Ultrastructure et représentation spatiale du manteau fongique des ectomycorhizes

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Abstract
A study of mycorrhizas of Douglas fir (Pseudotsuga menziesii Mirb.) by light and electron microscopy has allowed us to show the organization of the mantle. A three-dimensional structure of the fungal mantle is proposed. The outer plectenchyma is characterized by free hyphae; these hyphae are devoid of cytoplasmic contents. The inner plectenchyma shows closely interwoven hyphae; the fungal cells have a living aspect and a glycogen-rich cytoplasm.