Ectomycorrhiza formation between Pseudotsuga menziesii seedling roots and monokaryotic and dikaryotic isolates of Laccaria bicolor |
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| Authors: | T. C. Lumley M. L. Farquhar R. L. Peterson |
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| Affiliation: | (1) Department of Botany, University of Guelph, N1G 2W1 Guelph, Ontario, Canada;(2) Present address: Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada |
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| Abstract: | Seedling roots of Pseudotsuga menziesii were colonized with three monokaryotic isolates and one dikaryotic isolate of Laccaria bicolor to assess the effect of fungal genotype on ectomycorrhiza formation. Ectomycorrhizas resulting from colonization by the dikaryotic isolate had a multilayered mantle and a cortical Hartig net. One monokaryotic isolate (ss7) formed ectomycorrhizas comparable in anatomy to those induced by the dikaryotic isolate. Two other monokaryotic isolates (ss5, ss1) failed to form mantles or Hartig nets. Roots colonized by these isolates developed characteristics indicating an incompatible reaction. |
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| Keywords: | Pseudotsuga Douglas fir Laccaria Monokaryons Genotypes Ectomycorrhizas Anatomy |
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