Abstract.
Ectomycorrhizae are a common symbiosis between the roots of woody plants and fungi common to the soil. That ectomycorrhizae can assist the plant partner in absorbing mineral nutrients has long been established. However, the impact of mycorrhizae on pathways available for soil nutrients to enter the root system is not clear. In particular, the impact of the fungal mantle, which surrounds the root tips, is most critical. In the present study, we assessed the permeability of the Pinus banksiana/Hebeloma cylindrosporum fungal mantle to both berberine and radioactive sulfate ions. It was found that the fungal mantle was completely impermeable to tracer dye. To test the permeability to sulfate ions, a novel technique called the internal perfusion technique was employed. By this method, permeability can be assessed. The fungal mantle proved to be impermeable to sulfate over a 24-hour exposure period. Based on recent findings pertaining to root anatomy, this result suggests that the plant may be highly dependent on the fungus to supply mineral nutrients as there is little plant tissue capable of nutrient absorption outside the fungal mantle.
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A.E. Ashford C.A. Peterson J.L. Carpenter J.W.G. Cairney W.G. Allaway (1988) ArticleTitleStructure and permeability of the fungal sheath in Pisonia mycorrhiza Protoplasma 147 149–161 Occurrence Handle10.1007/BF01403343
P. Behrmann W. Heyser (1992) ArticleTitleApoplastic transport through the fungal sheath of Pinus sylvestris/Suillus bovinus ectomycorrhizae Bot. Acta 105 427–434
G.A. Chilvers (1968) ArticleTitleSome distinctive types of eucalypt mycorrhiza Aust. J. Bot. 26 49–70
D.E. Enstone C.A. Peterson (1992) ArticleTitleThe apoplastic permeability of root apices Can. J. Bot. 70 1502–1512
R.D. Finlay H. Ek G. Odham B. Söderström (1989) ArticleTitleUptaketranslocation and assimilation of nitrogen from 15N-labeled ammonium by Pinus sylvestris plants infected with four different ectomycorrhizal fungi New Phytol. 110 58–66
J.A. Fortin Y. Piché M. Lalonde (1980) ArticleTitleTechnique for the observation of early morphological changes during ectomycorrhiza formation Can. J. Bot. 58 361–365
A.J. Kuhn W.H. Schröder J. Bauch (2000) ArticleTitleAccess of calcium and magnesium into mycorrhized spruce roots Planta 210 488–496 Occurrence Handle10750907
G.C. Marks T.T. Kozlowski (1973) Ectomycorrhizae Academic Press New York 2
D.H. Marx (1969) ArticleTitleThe influence of ectotrophic mycorrhizal fungi on the resistance of pine roots to pathogenic infections. I. Antagonism of mycorrhizal fungi to root pathogenic fungi and bacteria Phytopathol 59 153–163
B.E. McKenzie C.A. Peterson (1995a) ArticleTitleRoot browning in Pinus banksiana Lamb. and Eucalyptus pilularis Sm 1. Anatomy and permeability of the white and tannin zones Bot. Acta 108 127–137
B.E. McKenzie C.A. Peterson (1995b) ArticleTitleRoot browning in Pinus banksiana Lamb. and Eucalyptus pilularis Sm 2. Anatomy and permeability of the cork zone Bot. Acta 108 138–143
E. Melin H. Nilsson (1950) ArticleTitleTransfer of radioactive phosphorus to pine seedlings by means of mycorrhizal hyphae Physiol. Plant. 3 88–92
H.L. Mitchell R.F. Finn R.O. Rosendahl (1937) ArticleTitleThe relation between mycorrhizae and the growth and nutrient absorption of coniferous seedlings in nursery beds Black Rock For. Pap. 1 58–73
D. Tagu I. Kottke F. Martin (1998) ArticleTitleHydrophobins in ectomycorrhizal symbiosis: hypothesis Symbiosis 25 5–18
J.H. Taylor C.A. Peterson (2000) ArticleTitleMorphometric analysis of Pinus banksiana Lamb. root anatomy during a 3-month field study Trees 14 239–237 Occurrence Handle10.1007/s004680050009
P.A. Vesk A.E. Ashford A.-L. Markovina W.G. Allaway (2000) ArticleTitleApoplasmic barriers and their significance in the exodermis and sheath of Eucalyptus pilularis-Pisolithus tinctorius ectomycorrhizas New Phytol. 145 333–346 Occurrence Handle10.1046/j.1469-8137.2000.00583.x
J.G.H. Wessels (1994) ArticleTitleDevelopmental regulation of fungal cell wall formation Annu. Rev. Phytopath. 32 413–437
Wilson J.M. 1957A Study of the Factors Affecting the Uptake of Potassium by the Mycorrhiza of Beech. D. Phil. Thesis, Oxford University.
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Taylor, J.H., Peterson, C.A. Ectomycorrhizal impacts on nutrient uptake pathways in woody roots. New Forest 30, 203–214 (2005). https://doi.org/10.1007/s11056-005-0489-4
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DOI: https://doi.org/10.1007/s11056-005-0489-4