TERMOSSENSIBILlDADE DE PROPÁGULOS DE FUNGOS ECTOMICORRÍZICOS EM Pinus lucltuensis Mayr
DOI:
https://doi.org/10.24278/2178-5031.199682647Keywords:
Cenococcum geophilum, cctomycorrhiza, Pinus luchuensis, soil ecology, thermosensibilityAbstract
Three months old Pinus luchucnsis Mavr (Ryukyu pine) seedlings wcrc grown in soil from cstablishcd forest plantation, prcviously hcat trcatcd for IH in water bath at 50°, 60°, 80° and 95°C. They were containerized in glass bottles and polycarbonate pots and grown in incubator and glass house conditions respectivcly. Natural soil without hcat tratment was used as control. Five distinet ectomycorrhizal types were observed and their main characteristics were described. In soil trcated at 80°C some ectomycorhizal propagules survived and showed a specific mycorrhiza type. In control and soil trated at 50°C, four mycorrhizal types were observed but they showed distinetive sensitivity to hat tratments over 50°C and moisture content. One of the mycorhizal types was identified as Cenocoecum geophilum and the other four were unknown microbionts. The results demonstrated that in the soil trated at temperature range of 800 to 95"C, the ectomycorrhiza fungi propagules lose their viability.
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