Genetic differentiation within the European race of Gremmeniella abietina

Hamelin, Richard; Lecours, N.; Hansson, Per; Hellgren, Magnus; Laflamme, G.

doi:10.1016/s0953-7562(96)80099-2

Cited by 57 publications

(71 citation statements)

References 19 publications

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“…Both pathogens cause cankers and produce pycnidia or apothecia on young trees covered with snow in winter (Uotila 1983;Karlman et al 1994;Hamelin et al 1996). Moreover, they share the characteristic of generating high amounts of apothecia, which is genetically determined (Uotila 1992).…”

Section: Discussionmentioning

confidence: 99%

“…STT, also referred to as Northern or B type, is restricted to moderately high altitudes in northern Europe. It affects Picea abies (L.) Karst., Pinus sylvestris L. and P. contorta (Uotila 1983;Hellgren & Hö gberg 1995;Hamelin et al 1996). The Alpine type is found in high altitudes (w2000 m) of the central European Alps infecting Pinus cembra L., P. mugo Turra, Larix lyallii Parl.…”

Section: Introductionmentioning

confidence: 99%

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Spanish population of Gremmeniella abietina is genetically unique but related to type A in Europe

Botella

Tuomivirta²,

Kaitera³

et al. 2010

Fungal Biology

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Spanish population of Gremmeniella abietina is genetically unique but related to type A in Europe

Botella

Tuomivirta²,

Kaitera³

et al. 2010

Fungal Biology

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“…Lodgepole pines are seriously affected by Scleroderris canker in Sweden (Karlman et al 1994). However, another amplitype of the pathogen, as defined by Hamelin et al (1996), is most likely involved and thus care should be taken not to introduce this amplitype into Canada where jack and lodgepole pines could be affected.…”

Section: Discussionmentioning

confidence: 99%

Resistance of Pinus banksiana to the European race of Gremmeniella abietina

Laflamme¹,

Blais²

2005

phyto

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Au début des années 80, plus de 90 % de mortalité causée par Gremmeniella abietina, race européenne, a été relevée dans des plantations de pin rouge (Pinus resinosa) localisées à environ 200 km au nord-ouest de Montréal, Québec, Canada. Les pins gris ( Pinus banksiana) avoisinants ne semblaient pas attaqués. Les forestiers ont donc reboisé ces aires avec des semis de pin gris. Des parcelles d'études de 100 pins gris ont été établies dans trois plantations sur les quatre sélectionnées en 1988. Comme références, des semis de pin rouge ont été plantés dans des conditions semblables dans la quatrième plantation en 1989. Les observations annuelles se sont déroulées de 1989 à 1992. La mortalité des semis de pin rouge atteignait 70 % en 1992 alors que les pins gris des trois sites expérimentaux n'étaient pas attaqués, à l'exception d'une brûlure à l'extrémité des pousses, caractéristique qui permet d'identifier la race au champ. Les symptômes de la race nord-américaine étaient présents à un taux très bas; leur incidence a augmenté sur le site I en 1992. Plus de 10 ans après la plantation, les pins gris montrent une résistance à la race européenne de G. abietina alors que tous les pins rouges sont morts.In the early 1980s, more than 90% of mortality caused by Gremmeniella abietina, European race, was recorded in red pine (Pinus resinosa) plantations 200 km northwest of Montreal, Quebec, Canada. Surrounding jack pines (Pinus banksiana) did not appear to be affected. Consequently, foresters began to plant the affected areas with jack pine seedlings. In 1988, plots of 100 jack pines were established in three of the four selected plantations. As reference, red pine seedlings were planted in 1989 under similar conditions in the fourth plantation. Observations were carried out annually from 1989 to 1992. Mortality of red pine seedlings reached 70% in 1992 while all jack pines on the three experimental sites were free of the disease except for a tip blight, a distinctive feature allowing race identification in the field. The North American race symptoms were present at a very low incidence, but began to increase on site I in 1992. More than 10 years after planting, the jack pine trees still show resistance to the European race of G. abietina while all the red pines died

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“…It rarely produces apothecia in forests [22,41]. No local genetic differentiation was observed in biotype A [15] until the Spanish population was characterised [4,31]. In Spain, G. abietina has been found in northwestern P. halepensis plantations, and it seems to be a monoclonal population as a consequence of a founder effect [4].…”

Section: Introductionmentioning

confidence: 99%

Description and prevalence of a putative novel mycovirus within the conifer pathogen Gremmeniella abietina

et al. 2015

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The European race of Gremmeniella abietina (Lagerberg) Morelet is the causal agent of stem canker and shoot blight on numerous conifers in Europe and North America. It comprises different species and biotypes in which the presence of mycoviruses has been determined. In this report, we describe the full-length sequence of the RNA-dependent RNA polymerase (RdRp) of a putative novel virus, Gremmeniella abietina RNA virus 6 (GaRV6), with 2165 nt and a GC content of 54.7 %. A BLASTp search using the deduced RdRp amino acid sequence confirmed GaRV6 to be related to members of a still unassigned virus taxon, which includes, e.g., Fusarium graminearum dsRNA mycovirus 4 (FgV-4) and the mutualistic Curvularia thermal tolerance virus (CThTV). The prevalence and genetic diversity of GaRV6 was also studied within the European race of G. abietina. We examined 162 isolates originating from Canada, the Czech Republic, Finland, Italy, Montenegro, Serbia, Spain, Switzerland, Turkey and the United States. According to direct specific reverse transcription (RT) PCR screening based on the RdRp sequence, the virus appears to be present only in Spain, where it is relatively abundant but genetically highly uniform.

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Genetic differentiation within the European race of Gremmeniella abietina

Cited by 57 publications

References 19 publications

Spanish population of Gremmeniella abietina is genetically unique but related to type A in Europe

Spanish population of Gremmeniella abietina is genetically unique but related to type A in Europe

Resistance of Pinus banksiana to the European race of Gremmeniella abietina

Description and prevalence of a putative novel mycovirus within the conifer pathogen Gremmeniella abietina

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