The structure and function of the vegetative mycelium of ectomycorrhizal plants IV. Qualitative analysis of carbohydrate contents of mycelium interconnecting host plants.

Söderström, Bengt; Finlay, RD; Read, David

doi:10.1111/j.1469-8137.1988.tb03704.x

Cited by 37 publications

(12 citation statements)

References 12 publications

(3 reference statements)

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“…I). In addition, we found the fungal carbohydrates arabitol, mannitol and trehalose (Söderström et al, 1988;Tibbett et al, 2002) in the decayed heartwood (Tab. I).…”

Section: Resultsmentioning

confidence: 60%

The effect of brown-rot decay on water adsorption and chemical composition of Scots pine heartwood

Karppanen¹,

Venäläinen²,

Harju³

et al. 2008

Ann. For. Sci.

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-• The effect of brown-rot (Coniophora puteana) decay on the water adsorption capacity and concentration of extractives of Scots pine (Pinus sylvestris L.) heartwood were studied by comparing corresponding properties of decayed and undecayed wood samples.• The samples derived from 39 felled trees having a large between-tree variation in the extractive concentrations, and subsequently in the mass loss in the decay test. The water adsorption capacity, expressed as equilibrium moisture content (EMC), was measured at a high relative humidity (RH ∼100%, 21• C).• In contrast to the widely held belief, the water adsorption capacity of brow-rotted heartwood appeared to be significantly higher than that of undecayed heartwood.• The chemical composition of heartwood was changed radically by the fungus: the concentration of stilbenes, resin acids and free fatty acids decreased, while the concentration of soluble sugars increased as a result of decay. In addition, fungal sugars were found in the decayed samples. The concentration of total phenolics increased, which obviously reflected chemical changes in cell wall constituents other than extractives.• As a conclusion, the information concerning the hygroscopicity of brown-rotted wood might be valuable e.g. when carrying out repairs on buildings damaged by advanced decay.brown-rot decay / extractives / Scots pine heartwood / mass loss / moisture content Résumé -Effet des pourritures brunes sur l'adsorption de l'eau et la composition chimique du bois de Coeur du pin sylvestre.• Nous avons étudié l'effet de la présence de pourriture brune (Coniophora puteana) sur la capacité d'adsorption de l'eau et sur la concentration d'extractibles du bois de coeur du pin sylvestre (Pinus sylvestris L.) en comparant des échantillons contaminés et sains obtenus pour 39 arbres échantillonnés.• Dans les essais de décomposition, on obtient une grande variation entre arbres de la concentration en extractibles et de la perte de masse. La capacité d'adsorption de l'eau, exprimée comme l'humidité d'équilibre, a été mesurée à une humidité relative de 100 % à 21• C.• Contrairement à ce qui était attendu, la décomposition augmente la capacité d'adsorption de l'eau du bois de coeur en atmosphère très humide. La différence entre arbres des variations de l'humidité d'équilibre (décomposé-contrôle) augmente significativement avec l'augmentation de la perte de masse.• La composition chimique du bois de coeur est radicalement modifiée par le champignon : la concentration de stilbènes, de résines acides et d'acides gras libres décroît tandis que la concentration de sucres solubles augmente, cela résultant de la décomposition. La concentration de composés phéno-liques totaux, mesurée par le test de décomposition de Folin-Ciocalteu, augmente. De plus des sucres fongiques dérivant des hyphes de C. puteana ont été retrouvés dans les échantillons décomposés.• En conclusion, les informations concernant l'hygroscopicité du bois brun pourraient être utiles par exemple au moment de procéder à la réparation d...

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“…I). In addition, we found the fungal carbohydrates arabitol, mannitol and trehalose (Söderström et al, 1988;Tibbett et al, 2002) in the decayed heartwood (Tab. I).…”

Section: Resultsmentioning

confidence: 60%

The effect of brown-rot decay on water adsorption and chemical composition of Scots pine heartwood

Karppanen¹,

Venäläinen²,

Harju³

et al. 2008

Ann. For. Sci.

