Summary
Repeated annual assessments of the toadstools (fruitbodies) of mycorrhizal fungi associated with a mixed stand ofBetula spp. indicated that they were produced in a pattern ordered in time and space, suggesting a succession with identifiable early-and late-stage fungi. This concept is supported by below-ground observations of mycorrhizas which, however, need to be augmented.
Both early- and late-stage mycorrhizal fungi form mycorrhizas on seedlings growing in axenic (‘aseptic’) conditions. In contrast, only early-stage fungi seem able to trigger mycorrhizal formation on seedlings growing in unsterile soils.
During axenic propagation, the early-stageHebeloma sacchariolens and the late-stageAmanita muscaria formed similar numbers of mycorrhizas per root system. After being transplanted to a range of unsterile field soils,A. muscaria failed to keep pace with the spread of the developing root system: no moreA. muscaria mycorrhizas were formed. On the other hand the continued development ofH. sacchariolens mycorrhizas precluded, during the first season after transplanting, the development of mycorrhizas by fungi naturally occurring in field soils. In the second season, however, the development ofH. sacchariolens mycorrhizas was restricted in acid peat but not in three other types of soil.
The development ofLaccaria mycorrhizas after inoculating Sitka spruce with this fungus was associated, irrespective of soil type, with accelerated tree growth; with heights at the end of the first season being doubled.
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References
Bledsoe C S, Tennyson K and Lopushinsky W 1982 Survival and growth of outplanted Douglas-fir seedlings inoculated with mycorrhizal fungi. Can. J. For. Res. 12, 720–723.
Chu-Chou M 1979 Mycorrhizal fungi ofPinus radiata in New Zealand. Soil Biol. Biochem. 11, 557–562.
Chu-Chou M and Grace L J 1981 Mycorrhizal fungi ofPseudotsuga menziesii in the North Island of New Zealand. Soil Biol. Biochem. 13, 247–249.
Deacon, J W, Donaldson S J and Last F T 1983 Sequences and interactions of mycorrhizal fungi on birch. Plant and Soil 71, 257–262.
Fleming L V 1983 Succession of mycorrhizal fungi on birch: infection of seedlings planted around mature trees. Plant and Soil 71, 263–267.
Ford E D, Mason P A and Pelham J 1980 Spatial patterns of sporophore distribution around a young birch tree in three successive years. Trans. Br. mycol. Soc. 75, 287–296.
Fox F M 1983 Role of basidiospores as inocula of mycorrhizal fungi of birth. Plant and Soil 71, 269–273.
Laiho O 1970Paxillus involutus as a mycorrhizal symbiont of forest trees. Acta For. Fenn. 106, 1–72.
Lamb R J 1979 Factors responsible for the distribution of mycorrhizal fungi ofPinus in Eastern Australia. Aust. For. Res. 9, 25–34.
Last F T, Mason P A, Smith R, Pelham J, Bhoja Shetty K A and Mahmoud Hussain A M 1981 Factors affecting the production of fruitbodies ofAmanita muscaria in plantations ofPinus patula. Proceedings of the Indian Academy of Science (Plant Science) 90, 91–98.
Last F T, Mason P A, Wilson J, Deacon J W and Walker C 1983 Succession: its relevance when selecting sheathing mycorrhizal fungi for inoculating young trees. Nature Londonin litt.
Last F T, Mason P A, Wilson J and Deacon J W 1983 Fine roots and sheathing mycorrhizas: their formation, function and dynamics. Plant and Soil 71, 9–21.
Marks G C and Foster R C 1967 Succession of mycorrhizal associations on individual roots of Radiata pine. Aust. For. 31, 193–201.
Mason P A 1980 Aseptic synthesis of sheathing (ecto-) mycorrhizas.In Tissue Culture Methods for Plant Pathologists. Eds. D S Ingram and J P Helgeson. pp 173–178 Blackwell Scientific, Oxford.
Mason P A, Last F T, Pelham J and Ingleby K 1982 Ecology of some fungi associated with an ageing stand of birches (Betula pendula andB. pubescens). For. Ecol. Manage. 4, 19–39.
Mason P A, Dighton J, Last F T and Wilson J 1983 Procedure for estabilishing sheathing mycorrhizas on tree seedlings. Forest Ecol. Manage. 5, 47–53.
Mikola P 1980 Mycorrhizae across the frontiers.In Tropical Mycorrhiza Research. Ed. P Mikola. pp 3–10. Clarendon Press, Oxford.
Molina R 1982 Use of the ectomycorrhizal fungusLaccaria laccata in forestry. 1. Consistency between isolates in effective colonisation of containerized conifer seedlings. Can. J. For. Res. 12, 469–473.
Riffle J W and Tinus R W 1982 Ectomycorrhizal characteristics, growth and survival on artificially inoculated ponderosa and Scots pine in a greenhouse and plantation. For. Sci. 28, 646–660.
Tominaga Y 1975 Studies on the mycorrhiza of ‘fairy ring’ ofTricholoma matsutake (S. Ito et Imai) Sing. VI. On the mycorrhiza ofPinus densiflora. Bull. Hiroshima Agric. Coll. 5, 159–163.
Trappe J M 1962 Fungus associates of ectotrophic mycorrhizae. Bot. Rev. 28, 538–606.
Trappe J M 1977 Selection of fungi for ectomycorrhizal inoculation in nurseries. Annu. Rev. Phytopathol. 15, 203–222.
Trappe J M and Strand R F 1969 Mycorrhizal deficiency in a Douglas-fir region nursery. For. Sci. 15, 381–389.
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Mason, P.A., Wilson, J., Last, F.T. et al. The concept of succession in relation to the spread of sheathing mycorrhizal fungi on inoculated tree seedlings growing in unsterile soils. Plant Soil 71, 247–256 (1983). https://doi.org/10.1007/BF02182659
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DOI: https://doi.org/10.1007/BF02182659