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Träfflista för sökning "WFRF:(Read J) srt2:(1987-1989)"

Sökning: WFRF:(Read J) > (1987-1989)

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1.
  • Duddridge, J.A., et al. (författare)
  • The structure and function of the vegetative mycelium of ectomycorrhizal plants .3. Ultrastructural and autoradiographic analysis of inter-plant carbon distribution through intact mycelial systems
  • 1988
  • Ingår i: New Phytologist. - 1469-8137. ; 108:2, s. 183-188
  • Tidskriftsartikel (refereegranskat)abstract
    • Plants of Pinus sylvestris L. were grown in mycorrhizal association with Suillus bovinus (Fr.) O. Kuntze in observation chambers until an interconnecting mycelial network had developed between the seedlings. The shoot of an individual seedling was then sealed in a perspex cuvette and exposed to 14CO2. After incubation for 48 h, the 'donor' shoot was removed and components of the mycelial network and mycorrhizal roots of connected and unconnected 'receiver' seedlings were harvested, fixed, embedded and sectioned prior to being autoradiographed and examined by transmission electron microscopy. The patterns of distribution of 14C-labelled material within the mycelial strands, the sheath and root tissues was examined. The results are discussed in relation to carbon metabolism of the fungus and of the interconnected host plant.
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2.
  • Söderström, Bengt, et al. (författare)
  • Respiratory activity of intact and excised ectomycorrhizal mycelial systems growing in unsterilized soil
  • 1987
  • Ingår i: Soil Biology & Biochemistry. - : Elsevier BV. - 0038-0717. ; 19:3, s. 231-236
  • Tidskriftsartikel (refereegranskat)abstract
    • Ectomycorrhizal mycelial systems were grown in unsterile soil using specially designed growth chambers, and the respiratory activity of the mycelium was measured before and after its excision from the host roots. Approximately 30% of the total respiration in the intact system was attributable to the mycorrhizal mycelium in the soil. Severance of mycelial connections at the roots lead to a greater than 50% decrease in respiration rate within 24 h. This decline was much more rapid than that of root respiration rate which occurred when the shoot was excised from the intact system. The implications of these findings for the carbon balance and microbial ecology of forest systems are discussed.
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3.
  • Söderström, Bengt, et al. (författare)
  • The structure and function of the vegetative mycelium of ectomycorrhizal plants .4. Qualitative-analysis of carbohydrate contents of mycelium interconnecting host plants
  • 1988
  • Ingår i: New Phytologist. - 1469-8137. ; 109:2, s. 163-166
  • Tidskriftsartikel (refereegranskat)abstract
    • Plants of Pinus spp. were grown in observation chambers with the mycorrhizal fungi Suillus bovinus, Pisolithus tinctorius or Paxillus involutus. After interconnecting mycelial systems had developed between plants, individual hosts in some chambers of each species were fed with 14CO2. Mycelia from radioactively labelled and unlabelled chambers were harvested and their carbohydrates were extracted, separated chromatographically and identified. The major carbohydrates in all of the fungi were trehalose, mannitol and arabitol, their relative proportions differing in the different fungi. The results are discussed in relation both to carbon nutrition of the fungus and to carbon transfer between interconnected plants.
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  • Resultat 1-3 av 3
Typ av publikation
tidskriftsartikel (3)
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refereegranskat (3)
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Söderström, Bengt (3)
Read, D.J. (3)
Finlay, R.D. (2)
Duddridge, J.A. (1)
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Lunds universitet (3)
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Engelska (3)
Forskningsämne (UKÄ/SCB)
Naturvetenskap (3)

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