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  • 1
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    Comparative structural study ofQuercus serrata andQ. acutissima formed byPisolithus tinctorius andHebeloma cylindrosporum (1995)
    Springer
    Details
    Publication Date: 1995-02-01
    Print ISSN: 0931-1890
    Electronic ISSN: 1432-2285
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Published by Springer
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  • 2
    Electronic Resource
    Electronic Resource
    Anatomical aspects of field ectomycorrhizas on Polygonum viviparum (Polygonaceae) and Kobresia bellardii (Cyperaceae) (1998)
    Springer
    Mycorrhiza 7 (1998), S. 287-292 
    Details
    ISSN: 1432-1890
    Keywords: Key words Kobresia ; Polygonum ; Ectomycorrhiza ; Alpine ; Anatomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  Root systems of the herbaceous species Polygonum viviparum and Kobresia bellardii were excavated from an alpine site in the Rocky Mountains, Colorado, and processed for microscopic examination. Several ectomycorrhizal morphotypes were present on root systems of both species;K. bellardii often had complex clusters of mycorrhizal roots present. A mantle and Hartig net were present on all mycorrhizal root tips processed. The Hartig net was confined to the epidermis, and the parenchyma cells of this layer were radially elongated, vacuolated and contained densely staining inclusions. Intracellular hyphae and structures typical for vesicular-arbuscular mycorrhizas were never observed. Both herbaceous species, therefore, had ectomycorrhizal associations comparable to those described for woody angiosperm species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s005720050194
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  • 3
    Electronic Resource
    Electronic Resource
    Structural aspects of Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] tuberculate ectomycorrhizae (1992)
    Springer
    Trees 6 (1992), S. 137-146 
    Details
    ISSN: 1432-2285
    Keywords: Pseudotsuga ; Tubercles ; Ectomycorrhiza ; Calcium oxalate ; Bacteria
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Tubercles of Pseudotsuga menziesii consisted of clusters of ectomycorrhizae surrounded by a peridiumlike rind. Energy dispersive spectroscopy demonstrated that crystals found in the zone of loose hyphae extending from the inner rind to the mantle of each root probably contain calcium oxalate. Inner mantle and Hartig net hyphae showed a labyrinthine branching pattern and stored carbohydrates and protein. The Hartig net formed up to inner cortical cells which had thickened, darkly stained walls. Bacteria were located either along with hyphae within the rind or as colonies on the surface of the tubercle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00202429
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  • 4
    Electronic Resource
    Electronic Resource
    Comparative structural study ofQuercus serrata andQ. acutissima formed byPisolithus tinctorius andHebeloma cylindrosporum (1995)
    Springer
    Trees 9 (1995), S. 171-179 
    Details
    ISSN: 1432-2285
    Keywords: Quercus serrata ; Quercus acutissima ; Hebeloma cylindrosporum ; Pisolithus tinctorius ; Ectomycorrhizas
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Ectomycorrhizas were synthesized in pots and growth pouches betweenQuercus serrata, Q. acutissima, and two ectomycorrhizal fungi,Pisolithus tinctorius andHebeloma cylindrosporum. Root morphology and the structure of the mantle and Hartig net were compared using light, fluorescence, scanning and transmission electron microscopy.P. tinctorius initially colonized root cap cells, and eventually produced a highly branched lateral root system with a complete mantle, whereasH. cylindrosporum promoted root elongation with few hyphae on the root apex surface indicating that interaction between roots differs with fungal species. Hartig net structure and hyphal inclusions varied between all the combinations tested. There were structural differences between mycorrhizas ofH. cylindrosporum/Q. acutissima grown in soil and growth pouches, which indicate that the growth pouch environment can induce artefacts in roots. Fruit bodies ofH. cylindrosporum developed in pots withQ. acutissima. AlthoughP. tinctorius has been used to inoculate oak seedlings in the nursery, results of this study indicate thatH. cylindrosporum may also be an effective ectomycorrhizal fungus forQ. serrata andQ. acutissima.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02418207
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  • 5
    Electronic Resource
    Electronic Resource
    Comparative studies of ectomycorrhiza formation in Alnus glutinosa and Pinus resinosa with Paxillus involutus (1999)
    Springer
    Mycorrhiza 8 (1999), S. 229-240 
    Details
    ISSN: 1432-1890
    Keywords: Key words Black alder ; Red pine ; Structure ; Hartig net ; Compatibility ; Mycorrhiza
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  Mycorrhiza ontogeny and details of Hartig net and mantle structure were compared in ectomycorrhizas synthesized in growth pouches between the broad host range fungus Paxillus involutus and the tree species European black alder (Alnus glutinosa) and red pine (Pinus resinosa). In Alnus glutinosa, a paraepidermal Hartig net was restricted to the proximal (basal) portion of first-order laterals; the hypodermal layer appeared to be a barrier to fungal penetration. Phi-thickenings were present in some cortical cells but these were not related to lack of fungal ingress into the cortex. The mantle was often present close to the root apex but in many roots it was loosely organized and patchy. In several instances, the mantle formed around the root apex was only temporary; renewed root growth occurred without the formation of a mantle. In Pinus resinosa, the Hartig net developed between cortical cell layers of monopodial and dichotomously branched first–order laterals. Fungal hyphae in the Hartig net exhibited a complex labyrinthine mode of growth. The mantle had a pseudoparenchymatous structure and covered the root, including apices of dichotomously branched roots. The Paxillus–Pinus resinosa interaction had all the characteristics of a compatible ectomycorrhizal association. The Paxillus–Alnus glutinosa interaction, however, showed only aspects of superficial ectomycorrhizas, including the presence of a minimal (sometimes absent) and mostly proximal Hartig net and variable mantle development. Sclerotia were produced in the extraradical mycelium of Paxillus involutus when associated with either Alnus glutinosa or Pinus resinosa.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s005720050239
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  • 6
    Electronic Resource
    Electronic Resource
    Structure and histochemistry of mycorrhizae synthesized between Arbutus menziesii (Ericaceae) and two basidiomycetes, Pisolithus tinctorius (Pisolithaceae) and Piloderma bicolor (Corticiaceae) (1993)
    Springer
    Mycorrhiza 3 (1993), S. 1-11 
    Details
    ISSN: 1432-1890
    Keywords: Arbutoid mycorrhizae ; Arbutus ; Piloderma ; Pisolithus ; Exodermis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Arbutoid mycorrhizae were synthesized in growth pouches between Arbutus menziesii Pursch. (Pacific madrone) and two broad host range basidiomycete fungi, Pisolithus tinctorius (Pers.) Coker and Couch and Piloderma bicolor (Peck) Jülich. P. tinctorius induced the formation of dense, pinnate mycorrhizal root clusters enveloped by a thick fungal mantle. P. bicolor mycorrhizae were usually unbranched, and had a thin or non-existent mantle. Both associations had the well-developed para-epidermal Hartig nets and intracellular penetration of host epidermal cells by hyphae typical of arbutoid interactions. A. menziesii roots developed a suberized exodermis which acted as a barrier to cortical cell penetration by the fungi. Ultrastructurally, the suberin appeared non-lamellar, but this may have been due to the imbedding resin. Histochemical analyses indicated that phenolic substances present in epidermal cells may be an important factor in mycorrhiza establishment. Analyses with X-ray energy dispersive spectroscopy showed that some of the granular inclusions present in fungal hyphae of the mantle and Hartig net were polyphosphate. Other inclusions were either protein or polysaccharides.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00213461
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