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“…Arabitol and mannitol, on the other hand, appear to serve a largely translocatory function (Soderstrom et al, 1988). It is therefore interesting that the concentrations of arabitol and mannitol were lower in older P. sitchensis/T.…”

Section: Discussionmentioning

confidence: 97%

“…In ectomycorrhizal basidiomycetes, trehalose is regarded as the major soluble storage carbohydrate (Martin, Canet & Marchal, 1984;Soderstrom et al, 1988). Arabitol and mannitol, on the other hand, appear to serve a largely translocatory function (Soderstrom et al, 1988).…”

Section: Discussionmentioning

confidence: 99%

A study of ageing of spruce [Picea sitchensis (Bong.) Carr.] ectomycorrhizas. II. Carbohydrate allocation in ageing Picea sitchensis/Tylospora fibrillosa (Burt.) Donk ectomycorrhizas

Cairney

Alexander

1992

New Phytologist

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SUMMARYTranslocation of '*C-labelled photosynthate was studied in seedlings of Picea sitchensis (Bong.) Carr. ectomycorrbizal with Tylospora fibrillosa (Burt.) Donk grown in Perspex observation chambers. Although translocation to young and older mycorrhizas was observed, accumulation of current '*C-labelled photosynthate was reduced in older compared with young mycorrhizas in the same root system.Non-structural carbohydrate components of P. sitchensis/T. fibrillosa and undefined beech ectomycorrhizas collected from the field were quantified by gas-liquid chromatography. Relative differences in accumulated carbohydrates were identified between P. sitchensis/T. fibrillosa and beech mycorrhizas. Levels of total soluble and insoluble carbohydrate were lower in older compared with young P. sitchensis/T. fibrillosa mycorrhizas. The soluble sugars arabitol, glucose and mannitol were detected in significantly lower quantities in older mycorrhizas whilst fructose and trehalose content was similar to that of young mycorrhizas. These results are discussed in relation to the physiology of the ageing mycorrhiza.

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“…In ectomycorrhizas, photosynthates move from the autotroph to the fungal mantle, where they are rapidly converted to metabolic intermediates, of which trehalose and mannitol are dominant (Söderström et al 1988). Since ectomycorrhizal fungi are totally dependent on their host for carbon, they undoubtedly increase the sink strength of the root system.…”

Section: Resultsmentioning

confidence: 99%

Influence of mycorrhization on physiological parameters of micropropagated Castanea sativa Mill. plants

Martins¹,

Casimiro

Pais

1997

Mycorrhiza

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Mycorrhizal micropropagated Castanea sativa plants were studied in terms of growth and physiological parameters following in vitro mycorrhization with Pisolithus tinctorius. Mycorrhization enhanced growth of micropropagated chestnut plants, increased their protein content and photosynthetic rates, decreased the respiratory rates and CO 2 compensation point. RuBisCO activity was not significantly different in mycorrhizal and control plants, although there was an increase in the amount of RuBisCO in the former. Mycorrhization increased plant biomass and improved plants physiological status, thus enhancing the acclimatization process.

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The structure and function of the vegetative mycelium of ectomycorrhizal plants IV. Qualitative analysis of carbohydrate contents of mycelium interconnecting host plants.

Cited by 37 publications

References 12 publications

The effect of brown-rot decay on water adsorption and chemical composition of Scots pine heartwood

The effect of brown-rot decay on water adsorption and chemical composition of Scots pine heartwood

A study of ageing of spruce [Picea sitchensis (Bong.) Carr.] ectomycorrhizas. II. Carbohydrate allocation in ageing Picea sitchensis/Tylospora fibrillosa (Burt.) Donk ectomycorrhizas

Influence of mycorrhization on physiological parameters of micropropagated Castanea sativa Mill. plants

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