Microbial community from species rich meadow supports plant specialists during meadow restoration

Soil properties and soil microbial communities can greatly affect plant communities, especially in disturbed ecosystems. However, their relative contribution to the final effect on plants has rarely been assessed.
We manipulated the soil microbial community in microcosms by inoculating sterilized soils originating from preserved species-rich meadow and a restored meadow with a high and low diversity of microbial inoculum (manipulated by dilution of microbial community extract) from those soils in full factorial manner, yielding eight treatments (2 soil origins × 2 inoculum sources × 2 levels of inoculum diversity).
In general, the biomass of plant meadow specialists (Filipendula vulgaris, Phleum phleoides, and Prunella grandiflora) was greater with the preserved meadow inoculum than with the restored meadow inoculum but tended to be greater in the restored meadow soil than in the preserved meadow soil. Two meadow generalists (Festuca rubra, and Centaurea jacea) were not significantly af...

土壤理化性质与土壤微生物群落可显著影响植物群落，在受干扰生态系统中这一效应尤为突出。然而，二者对植物最终影响的相对贡献却鲜有研究评估。
本研究采用全因子实验设计，对取自原生物种丰富草甸与修复草甸的灭菌土壤，分别接种源自这两种草甸、经微生物群落提取物（microbial community extract）稀释调控得到的高、低多样性微生物接种物（microbial inoculum），以此操控微宇宙培养体系（microcosms）中的土壤微生物群落，最终得到8组处理（2种土壤起源 × 2种接种物来源 × 2种接种物多样性水平）。
总体而言，草甸专性植物（旋果蚊子草（Filipendula vulgaris）、假梯牧草（Phleum phleoides）与大花夏枯草（Prunella grandiflora））的生物量在接种原生草甸微生物接种物时显著高于接种修复草甸微生物接种物，但在修复草甸灭菌土壤中，其生物量整体高于原生草甸灭菌土壤。两种草甸广适性植物（紫羊茅（Festuca rubra）与山矢车菊（Centaurea jacea））的生物量未受到显著影响……