Degradation of 14C-labelled lignin and dehydropolymer of coniferyl alcohol by ericoid and ectomycorrhizal fungi
Degradation of 14C-labelled lignin and dehydropolymer of coniferyl alcohol by ericoid and ectomycorrhizal fungi
复制标题
杜鹃花和外生菌根真菌对 14C 标记木质素和松柏醇脱水聚合物的降解
作者：
K. Haselwandter;O. Bobleter;D. Read
在纯培养研究中评估了杜鹃花科和外生菌根真菌利用14 C-标记的木质素和O 14 CH 3-标记的松柏醇脱氢聚合物作为唯一碳源的能力。结果表明，杜鹃花类菌根真菌比外生菌根真菌更能有效地降解木质素。其中的外生菌根真菌的兼性菌根真菌Paxillusinvolutus降解木质素更容易比那些通常被认为是专性的菌根真菌，如牛乳牛肝菌和玫瑰状牛肝菌。这些木质素降解能力的重要性进行了讨论，在有关的优势，特定的菌根形式沿着梯度增加有机质，因此木质素含量的土壤。
The ability of ericoid and ectomycorrhizal fungi to utilize 14C-labelled lignin and O14CH3-labelled dehydropolymer of coniferyl alcohol as sole C sources has been assessed in pure culture studies. The results indicate that ericoid mycorrhizal fungi are more effective in degrading lignin than ectomycorrhizal fungi. Amongst the ectomycorrhizal fungi the facultative mycorrhizal fungus Paxillus involutus degraded lignin more readily than those which are normally considered to be obligately mycorrhizal fungi such as Suillus bovinus and Rhizopogon roseolus. The importance of these lignin degrading capabilities is discussed in relation to the predominance of specific mycorrhiza forms along a gradient of increasing organic matter and hence lignin content of soil.