Ectomycorrhizal Fungi Key Genera in Profile by S. M. Chambers, J. W. G. Cairney (auth.), Dr. John W. G.

By S. M. Chambers, J. W. G. Cairney (auth.), Dr. John W. G. Cairney, Dr. Susan M. Chambers (eds.)

Mycorrhiza - the symbiosis among vegetation and fungi - performs a key position in flora. This publication experiences for the 1st time the present wisdom of 15 person genera of ectomycorrhizal fungi. it really is certain in that every bankruptcy is devoted to a unmarried fungal genus, each one written through across the world famous specialists at the respective fungal genera. it's hence a useful reference resource for researchers, scholars and practitioners within the fields of mycorrhizal biology, mycology, forestry, plant sciences and soil biology.

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Cairney Sohn RF (1981) Pisolithus tinctorius forms long ectomycorrhizae and alters root development in seedlings of Pinus resinosa. Can J Bot 59:2129-2133 Stephanie A-L, Chalot M, Botton B, Dexheimer J (1996) Morphological and physiological evidences for the involvement of the root-cap in ectomycorrhiza formation between Eucalyptus globulus and Pisolithus tinctorius. In: Szaro TM, Bruns TD (eds) Abstracts of the 1st Int Conf on Mycorrhizae, August 1996, University of California, Berkeley, p 22 Suh H-W, Crawford DL, Korus RA, Shetty K (1991) Production of antifungal metabolites by the ectomycorrhizal fungus Pisolithus tinctorius strain SMF.

Similarly, while Abuzinadah et al. (l986) concluded that Pisolithus had little ability to enhance acquisition of N from protein by Pinus contorta, Turnbull et al. M. G. Cairney Eucalyptus spp. in symbiosis with Pisolithus. Such disparate results may indicate an influence of different host plants, perhaps, as suggested by Turnbull et al. (1995), mediated by a differential availability of C compounds from each host. Equally, since in each case only single isolates of Pisolithus were utilised, it may simply indicate that considerable intraspecific variation exists within Pisolithus with regard to the potential for facilitating organic N utilisation.

Production of these secondary metabolic products has not yet been confirmed during symbiosis with the host. However, given the physiological heterogeneity that exists within individual ECM mycelia, and the potential for idiophase (secondary metabolism) onset in different spatio-temporal regions therein (see Cairney and Burke 1994,1996), it is certainly conceivable that such products can be expressed in symbiotic Pisolithus mycelia in soil. It is further possible that the extracellular antimicrobial effect of Pisolithus may be enhanced by non-specific acidification of the rhizosphere in some instances (Rasanayagam and Jeffries 1992).

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