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The primary stage in shiro formation of tricholoma matsutake






Nippon Kingakukai Kaiho 21(4): 505-512

The primary stage in shiro formation of tricholoma matsutake

The primary growth stage of a shiro (fungal colony) of T. matsutake was investigated for young shiros formed in Pinus denisflora forest. Shiro formation was frequently found on small terraced areas where young pine roots were distributed densely underground. At first, the shiro was formed as a small and shallow colony in the mineral soil horizon 1 or 2 yr after the mycorrhiza formation. Fruit bodies developed sporadically in the 3rd yr when the quantity of mycelium reached a level capable of producing them. Fairy ring formation was observed in the 5th yr after the onset of shiro formation. These estimates were based on the profile of a young shiro and the analysis of age rings of roots growing around its center. After the primary stage, the annual growth width of mycelium in soil appeared to be constant, irrespective of age and the microbial flora inside the shiro was extremely scanty due to its ability to exclude soil bacteria and fungi, especially from the active mycorrhizal zone.


Accession: 006740808



Related references

Ogawa, M., 1977: Microbial ecology of 'Shiro' in Tricholoma matsutake (S. Ito & Imai) Sing. and its allied species. IV. Tricholoma matsutake in Tsuga diversifolia forests. V. Tricholoma matsutake in Tsuga sieboldii forests. (IV) The T. matsutake strain studied in subalpine forests formed the normal type of shiro [colony] in mineral soil layers, forming mycorrhizae with fine young roots of T. diversifolia, and excluding some soil fungi from the territory.(V) Mycorrhiz...

Ogawa, M.; Hamada, M., 1965: Microbial ecology of Shiro in Tricholoma matsuiake (S. Ito et Imai) Sing, and its allied species. I. Shiro in Tricholoma matsutake with special reference to mycorrhizal development. A description of the annual development of the mycorrhizal zone associated with the mycelium of T. matsutake and pine roots.

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Tsuruta, T.; Kawai, M., 1979: Studies on the artificial reproduction of tricholoma matsutake 7. antibiotic activities of volatile substances extracted from a shiro of tricholoma matsutake. Volatile organic substances were extracted with steam distillation or ethylether from an active mycorrhiza of T. matsutake. The extracts, fractionated with gas chromatography, contained various volatile substances; 6 fractions (A-F) were main comp...

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Ogawa, M., 1977: Microbial ecology of mycorrhizal fungus tricholoma matsutake in pine forest part 4 the shiro of tricholoma matsutake in the fungal community. The morphological features of the Shiro [fruiting body] of T. matsutake, its growth and the age of Shiro was reported. The mycorrhiza and its distribution with respect to the Shiro was described. Microbial florae in the Shiro soil and on the mycor...

Ogawa M., 1975: Microbial ecology of mycorrhizal fungus tricholoma matsutake in pine forest part 1 fungal colony shiro of tricholoma matsutake. Bulletin for the Forestry & Forest Products Research Institute (272): 79-121

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