Fomes annosus (Fr.) Cke. and other Root-rotting Fungi in Conifers on ex-Hardwood Sites

Greig, B. J. W.

doi:10.1093/forestry/35.2.164

Cited by 32 publications

(15 citation statements)

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“…At stem base of Norway spruce Heterobasidion species often co-occur with white-rot fungi in the genus Armillaria. When the two coexist, Armillaria species usually occupy outer heartwood, while Heterobasidion is associated with the inner heartwood [18]. Root infection by Armillaria species is often associated with predisposing abiotic conditions such as poorly drained soils [19].…”

Section: Introductionmentioning

confidence: 99%

Carbon Dioxide and Methane Formation in Norway Spruce Stems Infected by White-Rot Fungi

Hietala

Dörsch

Kvaalen

et al. 2015

Forests

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Globally, billions of tons of carbon sequestered in trees are annually recycled back to the atmosphere through wood decomposition by microbes. In Norway, every fifth Norway spruce shows at final harvest infection by pathogenic white-rot fungi in the genera Heterobasidion and Armillaria. As these fungi can mineralize all components of wood, we predicted that they have a significant carbon footprint. Gas samples taken from infected stems were analyzed for CO2 and CH4 concentrations, and wood samples from different parts of the decay columns were incubated under hypoxic (4% O2) and anoxic laboratory conditions. In spring and summer the stem concentrations of CO2 were generally two times higher in trees with heartwood decay than in healthy trees. For most of the healthy trees and trees with heartwood decay, mean stem concentrations of CH4 were comparable to ambient air, and only some Armillaria infected trees showed moderately elevated CH4. Consistently, low CH4 production potentials were recorded in the laboratory experiment. Up-scaling of CO2 efflux due to wood decay in living trees suggests that the balance between carbon sequestration and emission may be substantially influenced in stands with high frequency of advanced root and stem heartwood decay.

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Section: Introductionmentioning

confidence: 99%

Carbon Dioxide and Methane Formation in Norway Spruce Stems Infected by White-Rot Fungi

Hietala

Dörsch

Kvaalen

et al. 2015

Forests

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“…It can be readily accepted that basidiospores could be responsible for those P. schweinitzii infections which result in the areas of decay found occasionally in the aerial parts of trees followingfireorotherformsof physical damage (BOYCE 1948;HARVEY 1962;GREIG 1962). However, little is known about the fate of basidiospores of P. schweinitzii once they have entered the potentially hostile environment of a forest soil. Evidence that basidiospores can germinate and produce chlamydospores in soil has been published by DEWEY et al (1984V This work examined soil from the present seeding experiment but presented no information on the persistence of the induced infestations, or whether or not the fungus could spread freely through the soil while existing as a competitive saprophyte.…”

Section: Introductionmentioning

confidence: 99%

Reviews: Pests and Diseases of Forest Plantation Trees

Browne¹

1969

The Forestry Chronicle

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Tbe occurrence of Pbaeolus scbiveinitzii in tbe soils ofSitka spruce plantations 417 Das Auftreten und die Haufigkeit des Pilzes in den Boden legt (7Aisammcn mit den Ergebnissen von BARRETT 1985) nahe. dal,! die Basidiosporen fiir die ortliclic und niogliclierweise aueh Ferninfektion der Boden venintwortlicli sind. Die vorliegende Untersueluing, die cine grofie Zahl von Bestanden belegt, in denen der Pilz vorhanden ist, olme dafi die Krankheit auftritt, stiit/.t die Ansicht, da(5 disponiercnde Faktoren vorhanden sein mussen, damit es zu Wurzelinfektionen kommen kann. References BARRETT, D, K,, 1970: Armillaria mellea as a possible factor predisposing roots to infection by Polyporus sebweinitzii. Trans, Br, mycol, Soc, 55, 459^62, -1978: An improved selective medium for i,solat{on of Pbaeolus scbtveinitzii. Trans, Br, mycol, Soe, 71,507-508, -1985: Basidiospore,s of Pbaeolus scbweinitzii; a source oi soil infestation, Eur, J, For, Path, 15, : Investigations into the infection biology of Pbaeolus scbweinitzii. AbstractPersistent soil Infestations with Pbaeolus sebweinitzii were successfully established in the forest environment using basidiospores, but there was no evidence that the fungus spread freely through the ,soil while existing .is a competitive saprophyte. Diseased stumps and roots of Sitka spruce remained a source of sporophore production for more than 17 years, but the principal flush of sporulation occurred within the finst 7 years .ifter felling, U. S, AbstractDouglas-fir [Pseudotsuga menz/esn (Mirb.) Franco] stumps infested with Phellinus weirii (Murr.) Gilb. were inoculated with the antagonist Trichoderma viride Pers.: Fr. Colonization of the stumps by Trichoderma spp. after one year was significantly higher in the upper 10-cm than in the middle or lower 1 0-cm section even though inoculum was present at all levels. A pellet inoculum made from fermented barley grains and .spores proved to be superior hioculum to colonized dowels, but no difference was found among the three isolates of T. viride tested. Decayed wood wa.s more readily colonized than stained wood and was much more readily colonized than sound wood. U. S.

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“…Herink usually occupies outer tissue at lower parts of the stumps, while Heterobasidion occupies the inner tissue. Possibly Armillaria ostoyae thereby diminishes the spread of Heterobasidion to adjacent healthy trees via root contacts (Greig 1962). In this study, only Heterobasidion was identified on the stump discs but while Heterobasidion was dominating, approximately 23% of the decay remained unidentified.…”

Section: Discussionmentioning

confidence: 52%

“…However, since the previous land-use was not only broad-leaved tree dominated forest, and to a great extent heath land, the probability of presence of Armillaria spp. and its importance in the disease transmission should be low (Greig 1962, Rehfuess 1973. The frequent occurrence of Heterobasidion at the time of sampling in the present rotation would also add confusion if Armillaria spp.…”

Section: Discussionmentioning

confidence: 99%

Incidence of butt rot at final felling and at first thinning of the subsequent rotation of Norway spruce stands in south-western Sweden

Rönnberg¹,

Berglund²,

Johansson³

2007

Silva Fenn.

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The incidence of butt rot in Norway spruce stands at final felling and at first thinning of the subsequent rotation was investigated at 20 sites in south-western Sweden. There was a negative correlation between the incidence at first thinning and the basal area of decayed trees at final felling. Using incidence of decay or basal area of decayed trees to predict disease transfer between rotations is difficult and requires the inclusion of several factors, making predictions uncertain. The level of infection found at final felling in this study varied between 7 and 71.8%, indicating that the risk of spore infection transfer to the next rotation was probably quite low. Long-term experiments are required to reveal the effect of stump treatment on disease transmission between rotations.

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Fomes annosus (Fr.) Cke. and other Root-rotting Fungi in Conifers on ex-Hardwood Sites

Cited by 32 publications

References 0 publications

Carbon Dioxide and Methane Formation in Norway Spruce Stems Infected by White-Rot Fungi

Carbon Dioxide and Methane Formation in Norway Spruce Stems Infected by White-Rot Fungi

Reviews: Pests and Diseases of Forest Plantation Trees

Incidence of butt rot at final felling and at first thinning of the subsequent rotation of Norway spruce stands in south-western Sweden

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