne, Nelson.; 1st Record: Gilmour (1965b: as Gloeosporium sp.).
Significance: Dingley & Gilmour (1972) found that isolates from lesions on seedlings of Pinus spp., identified according to morphological criteria as Colletotrichum acutatum, were pathogenic to Lupinus arboreus, L. angustifolius, Lathyrus odoratus, Pinus spp., and Vicia sativa. Isolates from the two Lupinus species growing with young P. radiata plants in the field infected P. radiata seedlings. Isolates from L. arboreus growing on sand dunes were not pathogenic to P. radiata, although they infected other legumes. Isolates from Lathyrus odoratus were pathogenic to legumes but not to pines. Isolates from ripe fruit rots were not pathogenic to either pines or legumes. Isolates from all sources caused ripe fruit rot. The forma specialis causes a serious disease known as ‘terminal crook’ in Pinus radiata seedlings. The disease is most common in young (<1 year old) seedlings but older seedlings are occasionally infected. There is no record of the disease developing in seedlings that have been planted out on a forest site. The fungus survives on plant debris in the nursery beds and conidia are dispersed by water splash. Conidia landing on terminal needles of young seedlings germinate and hyphae quickly penetrate the stem, usually killing immature tissue on one side only. Uninjured tissue continues to grow and the terminal shoot curves over, assuming the typical shepherd’s crook shape. Infected needles die and although apical growth slows down, diameter growth appears to be stimulated since the stem becomes thicker and stiffer than normal. Affected seedlings remain in a dormant state until one of the lateral buds on the upper stem develops and grows into a dominant leader. This recovery may occur in the same growing season if the initial infection is very early and there is no reinfection. Under warm, humid conditions the disease can spread very rapidly. Infected seedlings are usually not plantable, resulting in serious economic loss to the nursery.; Host(s): Lupinus angustifolius, L. arboreus, Pinus contorta, P. elliottii, P. muricata, P. nigra subsp. nigra, P. nigra subsp. laricio, P. pinaster, P. ponderosa, P. radiata.

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Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum J.H. Simmonds (1968)
Colletotrichum acutatum f.sp. pineum Dingley & J.W. Gilmour (1972)
Colletotrichum acutatum f.sp. pineum Dingley & J.W. Gilmour
Colletotrichum acutatum J.H. Simmonds 1968
Colletotrichum acutatum f.sp. pineum Dingley & J.W. Gilmour (1972)
Colletotrichum acutatum f.sp. pineum Dingley & J.W. Gilmour (1972)
Colletotrichum acutatum f.sp. pineum Dingley & J.W. Gilmour (1972)
Colletotrichum acutatum f.sp. pineum Dingley & J.W. Gilmour (1972)
Colletotrichum fructigenum sensu auct. NZ

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Colletotrichum acutatum J.H. Simmonds 1968
[Not available]
Colletotrichum acutatum J.H. Simmonds 1968
Australia
Colletotrichum acutatum J.H. Simmonds 1968
Cook Islands
Colletotrichum acutatum J.H. Simmonds 1968
Micronesia
Colletotrichum acutatum J.H. Simmonds 1968
Micronesia, Federated States Of
Colletotrichum acutatum J.H. Simmonds 1968
New Zealand
Colletotrichum acutatum J.H. Simmonds 1968
New Zealand
Auckland
Colletotrichum acutatum J.H. Simmonds 1968
New Zealand
Bay of Plenty
Colletotrichum acutatum J.H. Simmonds 1968
New Zealand
Gisborne
Colletotrichum acutatum J.H. Simmonds 1968
New Zealand
Hawkes Bay
Colletotrichum acutatum J.H. Simmonds 1968
New Zealand
Nelson
Colletotrichum acutatum J.H. Simmonds 1968
New Zealand
New Zealand
Colletotrichum acutatum J.H. Simmonds 1968
New Zealand
Northland
Colletotrichum acutatum J.H. Simmonds 1968
New Zealand
Stewart Island
Colletotrichum acutatum J.H. Simmonds 1968
New Zealand
Taranaki
Colletotrichum acutatum J.H. Simmonds 1968
New Zealand
Taupo
Colletotrichum acutatum J.H. Simmonds 1968
New Zealand
Waikato
Colletotrichum acutatum J.H. Simmonds 1968
New Zealand
Wanganui
Colletotrichum acutatum J.H. Simmonds 1968
New Zealand
Wellington
Colletotrichum acutatum J.H. Simmonds 1968
Niue
Colletotrichum acutatum J.H. Simmonds 1968
Solomon Islands
Colletotrichum acutatum J.H. Simmonds 1968
Tonga
Colletotrichum acutatum J.H. Simmonds 1968
United States
Colletotrichum acutatum J.H. Simmonds 1968
Vanuatu

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taxonomic status
C. acutatum has been widely used in a broad species concept, to include many of the species accepted within the C. acutatum complex by Damm et al. 2012.

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1cb1841f-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
2 October 2012
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