肖光輝
湖南省園藝研究所 長沙 410125

【中文摘要】 本文采用三種不同的培養基配方對香菇Cr-02菌株大分子碳源的代謝進行了探討,結果認為淀粉是最先被香菇菌絲分解利用的多糖。在纖維素、半纖維素和木質素三類大分子聚合物中,香菇發菌初期優先利用半纖維素,其次是木質素,纖維素利用較少。由于纖維素的降解受小分子碳源的誘導,同時又受小分子碳源的抑制,還受氮素營養的影響,木質素的降解也受培養基中碳、氮營養的影響,香菇在整個發菌過程中降解木質素、纖維素和半纖維素三類大分子聚合物的規律,于不同配方培養基中有差異。

【英文摘要】 Macromolecule C-sourcce metabolism of shiitake mushroom (Lentinus edodes) strain Cr-02 grown in three different formula of media was studied. The results indicate that starch is a polysaccharide which is earliest degraded and used by shiitake mycelia. Among three macro-molecule polymers, cellulose, hcmicellulose and lignin, hemicellulose is degraded preferentially by shiitake mycelia at early days of spawn-running. Secondly lignin, cellulose is degraded poorly in the early days of spawn-running. As the degradation of cellulose is induced and restrained by micro-molecule C-source, as well as influenced by the N-nutrition, while the degradation of lignin is influenced both by the C-and N-nutrition in the media. The degradation patterns of cellulose, hemi-cellulose and lignin during all spawn-running period of the shiitake mushroom are different due to the influence of C and N-nutrition of different media formula.

【中文關鍵詞】 香菇; 大分子碳源; 代謝
【英文關鍵詞】 Shiitake; Macro-molecule; C-source; Metabolism

【文獻出處】 食用菌學報,Acta Edulis Fungi,編輯部郵箱,1994年01期 【DOI】CNKI:SUN:SYJB.0.1994-01-007