The influence of pine twist rust (Melampsora pinitorqua) on growth and development of Scots pine (Pinus sylvestris)

Martinsson, O.

doi:10.1111/j.1439-0329.1985.tb00873.x

Cited by 18 publications

(13 citation statements)

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“…The physiological stage of the host at the time of dispersal of basidiospores can also differ between years; thus observed genetic correlations will not be stable over the long term since, in actuality, they concern different traits. Such instability between years in rust susceptibility was observed by Martinsson (1985) in experiments under natural conditions. The degree of instability may be increased in artificial inoculation experiments in which spore dispersal may target different host growth rhythm phases in different years.…”

Section: Correlationsmentioning

confidence: 61%

“…Trees that are tall could be highly rust resistant in one environment while being susceptible in another. Thus in trying to explain the earlier reported positive phenotypic relations between fast-growing and rust-sensitive pine individuals (Klingstrom 1969;Martinsson 1980Martinsson , 1987 environmental as well as genetic relations must be considered; for example, the same environmental conditions may favor both growth and rust susceptibility. Furthermore, the cited studies comprised a rather restricted sample of trees without any distinctive population or family structure.…”

Section: Correlationsmentioning

confidence: 99%

“…Earlier studies have revealed a significant genetic family component in Scots pine rust resistance and a phenotypic association between fast growth and rust occurrence on individual pines (Klingstrom 1969;Martinsson 1980Martinsson , 1987. However, Scots pine population structure in terms of rust resistance has not been studied, nor has anyone reported on the genetic relationships between host characters under artificial selection and pathogen resistance.…”

mentioning

confidence: 99%

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Is Pinus sylvestris Resistance to Pine Twist Rust Associated with Fitness Costs or Benefits?

Andersson¹,

Danell²

1997

Evolution

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Seven-year-old Pinus sylvestris were studied in two field trials with respect to height growth and injury caused by the fungal pathogen Melampsora pinitorqua. Each trial comprised single-tree progenies from two to 11 parent trees from each of 45 pine populations in northern Sweden (open pollinated) and Finland (control pollinated with a pollen mixture from 22 north Swedish trees). Heritability estimates were in the range of 6-18%. Most of genetic variation in height growth and rust resistance in Swedish populations and in height growth in Finnish populations occurred within populations (86-100%). In populations of Finnish origin variation in rust resistance consisted of more equal among-and within-population components (68% and 32%, respectively). Family genetic correlations between pathogen resistance and tree height the previous year (disease-free environment) were positive among Finnish populations and Swedish coast populations,suggestingthat pathogenresistance confers fitness benefitseven in the absence of disease, whereas Swedish inland populations showed a negative correlation indicative of fitness costs. Patterns of genetic correlations at the population level tended to be just the reverse compared with those found at the family level. No genotype X trial interactionswere detected for any of the examinedcharacters.Prerequisitesfor establishment of a genecological balance between host and parasite are discussed.

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Section: Correlationsmentioning

confidence: 61%

Section: Correlationsmentioning

confidence: 99%

mentioning

confidence: 99%

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Is Pinus sylvestris Resistance to Pine Twist Rust Associated with Fitness Costs or Benefits?

Andersson¹,

Danell²

1997

Evolution

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“…Höhn.) and by Downloaded by [University of Cambridge] at 19:42 04 January 2015 Martinsson (1985) in studies of pine twist rust (Metampsora pinitorqua (Braun) Rostr). The findings should have practical implications in the tree breeding programmes.…”

Section: Discussionmentioning

confidence: 99%

The impact of cronartium flaccidum on the growth of pinus sylvestris

Martinsson

Nilsson

1987

Scandinavian Journal of Forest Research

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The blister rust of two-needle pines in Europe is caused by the rust fungus, Cronartium flaccidum (Alb. Schw.) Wint. There are two races of the fungus: One host-alternating and another pine-to-pine race. The latter race is considered to be more common in northern Sweden. The impact of this rust on growth of Scots pine (Pinus sylvestris L.) was investigated in three selected stands in northern Sweden. Radial stem increment was reduced 40-70% by severe attacks and 20-40% by minor attacks. The reduction of stem volume growth was probably greater. The faster growing trees seemd to be more severely attacked. Trees growing on poor soils appeared to lose almost as much growth capacity from a minor attack as from a severe attack.

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“…is one ofthe most severe fungal diseases in pine stands in Scandinavia (KARDELL 1966;KURKELA 1973;MARTiNSSON 1985). Fortunately, most plants show varying degree of resistance to the fungus.…”

Section: Introductionmentioning

confidence: 98%