Scleroderris Canker, Gremmeniella abietina (Lagerb.) Morelet, in Canada -- an Overview

Sterner, T.E.

doi:10.1007/978-94-009-6107-4_4

Cited by 3 publications

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“…In Quebec, the distribution of the EU race is dramatically different from that published earlier (Sterner 1984, Skilling et al 1986. From 1978 to 198 1, surveys were conducted near the New York State border where the EU race was thought to have originated.…”

Section: Resultsmentioning

confidence: 65%

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Status of the European race of Scleroderris canker in Canada

Laflamme¹,

Hopkin²,

Harrison³

1998

The Forestry Chronicle

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r r i s o n~The European (EU) race of Gremmeniella abietina (Lagerb.) La race europeenne (EU) de Gremmeniella abietina (Lagerb.) Morelet, the causal agent of scleroderris canker of conifers, is a Morelet, I'agent causal du chancre scleroderrien des coniferes, est damaging pathogen in pine forests. In North America, this disun champignon pathogene tres dommageable pour nos forits de ease is found in the northeastem United States and in eastan Canada.pins. En e e r i q u e du Nord, la maladie se retrouve dans le nordResults from surveys conducted across Canada since 1979 are up&-est des Etats-Unis et dans I'est du Canada. Les resultats des ing us on where this disease is found. In Newfoundland, only the releves a travers le Canada depuis 1979 nous pernettent de car-EU = has been worded and it is t~ the Avalon Peninsula tographier la distribution de la maladie. A Terre-Neuve, seule la Contrary to earlier reports in the Maritime provinces, only one pine race EU a ete relevee et elle est restreinte a la peninsule dlAvalon. plantation is infected by the EU race in New Brunswick. In Contrairement a ce qui a ete rapporte anterieurement dans les Ontario, a total of 17 1 plantations are infected and they are clusprovinces Maritimes, seulement une plantation de pins est infectered in the central portion of the southern part of the province.tee par la race EU au Nouveau-Brunswick. En Ontario, un total The number of plantations infected by the EU race in Quebec is de 171 plantations SOnt infectees et elks SOnt gro~pees dans la pOrthe highest in Canada with 749 plantations. In the four provinces, tion centrale du sud de la province. LeS 749 plantations infectees the most infected species is red pine (86% of the infected planPar la race EU au Quebec representent le plus gandnombre de tations), followed by two exotic species, Scots pine (9.5%) and tout le Canada. Dans les quatre provinces, le pin rouge est Austrian pine (3.2%). white pine and jack pine show resistance I'espke la plus infectee (86% des plantations infectees) suivi par to the disease. deux especes exotiques, le pin sylvestre (9,5%) et pin noir d'Autriche (3,2%). Le pin blanc et le pin gris montrent de la resis-

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Section: Resultsmentioning

confidence: 65%

“…This has allowed for clarification of isolates that were in question and helps us to better determine the distribution of the disease. Published maps on the distribution of the EU race in Canada are not up to date and contain errors related to this misidentification (Sterner 1984, Skilling et al 1986, Hopkin and McKenney 1995.…”

Section: Introductionmentioning

confidence: 99%

Status of the European race of Scleroderris canker in Canada

Laflamme¹,

Hopkin²,

Harrison³

1998

The Forestry Chronicle

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“…Morelet (=Ascocalyx abietina) has caused widespread damage in pine forests in North America and in Europe during the past few decades (O'Brien, 1984;Sterner, 1984;Barklund, 1990;Stephan, 1990;Nevalainen & Yli-Kojola, 1990). The potential causes of such damage have been intensively studied.…”

Section: Introductionmentioning

confidence: 99%

The effect of stand density on the susceptibility of Pinus sylvestris to Gremmeniella abietina

Niemelä

Lindgren

Uotila

1992

Scandinavian Journal of Forest Research

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The effect of stand density on the susceptibility of Pinus sylvestris to Gremmeniella abietina. Accepted Sept. 2, 1991. Scand. J. For. Res. 7: 129-133, 1992.The susceptibility of a 20-year-old Scots pine stand to Scleroderris canker caused by Gremmeniella abietina was monitored in relation to stocking density. The data included five densities varying from 800 to 5 000 trees/ha. The degree of damage, as indicated by the proportion of brown needles and the number of dead trees, correlated positively with the stand density. The proportion of dead trees was low at densities below 1 100 trees/ha, but increased linearly with increasing density.

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Comparison of Gremmeniella abietina isolates from Pinus sylvestris and Pinus contorta in terms of conidial morphology and host colonization

Hellgren

1995

European Journal of Forest Pathology

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Gremmeniella abietina isolates from Pinus contorta in northern Sweden produced, in vitro, shorter conidia with fewer septa compared with isolates from Pinus sylvestris in the southern part of the country. After tnycelial inoculation of shoots with G. abietina isoLites from both host species, the resulting necroses were longer in P. sylvestris than in P. contorta. Keeping seedlings in artificial mild winter clitnate or detaching shoots frotn the seedling before inoculation caused longer necroses. No host specificity in colonization was found. Isolates from P. sylvestris caused longer necroses than did isolates from P. contorta, and both types of isolates caused longer necroses in P. sylvestris than in P. contorta. The differences found between the two G. abietina populations probably reflect regional variation in the fungus.

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Scleroderris Canker, Gremmeniella abietina (Lagerb.) Morelet, in Canada -- an Overview

Cited by 3 publications

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Status of the European race of Scleroderris canker in Canada

Status of the European race of Scleroderris canker in Canada

The effect of stand density on the susceptibility of Pinus sylvestris to Gremmeniella abietina

Comparison of Gremmeniella abietina isolates from Pinus sylvestris and Pinus contorta in terms of conidial morphology and host colonization

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