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Comparison of litter decomposing ability among diverse fungi in a cool temperate deciduous forest in Japan

机译:日本低温温带落叶林不同真菌凋落物分解能力的比较

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The litter decomposing ability of 79 fungal isolates (41 genera, 60 species) was assessed with the pure Culture decomposition test. The isolates were collected qualitatively in a cool temperate deciduous forest in Japan during a 21-mo period. Loss of original weight of sterilized litter ranged from 0.1% to 57.6%. Six isolates in the Basidiomycota caused high weight losses ranging from 15.1% to 57.6%. Fourteen isolates in Xylaria and Geniculosporium (the Xylariaceae and its anamorph) also caused high weight losses ranging from 4.0% to 14.4%. Other isolates in the Ascomycota arid associated anamorphs and in the Zygomycota caused low weight losses on mean. Six fungi in the Basidiomycota, and all in the Xylariaceae showed a bleaching activity of the litter and caused lignin and carbohydrate decomposition. Mean lignin/weight loss ratios (L/W) and lignin/carbohydrate loss ratios (L/C), were 0.9 and 0.7 for the Basidiomycota and 0.7 and 0.4 for the Xylariaceae, respectively. Significant differences were found in L/W and L C between the two groups when the result of Xylaria sp. that showed marked delignification was excluded. These differences in lignin and carbohydrate utilization patterns are discussed in relation to the structural and the chemical properties of the decomposed litter and to the implications for organic chemical changes during litter decomposition processes. [References: 35]
机译:用纯培养物分解试验评估了79种真菌分离物(41属60种)的凋落物分解能力。在21个月的时间里,定性菌株被定性地收集在日本凉爽的温带落叶林中。无菌垫料的原始重量损失为0.1%至57.6%。担子菌属中的六个分离物引起了15.1%至57.6%的高体重减轻。 Xylaria和Geniculosporium中的14个分离株(Xylariaceae及其无性型)也引起了很高的体重减轻,范围从4.0%到14.4%。子囊菌和相关变形体中的其他分离物和合子菌中的其他分离物均值造成低体重减轻。担子菌中的六个真菌以及木糖科中的所有真菌均显示了凋落物的漂白活性,并导致木质素和碳水化合物分解。木质素/体重损失比(L / W)和木质素/碳水化合物损失比(L / C),对于担子菌属分别为0.7和0.7,对于木霉科为0.7和0.4。 Xylaria sp。的结果表明,两组之间的L / W和LC存在显着差异。显示明显脱木素的物质被排除在外。讨论了木质素和碳水化合物利用方式的这些差异,涉及分解垃圾的结构和化学特性,以及垃圾分解过程中有机化学变化的含义。 [参考:35]

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