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Nuclear distribution in hyphal cells of isolates from fruit bodies and single basidiospores in ectomycorrhizal fungus tricholoma robustum and allied species visualization of nuclei and septa by a double staining method



Nuclear distribution in hyphal cells of isolates from fruit bodies and single basidiospores in ectomycorrhizal fungus tricholoma robustum and allied species visualization of nuclei and septa by a double staining method



Memoirs of the Faculty of Science Kyoto University Series of Biology 14(1-2): 117-127



Morphological features of hyphae were ocmpared among Tricholoma robustum and its allied species: T. mastsutake, T. ponderosum, T. caligatum, T. bakamatsutake, T. fulvocastaneum, and T. zelleri. The nuclear distribution in hyphal cells of isolates from fruit-body tissues and single basidiospores of these species was examined by double staining of nuclei and septa. None of these species showed clamp connection in the hyphae of isolates from fruit-body tissues, but their nuclei in hyphal cells were visualized by double staining. All of them were dikaryons. However, the hyphae of isolates from single basidiospores were monokaryons. These results suggest that the mating system for all of the species examined is heterothallic.

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